Micro-Fit 3.0 Connector
System Product Family
Micro-Fit 3.0 Connector Systems, available in multiple circuit sizes and cable lengths
for power and signal applications, offer a 3.00mm pitch, a 10.5A maximum current
rating and many design options such as a terminal position assurance, blind-mating
and compliant pin features
Features and Advantages
Fitting nails andsolderable clips available
Offers header retention andstrain relief options

SMT, press-fit or surface mountcompatible versions available
Provides design flexibility. Offers options
to meet many application needs

High-temperature
LCP headers
Withstand 260˚C IR
reflow processes

Fully polarized housings
Prevents accidental
mismating

Positive latching
Ensures a reliableconnection

Optional terminal position
assurance (TPA) feature
Reduces assembly error that results interminal back-outs. Single row: one-pieceplug and receptacle design withintegrated secondary lock.
Dual row: two-piece TPA design

Micro-Fit BMI Connectors
Blind-mating wire-to-wire and wire-to-board connectors
Offers full range of options for every application and orientation

Fully isolated terminals
Protect against potentialdamage of terminals during
handling and mating

30 to 18 AWG terminals
available
Delivers design flexibility
to meet the power needsof a range of applications

TPA terminals and terminals withlocking tangs available
Offers design flexibility. Locking tangsecures terminals in housings. TPAterminals compatible with TPA plugs
only

Micro-Fit (Compliant Pin)
CPI Connectors
Uses eye-of-the-needle press-fit design
Provides a reliable connection

Accepts standard Micro-Fit female
and male crimp terminals
Eliminates the need to purchase orinventory additional terminals

Micro-Fit TPA Single Row Plug

Self-aligning feature molded into housings
Allows up to 2.54mm misalignment

Micro-Fit RMF(Reduced Mating Force) Terminals
Available in 22 to 24 and 26 to 30 AWG
Delivers design flexibility for a broad range ofapplications
Available with factory-applied lubricant
Increases durability to 250 mating cycles

Reduction in engagementand disengagement forces
Supports ergonomics anduser-friendly interface

The plug’s TPA retainer mates with the existing Micro-Fit TPA
Receptacle to prevent terminal back-outs in wire-to-wire applications
Prevents end product failure. Ensures both components provide areliable connection

10.0A RMF
terminal available
Delivers higher powerwith existing Micro-Fit
components. Enables
running changes tohigher amperage

Terminal position
assurance (TPA)feature with integrated
secondary lockEliminates terminal
back-outs resulting fromimproper assemblyMicro-Fit 3.0 Connector
System Product Family
Applications
Consumer

MedicalWashers and dryers

Diagnostic equipment

Freezers

Patient monitors

Gaming machines
Printers
Refrigerators

Sustainable Energy
Solar power
AutomotiveScanners

Harness manufacturers

Security systems

Non-sealed applications

Vending machines

Inside devicesRefrigerator

Office Equipment

White goods
Telecommunications/Networking
Routers and switches
Servers
Storage

Servers

Specifications
REFERENCE INFORMATION
Packaging:
UL File No.: E29179
CSA File No.: LR19980
Mates With:
Micro-Fit 3.0 Single-Row Plug
(Series 43640) and Header (Series 43650);
TPA Single-Row Receptacle (Series 171850)
Micro-Fit 3.0 Dual-Row Plug Housing(Series 43020) and Header(Series 43045 and 44914)
TPA Dual-Row Receptacle (Series 172952);
TPA-Dual Row Plug (Series 203632)
Terminal Used:
Micro-Fit 3.0 female crimp terminals 		(Series 43030 and 46235)
Designed In: Millimeters
RoHS: Yes
Halogen Free: Yes (Non-Glow-Wire Versions)
Glow Wire Capable: Option Available, Contact Molex

MECHANICAL
Contact Insertion Force (max.): 14.7N per contact
Contact Retention to Housing (min.): 24.5N
Mating Force (max.): 8N per circuit
Unmating Force (min.): 2.4N per circuit
Durability (max.): typically 30 cycles,
refer to product specifications
PHYSICAL
Housing: Nylon
Header: LCP
Contact: Various(Phosphor Bronze, Copper Alloy – see ProductSpecifications for Particular Connector System)
Operating Temperature: -40 to +105°C

ELECTRICAL
Voltage (max.): 600V
Current (max.): 8.5A
(Please see product specifications;determined by terminal used)
Contact Resistance (max.): 10 milliohms
Dielectric Withstanding Voltage: <5mA
Insulation Resistance (min.): 1,000 Megohms

Micro-Fit 3.0 Connector
System Product Family
Ordering Information
Series No.

Component

43030

Female Terminal(Available in: 0.25µm Select Tin, 0.38µm and 0.76µm Select Gold)(18 - 30AWG)

46235

Reduced Mating Force (RMF) Female Terminal, available with or without Lubricant(Available in: 0.25µm Select Tin, 0.38µm and 0.76µm Select Gold)(20 - 30AWG)

203951RMF Female Terminal (Available in: 0.25µm Select Tin)(18 AWG)

43031

Male Terminal(Available in: 0.25µm Select Tin, 0.38µm and 0.76µm Select Gold)(18 - 30AWG)

43031-5XXX

TPA Plug Male Terminal (Used with: Housing Series 200875)(Available in: Preplated Tin 1μm - 2.5μm, 0.38μm Min Selective Gold
Over 2.5μm Min Selective Tin Over 1.27μm Overall Nickel, 0.76μm Min Selective Gold Over 2.5μm Min Selective Tin Over
1.27μm Overall Nickel, 2.5μm Min Matte Tin Over 1.27μm Overall Nickel)(20 – 30AWG)

43025

Dual-Row Receptacle Housing (mates with 43020, 43045, 44914, 44242)(Available in: UL 94V-0, Glow Wire, Low-Halogen)(2 - 24 Circuits)

43020

Dual-Row Plug (mates with 43025, 45132, 245132, 172952)(Available in: UL 94V-0, Glow Wire, Low-Halogen) (Panel/Non-Panel Mount)(2 - 24 Circuits)43045

Dual-Row Header (mates with 43025, 45132, 245132, 172952)(Available in: 0.25µm Select Tin, 0.38µm and 0.76µm Select Gold)(2 - 24 Circuits)(Right Angle and Vertical Orientations; Surface Mount, Through Hole - Kinked Pin and Through Hole Termination Interface Style)

43645

Single-Row Receptacle (mates with 43640, 43650)(Available in: UL 94V-0, Glow Wire, Low-Halogen)(2 - 12 Circuits)

43640

Single-Row Plug (mates with 43645, 171850)(Available in: UL 94V-0, Glow Wire, Low-Halogen)(2 - 12 Circuits)(Panel Mount and Non-Panel Mount)200875Single Row TPA Plug (Mates with Micro-Fit 171850 and 43645)(UL94V-0)(Low Halogen)(Color – Black)(2-7 Circuits)

43650

Single-Row Header (mates with 43645, 171850)(Available in: 0.25µm Select Tin, 0.38µm and 0.76µm Select Gold)(2 - 12 Circuits)(Right Angle and Vertical Orientations; Surface Mount, Through Hole - Kinked Pin and Through Hole Termination Interface Style)

171850TPA Single-Row Receptacle (mates with 43640, 43650)(Available In: UL 94V-0, Low-Halogen)(2 - 7 Circuits)172952

TPA Dual-Row Receptacle (2 TPA parts required for each receptacle) (mates with 43020, 43045, 44914)(Available In: UL 94V-0, 94V-2, Glow Wire, Low-Halogen)(4 - 22 Circuits)(Black and Natural Color)203632

TPA Dual-Row Plug (Mates with 172952 and 43025)

172953

TPA Retainer (2 TPA parts required for each receptacle)(Available In: Low-Halogen)(4 - 22 Circuits)(Black and Natural Color)

45132

Off-the-Shelf Micro-Fit TPA Discrete Wire Cable Assemblies(Available in: 4 - 8 Circuits)(1.0M, 150.00mm, 300.00mm Lengths)

Micro-Fit 3.0 Connector
System Product Family
Ordering Information
Series No.

Component

44133

BMI Dual Row, Panel Mount Receptacle Housing (mates with 44300, 44432, 44428, 45280)(Available In: UL 94V-0, Halogen-Free)(4 - 24 Circuits)

44300

BMI Dual Row, Panel Mount Plug Housing (mates with 44133, 44769, 44764)(Available In: 4 - 24 Circuits)44428

BMI Dual Row, Surface Mount Compatible, Right Angle Headers (mates with 44769, 44764, 44133)(Available In: Tin, 0.38µm and 0.76µm Select Gold; Low-Halogen)(4 - 24 Circuits)44432

BMI Dual Row, Surface Mount Compatible, Vertical Header (mates with 44769, 44764, 44133)(Available In: Tin, 0.38µm and 0.76µm Select Gold; Low-Halogen)(4 - 24 Circuits)44764

BMI Dual Row, Right Angle PCB Receptacle Header with Press-fit Plastic Pegs (mates with 44300, 44428, 44432, 45280)(Available In: Tin, 0.38µm and 0.76µm Select Gold; Low-Halogen)(4 - 24 Circuits)44769

BMI Dual Row, Vertical Receptacle Header with Press-fit Plastic Pegs (mates with 44300, 44432, 45280, 44428)(Available In: Tin, 0.38µm and 0.76µm Select Gold; Low-Halogen)(4 - 24 Circuits)

45280

BMI Vertical Compliant Pin Header, Dual Row (mates with 44769, 44764, 44133)(Available In: Tin, 0.38µm and 0.76µm Select Gold; UL 94V-0)(4 - 24 Circuits)44914

Compliant Pin Vertical Header, Dual Row (mates with 43025, 172952)(Available In: Tin, 0.38µm and 0.76µm Select Gold; Glow Wire)(4 - 24 Circuits)

46622

BMI Single Row Header (mates with 46623, 46625)(Available in Tin, 0.38µm and 0.76µm Select Gold; UL 94V-0, Halogen-Free; Right Angle, Vertical)(2 - 7 Circuits)

46623

BMI Single Row Panel Mount Receptacle (mates with 46622)(UL 94V-0; Halogen-Free)(2 - 7 Circuits)

46625

BMI Single Row Panel Mount Plug (mates with 46622)(UL 94V-0; Halogen-Free)(2 - 7 Circuits)

Custom Product

Description
Customized Micro-Fit Overmolded Cable Assemblies

Contact Molex
Customized Micro-Fit Discrete Wire Cable Assemblies

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