KK Connectors

Molex KK Interconnection System consists of connectors that form the building block for creating thousands of different configurations. This system offers polarization features that ensure correct mating. The system incorporates offset header entry holes that provide +180°C polarization and allows both power and signal to carry through the same housing. This connector system also enables loading with optional polarization keys and pegs that ensure the one-way mating of headers and housings. Molex KK Interconnection System comes with customizable KK headers that offer more polarization options and design configurations. These include headers with voided pins, customized pin lengths, kinked PC tails, and varying tin or gold plating options.

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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Type
Number of Positions
Pitch
Number of Rows
Mounting Style
Termination Style
Mounting Angle
Contact Gender
Contact Plating
Mating Post Length
Termination Post Length
Series
Tradename
Application
Wire Gauge
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Molex Headers & Wire Housings 2.54mm SRSW TH Hdr Tray 2.5SnLF 4Ckt
Datasheet
8.806In Stock
Min.: 1
Mult.: 1

Headers Breakaway 4 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 25.54 mm (1.006 in) 2.97 mm (0.117 in) 87891 KK Board-to-Board, Wire-to-Board, Signal - 55 C + 105 C Tray
Molex Headers & Wire Housings CRIMP TERM 18-22AWG
Datasheet
14.000In Stock
Min.: 7.000
Mult.: 7.000
Reel: 7.000

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 8818 KK 22 AWG to 18 AWG - 40 C + 105 C Reel
Molex Headers & Wire Housings KK TERM 22-30G Cut Strip of 100
Datasheet
Product Comments
5.800In Stock
Min.: 100
Mult.: 100

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Gold 4809 KK Wire-to-Board, Signal 30 AWG to 22 AWG - 40 C + 80 C Cut Tape
Molex Headers & Wire Housings KK 156 PCB Assy Top 04 Ckts Tin
Datasheet
2.995In Stock
Min.: 1
Mult.: 1

Headers Receptacle 4 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Tin 3.05 mm (0.12 in) 41815 KK - 40 C + 80 C
Molex Headers & Wire Housings 12CKT PCB TOP ENTRY
Datasheet
901In Stock
Min.: 1
Mult.: 1

Headers Receptacle 12 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Gold 41815 KK - 40 C + 80 C Tray
Molex Headers & Wire Housings 156 KK Term Hsg W/ Ramp Nylon 21Ckt
Datasheet
2.972In Stock
Min.: 1
Mult.: 1

Wire Housings 21 Position 3.96 mm (0.156 in) 1 Row 2139 KK Bulk
Molex Headers & Wire Housings KK 156 Crimp Housing 02 Ckt
Datasheet
15.507In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 2 Position 3.96 mm (0.156 in) 1 Row Cable Mount / Free Hanging Crimp Socket (Female) 41695 KK Wire-to-Board, Power Bulk
Molex Headers & Wire Housings KK 100 Housing Crimp Pol Ramp 7 Ckt
Datasheet
23.298In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 7 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Straight 7880 KK
Molex Headers & Wire Housings KK Hdr RA 3 Ckt 3.96mm Pitch 15um Au
Datasheet
1.524In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 11.33 mm (0.446 in) 2.54 mm (0.1 in) 171814 KK Wire-to-Board - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK Hdr RA 10 Ckt 2.54mm Pitch Sn
Datasheet
2.150In Stock
Min.: 1
Mult.: 1

Headers Locking 10 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 6.73 mm (0.265 in) 2.54 mm (0.1 in) 171857 KK Wire-to-Board - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK Hdr RA 8 Ckt 2.54mm Pitch 15um Au
Datasheet
2.850In Stock
Min.: 1
Mult.: 1

Headers Locking 8 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 6.73 mm (0.265 in) 2.54 mm (0.1 in) 171857 KK Wire-to-Board - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 07 Ckt 15Au T&R
Datasheet
1.987In Stock
Min.: 1
Mult.: 1
Reel: 2.700

Headers Locking 7 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 2.54 mm (0.1 in) 171857 KK Wire-to-Board - 40 C + 105 C Reel, Cut Tape
Molex Headers & Wire Housings VERT PCB HDR 9P TIN PLATING
Datasheet
1.640In Stock
Min.: 1
Mult.: 1

Headers Pin Strip 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 4030 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk

Molex Headers & Wire Housings 3 Circuit Friction Lock Solid Body KK100 Header Assembly
Datasheet
9.943In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.49 mm (0.295 in) 3.56 mm (0.14 in) 6373 KK - 40 C + 80 C
Molex Headers & Wire Housings 13 CKT R/A HEADER
Datasheet
3.965In Stock
Min.: 1
Mult.: 1

Headers Pin Strip 13 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 4094 KK Bulk
Molex Headers & Wire Housings KK 100 HDR FRLK RTAN 28 CKT TIN
Datasheet
1.676In Stock
Min.: 1
Mult.: 1

Headers Locking 28 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 6.71 mm (0.264 in) 3.58 mm (0.141 in) 7478 KK Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings 15C RA HEADER
Datasheet
757In Stock
Min.: 1
Mult.: 1

Headers Locking 15 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 6.71 mm (0.264 in) 3.58 mm (0.141 in) 7478 KK Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings 2.54mm KK HDR RA FRICLK .5AU 12CKT
Datasheet
2.734In Stock
Min.: 1
Mult.: 1

Headers Locking 12 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Gold 6.71 mm (0.264 in) 3.8 mm (0.15 in) 7395 KK Wire-to-Board, Signal - 40 C + 80 C Bulk
Molex Headers & Wire Housings PCB RIGHT ANGLE 9P
Datasheet
2.210In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Right Angle Pin (Male) Tin 3.35 mm (0.132 in) 4455 KK Tray
Molex Headers & Wire Housings 2.54MM BOARD CONN Top Entry 2 CKT
Datasheet
5.037In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 2 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Gold 3.35 mm (0.132 in) 4455 KK Board-to-Board, Signal - 40 C + 80 C Tray
Molex Headers & Wire Housings 2.54MM BOARD CONN Top Entry 9 CKT
Datasheet
1.137In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 9 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Gold 3.35 mm (0.132 in) 4455 KK Board-to-Board, Signal - 40 C + 80 C Tray

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert 05 Ckt Tin
Datasheet
4.908In Stock
Min.: 1
Mult.: 1

Headers Locking 5 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 6.6 mm (0.26 in) 9.27 mm (0.365 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C

Molex Headers & Wire Housings 13P F/L HEADER
Datasheet
1.596In Stock
2.850Expected 16/04/2026
Min.: 1
Mult.: 1

Headers Locking 13 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.49 mm (0.295 in) 3.56 mm (0.14 in) 6373 KK Bulk

Molex Headers & Wire Housings KK 100 Hdr FrLk Vert rLk Vert 03 Ckt Gold
Datasheet
3.675In Stock
Min.: 1
Mult.: 1

Headers Locking 3 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.75 mm (0.305 in) 2.29 mm (0.09 in) 6373 KK Wire-to-Board, Signal - 40 C + 80 C
Molex Headers & Wire Housings 2.54MM HDR VT 4P 295/120 SN
Datasheet
12.667In Stock
Min.: 1
Mult.: 1

Headers Breakaway 4 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.49 mm (0.295 in) 3.05 mm (0.12 in) 42375 KK Board-to-Board, Wire-to-Board, Signal - 40 C + 80 C Bulk