Headers & Wire Housings – Mouser Ireland

.hide-partial { max-height: none; } .show-more { display: none; }

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.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 2,423

Applied Filters:

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

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	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
Headers & Wire Housings KK 100 Hdr FrLk Vert 02 Ckt Gold 22-11-2028 Molex 1: €0.559 15,928In Stock	Mfr. Part No. 22-11-2028 Mouser Part No 538-22-11-2028	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 02 Ckt Gold Learn More about Molex kk	Datasheet	15,928In Stock	€0.559 €0.48 €0.439 €0.396 View €0.362 €0.305 €0.286 €0.273 €0.247	Min.: 1 Mult.: 1	Headers	Locking	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.49 mm (0.295 in)	3.56 mm (0.14 in)	6373	KK
Headers & Wire Housings KK 100 Hdr FrLk Vert 06 Ckt Gold 22-11-2066 Molex 1: €0.748 7,406In Stock	Mfr. Part No. 22-11-2066 Mouser Part No 538-22-11-2066	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 06 Ckt Gold Learn More about Molex kk	Datasheet	7,406In Stock	€0.748 €0.635 €0.634 €0.539 View €0.482 €0.452 €0.409 €0.365	Min.: 1 Mult.: 1	Headers	Locking	6 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	8.08 mm (0.318 in)	4.75 mm (0.187 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 16 Pos., 0.51 m Gold (Au) Pltg, Bag 22-12-2164 Molex 1: €2.98 1,129In Stock	Mfr. Part No. 22-12-2164 Mouser Part No 538-22-12-2164	Molex	Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 16 Pos., 0.51 m Gold (Au) Pltg, Bag Learn More about Molex kk	Datasheet	1,129In Stock	€2.98 €2.79 €2.76	Min.: 1 Mult.: 1	Headers	Locking	16 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
Headers & Wire Housings KK 254 Breakaway Header, Vert., 3 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4036 Molex 1: €0.292 60,354In Stock	Mfr. Part No. 22-28-4036 Mouser Part No 538-22-28-4036	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 3 Pos., 0.76 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	60,354In Stock	€0.292 €0.266 €0.264 €0.26 View €0.233 €0.214 €0.21 €0.194	Min.: 1 Mult.: 1	Headers	Breakaway	3 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	6.09 mm (0.24 in)	3.05 mm (0.12 in)	42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 10 Pos., Tin (Sn) Pltg, Mating Pin Lg. 7.49mm, Bag 22-28-4102 Molex 1: €0.611 5,261In Stock	Mfr. Part No. 22-28-4102 Mouser Part No 538-22-28-4102	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 10 Pos., Tin (Sn) Pltg, Mating Pin Lg. 7.49mm, Bag Learn More about Molex kk	Datasheet	5,261In Stock	€0.611 €0.528 €0.482 €0.435 View €0.397 €0.329 €0.309 €0.294 €0.261	Min.: 1 Mult.: 1	Headers	Breakaway	10 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
Headers & Wire Housings KK 254 Breakaway Header, Vert., 11 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4110 Molex 1: €0.404 9,113In Stock	Mfr. Part No. 22-28-4110 Mouser Part No 538-22-28-4110	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 11 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	9,113In Stock	€0.404 €0.368 €0.366 €0.34 View €0.323 €0.317 €0.31 €0.308 €0.295	Min.: 1 Mult.: 1	Headers	Breakaway	11 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	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 36 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4360 Molex 1: €0.903 5,976In Stock	Mfr. Part No. 22-28-4360 Mouser Part No 538-22-28-4360	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 36 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	5,976In Stock	€0.903 €0.807 €0.791 €0.73 View €0.727 €0.725	Min.: 1 Mult.: 1	Headers	Breakaway	36 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, R/A, 14 Pos., Tin (Sn) Pltg, Mating Pin Lg. 9.17mm, Bag 22-28-6140 Molex 1: €0.791 12,004In Stock	Mfr. Part No. 22-28-6140 Mouser Part No 538-22-28-6140	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A, 14 Pos., Tin (Sn) Pltg, Mating Pin Lg. 9.17mm, Bag Learn More about Molex kk	Datasheet	12,004In Stock	€0.791 €0.668 €0.642 €0.601 View €0.546 €0.534	Min.: 1 Mult.: 1	Headers	Breakaway	14 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin	9.17 mm (0.361 in)	3.05 mm (0.12 in)	42376	KK					Bulk
Headers & Wire Housings KK 100 Hdr Assy 16 Ckt Tin 22-30-3163 Molex 1: €0.808 3,310In Stock	Mfr. Part No. 22-30-3163 Mouser Part No 538-22-30-3163	Molex	Headers & Wire Housings KK 100 Hdr Assy 16 Ckt Tin	Datasheet	3,310In Stock	€0.808 €0.685 €0.657 €0.615 €0.395	Min.: 1 Mult.: 1	Headers	Breakaway	16 Position	2.54 mm (0.1 in)	1 Row	Kinked Pin	Solder Pin	Straight	Pin (Male)	Tin	10.29 mm (0.405 in)	3.43 mm (0.135 in)	42375	KK
Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Use With Trifurcon Terminals, 10 Pos., Natural 26-03-3101 Molex 1: €0.275 5,818In Stock	Mfr. Part No. 26-03-3101 Mouser Part No 538-26-03-3101	Molex	Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Use With Trifurcon Terminals, 10 Pos., Natural Learn More about Molex kk	Datasheet	5,818In Stock	€0.275 €0.26 €0.257 €0.254 View €0.252 €0.249	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	10 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				6442	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 12 Pos., 1.52 m Matte Tin (Sn) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. 26-48-1125 Molex 1: €0.851 4,262In Stock	Mfr. Part No. 26-48-1125 Mouser Part No 538-26-48-1125	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., Square Pin, w/ Friction Lock, 12 Pos., 1.52 m Matte Tin (Sn) Pltg, 4.37mm Tail Lg., 11.43mm Mating Pin Lg. Learn More about Molex kk	Datasheet	4,262In Stock	€0.851 €0.722 €0.703	Min.: 1 Mult.: 1	Headers	Breakaway	12 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			41671	KK	Board-to-Board, Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings 12P STRAIGHT HEADER 26-48-2125 Molex 1: €5.33 1,124In Stock	Mfr. Part No. 26-48-2125 Mouser Part No 538-26-48-2125	Molex	Headers & Wire Housings 12P STRAIGHT HEADER Learn More about Molex kk	Datasheet	1,124In Stock	€5.33 €4.85 €4.60 €4.49 View €4.27 €3.13 €2.76	Min.: 1 Mult.: 1	Headers	Breakaway	12 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
Headers & Wire Housings KK 156 Hdr Assy FrLk Assy FrLk 05 Ckt Tin 27-62-4059 Molex 1: €0.285 5,187In Stock	Mfr. Part No. 27-62-4059 Mouser Part No 538-27-62-4059	Molex	Headers & Wire Housings KK 156 Hdr Assy FrLk Assy FrLk 05 Ckt Tin Learn More about Molex kk	Datasheet	5,187In Stock	€0.285	Min.: 1 Mult.: 1	Headers	Locking	5 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	11.43 mm (0.45 in)	3.56 mm (0.14 in)	41791	KK
Headers & Wire Housings KK Cat Ear Crimp Terminal 5159, 28-22 AWG, Bag, Phosphor Bronze, Tin (Sn) Pltg 08-70-0049 Molex 1: €0.138 62,361In Stock	Mfr. Part No. 08-70-0049 Mouser Part No 538-08-70-0049	Molex	Headers & Wire Housings KK Cat Ear Crimp Terminal 5159, 28-22 AWG, Bag, Phosphor Bronze, Tin (Sn) Pltg	Datasheet	62,361In Stock	€0.138 €0.12 €0.114 €0.111 View €0.101 €0.084 €0.082 €0.08	Min.: 1 Mult.: 1	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			5159	KK		28 AWG to 22 AWG	- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK 396 PC Board Conn., Bottom Entry, w/ Ramp, Brass, 3.18mm Tail Lg., 0.38 m Gold (Au) Selective Pltg, 3 Pos. 09-48-3034 Molex 1: €0.791 3,547In Stock	Mfr. Part No. 09-48-3034 Mouser Part No 538-09-48-3034	Molex	Headers & Wire Housings KK 396 PC Board Conn., Bottom Entry, w/ Ramp, Brass, 3.18mm Tail Lg., 0.38 m Gold (Au) Selective Pltg, 3 Pos. Learn More about Molex kk	Datasheet	3,547In Stock	€0.791 €0.669 €0.668 €0.568 €0.545	Min.: 1 Mult.: 1	Headers	Receptacle	3 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin		Socket (Female)	Gold			41815	KK			- 40 C	+ 80 C	Tray
Headers & Wire Housings KK 3.96mm Crimp Housing, Friction Ramp, 3 Pos., Glow-Wire Capable 09-93-0300 Molex 1: €0.232 31,263In Stock	Mfr. Part No. 09-93-0300 Mouser Part No 538-09-93-0300	Molex	Headers & Wire Housings KK 3.96mm Crimp Housing, Friction Ramp, 3 Pos., Glow-Wire Capable Learn More about Molex kk	Datasheet	31,263In Stock	€0.232 €0.197 €0.164 €0.16	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	3 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp	Straight	Socket (Female)				3069	KK					Bulk
Headers & Wire Housings 5.08MM 2P VERT HDR W/POLAR BACKWL 10-08-5021 Molex 1: €0.43 14,964In Stock	Mfr. Part No. 10-08-5021 Mouser Part No 538-10-08-5021	Molex	Headers & Wire Housings 5.08MM 2P VERT HDR W/POLAR BACKWL Learn More about Molex kk	Datasheet	14,964In Stock	€0.43 €0.364 €0.339	Min.: 1 Mult.: 1	Headers	Shrouded	2 Position	5.08 mm (0.2 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			2599	KK					Bulk
Headers & Wire Housings 5.08MM 4P VERT HDR W/POLAR BACKWL 10-08-5041 Molex 1: €0.482 12,318In Stock	Mfr. Part No. 10-08-5041 Mouser Part No 538-10-08-5041	Molex	Headers & Wire Housings 5.08MM 4P VERT HDR W/POLAR BACKWL Learn More about Molex kk	Datasheet	12,318In Stock	€0.482 €0.423	Min.: 1 Mult.: 1	Headers	Shrouded	4 Position	5.08 mm (0.2 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			2599	KK					Tray
Headers & Wire Housings KK 396 RPC Vert. Header, 3.96mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 18.29mm Mating Pin Lg., 3.56mm Tail Lg., Bag, 4 Pos. 171813-0104 Molex 1: €0.619 6,959In Stock	Mfr. Part No. 171813-0104 Mouser Part No 538-171813-0104	Molex	Headers & Wire Housings KK 396 RPC Vert. Header, 3.96mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 18.29mm Mating Pin Lg., 3.56mm Tail Lg., Bag, 4 Pos. Learn More about Molex kk 396 rpc headers	Datasheet	6,959In Stock	€0.619 €0.537 €0.491 €0.387	Min.: 1 Mult.: 1	Headers	Locking	4 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	11.43 mm (0.45 in)	3.56 mm (0.14 in)	171813	KK			- 40 C	+ 105 C
Headers & Wire Housings KK 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, 0.38 m Gold (Au) Pltg, 7.44mm Mating Pin Lg., 2.34mm Tail Lg., T/R, 2 Pos. 171856-4002 Molex 1: €1.63 2,075In Stock	Mfr. Part No. 171856-4002 Mouser Part No 538-171856-4002	Molex	Headers & Wire Housings KK 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, 0.38 m Gold (Au) Pltg, 7.44mm Mating Pin Lg., 2.34mm Tail Lg., T/R, 2 Pos. Learn More about Molex kk 254 rpc headers	Datasheet	2,075In Stock	Cut Tape €1.63 €1.43 €1.37 €1.27 Reel €0.857 View €1.15 €1.06 €0.821 €0.809	Min.: 1 Mult.: 1 : 1,050	Headers	Locking	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.44 mm (0.293 in)	2.34 mm (0.092 in)	171856	KK	Wire-to-Board		- 40 C	+ 105 C	Reel, Cut Tape
Headers & Wire Housings KK 254 Crimp Housing, 9 Pos., Natural 22-01-2091 Molex 1: €0.189 19,901In Stock	Mfr. Part No. 22-01-2091 Mouser Part No 538-22-01-2091	Molex	Headers & Wire Housings KK 254 Crimp Housing, 9 Pos., Natural Learn More about Molex kk	Datasheet	19,901In Stock	€0.189 €0.157 €0.144 €0.135 €0.134	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	9 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2695	KK	Wire-to-Board, Signal				Bulk
Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp w/ Polarizing Ribs, 13 Pos., Natural 22-01-3137 Molex 1: €0.212 23,961In Stock 4,000Expected 17/12/2026	Mfr. Part No. 22-01-3137 Mouser Part No 538-22-01-3137	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp w/ Polarizing Ribs, 13 Pos., Natural Learn More about Molex kk	Datasheet	23,961In Stock 4,000Expected 17/12/2026	€0.212	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	13 Position	2.54 mm (0.1 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				2695	KK	Wire-to-Board, Signal				Bulk
Headers & Wire Housings KK 100 Hdr FrLk Vert 3CKT - 2P Voided 22-11-2037 Molex 1: €0.636 14,469In Stock	Mfr. Part No. 22-11-2037 Mouser Part No 538-22-11-2037	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 3CKT - 2P Voided Learn More about Molex kk	Datasheet	14,469In Stock	€0.636 €0.552 €0.505 €0.456 View €0.416 €0.345 €0.323 €0.308 €0.294	Min.: 1 Mult.: 1	Headers	Locking	3 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.49 mm (0.295 in)	3.56 mm (0.14 in)	6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C
Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 14 Pos., 0.51 m Gold (Au) Pltg, Bag 22-12-2144 Molex 1: €3.90 6,044In Stock	Mfr. Part No. 22-12-2144 Mouser Part No 538-22-12-2144	Molex	Headers & Wire Housings KK 254 Solid Header, R/A, w/ Friction Lock, 14 Pos., 0.51 m Gold (Au) Pltg, Bag Learn More about Molex kk	Datasheet	6,044In Stock	€3.90 €3.31 €3.01 €3.00 View €2.55 €2.45 €2.38 €2.29 €2.16	Min.: 1 Mult.: 1	Headers	Locking	14 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Gold			7478	KK	Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 8 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4080 Molex 1: €0.353 16,931In Stock	Mfr. Part No. 22-28-4080 Mouser Part No 538-22-28-4080	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 8 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	16,931In Stock	€0.353 €0.306 €0.274 €0.236 View €0.22 €0.185	Min.: 1 Mult.: 1	Headers	Breakaway	8 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			42375	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk