MACH-D

High-Performance D-Sub Connectors
for Use in Harsh Environments■ Precision machined shell provides EMI shielding protection■ Grounding strip provides excellent electromagnetic compatibility (EMC)■ Mechanically rugged machined shell protects against shock, vibration, and impact■ IP67 configurations protect against fluid and dust ingress■ High-performance M24308 intermateable

THE SCIENCE OF CERTAINTY®
M020 Rev A2 23/02
an Amphenol company

TABLE OF CONTENTS
Overview
Family Overview
Plating Options
New Accessories & Features
M24308 at a Glance
Layouts
Temperature Rise Curves

2
3
4
5
6-8
9-10

MCD Standard Density
Overview & Tech Specs
Shell Dimensions

an Amphenol company

Positronic builds premium D-Sub connectors for awide variety of global industries. But every productdelivers the same outcome: Certainty. That’s ourmaster spec, our driving purpose.
We believe in the people who are advancing ourworld and making it a better place, those who are
realizing new discoveries, developing technologies
that help humans connect, and expanding commerce
to advance economies. That is why we are serious
about developing high-reliability interconnect solutions– because failure is not an option for critical systems,
they must perform.
From deep space discovery to medical breakthroughs,
Positronic delivers The Science of Certainty.

WHAT CAN YOU BE CERTAIN ABOUT?
• Failsafe product performance• Maximum design flexibility• Leading levels of energy efficiency andtemperature control• Responsive, knowledgeable support

THE SCIENCE
OF CERTAINTY ®

Contact Terminations
Create a Part
Additional Options

11-12
13
14
15
16

MCDD High Density
Overview & Tech Specs
Shell Dimensions
Contact Terminations
Create a Part
Additional Options

17-18
19
20
21
22

MCBX Combo-D
Overview & Tech Specs
Shell Dimensions
Contact Terminations
Create a Part
Additional Options

23-24
25
26-27
28
29

Removable Contacts
Size 20 & 22 Contacts
Size 8 Contacts - Power, High Voltage, and Coax

30
31

Accessories
Backshells & Boardlocks
Panel Mount Sealing Flange

32
33

Mounting Options

34

Locking Systems
Mounting Hole for Angle Bracket

35
35

Test Data
MCD, MCDD and MCBX Test Data

36

Positronic
MACH-D General Information
Positronic MACH-D connectors are built with precision

worries and allows the connector to exceed our customers’machined shells that provide superior EMI shielding. EMI

needs for quality and reliability. The MACH-D offers standard

shielding protects against electronic disruptions, guarding

and high density signal contact arrangements as well as hybrid

against data loss, and defending against system failure. The

versions, which combine power and signal in a single connector

MACH-D design and manufacturing process removes thesebody. A wide variety of accessories are also available.

MCD

MCDD

1 to 5

Shell sizes

MCBX
1 to 6

Shell material

Machined aluminum, stainless steel

Shell finish

Electroless nickel, passivated stainless steel, cadmium, chemical conversion coating

Contact size

#20

#22

#8, #20

Current rating

Up to 17A

Up to 12A

Up to 75A

Female contact design

PosiBand® Closed Entry (LSA for size 8)

Contact termination

Crimp
Solder Cup
Solder PCB
Press-Fit

Insulator material

DAP, PBTPBTInsulator color

Green (DAP), Blue (PBT)

Blue
Trapezoidal shape of shell

Polarization
Number of layouts
Locking system

THE SCIENCE OF CERTAINTY

5

6

25

Jackscrews

2

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Positronic
MACH-D General Information

PLATING OPTIONS
MACH-D Connectors
SHELL PLATINGCODESHELL MATERIAL

ROHS COMPLIANT

PLATING SPECIFICATIONSElectroless nickel

K

Aluminum

YES

ASTM B733, Type V, SC2, Class 4

Stainless steel,passivatedS

Stainless steel

YES

SAE AMS2700 Type 6
Comparable to MIL-DTL-24308 Code P

CadmiumU

AluminumNO

SAE AMS-QQ-P-416 Type II, Class 2
Comparable to MIL-DTL-24308 Code F

Chemicalconversion

T

AluminumYES

MIL-DTL-5541, Type II,Class 1A and Class 3

The above plating images are software-generated and may differ from the actual product appearance.

The Advantages of Stainless Steel Shells
D-Sub connector shells are typically made from steel, aluminum, or brass. Although these are strong materials, they are vulnerable tomoisture and subsequent corrosion. Plating the shell with a protective coating helps abate corrosion, but plating materials are vulnerable
and can also be hazardous to the environment -- especially cadmium. There is an increasing industry appetite for shell material options thatcan survive extremely harsh conditions and be environmentally green.
To address this need, Positronic offers stainless steel shells as a standard option on a variety of our D-Sub connector products -- including
MACH-D. Stainless steel does not easily corrode and it can outperform nearly any plating material option in a salt spray test. It is also
resistant to high temperatures and is very mechanically robust. Our expertise in stainless steel connector shells is evidenced by the fact that
Positronic is approved to manufacture over 600 part numbers as part of the MIL-DTL-24308 QPL. That’s more than any other connector
manufacturer in the industry. Give stainless steel the opportunity to prove why it is quickly becoming one of the most desirable D-Sub shellmaterials available on the market today!

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3

THE SCIENCE OF CERTAINTY

Positronic
MACH-D General Information

NEW ACCESSORIES & FEATURESEMI Grounding Strips

Mating side EMI grounding
strips allow for shell-toshell connector grounding

Keyed / Polarized Jackscrew System
This keyed jackscrew system functions by way ofcorresponding keyways on the Code K rotating malejackscrew and Code S fixed female jackpost. Whenused properly, this system allows for 36 unique key
combinations, which are user-configurable. The rotating
male jackscrews feature an internal hex head for troublefree rotation.

Banding Feature on
Rear Connector Shell
Diamond knurl

For applications requiring both 360 degree braidshield termination as well as desirable strain relief
characteristics, the new diamond knurl banding feature
is a perfect solution.
This is an option on the rear shell of all MACH-D
connectors by selecting Code C in the Backshells &Boardlocks step.
This feature is designed for use with standard bandingstyle clamps and tooling. The diamond knurl is ideal inpreventing braid rotation and slippage.

THE SCIENCE OF CERTAINTY

4

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Positronic
MACH-D General Information

M24308 AT A GLANCE
Overview
The M24308 D-Subminiature connector is a standardized military connector, defined by United States military
specification MIL-DTL-24308. Small enough to fit into tight spaces and with proven reliability, M24308 connectors
are an ideal choice for mission-critical tasks where connector performance cannot be a question.

About M24308
M24308 connectors come in many different styles with a variety of options for class, contact termination, and type. They are designed tooperate between -55°C and +125°C. Compact and spatially efficient, M24308 connectors are ideal for applications requiring high density
packaging. You can find these connectors in a variety of applications from communication and information technology to aircraft, missiles,
and satellites.
Positronic products meet or exceed the requirements set forth within the M24308 specification. Our connectors have gone through rigorous
testing to certify quality and performance. They are built for mission-critical applications – where failure is not an option.
Positronic products are part of the U.S. Defense Logistics Agency (DLA) Qualified Products List (QPL), which means they have met thequalification requirements, including appropriate product identification, qualification, and periodic verification testing. This designation means
the products are trusted and approved for use in any appropriate application requiring high quality components.
The MIL-DTL-24308 specification can be downloaded at https://quicksearch.dla.mil

TESTEDQUALIFIEDPROVEN

Positronic MACH-D Connectors
Although machined shell D-Sub connectors are not included as part of MIL-DTL-24308, MACH-D connectors are fully intermateable withstandard M24308-type D-Subs and, in many cases, outperform the minimum requirements as outlined in MIL-DTL-24308. For our DD, HDC,
and RD Series connectors, Positronic has held its position on the MIL-DTL-24308 QPL for over 40 years and we continue to boast the largest
M24308 QPL of any connector manufacturer. Qualified materials, processes, and supply chain are the backbone of our connectors, which werely on for every D-Sub product from industrial to military and space-grade product offerings.

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THE SCIENCE OF CERTAINTY

Positronic
MACH-D General Information

LAYOUTS
Scale 1:1

Connectors shown at actual size. Face view of male or rear view of female shown. All Positronic products utilize solid, machined contacts.

MCD STANDARD DENSITYSIZEMCDD HIGH DENSITY

1(15) #22(9) #202(15) #20(26) #223(25) #20(44) #224(37) #20(62) #225(50) #20(78) #226(104) #22

CONTACT SIZE
#20

THE SCIENCE OF CERTAINTY

6#22

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Positronic
MACH-D General Information

LAYOUTS
Scale 1:1

Connectors shown at actual size. Face view of male or rear view of female shown. All Positronic products utilize solid, machined contacts

MCBX

SIZE

MCBX

5W1 (1) #8, (4) #20

2WK2 (2) #8
1

Contact Technical Sales

8W2 (2) #16, (6) #22

3WK3 (3) #8

3W3 (3) #8

2

7W2 (2) #8, (5) #20

11W1 (1) #8, (10) #20

Contact Technical Sales

19W1 (1) #8, (18) #22

5W5 (5) #8

9W4 (4) #8, (5) #20

3

17W2 (2) #8, (15) #20

13W3 (3) #8, (10) #20

Contact Technical Sales

21W1 (1) #8, (20) #20

15W4 (4) #8, (11) #22

CONTACT SIZE
#8connectpositronic.com

7

#16

#20

#22

THE SCIENCE OF CERTAINTY

Positronic
MACH-D General Information

LAYOUTS
Scale 1:1

Connectors shown at actual size. Face view of male or rear view of female shown. All Positronic products utilize solid, machined contacts

MCBX

SIZE

8W8 (8) #8

MCBX

17W5 (5) #8, (12) #20

4

25W3 (3) #8, (22) #20

13W6 (6) #8, (7) #20

21WA4 (4) #8, (17) #20

27W2 (2) #8, (25) #20

24W7 (7) #8, (17) #20

5

36W4 (4) #8, (32) #20

43W2 (2) #8, (41) #20

47W1 (1) #8, (46) #20

6

46W4 (4) #8, (42) #20

CONTACT SIZE
#8

THE SCIENCE OF CERTAINTY

8#20

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Positronic
MACH-D General Information

POSIBAND®
PosiBand is a unique contact technology that eliminates the weaknesses of theNormal force

split-tine design.
■

The PosiBand female contact configuration features a higher cross-sectional
area of material compared to split-tine designs and a solid, unbroken ring at
the entry point, which increases the mechanical robustness of the contact.

■

PosiBand has greater surface engagement at the male and female contact
interface, resulting in more consistent electrical performance.

(male contact in gray)■

Resistance of size 22 contacts is 5 milliohms, maximum. Resistance ofsize 20 contacts is 4 milliohms, maximum. Low contact resistance offers
opportunities to use size 22 and size 20 contacts for power.

■

PosiBand has lower average insertion forces, resulting in greater ease inmating, especially in larger high density connectors. The average lower
insertion force is accomplished while meeting or exceeding performancerequirements.

■

As the PosiBand external pressure element performs the mechanical actionof the connection, the contact body material can be selected from a large
spectrum of alloys featuring higher conductivity or superior crimp deformation
properties, eliminating the need for further processing such as annealing.

■

PosiBand is qualified under SAE AS39029 and MIL-DTL-24308 specifications.
PosiBand is also qualified to the higher 40 gram contact separation test
requirement of GSFC S-311-P4/08 and GSFC S-311-P4/10.

PosiBand®
Over-separation is eliminatedSurface engagement is
consistent along the barrel

Open Entry

Legacy Closed Entry

Over-separation islimited by insulator cavity

Over-separation islimited by sleeve

Surface engagement
concentrated at the tip

Surface engagement
concentrated at the tip

TEMPERATURE RISE CURVES
Tested per IEC Publication 60512-3, Test 5a

MCD / MCBX #20 Contacts

MCDD #22 Contacts

Initial Contact Resistance: 4 milliohms, maximum.
Curve developed using 50-pin Standard Density D-subminiature connectors
loaded with size 20 crimp contacts terminated to 20 AWG wire.
Contacts
loaded inpositions
1-2

20

Contacts
loaded inpositions1-2

16

Rated Current (AMPS)

Contacts
loaded inpositions1-6

18

Rated Current (AMPS)

Initial Contact Resistance: 5 milliohms, maximum.
Curve developed using 104-pin High Density D-subminiature connectors
loaded with size 22 crimp contacts terminated to 22 AWG wire.

14

Contacts
loaded inpositions
1 - 1512
10
8Contacts
loaded inpositions
1 - 256
4

Temperature Rise (°C)

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1210

Contacts
loaded inpositions
1 - 268
6Contacts
loaded inpositions
1 - 624
20

20Contacts
loaded inpositions1-6

14

Temperature Rise (°C)

Contacts
loaded inpositions
1 - 509

Contacts
loaded inpositions
1 - 104

THE SCIENCE OF CERTAINTY

Positronic
MACH-D General Information

TEMPERATURE RISE CURVES
Tested per IEC Publication 60512-3, Test 5a

MCBX3W3 #8
Contacts

MCBX8W8 #8Contacts

MCBX8W8 #8Contacts

100

3W3
with
8 AWG

80
70

8W8 with
8 AWG HC

60
50

8W8
with
8 AWG

40
30
20

Rated Current (AMPS)

3W3 with
8 AWG HC

Rated Current (AMPS)

Rated Current (AMPS)

90

8W8
with
8 AWG
8W8
with
10 AWG
8W8
with
12 AWG

100

Temperature Rise (°C)

0 10 20 30 40 50 60 70 80 90 100 110 120 130

Temperature Rise (°C)

Temperature Rise (°C)

Curves developed using male crimp
connectors mated to female crimp
connectors.

Curves developed using male crimp
connectors mated to female crimp
connectors.

Curves developed using male crimp
connectors mated to female crimp
connectors.

Higher performing curve is developed
using high conductivity (HC) contacts.

Higher performing curve is developed
using high conductivity (HC) contacts.

Curves are developed using
standard conductivity contacts.

MCBX21WA4 #8
Contacts
7W2
with
8 AWG

7W2
with
10 AWG
7W2
with
12 AWG

Rated Current (AMPS)

Rated Current (AMPS)MCBX7W2 #8
Contacts

21W4
with
8 AWG
21W4
with
10 AWG
21W4
with
12 AWG

Temperature Rise (°C)

Temperature Rise (°C)

Curves developed using male crimp
connectors mated to female PCB
terminations.

Curves developed using male crimp
connectors mated to female PCB
terminations.

Curves are developed using
standard conductivity contacts.

Curves are developed using
standard conductivity contacts.

THE SCIENCE OF CERTAINTY

10connectpositronic.com

Positronic
MACH-D MCD Series

MCD Series connectors are standard density D-Sub connectors,
built for high-performance applications requiring rugged
machined shells. Features include:•

Machined shells for ruggedness, planarity, and precision•Interfacial seals and rear grommets for waterproofing•

Unique accessories include EMI grounding strips, keyedjackscrews, and banding backshell•

Quality and performance in accordance with MIL-DTL-24308

Trust the MCD to deliver The Science of Certainty in missioncritical applications.

TECH SPECS
GENERAL
Part Number Prefix

MCD

Performance Level

Mil/AeroSpaceflight

Conformance

Meets or exceeds performance requirements for MIL-DTL-24308; fully intermateable to MIL-DTL-24308 connectors
Meets or exceeds performance requirements for NASA Goddard GSFC-311; fully intermateable to GSFC-311 connectors

RoHS Compliance

Optional

MATERIAL

IN ACCORDANCE WITH

Insulator

PBT (PCB terminations)
DAP (wire terminations)

Insulator ColorBlue (PBT), Green (DAP)

Flammability Rating

UL 94V-0

Contact Material

Copper alloy

MIL-DTL-24308 §3.3.4; AS39029
MIL-DTL-24308 §3.3.4.2; AS39029

Contact Plating

50 µin gold over nickel or copper underplate

MIL-DTL-24308 §3.3.4.1; AS39029

Shell Material

Aluminum
Stainless steel
For other shell options, please contact Technical Sales

Shell Finish

Electroless nickel
Stainless steel, passivatedCadmium
Chemical conversion coating

MIL-DTL-24308 §3.3.5.1

UL 94

ASTM B221
ASTM A240

See page 3

Interfacial Seal

Fluorosilicone

MIL-R-25988 Type II Class I Grade 40

Rear Grommet

Fluorosilicone

MIL-R-25988 Type II Class I Grade 40

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THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCD Series

TECH SPECS
MATERIAL

IN ACCORDANCE WITHEMI Spring

Copper alloy, plated electroless nickel

ASTM B194; AMS-C-26074

Adhesive/SealantMasterBond Supreme 10AOHT
3M DP190
For low outgassing requirements, please contact Technical Sales

Conductive Gasket

CHOFORM 5513
For non-conductive options or configurations compatible with Spira-Shield metal
EMI shielding, please contact Technical Sales

ELECTRICAL

IN ACCORDANCE WITH

Working Voltage (rms)

300V

EIA-364-20

Initial Contact Resistance4 mΩ maximum

Contact Current Rating
at 70ºC Temperature Rise

18A
14A
11A
10A
9A

MIL-DTL-24308 §3.5.9; EIA-364-06;
IEC 60512-2, Test 2b

2 contacts energized
6 contacts energized
15 contacts energized
25 contacts energized
50 contacts energized

UL 1977

Insulation Resistance

5 GΩ

MIL-DTL-24308 §3.5.8; EIA-364-21

Proof Voltage (rms)

1000V

EIA-364-20

MECHANICALIN ACCORDANCE WITH

Female Contact Design

PosiBand closed entry

Contact Retention
in Insulator

40N [9 lbs] (removable contacts only)

Resistance to Soldering Heat
- Hand Soldering- Wave Soldering

360°C [680°F] for 4 seconds
260°C [500°F] for 20 seconds

Polarization

Trapezoidal shape of shell

Mechanical Durability

500 cycles

Shock and Vibration

See page 36 for more details

MIL-DTL-24308 §3.5.5; EIA-364-29

MIL-STD-202-210, condition A
MIL-STD-202-210, condition C

MIL-DTL-24308 §3.5.16; EIA-364-09

ENVIRONMENTALIN ACCORDANCE WITH

Operating Temperature-55 to 125ºC

MIL-DTL-24308 §3.5.11; EIA-364-32

Outgassing

Low outgassing options (TML <1.0%, CVCM <0.1%, RML <1.0%) are available,please contact Technical Sales.

ASTM E 595; ECSS-Q-ST-70-02C

Waterproof

IP67 (when ordered with the IP-rated panel mount accessories)

THE SCIENCE OF CERTAINTY

12

IEC 60529

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Positronic
MACH-D MCD Series

SHELL DIMENSIONSFACE VIEW

SIDE VIEW

REAR VIEW

B

K

G

MATING VIEW

10° Typ.

E

H
C
A

D

Ø3.05±0.13 [.120±.005]

1.85 [.073]*1

Dimension 'F' is recommended
for optimal performance.

F*1 The 1.85 [.073] shell thickness in the SIDE VIEW is only valid for configurations without angle brackets.

SHELL
SIZE

GENDER

Male

1
FemaleMale

2
FemaleMale

3
FemaleMale

4FemaleMale

5Femaleconnectpositronic.com

A±0.38[.015]
30.81[1.213]39.14[1.541]53.04[2.088]69.32[2.729]66.93[2.635]B±0.13[.005]
18.75[.738]
16.33[.643]
27.08[1.066]24.66[.971]
40.79[1.606]38.19[1.504]57.25[2.254]54.84[2.159]54.64[2.151]52.43[2.064]C±0.13[.005]
24.99[.984]

33.32[1.312]47.04[1.852]63.50[2.500]61.11[2.406]D±0.13[.005]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
13.03[.513]
10.74[.423]

13E±0.38[.015]

G±0.25[.010]

H±0.25[.010]

12.55[.494]

19.82[.780]

10.82[.426]

12.55[.494]

28.15[1.108]10.82[.426]

12.55[.494]

41.87[1.648]10.82[.426]

12.55[.494]

58.28[2.294]10.82[.426]

15.37[.605]

55.88[2.200]13.67[.538]

K±0.13[.005]
5.92[.233]
6.17[.243]
5.92[.233]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]

F±0.38[.015]
6.73[.265]

6.73[.265]

6.50[.256]

6.50[.256]

6.50[.256]THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCD Series

CONTACT TERMINATIONS
Solder Cup

Straight Solder

Right Angle Solder

Straight Press-fit, Code 98

C typ

E*1

B

2x 7.65[.301]
4.24[.167]

ØD typAA

0.25 [.010]*2
REF.

AØD typØ.069 [.027]
lead-in*1 Optional spacer for code

S/S6/C5/C8*2 For termination codes 38, 39,
this dimension is 5.92 [.233].

THE SCIENCE OF CERTAINTY

Ø1.24 [.049]
contact termination

See page 35 for
PCB mounting hole locations.

Code

Termination
type

A

B

C

ØD

E

0/1

Crimp

--

--

--

--

6.60 [.260]

2

Solder cup

3.18 [.125]

--

--

--

11.37 [.448]

3

Straight solder

4.31 [.170]----

0.76 [.030]

6.60 [.260]

31

Straight solder

4.31 [.170]----

1.01 [.040]

6.60 [.260]

32

Straight solder

9.52 [.375]----

0.76 [.030]

6.60 [.260]

33

Straight solder

12.70 [.500]----

0.76 [.030]

6.60 [.260]

36

Straight solder

6.00 [.236]----

0.60 [.024]

6.60 [.260]

38

Straight solder

8.45 [.333]----

0.76 [.030]

12.29 [.484]

39

Straight solder

11.63 [.458]----

0.76 [.030]

12.29 [.484]

4

Right angle
solder

4.31 [.170]

12.34 [.486]

2.84 [.112]

0.76 [.030]--

42

Right angle
solder

5.00 [.197]

10.3 [.406]

2.54 [.100]

0.60 [.024]--

5

Right angle
solder

4.31 [.170]

8.07 [.318]

2.84 [.112]

0.76 [.030]--

51

Right angle
solder

3.18 [.125]

8.07 [.318]

2.84 [.112]

0.76 [.030]--

52

Right angle
solder6.35 [.250]

8.07 [.318]

2.84 [.112]

0.76 [.030]--

53

Right angle
solder

4.31 [.170]

8.07 [.318]

2.84 [.112]

1.01 [.040]--

54

Right angle
solder

3.18 [.125]

8.07 [.318]

2.84 [.112]

1.01 [.040]--

14connectpositronic.com

Positronic
MACH-D MCD Series

CREATE A PART
MCD

•

•

•
NEW
NEW

S

5

R2

N

0

S

/AA

-15
Modifications-XXXX See bottom of following
page for typicalmodification options

Standard Density

MCD

Layout91525(9) #20(15) #20(25) #20

37
50

Contact Plating(37) #20(50) #20-15-50

Contact Gender
M
MG
P
PG

50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

Environmental Compliance

Male pin
Male pin with grounding strips
Male pin with interfacial seal
Male pin with interfacial seal &grounding strips
Female socket

/AA

RoHS

2
3
32
4
5
98

Wire, order contacts separately
Wire, crimp contacts included,
20 - 24 AWG [0.50mm2 - 0.25mm2]
Wire, M39029 crimp contacts included,
20 - 24 AWG [0.50mm2 - 0.25mm2].
Wire, fixed solder cup, 0.5mm2 [20 AWG] max.
Straight solder, 0.71 [.030] tail diameter,4.32 [.170] tail length
Straight solder, 0.71 [.030] tail diameter,9.52 [.375] tail length
Right angle solder, 0.71 [.030] tail diameter,12.34 [.486] contact extension, 4.32 [.170] tail length
Right angle solder, 0.71 [.030] tail diameter,
8.07 [.318] contact extension, 4.32 [.170] tail length
Straight press-fit

Aluminum, electroless nickel finish
Stainless steel, passivatedMounting Options
0
C7

Clearance hole, 3.05 [.120] Ø
IP67-rated inside wall mount, integrated angle brackets
with boardlocks, alignment bar, for use with right angle
PCB termination types

C8

IP67-rated inside wall mount, standoffs with boardlocks,
for use with straight PCB termination types
Rear grommet, for use with crimp connectors only
Angle brackets integrated with shell, alignment bar with
non-removable female jackposts
Angle brackets integrated with shell,clearance hole, 3.05 [.120] Ø, alignment bar
Angle brackets integrated with shell,
4-40 threaded hole, alignment bar
Angle brackets integrated with shell, 4-40 locknut,
alignment bar
Standoffs, swaged, 4-40
Locknut, swaged, 4-40
Standoffs, swaged, 4-40, boardlocks

G
R2
R6
R7
R8
S* 1
S5
S6

Locking Systems

NEW
NEW

0
E5
K
S
T2

•

•

•

ShellsK
S

Termination
0
1
19

•

37

SeriesS•

For additional options and accessories, please see following page.

None
Rotating male jackscrews, internal hex
Rotating male jackscrews, low-profile, internal hex,
36-position polarization (mates to S jackpost)
Fixed female jackposts, 36-position polarization (mates to K jackscrew)
Fixed female jackposts, washer set••

All locking system options are compatible with EN and EJ backshells

Backshells and Boardlocks

NEW

0
C*2
EN
P
N

None
Banding feature on rear shell, diamond knurl (eliminates the need for backshell)
Backshell, aluminum, top opening, machined, electroless nickel finish, grounding clips
IP67-rated inside wall mount flange, O-ring, for use with C options inMounting Options step
Boardlocks, for use with R angle brackets in Mounting Options step•

For additional options
and accessories,
please see
following page.

*1 Required if Termination Code 98 selected*2 Only available for use with Code 0, 1, 12 and 19 in Termination step

connectpositronic.com

15

THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCD Series

ADDITIONAL OPTIONS
Options shown on this page are less common than others. Customers may experience a price and/or lead time impact when selecting
these options.

Additional Termination Options
12

Wire, crimp contacts included, 26 - 30 AWG [0.12mm2 - 0.05mm2]31

Straight solder, 1.02 [.040] tail diameter, 4.32 [.170] tail length

33

Straight solder, 0.71 [.030] tail diameter, 12.70 [.500] tail length

36

Straight solder, metric footprint, 0.60 [.024] tail diameter, 6.00 [.236] tail length

38

Straight solder, 0.71 [.030] tail diameter, 8.45 [.333] tail length

39

Straight solder, 0.71 [.030] tail diameter, 11.63 [.458] tail length

42

Right angle solder, metric footprint, 0.61 [.024] tail diameter, 10.31 [.406] contact extension, 5.00 [.197] tail length

51

Right angle solder, 0.71 [.030] tail diameter, 8.07 [.318] contact extension, 3.18 [.125] tail length

52

Right angle solder, 0.71 [.030] tail diameter, 8.07 [.318] contact extension, 6.35 [.250] tail length

53

Right angle solder, 1.02 [.040] tail diameter, 8.07 [.318] contact extension, 4.32 [.170] tail length

54

Right angle solder, 1.02 [.040] tail diameter, 8.07 [.318] contact extension, 3.18 [.125] tail length

Additional Mounting Options
C5

IP67-rated inside wall mount, standoffs, for use with termination codes 2, 3, and 98

C6

IP67-rated inside wall mount, integrated angle brackets, alignment bar, for use with right angle PCB termination types

Additional Backshell Options
EJ

Backshell, aluminum, top opening, machined, chemical conversion coating, grounding clips

Additional Locking Systems Options
T

Fixed female jackposts, compatible with EN and EJ backshells

Additional Shells Options
T

Aluminum, chemical conversion coatingU

Aluminum, cadmium finish - omit Code /AA from Environmental Compliance step when selecting this option

Typical Modification Options
•
•
•
•
•
•
•
•

Low outgassing per ASTM E595 and ECSS-Q-ST-70-02C
Solder coated contact tails
Thermocouple contacts
Blind mate hardware
Protective dust caps
EMI dust caps
ESD packaging
100% inspection or other increased inspection levels

Please contact Technical Sales for additional modification options not listed here and for part numbering details.

THE SCIENCE OF CERTAINTY

16

connectpositronic.com

Positronic
MACH-D MCDD Series

MCDD Series connectors are high density D-sub
connectors, built for high performance applications
requiring rugged machined shells. Features include:•

Machined shells for ruggedness, planarity, and precision•Interfacial seals and rear grommets for waterproofing•

Unique accessories include EMI grounding strips, keyedjackscrews, and banding backshell•

Quality and performance in accordance with MIL-DTL-24308

Trust the MCDD to deliver The Science of Certainty in
mission-critical applications.

TECH SPECS
GENERAL
Part Number Prefix

MCDD

Performance Level

Mil/AeroSpaceflight

Qualifications

Meets or exceeds performance requirements for MIL-DTL-24308; fully intermateable to MIL-DTL-24308 connectors
Meets or exceeds performance requirements for NASA Goddard GSFC-311; fully intermateable to GSFC-311 connectors

RoHS Compliance

Optional

MATERIAL

IN ACCORDANCE WITH

Insulator

PBT

MIL-DTL-24308 §3.3.5.1

Insulator ColorBlue (PBT)

Flammability Rating

UL 94V-0

Contact Material

Copper alloy

MIL-DTL-24308 §3.3.4; AS39029
MIL-DTL-24308 §3.3.4.2; AS39029

Contact Plating

50 µin gold over nickel or copper underplate

MIL-DTL-24308 §3.3.4.1; AS39029

Shell Material

Aluminum
Stainless steel
For other shell options, please contact Technical Sales

Shell Finish

Electroless nickel
Stainless steel, passivatedCadmium
Chemical conversion coating

UL 94

ASTM B221
ASTM A240

See page 3

Interfacial Seal

Fluorosilicone

MIL-R-25988 Type II Class I Grade 40

Rear Grommet

Fluorosilicone

MIL-R-25988 Type II Class I Grade 40

connectpositronic.com

17

THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCDD Series

TECH SPECS
MATERIAL

IN ACCORDANCE WITHEMI Spring

Copper alloy, plated with electroless nickel

ASTM B194; AMS-C-26074

Adhesive/SealantMasterBond Supreme 10AOHT
3M DP190
For low outgassing requirements, please contact Technical Sales

Conductive Gasket

CHOFORM 5513
For non-conductive options or configurations compatible with Spira-Shield metal
EMI shielding, please contact Technical Sales

ELECTRICAL

IN ACCORDANCE WITH

Working Voltage (rms)

300V

EIA-364-20

Initial Contact Resistance

5 mΩ maximum

Contact Current Rating
at 70ºC Temperature Rise

12A
10A
7.5A
6.5A
5.0A

MIL-DTL-24308 §3.5.9; EIA-364-06;
IEC 60512-2, Test 2b

2 contacts energized
6 contacts energized
26 contacts energized
62 contacts energized
104 contacts energized

UL 1977

Insulation Resistance

5 GΩ

MIL-DTL-24308 §3.5.8; EIA-364-21

Proof Voltage

1000V

EIA-364-20

MECHANICALIN ACCORDANCE WITH

Female Contact Design

PosiBand closed entry

Contact Retention
In Insulator

40N [9 lbs] (removable contacts only)

Resistance To Soldering Heat
- Selective Soldering- Wave Soldering

360°C [680°F] for 4 seconds
260°C [500°F] for 20 seconds

Polarization

Trapezoidal shape of shell

Mechanical Durability

500 cycles

Shock and Vibration

See page 36 for more details

MIL-DTL-24308 §3.5.5; EIA-364-29

MIL-STD-202-210, condition A
MIL-STD-202-210, condition C

MIL-DTL-24308 §3.5.16; EIA-364-09

ENVIRONMENTALIN ACCORDANCE WITH

Operating Temperature-55 to 125ºC

Outgassing

Low outgassing options (TML <1.0%, CVCM <0.1%, RML <1.0%) are available,please contact Technical Sales.

Waterproof

IP67 (when ordered with the IP-rated panel mount accessories)

THE SCIENCE OF CERTAINTYMIL-DTL-24308 §3.5.11; EIA-364-32

18

ASTM E 595;
ECSS-Q-ST-70-02C
IEC 60529

connectpositronic.com

Positronic
MACH-D MCDD Series

SHELL DIMENSIONSFACE VIEW

SIDE VIEW

REAR VIEW

B

K

G

MATING VIEW

10° Typ.

E

H
C
A

D

Ø3.05±0.13 [.120±.005]

1.85 [.073]*1

Dimension 'F' is recommended
for optimal performance.

F*1 The 1.85 [.073] shell thickness in the SIDE VIEW is only valid for configurations without angle brackets.

SHELL
SIZE

GENDER

Male

1
FemaleMale

2
FemaleMale

3
FemaleMale

4FemaleMale

5FemaleMale

6Femaleconnectpositronic.com

A±0.38[.015]
30.81[1.213]39.14[1.541]53.04[2.088]69.32[2.729]66.93[2.635]69.32[2.729]B±0.13[.005]
18.75[.738]
16.33[.643]
27.08[1.066]24.66[.971]
40.79[1.606]38.19[1.504]57.25[2.254]54.84[2.159]54.64[2.151]52.43[2.064]58.01[2.284]55.60[2.189]C±0.13[.005]
24.99[.984]

33.32[1.312]47.04[1.852]63.50[2.500]61.11[2.406]63.50[2.500]D±0.13[.005]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
13.03[.513]
10.74[.423]
14.61[.575]
12.32[.485]

19E±0.38[.015]

G±0.25[.010]

H±0.25[.010]

12.55[.494]

19.82[.780]

10.82[.426]

12.55[.494]

28.15[1.108]10.82[.426]

12.55[.494]

41.87[1.648]10.82[.426]

12.55[.494]

58.28[2.294]10.82[.426]

15.37[.605]

55.88[2.200]13.67[.538]

16.97[.668]

59.03[2.324]15.24[.600]

K±0.13[.005]
5.92[.233]
6.17[.243]
5.92[.233]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]

F±0.38[.015]
6.73[.265]

6.73[.265]

6.50[.256]

6.50[.256]

6.50[.256]

6.50[.256]THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCDD Series

CONTACT TERMINATIONSStraight Solder

Right Angle Solder

Straight Press-fit, Code 98

C typ

E*1

2x 7.65[.301]

B

4.24[.167]
0.51 [0.20]
0.25 [.010]*
REF.

A

2

A

0.51 [0.20]*1 Optional spacer for code S/S6/C5/C8*2 For termination codes 38, 39, this dimension isØ1.24 [.049]
contact termination

3.00 [.118].

THE SCIENCE OF CERTAINTY

Ø.069 [.027]
lead-inSee page 35 for PCB mounting hole locations.

Code

Termination
type

A

B

C

E

0/1

Crimp

--

--

--

10.41 [.410]

3

Straight solder

3.81 [.150]----

10.41 [.410]

32

Straight solder

7.62 [.300]----

10.41 [.410]

33

Straight solder

12.70 [.500]----

10.41 [.410]

38

Straight solder

5.53 [.218]----

12.29 [.484]

39

Straight solder

8.71 [.343]----

12.29 [.484]

4(Shell sizes 1-4)

Right angle
solder

3.18 [.125]

12.34 [.486]

1.98 [.078]--

4(Shell sizes 5-6)

Right angle
solder

3.18 [.125]

12.34 [.486]

2.08 [.082]--

51(Shell sizes 1-4)

Right angle
solder

3.18 [.125]

8.07 [.318]

1.98 [.078]--

51(Shell sizes 5-6)

Right angle
solder

3.18 [.125]

8.07 [.318]

2.08 [.082]--

52(Shell sizes 1-4)

Right angle
solder6.35 [.250]

8.07 [.318]

1.98 [.078]--

52(Shell sizes 5-6)

Right angle
solder6.35 [.250]

8.07 [.318]

2.08 [.082]--

20

connectpositronic.com

Positronic
MACH-D MCDD Series

CREATE A PARTMCDD

For additional options and accessories, please see following page.

62

S

3

S

0

K

S

/AA

-15
Modifications

•

•

•
NEW
NEW

•

SeriesHigh Density

MCDD

Layout152644(15) #22(26) #22(44) #22

Contact Plating
62
78
104

(62) #22(78) #22(104) #22-15
-50

50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

Environmental ComplianceContact Gender
M
MG
P
PG
S

/AA

Male pin
Male pin with grounding strips
Male pin with interfacial seal
Male pin with interfacial seal & grounding strips
Female socket

RoHS

K
S

Aluminum, electroless nickel finish
Stainless steel, passivated

19
3
32
4
98

Locking Systems

Wire, order contacts separately
Wire, crimp contacts included,
22 - 30 AWG [0.3 mm² - 0.05 mm²]
Wire, M39029 crimp contacts included,
22 - 28 AWG [0.3 mm² - 0.08 mm²]
Straight solder, 0.51 [.020] tail diameter, 3.81 [.150] tail length
Straight solder, 0.51 [.020] tail diameter, 7.62 [.300] tail length
Right angle solder, 0.51 [.020] tail diameter, 12.34 [.486]
contact extension, 3.17 [.125] tail length
Straight press-fit

NEW

0
E5
K

NEW

S
T2

None
Rotating male jackscrews internal hex
Rotating male jackscrews, low-profile, internal hex,
36-position polarization (mates to S jackpost)
Fixed female jackposts, 36-position polarization(mates to K jackscrew)
Fixed female jackposts, washer set

Mounting Options
NEW

0
C7

Clearance hole, 3.05 [.120] Ø
IP67-rated inside wall mount, integrated angle brackets withboardlocks, alignment bar, for use with right angle PCB
termination types

C8

IP67-rated inside wall mount, standoffs with boardlocks,
for use with straight PCB termination types
Rear grommet, for use with crimp connectors only
Angle brackets integrated with shell, alignment bar with
non-removable female jackposts
Angle brackets integrated with shell,clearance hole, 3.05 [.120] Ø, alignment bar
Angle brackets integrated with shell, 4-40 threaded hole,alignment bar
Angle brackets integrated with shell, 4-40 locknut, alignment bar
Standoffs, swaged, 4-40
Locknut, swaged, 4-40
Standoffs, swaged, 4-40, boardlocks

G
R2
R6
R7
R8
S* 1
S5
S6

•

•

All locking system options are compatible with EN and EJ backshells

Backshells & Boardlocks•••

ShellsTermination
0
1•-XXXX See bottom of following
page for typicalmodification options

0
C*2
EN
P
N

•

None
Banding feature on rear shell, diamond knurl (eliminates the need for backshell)
Backshell, aluminum, top opening, machined, electroless nickel finish, grounding clips
IP67-rated inside wall mount flange, O-ring, for use with C options inMounting Options step
Boardlocks, for use with R angle brackets in Mounting Options step

For additional options
and accessories,
please see
following page.

*1 Required if Termination Code 98 selected*2 Only available for use with Code 0, 1 and 19 in Termination step

connectpositronic.com

21

THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCDD Series

ADDITIONAL OPTIONS
Options shown on this page are less common than others. Customers may experience a price and/or lead time impact when selecting
these options.

Additional Termination Options
2

Wire, removable solder cup, 22 - 30 AWG [0.3mm2-0.05mm2]33

Straight solder, 0.51 [.020] tail diameter, 12.70 [.500] tail length

38

Straight solder, 0.51 [.020] tail diameter, 5.53 [.218] tail length

39

Straight solder, 0.51 [.020] tail diameter, 8.71 [.343] tail length

51

Right angle solder, 0.51 [.020] tail diameter, 8.07 [.318] contact extension, 3.18 [.125] tail length

52

Right angle solder, 0.51 [.020] tail diameter, 8.07 [.318] contact extension, 6.35 [.250] tail length

Additional Mounting Options
C5

IP67-rated inside wall mount, standoffs, for use with termination codes 2, 3, and 98

C6

IP67-rated inside wall mount, integrated angle brackets, alignment bar, for use with right angle PCB termination types

Additional Backshell Options
EJ

Backshell, aluminum, top opening, machined, chemical conversion coating, grounding clips

Additional Locking Systems Options
T

Fixed female jackposts, compatible with EN and EJ backshells

Additional Shells Options
T

Aluminum, chemical conversion coatingU

Aluminum, cadmium finish - omit Code /AA from Environmental Compliance step when selecting this option

Typical Modification Options
•
•
•
•
•
•
•
•

Low outgassing per ASTM E595 and ECSS-Q-ST-70-02C
Solder coated contact tails
Thermocouple contacts
Blind mate hardware
Protective dust caps
EMI dust caps
ESD packaging
100% inspection or other increased inspection levels

Please contact Technical Sales for additional modification options not listed here and for part numbering details.

THE SCIENCE OF CERTAINTY

22connectpositronic.com

Positronic
MACH-D MCBX Series
MCBX Series connectors are mixed density, combination
D-Sub connectors built for high-performance applications
requiring rugged machined shells. Features include:• Ability to mix power and signal together in one D-Sub
package• Twenty-five (25) layout options available• Machined shells for ruggedness, planarity, and precision• Unique accessories include EMI grounding strips, keyedjackscrews, and banding backshell• Quality and performance in accordancewith MIL-DTL-24308
Trust the MCBX to deliver The Science of Certainty in
mission-critical applications.

TECH SPECS
GENERAL
Part Number Prefix

MCBX

Performance Level

Mil/AeroSpaceflight

Qualifications

Meets or exceeds performance requirements for MIL-DTL-24308
Meets or exceeds performance requirements for NASA Goddard GSFC-311

RoHS Compliance

Optional

MATERIAL

IN ACCORDANCE WITH

Insulator

PBT

Insulator ColorBlue (PBT)

Flammability Rating

UL 94V-0

Contact Material

Copper alloy

MIL-DTL-24308 §3.3.4; AS39029
MIL-DTL-24308 §3.3.4.2; AS39029

Signal Contact Plating

50 µin gold over nickel or copper underplate

MIL-DTL-24308 §3.3.4.1; AS39029
MIL-DTL-24308 §3.3.4.2; AS39029

Power Contact Plating

50 μin gold over nickel or copper underplate

MIL-DTL-24308 §3.3.4.1

Shell Material

Aluminum
Stainless steel
For other shell options, please contact Technical Sales

Shell Finish

Electroless nickel
Stainless steel, passivatedCadmium
Chemical conversion coating

Interfacial Seal

Contact Technical Sales

Rear Grommet

Contact Technical Sales

connectpositronic.com

MIL-DTL-24308 §3.3.5.1

UL 94

ASTM B221
ASTM A240

See page 3

23

THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCBX Series

TECH SPECS
MATERIAL

IN ACCORDANCE WITHEMI Spring

Copper alloy, plated with electroless nickel

Adhesive/Sealant

RTV 133
MasterBond Supreme 10AOHT
3M DP190
For low outgassing requirements, please contact Technical Sales

Conductve Gasket

CHOFORM 5513
For non-conductive options or configurations compatible with Spira-Shield
metal EMI shielding, please contact Technical Sales

ELECTRICAL

ASTM B194; AMS-C-26074

IN ACCORDANCE WITH

Working Voltage (rms)

300V

EIA-364-20

Initial Contact Resistance

Size 8Size 16Size 20Size 22

Contact Current Rating
at 70ºC Temperature Rise

Up to 75A, see page 10

Insulation Resistance

5 GΩ

MIL-DTL-24308 §3.5.8; EIA-364-21

Proof Voltage

1000V

EIA-364-20

0.5 mΩ maximum
1 mΩ maximum
4 mΩ maximum
5 mΩ maximum

MIL-DTL-24308 §3.5.9;
EIA-364-06;
IEC 60512-2, Test 2b
UL 1977

MECHANICALIN ACCORDANCE WITH

Female Contact Design

PosiBand Closed Entry (LSA for size 8)

Contact Retention
In Insulator

40N [9 lbs] (Applies to removable signal contacts)
98N [22 lbs] (Applies to size 8 contacts)

Resistance To Soldering Heat
- Selective Soldering- Wave Soldering

360°C [680°F] for 4 seconds
260°C [500°F] for 20 seconds

Polarization

Trapezoidal shape of shell

Mechanical Durability

500 cycles

MIL-STD-202-210, condition A
MIL-STD-202-210, condition C

MIL-DTL-24308 §3.5.16; EIA-364-09

ENVIRONMENTALIN ACCORDANCE WITH

Operating Temperature-55 to 125ºC

Outgassing

Low outgassing options (TML <1.0%, CVCM <0.1%, RML <1.0%) areavailable, please contact Technical Sales.

Waterproof

Contact Technical Sales

THE SCIENCE OF CERTAINTYMIL-DTL-24308 §3.5.5;
EIA-364-29

MIL-DTL-24308 §3.5.11; EIA-364-32

24

ASTM E 595;
ECSS-Q-ST-70-02C

connectpositronic.com

Positronic
MACH-D MCBX Series

SHELL DIMENSIONSFACE VIEW

SIDE VIEW

REAR VIEW

B

K

G

MATING VIEW

10° Typ.

E

H
C
A

D

Ø3.05±0.13 [.120±.005]

1.85 [.073]*1

Dimension 'F' is recommended
for optimal performance.

F*1 The 1.85 [.073] shell thickness in the SIDE VIEW is only valid for configurations without angle brackets.

SHELL
SIZE

GENDER

Male

1
FemaleMale

2
FemaleMale

3
FemaleMale

4FemaleMale

5FemaleMale

6Femaleconnectpositronic.com

A±0.38[.015]
30.81[1.213]39.14[1.541]53.04[2.088]69.32[2.729]66.93[2.635]69.32[2.729]B±0.13[.005]
18.75[.738]
16.33[.643]
27.08[1.066]24.66[.971]
40.79[1.606]38.19[1.504]57.25[2.254]54.84[2.159]54.64[2.151]52.43[2.064]58.01[2.284]55.60[2.189]C±0.13[.005]
24.99[.984]

33.32[1.312]47.04[1.852]63.50[2.500]61.11[2.406]63.50[2.500]D±0.13[.005]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
10.19[.401]
7.90[.311]
13.03[.513]
10.74[.423]
14.61[.575]
12.32[.485]

25E±0.38[.015]

G±0.25[.010]

H±0.25[.010]

12.55[.494]

19.82[.780]

10.82[.426]

12.55[.494]

28.15[1.108]10.82[.426]

12.55[.494]

41.87[1.648]10.82[.426]

12.55[.494]

58.28[2.294]10.82[.426]

15.37[.605]

55.88[2.200]13.67[.538]

16.97[.668]

59.03[2.324]15.24[.600]

K±0.13[.005]
5.92[.233]
6.17[.243]
5.92[.233]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]
5.84[.230]
6.17[.243]

F±0.38[.015]
6.73[.265]

6.73[.265]

6.50[.256]

6.50[.256]

6.50[.256]

6.50[.256]THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCBX Series

CONTACT TERMINATIONS
Solder Cup

Straight Solder (Standard Density)

A

A

A

Ø 0.76 [.030]

ØDØ 0.51[.020]

Straight Solder, code 65

0.64[.025]

AØ 0.71[.028]

0.94 [.037]
across points

THE SCIENCE OF CERTAINTY

Straight Solder (High Density)

26

ØD

Code

Termination
type

A

ØD
Size 82

Solder cup

3.18 [.125]--

3

Straight solder

4.32 [.170]--

35

Straight solder

4.32 [.170]

1.98 [.078]

37

Straight solder

4.32 [.170]

3.18 [.125]

65

Straight solder

4.32 [.170]--

connectpositronic.com

Positronic
MACH-D MCBX Series

CONTACT TERMINATIONS
See page 35 for PCB mounting hole locations.

Right Angle Solder, code 5, 55

Right Angle Solder, code 5, 55

Right Angle Solder, code 5, 55

Shell size 1-4

Shell size 5

Shell size 6Size 20
signal contact
Ø0.76 [.030]

Contact
tail length
4.32 [.170]

Size 20
signal contact
Ø0.76 [.030]

Contact
tail length

9.53[.375]

Contact
extension

8.07[.318]

2.84[.112]
typ.

Contact
tail length

Size 20
signal contact
Ø0.76 [.030]

4.32 [.170]

4.32 [.170]
Contact
extension

8.07[.318]

Size 8 power contact
Ø1.98 [.078]

Size 8 power contact
Ø1.98 [.078]

Size 8 power contact
Ø1.98 [.078]

Contact
extension

8.07[.318]

2.84 [.112] typ.

13.79[.543]

12.37[.487]

2.84 [.112] typ.

Right Angle Solder, code 5, 57

Right Angle Solder, code 7 and 75

Right Angle Solder, code 7 and 75

Shell size 1-6

Shell size 1-4

Shell size 5

Size 20 signal contact
Ø0.76 [.030]

Size 8power contact
Ø3.18 [.125]

Size 8 power contact
Ø1.98 [.078]
Contact
tail length

Contact
tail length
4.32 [.170]

Contact
extension

8.07[.318]

2.84 [.112] typ.

4.32 [.170]

Size 8 power contact
Ø1.98 [.078]
Contact
tail length
4.32 [.170]

Contact
extension

10.31[.406]

21.49 [.846]

Size 20
signal contact
Ø0.61 [.024]

Contact
extension

10.31[.406]

2.54[.100] typ.
11.58 [.456]

2.54[.100] typ.
14.12 [.556]

Right Angle Solder, code 7 and 77

Right Angle Solder, code 85, shell size 1-5

Shell size 1-5

With FRT4201D or MRT4201D shielded contacts

Size 20 signal contact
Ø0.61 [.024]

Contact
tail length
4.32 [.170]

Size 8power
contact
Ø3.18[.125]

Contact
extension

10.31[.406]

2.54[.100] typ.
21.49 [.846]

connectpositronic.com

Ø0.71 [.028]
Contact
taillength4.32 [.170]
Contact A
extension
12.85 [.506]

27

Size 20
signal contact
Ø0.61 [.024]

2.84[.112]
typ.

Shell sizeA1

8.07 [.318]

2

8.07 [.318]

3

8.07 [.318]

4

8.07 [.318]

5*

14.76 [.581]* Supplied inverted, contact technical sales

THE SCIENCE OF CERTAINTY

Positronic
MACH-D MCBX Series

CREATE A PARTMCBXFor additional options and accessories, please see following page.

17W2

S

55

R7

0

0

S

/AA

-15
Modifications••

SeriesCombo-D

MCBX

LayoutSHELL SIZE 1
2WK2 (2) #8
5W1(1) #8, (4) #20
SHELL SIZE 23W3(3) #83WK3 (3) #8
7W2(2) #8, (5) #20
11W1 (1) #8, (10) #20
SHELL SIZE 35W5(5) #89W4(4) #8, (5) #20
13W3 (3) #8, (10) #20
17W2 (2) #8, (15) #20
21W1 (1) #8, (20) #20

•
NEW

•

-15
-50

SHELL SIZE 524W7(7) #8, (17) #20
36W4(4) #8, (32) #20
43W2(2) #8, (41) #20
47W1(1) #8, (46) #20

K
S

Male pin
Male pin with grounding strips
Female socket

NEW

0
E5
K

NEW

S
T2

37
5
55
57
65
85

Aluminum, electroless nickel finish
Stainless steel, passivated

None
Rotating male jackscrews internal hex
Rotating male jackscrews, low-profile, internal hex,
36-position polarization (mates to S jackpost)
Fixed female jackposts, 36-position polarization(mates to K jackscrew)
Fixed female jackposts, washer set

R6*1
R7*1
R8*1
S
S5
S6

Backshells & Boardlocks
0
C*2
NEW

EN
N

•

None
Banding feature on rear shell, diamond knurl(eliminates the need for backshell)
Backshell, aluminum, top opening, machined, electroless nickel finish,
grounding clips
Boardlocks, for use with R angle brackets in Mounting Options step•

For additional options
and accessories,
please see
following page.

Clearance hole, 3.05 [.120] ØAngle brackets integrated with shell, alignment bar with
non-removable female jackposts
Angle brackets integrated with shell,clearance hole, 3.05 [.120] Ø, alignment bar
Angle brackets integrated with shell, 4-40 threaded hole, alignment bar
Angle brackets integrated with shell, 4-40 locknut, alignment bar
Standoffs, swaged, 4-40
Locknut, swaged, 4-40
Standoffs, swaged, 4-40, boardlocks

THE SCIENCE OF CERTAINTY•

All locking system options are compatible with EN and EJ backshells

Mounting Options
0
R2*1

•

•

Locking Systems

Termination

2
3
35

RoHS

ShellsSHELL SIZE 6
46W4(4) #8, (42) #20

Connector ordered without contacts
Wire, signal crimp contacts included
Crimp signal & MC/FC 4012D power contacts included
Crimp signal & MC/FC 4008D power contacts included
Wire, M39029 crimp contacts included,
20 - 24 AWG [0.50mm2 - 0.25mm2].
Fixed solder cup, signal contacts only
Straight solder, signal contacts only, 4.32 [.170] tail length
Straight solder, signal and 1.98 [.078] Ø power contacts,
4.32 [.170] tail length
Straight solder, signal and 3.18 [.125] Ø power contacts,
4.32 [.170] tail length
Right angle solder, signal contacts only,
8.07 [3.18] signal contact extension
Right angle solder, signal and 1.98 [.078] Ø power contacts,
8.07 [3.18] signal contact extension
Right angle solder, signal and 3.18 [.125] Ø power contacts,
8.07 [3.18] signal contact extension
Straight solder, signal and size 8 shielded contacts,
4.32 [.170] tail length
Right angle solder, signal and size 8 shielded contacts,
8.07 [3.18] signal contact extension

50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

Environmental Compliance/AA

Other size 8 contact styles can be ordered separately - see Contacts section

0
1
11
15
19

•

Contact Plating

SHELL SIZE 48W8(8) #813W6(6) #8, (7) #20
17W5(5) #8, (12) #20
21WA4 (4) #8, (17) #20
25W3(3) #8, (22) #20
27W2(2) #8, (20) #20

Contact Gender
M
MG
S

•

-XXXX See bottom of
following page fortypical modification
options*1 Alignment bar is not included for 2WK2, 3WK3, 3W3, 5W5, and 8W8 Layouts withright angle termination styles.

*2 Only available for use with Code 0, 1, 11, 12, 15 and 19 in Termination step28

connectpositronic.com

Positronic
MACH-D MCBX Series

ADDITIONAL OPTIONS
Options shown on this page are less common than others. Customers may experience a price and/or lead time impact when selecting
these options.

Additional Termination Options
12

Crimp signal & MC/FC 4016D power contacts included

36

Straight solder, signal and 2.39 [.094] Ø power contacts included, 4.32 [.170] tail length

7

Right angle solder, metric footprint, signal contacts included, 10.31 [.406] contact extension

75

Right angle solder, metric footprint, signal and 1.98 [.078] Ø power contacts included, 10.31 [.406] contact extension

77

Right angle solder, metric footprint, signal and 3.18 [.125] Ø power contacts included, 10.31 [.406] contact extension

Additional Backshell Options
EJ

Backshell, aluminum, top opening, machined, chemical conversion coating, grounding clips

Additional Locking Systems Options
T

Fixed female jackposts, compatible with EN and EJ backshells

Additional Shells Options
T

Aluminum, chemical conversion coatingU

Aluminum, cadmium finish - omit Code /AA from Environmental Compliance step when selecting this option

Typical Modification Options
•
•
•
•
•
•
•
•
•
•

Low outgassing per ASTM E595 and ECSS-Q-ST-70-02C
Solder coated contact tails
Thermocouple contacts
IP-rated waterproofing
Blind mate hardware
Protective dust caps
EMI dust caps
Panel mount with EMI O-ring
ESD packaging
100% inspection or other increased inspection levels

Please contact Technical Sales for additional modification options not listed here and for part numbering details.

connectpositronic.com

29

THE SCIENCE OF CERTAINTY

Positronic
MACH-D Removable Contacts#20 & #22 SIGNAL CONTACTS
M
•

•

•

60

18

D

CO

/AA

-15
(omit step forthermocouples) Contact Plating

Gender
M
F

-15
-50

Male pin
Female socket, closed entry

50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

Environmental Compliance

Termination
C

/AA

Crimp

RoHS
(omit step if not used) Options

Contact Style
60
80

•

C

CH*1
AL*1
CU
CO

#20 signal contact#22 signal contact

Crimp Barrel Size
18
20
22
26

D
D2

•
•

Thermocouple, Chromel (+), white
Thermocouple, Alumel (-), green
Thermocouple, Copper (+), red
Thermocouple, Constantan (-), yellow

Product Category

For use with 18 AWG wire, available on Contact Style 60
For use with 20 - 24 AWG wire, available on Contact Style 60
For use with 22 - 30 AWG wire, available on Contact Style 80
For use with 26 - 30 AWG wire, available on Contact Style 80••

Male D-Sub contacts
Female PosiBand D-Sub contacts*1 Chromel® and Alumel® are registered trademarks of the Hoskins Manufacturing Company

M39029 MILITARY CONTACT PART NUMBERS
PART NUMBER

SeriesSize

GenderFemaleContact Style

Stranded
AWG [mm2]

Color Code

Plating

Type

M39029/57-354

MCDD, MCBX

#22

FemaleClosed entry#22-28 [.3 - .08]

Orange / Green / Yellow

50µin Au (min) over Ni

Crimp

M39029/58-360

MCDD, MCBX

#22

Male

n/a

#22-28 [.3 - .08]

Orange / Blue / Black50µin Au (min) over Ni

Crimp

M39029/57-982

MCDD, MCBX

#22

FemaleClosed entry#22-28 [.3 - .08]

White / Gray / Red

50µin Au (min) over Cu

Crimp

M39029/58-986

MCDD, MCBX

#22

Male

n/a

#22-28 [.3 - .08]

White / Gray / Blue

50µin Au (min) over Cu

Crimp

M39029/63-368

MCD, MCBX#20

FemaleClosed entry#20-24 [.5 -.25]

Orange / Blue / Gray

50µin Au (min) over Ni

Crimp

M39029/64-369

MCD, MCBX

#20

Male

n/a

#20-24 [.5 -.25]

Orange / Blue / White

50µin Au (min) over Ni

Crimp

M39029/63-928

MCD, MCBX#20

FemaleClosed entry#20-24 [.5 -.25]

White / Red / Gray

50µin Au (min) over Cu

Crimp

M39029/64-968

MCD, MCBX

#20

Male

n/a

#20-24 [.5 -.25]

White / Blue/ Gray

50µin Au (min) over Cu

Crimp

Positronic is qualified to supply the legacy design, as well as the PosiBand design. If the requirement is for PosiBand-style female contacts, add "POSIBAND" to the end of the M39029 part number (e.g.
M39029/57-354 POSIBAND).

THE SCIENCE OF CERTAINTY

30

connectpositronic.com

Positronic
MACH-D Removable Contacts#8 POWER CONTACTS
M
•

•

•

•

C

40

08

D

S

/AA

-15

GenderM
F

Contact Plating-15-50

Male pin
Female socket, closed entry

Environmental Compliance

Termination
CS(omit step if not used) Options

S

High conductivity, available for 08 crimp barrel only

#8 power contact

Product Category

Crimp Barrel Size
08
10
12
16

RoHS

/AA

Crimp
Solder cup

Contact Style40

50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

D

D-Sub contacts

D

/AA

•

•
•
•

For use with 8 AWG wire
For use with 10 AWG wire, not available in solder cup
For use with 12 - 14 AWG wire
For use with 16 - 18 AWG wire

#8 HIGH VOLTAGE CONTACTS
M
•

•

•

•

S

48

20

-50

GenderM
F

Contact Plating
50µin Au (min) over Ni over Cu
50µin Au (min) over Cu

-15
-50

Male pin
Female socket, closed entry

Environmental Compliance

Termination
S/AA

Solder cup

RoHS

Product Category

Contact Style
48
49#8 high voltage contact, straight#8 high voltage contact, right angle

D

D-Sub contacts

D

/AA

•

•
•

Crimp Barrel Size20

For use with 20 AWG wire

#8 COAX CONTACTS
F
•

•

•

•

S

41

01

GenderMF(omit step for category 'M' contacts) Contact Plating-15*1

Male pin
Female socket, closed entry

Crimp (center), crimp (braid)
Solder cup (center), crimp (braid)
Solder cup (center), solder (braid)

Contact Style
41

50µin Au (min) over Ni over Cu

Environmental Compliance

Termination
CC
C
S

-15

/AA

RoHS

Product Category
D
M

D-Sub contacts
D-Sub contacts; 50μin Au (min) over Cu•••#8 coax contact, 50 ohm

RG Cable Number
01
02
03
04

178 B/U, 196 B/U
179 B/U, 316 B/U
180 B/U
58 B/U*1 Contact plating applies to center conductor only.

Braid conductor is plated 30µin Au (min) over Ni over Cu.

connectpositronic.com

31

THE SCIENCE OF CERTAINTY

Positronic
MACH-D Accessories

BACKSHELLS & BOARDLOCKSC

Banding feature on rear shell, diamond knurl(eliminates the need for backshell)

EN

Backshell, aluminum, top opening, machined,
electroless nickel finish, grounding clips

EJ

Backshell, aluminum, top opening, machined,chemical conversion coating, grounding clips

Diamondknurl

N

Boardlocks, for use with angle brackets

Printed circuit board (PCB)

EN Backshell shown here

THE SCIENCE OF CERTAINTY

32

connectpositronic.com

Positronic
MACH-D Accessories

PANEL MOUNT SEALING FLANGE
P

A

IP67-rated inside panel mount flange, O-ring*1,
for use with C options in Mounting Options

*2

B
*2
2.21
[.087]

R4.7 [.185]

C

SHELL
SIZE

A
±0.25 [D±.010]

B±0.25 [D±.010]

C±0.13 [.005]

1

36.68 [1.444]

17.88 [.704]

24.99 [.984]
33.32 [1.312]2

45.01 [1.772]

17.88 [.704]

3

58.90 [2.319]

17.88 [.704]

47.04 [1.852]

4

75.18 [2.960]

17.88 [.704]

63.50 [2.500]

572.80 [2.866]

20.70 [.815]

61.11 [2.406]

6

75.18 [2.960]

22.30 [.878]

63.50 [2.500]*1 Standard O-ring material: CHOFORM 5513 Ag/Cu filled silicone (form-in-place, non-removable)*2 O-ring groove dimensions compatible with Spira-Shield SS-02 metal EMI gasketing

INSIDE PANET MOUNT

Panel Cutout Dimensions

SHELL
SIZE

A

B

C

4X 3.35±0.05[.132±.002]
radius1

20.47 [.806]

11.40 [.449]

24.99 [.984]

3.30±0.05[.130±.002]

2

28.80 [1.134]

11.40 [.449]

33.32 [1.312]3

42.52 [1.674]

11.40 [.449]

47.04 [1.852]

4

59.08 [2.326]

11.40 [.449]

63.50 [2.500]

556.34 [2.218]

14.10 [.555]

61.11 [2.406]

659.51 [2.343]

15.67 [.617]

63.50 [2.500]

connectpositronic.com

A

B

C

4X
R0.81[.032]
max

For panel cutout details for use with code S keyed jackposts, contact Technical Sales.

33

THE SCIENCE OF CERTAINTY

Positronic
MACH-D Accessories

MOUNTING OPTIONS
inside wall mount, standoffs,
C5 IP67-rated
for use with termination codes 2 and 3

inside wall mount, integrated angle
C6 IP67-rated
brackets, alignment bar, for use with right-angle

inside wall mount, integrated angle
C7 IP67-rated
brackets with boardlocks, alignment bar, for

PCB termination types
standoffs

4-40 UNC
threads

use with right-angle PCB termination types
standoffs

4-40 UNC
threads

inside wall mount, standoffs
C8 IP67-rated
with boardlocks, for use with straight PCB

standoffs

4-40 UNC
threads

Boardlockbrackets integrated with shell, alignment
R2 Anglebar with non-removable female jackposts

brackets, integrated with shell,
R6 Angleclearance hole, 3.05 [.120] Ø, alignment bar

brackets, integrated with shell,
R7 Angle
4-40 threaded hole, alignment bar

brackets, integrated with shell,
R8 Angle
4-40 locknut, alignment bar

S

S5 Locknut, swaged, 4-40

S6 Standoffs, swaged, 4-40, boardlocks

termination types

standoffs
4-40 UNC
threads
Boardlock

THE SCIENCE OF CERTAINTY

34Standoffs, swaged, 4-40

connectpositronic.com

Positronic
MACH-D Accessories

LOCKING SYSTEMS
E5 Rotating male jackscrews internal hex

T

Fixed female jackposts

K

S

Fixed female jackposts, 36-position polarization(mates to K and E5 jackscrews)

Rotating male jackscrews, low-profile, internal hex,
36-position polarization (mates to S jackpost)

T2 Fixed female jackposts, washer set

MOUNTING HOLE FOR ANGLE BRACKET
Shell size
SERIES

Termination
Code

1

2

3

4

5

6

G ± 0.25 [.010]

MCD

G

4

13.76 [.542]

15.18[.598]

42

11.58 [.456]

12.85[.506]

5/51/52/53/54

9.44 [.372]

10.87[.428]

4

14.24 [.561]

15.39[.606]

16.43[.647]

51/52

10.06 [.396]

11.20[.441]

12.11[.477]

5/55/57/85

9.44 [.372]

10.87[.428]

12.36[.487]

7/75/77

11.58 [.456]

12.85[.506]

13.89[.547]

MCDD
3.18 [.125] Typ.

MCBX

connectpositronic.com

35

THE SCIENCE OF CERTAINTY

Positronic
MACH-D General Information

TEST DATA
The following tests have been conducted using applicable configurations of MCD, MCDD, and MCBX Series connectors:
Test

Test Condition

Criteria

Results

MIL-DTL-24308J

Signal contacts: 9 pound axial force, each direction

EIA-364-29

Power contacts: 22 pounds axial force, each direction

MIL-DTL-24308J @ sea level

1000V

MIL-DTL-24308J @ 70000 ft-equivalent

325V

Insulation ResistanceMIL-DTL-24308J
EIA-364-21

5 GΩ

Pass

Contact ResistanceMIL-DTL-24308J
EIA-364-06

Per MIL-DTL-24308J Table VI

Pass

Temperature Cycling

MIL-DTL-24308J
EIA-364-32, condition I (5 cycles) @ -55°C to 155°C

Connector verified with DWV, insulation resistance, mating/unmating

Pass

MIL-DTL-24308J
EIA-364-31, method IV

Connector verified with DWV, insulation resistancePass

MIL-DTL-24308J
EIA-364-28, test condition IV (sinusoidal)
10-2000 Hz, 20 g peakNo signal discontinuity longer than 1 μs, no damage

Contact Retention

Pass

Dielectric Withstanding
Voltage

Pass

Humidity

Vibration

Pass
MIL-DTL-24308J
EIA-364-28, test condition VI, letter J (random)
50-2000 Hz, 1.0 g2/Hz, 43.92 g RMS

No signal discontinuity longer than 1 μs, no damage

MIL-DTL-24308J
EIA-364-27, test condition E

No signal discontinuity longer than 1 μs, no damage

MIL-DTL-24308J
EIA-364-09

500 mating cycles

EIA-364-09 (extreme lifespan)

10000 mating cycles

MIL-DTL-24308J
EIA-364-26, test condition A

96 hours (Code T shell plating)

Shock

Durability

Pass

Pass

Salt Spray

Pass
MIL-DTL-24308J
EIA-364-26, test condition C

500 hours (Code K, S, U shell platings)

Magnetic Permeability

ASTM A342/A342M

≤ 2μ

Pass

Residual Magnetism

Goddard S-311 Level C (GSFC NMC)

≤ 20 gamma

Pass

ASTM E595, ECSS-Q-ST-70-02C

TML <1.0%, CVCM <0.1%, RML <1.0%

Pass

Outgassing

THE SCIENCE OF CERTAINTY

36

connectpositronic.com

Zero Gravity.
Zero Oxygen.
Zero Margin of Error.

When you’re dangling 150 miles above the stratosphere, systems failure is not
an option. At Positronic, we build high reliability power and signal connectors.
But our true call is to provide certainty. Rock solid, mission-critical performanceupon which you can bank life and limb, family and fortune. We consider it anhonor. We consider it an inviolable trust.
POSITRONIC. THE SCIENCE OF CERTAINTY. // www.connectpositronic.com

an Amphenol company

22 Mile Patrol.
6 Roadside IEDs.
Zero Margin of Error.

When it’s your job to detect and disarm concealed explosives, systems failure
is not an option. At Positronic, we build high reliability power and signal
connectors. But our true call is to provide certainty. Rock solid, mission-critical
performance upon which you can bank life and limb, family, fortune, freedom.
We consider it an honor. We consider it an inviolable trust.
POSITRONIC. THE SCIENCE OF CERTAINTY. // www.connectpositronic.com

an Amphenol company

Positronic
MACH-D Online

See connectpositronic.com/machd
for all other MACH-D-related
information including:✔ Footprints✔ Tooling✔ Product updates✔ Detailed dimensions✔ 2D/3D drawings

All dimensional tolerances are ± 0.38 [0.015], unless otherwise specified. Dimensions are in millimeters [inches]. All
dimensions are subject to change. Product pictures may not be identical in appearance to actual production parts.
Information in this catalog is proprietary to Positronic and its subsidiaries. Positronic believes the data contained herein to
be reliable. Since the technical information is given free of charge, the user employs such information at his own discretion
and risk. Positronic assumes no responsibility for results obtained or damages incurred from use of such information inwhole or in part.

Products described within this catalog may be protectedby one or more of the following US patents:#4,900,261*#6,835,079*#5,255,580#7,115,002

Patented in Canada, 1992

The following trademarks are owned by Positronic Industries, Inc.: Positronic Industries, Inc.®, Positronic®, Connector
Excellence®, P+ logo®, PosiBand®, PosiShop®, Optik-D™, and The Science of Certainty®. The color blue as it appears
on various connectors is a trademark of Positronic Industries, Inc., Registered in U.S. Patent and Trademark Office.

#5,329,697#8,944,697#6,260,268#9,304,263

Other patents pending

Federal Supply Code for Manufacturers
Positronic Industries: 28198
Positronic Industries SAS: FA7Y0
Positronic Asia PTE LTD: QB952

Positronic | Americas

Positronic | Europe

Positronic | Asia

Sales Offices1325 N Eldon Ave

46 route d’Engachies

3014A Ubi Rd 1 #07-01

Positronic has local sales

Springfield MO 65803 USA

F-32020 Auch Cedex 9 France

Singapore 408703

representation all over the world.

+1 800 641 4054

+33 5 6263 4491

+65 6842 1419

For the nearest sales office visit

info@connectpositronic.com

contact@connectpositronic.com

singapore@connectpositronic.com

www.connectpositronic.com/sales

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THE SCIENCE OF CERTAINTY