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MX Series
MXKeyswitch

Desktop Profile

Dimensions: Inches (mm)0.61(15.6)
0.14(3.6)

0.46(11.6)

0.61(15.6)
0.20(5.0)
0.13(3.30)

Specifications

Mechanical Motion

Voltage

12 VAC/DC max. 2 VDC min.

Linear Feel

Soft Tactile Feel

Current

10mA AC/DC max. 10µA DC min.

Operating Force

2.1 oz ±0.7 oz

2.0 oz ±0.7 oz

Insulation Resistance

100 M Ω at 100 VDC

Pretravel

0.08" ±0.24"

0.08" ±0.24"

Capacitance<2pF (at 1kHz)

Total Travel

0.16" -0.015"

0.16" -0.2"

Bounce Time

≤5 msec(at 16 in/sec actuation speed)

Tactile Force

N/A

2.3 oz ±0.7 oz

LifeMX Linear
MX Soft Tactile
MX Click Tactile
MX Alternate Action(at 5 V, 1mA, no load)
50 x 106 cycles
20 x 106 cycles
20 x 106 cycles
50 x 105 cycles

Click Tactile Feel

Alternate Action

Operating Force

1.8 oz ±0.5 oz

2.1 oz ±0.7 oz

Pretravel

0.09" ±0.24"

0.05" ±0.015"

Total Travel

0.16" -0.02"

0.16" ±0.01"

Initial Contact Resist.

200 m Ω (25 m Ω typical)

Tactile Force

2.1 oz ±0.5 oz

N/AMaterials
Plastics
Contacts
Spring

Thermoplastic, UL-rated
AuAg 10
Stainless steel

Flammability Rating

UL94HB

Solderability

Wave solder 5 seconds at 500°F

Environmental
Operating Temp. Range -10° to +70°C
Storage Temp. Range-40° to +70°C
Relative Humidity
5% to 95%, non-condensing

10-2

MX Series

Keyswitch

Mounting Options

0.197 +0.012
0.06 +- 0.006

PCB (with pins)

Metal Frame (without pins)

Circuit Board Layouts
Grid line spacing = 0.05 inch
Keyswitch without fixation pins
1-Pole1-Pole w/LED

1-Pole w/DiodeØ 0.157 +- 0.004
Ø 0.059 +- 0.002Ø 0.039 +- 0.004

Keyswitch with fixation pins
1-Pole1-Pole w/LED

1-Pole w/DiodeØ 0.157 +- 0.004
Ø 0.067 +- 0.002Ø 0.059 +- 0.002Ø 0.039 +- 0.004

Spacebar without frame

0.275 +
- 0.004Ø 0.12 +- 0.00410Ø 0.157 +- 0.0020.60 +- 0.004A+- 0.004

10-3

MX Series

Keyswitch

Keycap Dimensions

Metal Frame Cutout Dimensions

Cylindrical Type (8 mm)

Keyswitch
0.551 +
- 0.0020.82 Row E

D2 DIN6784

0.74 Row B
0.736 Row D

0.551 +
- 0.0020.704 Row C

0.06 +- 0.004

C3 DIN6784

R 0.012 Max.

A

0.43

BCDEFSpacebar(Keycap sizes 1 x 2, 1 x 2.25, 1 x 2.75)
0.166 +
- 0.0040.704

A+- 0.004
0.262 +
- 0.004
R 0.012 max

0.032 +
- 0.004

0.13

0.53 +- 0.006

Standard Type (8 mm)
0.11 +- 0.008

0.69

R 0.012 max

0.02
0.26 +- 0.004

0.55 +- 0.0020.484 +
- 0.004

0.12 +- 0.004

0.38

0.031 +
- 0.004

Spacebar(Keycap sizes 1 x 3, 1 x 7, 1 x 8, 1 x 9, 1 x 10)
0.69

0.55 +- 0.0020.13
0.11 +- 0.008

0.262 +
- 0.004

R 0.012max

0.12 +- 0.004

R 0.012max

0.484 +
- 0.004

Spacebar Mounting Options
0.26 +- 0.004A+- 0.004
Keycap (8mm)0.53 +- 0.006

0.165 +
- 0.004

Support
Housing

Leveling Mechanism Kits

Wire
PCB (with pins)

Metal Frame

Metal Frame (without pins)

10-4

Keycap Size

1x2
1 x 2, 2.5
1 x 2, 2.75

1x3

1x8

1x8
1x91 x 10

1x7

Keycap Type

Std & Cylin

A (inches)

0.94

Std & Cylin

StdCylin

Cylin

1.5

5.25

5.25

P/N w/frame

4.5

G99-0224

G99-0225

G99-0226

G99-0226 G99-0379

P/N w/o frame

G99-0742

G99-0743

G99-0744

G99-0744 G99-0745

MX Series

Keyswitch

Soldering Parameters

Ordering Information

1. Flux Station
A. Flux – Fry type GR8
B. Applied by foaming
C. Specific gravity – 0.820 g/cm3

Part Number

Description

MX1A-11DN

Standard force, momentary face plate
mount with diodeMX1A-11NN

Standard force, linear, face plate mount

2. Conveyor Speed
A. 2.3 meters/min.

MX1A-11NW

Standard force, linear, PCB mountMX1A-21NW

Higher force, linear, PCB mount

3. Pre-heat Temperature
A. +88°C measured on top surface of PCB

MX1A-31NN

Alternate action, face plate mountMX1A-31NW

Alternate action, PCB mount

4. SolderA. 63/37 alloy
B. Dry wave – no oil
C. Approximate contact with wave – 2 seconds

MX1A-C1NN

Standard force, soft tactile, face plate
mount

MX1A-C1NWStandard force, soft tactile, PCB mountMX1A-E1NN

Standard force, click tactile, face platemountMX1A-E1NW

Standard force, click tactile, PCB mount

5. Cleaning
A. Fry GR8 is non-hygroscopic flux and does not requirecleaning
B. If cleaning is required on isolated areas such as finger
connector, cold cleaning by hand with Alpha 564 isrecommended. Care must be taken to avoid solvent
entering the keymodule.

Ordering Information
1MXA

1

Keyswitch/Type

Code12345Contact
Material
AuAg1010mA/12V
max———SpecialCO
DECodeContactConfig.

ASPSTNO

B—CSpecial

D—0123CDEF

1Operating Characteristics,
Actuating Force and Key Style
SpecialMomentary, single pole, 2.1 oz, standardkeyswitch, black keystem
Momentary, single pole, 2.8 oz, spacebar,grey 37 keystem
Alternate action, single pole, 2.1 oz
Momentary, single pole, tactile feel, 2.3 oz,
clear keystem
Momentary, single pole, tactile feel, 2.8 oz,spacebar, grey 39 keystem
Momentary single pole, tactile feel 2.1 oz,“click” differential movement, blue keystem
Momentary, single pole, tactiel feel, 2.8 oz,“click” differential movement, space bar,green keystem

NNCO
KeystemD
E Configuration

CO
DE

PCB
Mounting
Pins

1

N

No pins(metal frame req)

W

With pins

Std straightfor cylin & std
keycaps

CodeNR
GY
DJ

LEDDiode
No LEDNo diode
Red LEDno diode
Green LEDno diode
Yellow LED
w/diodeNo LED
w/diodew/jumper wire
no LEDno diode

1010-5