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 KK 100 PCB Assy Btm Assy Btm 05 Ckt Tin
Datasheet
2.520In Stock
6.300On Order
Min.: 1
Mult.: 1

Headers Socket Assembly 5 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Bottom Entry Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings KK 100 PCB Assy Btm Assy Btm 08 Ckt Tin
Datasheet
4.826In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 8 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Bottom Entry Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings KK 100 PCB Assy Btm Assy Btm 10 Ckt Tin
Datasheet
1.276In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 10 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Bottom Entry Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings 2.54MM 6P PCB CONN TOP ENTRY
Datasheet
1.835In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 6 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Socket (Female) Tin 3.3 mm (0.13 in) 4455 KK Board-to-Board, Signal - 40 C + 105 C Tray
Molex Headers & Wire Housings STD.KK CRIMP REC 247 Reel of 6000
Datasheet
Product Comments
161.000In Stock
105.000Expected 10/7/2026
Min.: 7.000
Mult.: 7.000
: 7.000

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 2478 KK Wire-to-Board, Wire-to-Wire, Power 24 AWG to 18 AWG - 40 C + 105 C Reel
Molex Headers & Wire Housings KK TERM 24-18G FEM Cut Strip of 100
Datasheet
Product Comments
67.600In Stock
Min.: 100
Mult.: 100

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 2478 KK Wire-to-Board, Wire-to-Wire, Power 24 AWG to 18 AWG - 40 C + 105 C Cut Tape
Molex Headers & Wire Housings MINI.KK CRIMP REC.
Datasheet
26.324In Stock
Min.: 1
Mult.: 1

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Gold 2759 KK Wire-to-Board, Power 28 AWG to 22 AWG - 40 C + 105 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy Flat t Bkwy 06 ckt 15 SAu
Datasheet
1.678In Stock
Min.: 1
Mult.: 1

Headers Breakaway 6 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 11.43 mm (0.45 in) 4.37 mm (0.172 in) 41661 KK Bulk
Molex Headers & Wire Housings 3CKT VERT HDR BREAKAWAY
Datasheet
2.128In Stock
Min.: 1
Mult.: 1

Headers Breakaway 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 11.43 mm (0.45 in) 4.37 mm (0.172 in) 41671 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy FrLk FrLk 10 Ckt 15 SGol
Datasheet
1.717In Stock
Min.: 1
Mult.: 1

Headers Locking 10 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 11.43 mm (0.45 in) 3.56 mm (0.14 in) 41791 KK Wire-to-Board, Power - 40 C + 80 C Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy FrLk FrLk 03 Ckt 30 SGol
Datasheet
1.872In Stock
Min.: 1
Mult.: 1

Headers Power 3 Position 3.96 mm (0.156 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 41791 KK Bulk
Molex Headers & Wire Housings KK 156 Hdr Assy FrLk RtAn 4Ckt 15 SGold
Datasheet
5.821In Stock
Min.: 1
Mult.: 1

41792 KK Bulk
Molex Headers & Wire Housings KK 156 PCB Assy Top 03 Ckts Tin
Datasheet
3.260In Stock
Min.: 1
Mult.: 1

Headers Socket Assembly 3 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 + 105 C
Molex Headers & Wire Housings KK 100 Hdr Bkw 4Ckt 2Ckt Voided
Datasheet
16.571In 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 6.09 mm (0.24 in) 3.18 mm (0.125 in) 42375 KK - 40 C + 105 C
Molex Headers & Wire Housings 3.96 TERM 18-20AWG REEL OF 1000
Datasheet
Product Comments
30.000In Stock
Min.: 1.000
Mult.: 1.000
: 1.000

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 45570 KK Wire-to-Board, Power 20 AWG to 18 AWG Reel
Molex Headers & Wire Housings 156 CRIMP 18-20
Datasheet
32.589In Stock
Min.: 1
Mult.: 1

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 45570 KK Wire-to-Board, Power 20 AWG Bulk
Molex Headers & Wire Housings 4 PIN HEADER WITH FR R WITH FRICTION LOCK
Datasheet
10.283In Stock
24.000Expected 10/15/2026
Min.: 1
Mult.: 1

Headers Locking 4 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Tin 7.34 mm (0.289 in) 4 mm (0.157 in) 47053 KK Bulk
Molex Headers & Wire Housings KK .100" HSG 04P
Datasheet
108.822In Stock
Min.: 1
Mult.: 1

Wire Housings Receptacle Housing 4 Position 2.54 mm (0.1 in) 1 Row Cable Mount / Free Hanging Crimp Socket (Female) 47054 KK Bulk
Molex Headers & Wire Housings 3 Circuits, Black Friction Ramp KK 254 Crimp Housing
Datasheet
38.271In Stock
Min.: 1
Mult.: 1

Headers 3 Position 2.54 mm (0.1 in) 1 Row Socket (Female) 2695 KK Wire-to-Board, Signal Bulk

Molex Headers & Wire Housings 8CKT VERT HDR
Datasheet
1.785In Stock
Min.: 1
Mult.: 1

Headers Shrouded 8 Position 2.54 mm (0.1 in) 1 Row Through Hole Solder Pin Straight Pin (Male) Gold 7.26 mm (0.286 in) 7.34 mm (0.289 in) 6373 KK Wire-to-Board, Signal - 40 C + 105 C
Molex Headers & Wire Housings CRIMP TERM 18-22AWG Reel of 7000
Datasheet
Product Comments
21.000In Stock
Min.: 7.000
Mult.: 7.000
: 7.000

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 8818 KK 22 AWG to 18 AWG - 40 C + 80 C Reel
Molex Headers & Wire Housings KK TERM 22-26G Reel of 7000
Datasheet
Product Comments
42.000In Stock
63.000Expected 9/17/2026
Min.: 7.000
Mult.: 7.000
: 7.000

Contacts Crimp Socket (Female) Tin 2578 KK Wire-to-Board, Power 26 AWG Reel
Molex Headers & Wire Housings KK TERM 22-26G Reel of 7000
Datasheet
Product Comments
49.000In Stock
Min.: 7.000
Mult.: 7.000
: 7.000

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 2578 KK Wire-to-Board, Power 26 AWG to 22 AWG - 40 C + 80 C Reel
Molex Headers & Wire Housings TERMINAL 22-26 BULK
Datasheet
Product Comments
8.257In Stock
15.800Expected 8/27/2026
Min.: 1
Mult.: 1

Contacts Crimp Socket (Female) Tin 2578 KK 26 AWG Bulk
Molex Headers & Wire Housings TERMINAL 22-26 REEL Cut Strip of 100
Datasheet
Product Comments
6.500In Stock
Min.: 100
Mult.: 100

Contacts Cable Mount / Free Hanging Crimp Socket (Female) Tin 7258 KK 26 AWG to 22 AWG - 40 C + 80 C Cut Tape