Headers & Wire Housings – Mouser Ireland

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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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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 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 7.44mm Mating Pin Lg., 2.34mm Tail Lg., T/R, 4 Pos. 171856-3004 Molex 1: €1.18 4,565In Stock	Mfr. Part No. 171856-3004 Mouser Part No 538-171856-3004	Molex	Headers & Wire Housings KK 254 RPC Vert. Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 7.44mm Mating Pin Lg., 2.34mm Tail Lg., T/R, 4 Pos. Learn More about Molex kk 254 rpc headers	Datasheet	4,565In Stock	Cut Tape €1.18 Reel €1.18 €1.16	Min.: 1 Mult.: 1 : 150	Headers	Locking	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	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, 8 Pos., Natural 22-01-2081 Molex 1: €0.224 26,262In Stock	Mfr. Part No. 22-01-2081 Mouser Part No 538-22-01-2081	Molex	Headers & Wire Housings KK 254 Crimp Housing, 8 Pos., Natural Learn More about Molex kk	Datasheet	26,262In Stock	€0.224 €0.206 €0.194 €0.189 View €0.182 €0.173 €0.169 €0.165	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	8 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 Wire-to-Board Header, Single Row, Vert., 5 Pos., PA Polyamide Nylon, Gold (Au) Pltg 22-10-2051 Molex 1: €0.843 3,738In Stock	Mfr. Part No. 22-10-2051 Mouser Part No 538-22-10-2051	Molex	Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 5 Pos., PA Polyamide Nylon, Gold (Au) Pltg Learn More about Molex kk	Datasheet	3,738In Stock	€0.843 €0.725 €0.721 €0.667 View €0.63 €0.614 €0.587	Min.: 1 Mult.: 1	Headers	Pin Strip	5 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold			4030	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 Breakaway Header, Vert., 12 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4123 Molex 1: €0.714 12,875In Stock	Mfr. Part No. 22-28-4123 Mouser Part No 538-22-28-4123	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 12 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	12,875In Stock	€0.714 €0.624 €0.614 €0.569	Min.: 1 Mult.: 1	Headers	Breakaway	12 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	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., 20 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4200 Molex 1: €0.989 8,977In Stock	Mfr. Part No. 22-28-4200 Mouser Part No 538-22-28-4200	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 20 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	8,977In Stock	€0.989 €0.84 €0.839 €0.714 View €0.713 €0.673 €0.636 €0.558	Min.: 1 Mult.: 1	Headers	Breakaway	20 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, Vert., 22 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag 22-28-4220 Molex 1: €1.02 2,456In Stock	Mfr. Part No. 22-28-4220 Mouser Part No 538-22-28-4220	Molex	Headers & Wire Housings KK 254 Breakaway Header, Vert., 22 Pos., Tin (Sn) Pltg, Mating Pin Lg. 6.09mm, Bag Learn More about Molex kk	Datasheet	2,456In Stock	€1.02 €1.01 €0.998 €0.929 View €0.839 €0.772 €0.692 €0.668	Min.: 1 Mult.: 1	Headers	Breakaway	22 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, R/A SMT Compatible, 6 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.2mm, Bag 22-28-8062 Molex 1: €0.774 31,519In Stock	Mfr. Part No. 22-28-8062 Mouser Part No 538-22-28-8062	Molex	Headers & Wire Housings KK 254 Breakaway Header, R/A SMT Compatible, 6 Pos., 0.38 m Gold (Au) Pltg, Mating Pin Lg. 6.2mm, Bag Learn More about Molex kk	Datasheet	31,519In Stock	€0.774 €0.654 €0.615 €0.555 View €0.495 €0.42 €0.392 €0.374 €0.335	Min.: 1 Mult.: 1	Headers	Breakaway	6 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Gold			42377	KK	Board-to-Board, Wire-to-Board, Signal		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 396 Breakaway Header, Vert., 3 Pos., 0.50 m Gold (Au) Selective Pltg, Pin Lg. 19.05mm (.750") 26-48-2031 Molex 1: €0.937 4,739In Stock	Mfr. Part No. 26-48-2031 Mouser Part No 538-26-48-2031	Molex	Headers & Wire Housings KK 396 Breakaway Header, Vert., 3 Pos., 0.50 m Gold (Au) Selective Pltg, Pin Lg. 19.05mm (.750") Learn More about Molex kk	Datasheet	4,739In Stock	€0.937 €0.795 €0.762 €0.714 View €0.648 €0.584 €0.532 €0.499 €0.488	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)	41661	KK	Wire-to-Board, Power		- 40 C	+ 80 C	Bulk
Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 4 Pos. 38-00-1334 Molex 1: €1.03 2,785In Stock	Mfr. Part No. 38-00-1334 Mouser Part No 538-38-00-1334	Molex	Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 4 Pos. Learn More about Molex kk	Datasheet	2,785In Stock	€1.03 €0.877 €0.618 €0.581 View €0.579 €0.544 €0.538 €0.536	Min.: 1 Mult.: 1	Headers	Socket Assembly	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Socket (Female)	Tin			4455	KK					Tray
Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 5 Pos. 38-00-1335 Molex 1: €1.03 3,284In Stock	Mfr. Part No. 38-00-1335 Mouser Part No 538-38-00-1335	Molex	Headers & Wire Housings KK 254 PC Board Conn., R/A, End-to-End Stackable, w/ Cat Ear Terminal, 2.54 m Tin (Sn) Pltg, 5 Pos. Learn More about Molex kk	Datasheet	3,284In Stock	€1.03 €0.886 €0.836 €0.679 View €0.629 €0.601 €0.551 €0.533 €0.524	Min.: 1 Mult.: 1	Headers	Socket Assembly	5 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Socket (Female)	Tin		3.3 mm (0.13 in)	4455	KK	Board-to-Board, Signal		- 40 C	+ 105 C	Tray
Headers & Wire Housings KK 100 Hdr Assy Bkw 02 Ckt 15 SGold 42375-2486 Molex 1: €0.181 25,092In Stock	Mfr. Part No. 42375-2486 Mouser Part No 538-42375-2486	Molex	Headers & Wire Housings KK 100 Hdr Assy Bkw 02 Ckt 15 SGold Learn More about Molex kk	Datasheet	25,092In Stock	€0.181 €0.151 €0.133 €0.116 View €0.102 €0.087	Min.: 1 Mult.: 1	Headers	Breakaway	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	5.89 mm (0.232 in)	3.89 mm (0.153 in)	42375	KK			- 40 C	+ 105 C
Headers & Wire Housings KK TERM 18-24G Cut Strip of 100 08-52-0071 (Cut Strip) Molex 100: €0.076 34,500In Stock	Mfr. Part No. 08-52-0071 (Cut Strip) Mouser Part No 538-08-52-0071-CT	Molex	Headers & Wire Housings KK TERM 18-24G Cut Strip of 100 Learn More about Molex kk	Datasheet	34,500In Stock	€0.076	Min.: 100 Mult.: 100	Contacts					Cable Mount / Free Hanging	Crimp		Socket (Female)	Tin			2478	KK	Wire-to-Board, Power	24 AWG to 18 AWG	- 40 C	+ 105 C	Cut Tape
Headers & Wire Housings KK 156 PCB Assy RtAn 07 Ckt Tin 09-48-2071 Molex 1: €1.14 2,311In Stock	Mfr. Part No. 09-48-2071 Mouser Part No 538-09-48-2071	Molex	Headers & Wire Housings KK 156 PCB Assy RtAn 07 Ckt Tin Learn More about Molex kk	Datasheet	2,311In Stock	€1.14 €0.972 €0.929 €0.869 View €0.789 €0.71 €0.63 €0.564 €0.542	Min.: 1 Mult.: 1	Headers	Socket Assembly	7 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Socket (Female)	Tin			41815	KK
Headers & Wire Housings KK 396 PC Board Conn., Top Entry, w/ Ramp, Brass, 3.05mm Tail Lg., 0.38 m Gold (Au) Selective Pltg, 3 Pos. 09-48-3036 Molex 1: €0.903 5,737In Stock	Mfr. Part No. 09-48-3036 Mouser Part No 538-09-48-3036	Molex	Headers & Wire Housings KK 396 PC Board Conn., Top Entry, w/ Ramp, Brass, 3.05mm Tail Lg., 0.38 m Gold (Au) Selective Pltg, 3 Pos. Learn More about Molex kk	Datasheet	5,737In Stock	€0.903 €0.767 €0.749 €0.529 View €0.497 €0.493	Min.: 1 Mult.: 1	Headers	Receptacle	3 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Socket (Female)	Gold		3.05 mm (0.12 in)	41815	KK			- 40 C	+ 80 C	Tray
Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Friction Ramp, 8 Pos., Natural 09-50-8081 Molex 1: €0.456 7,962In Stock	Mfr. Part No. 09-50-8081 Mouser Part No 538-09-50-8081	Molex	Headers & Wire Housings KK 3.96mm Crimp Terminal Housing, Friction Ramp, 8 Pos., Natural Learn More about Molex kk	Datasheet	7,962In Stock	€0.456 €0.417 €0.402 €0.392 View €0.323 €0.286 €0.267	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	8 Position	3.96 mm (0.156 in)	1 Row	Cable Mount / Free Hanging	Crimp		Socket (Female)				41695	KK	Wire-to-Board, Power				Bulk
Headers & Wire Housings SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 8 Pos. 09-65-2088 Molex 1: €0.593 9,908In Stock	Mfr. Part No. 09-65-2088 Mouser Part No 538-09-65-2088	Molex	Headers & Wire Housings SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 8 Pos.	Datasheet	9,908In Stock	€0.593 €0.541 €0.536 €0.487 View €0.464 €0.436 €0.426 €0.395 €0.382	Min.: 1 Mult.: 1	Headers	Receptacle	8 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin			5273	KK, SPOX			- 40 C	+ 105 C	Bulk
Headers & Wire Housings SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 9 Pos. 09-65-2098 Molex 1: €1.29 3,227In Stock	Mfr. Part No. 09-65-2098 Mouser Part No 538-09-65-2098	Molex	Headers & Wire Housings SPOX and KK 396 Wire-to-Board Header, Vert., w/ Friction Lock, 9 Pos. Learn More about Molex kk	Datasheet	3,227In Stock	€1.29 €1.09 €1.08 €0.937 View €0.92 €0.829 €0.752 €0.644	Min.: 1 Mult.: 1	Headers	Receptacle	9 Position	3.96 mm (0.156 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	10.65 mm (0.419 in)	3.6 mm (0.142 in)	5273	KK, SPOX			- 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, 3 Pos. 171856-4003 Molex 1: €1.06 2,224In Stock	Mfr. Part No. 171856-4003 Mouser Part No 538-171856-4003	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, 3 Pos. Learn More about Molex kk 254 rpc headers	Datasheet	2,224In Stock	Cut Tape €1.06 €1.04 Reel €1.04	Min.: 1 Mult.: 1 : 1,050	Headers	Locking	3 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 RPC R/A Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 6.73mm Mating Pin Lg., 2.54mm Tail Lg., Bag, 6 Pos. 171857-0006 Molex 1: €0.439 11,919In Stock	Mfr. Part No. 171857-0006 Mouser Part No 538-171857-0006	Molex	Headers & Wire Housings KK 254 RPC R/A Header, 2.54mm Pit., Friction Lock, Reflowed Matte Tin (Sn) Pltg, 6.73mm Mating Pin Lg., 2.54mm Tail Lg., Bag, 6 Pos. Learn More about Molex kk 254 rpc headers	Datasheet	11,919In Stock	€0.439 €0.373 €0.358 €0.317 View €0.282 €0.272	Min.: 1 Mult.: 1	Headers	Locking	6 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
Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 11 Circuit 22-01-2117 Molex 1: €0.284 15,428In Stock	Mfr. Part No. 22-01-2117 Mouser Part No 538-22-01-2117	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 11 Circuit Learn More about Molex kk	Datasheet	15,428In Stock	€0.284 €0.253 €0.239 €0.229 View €0.187 €0.164	Min.: 1 Mult.: 1	Wire Housings		11 Position	2.54 mm (0.1 in)	1 Row								2695	KK	Wire-to-Board, Signal				Bulk
Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 13 Pos., Natural 22-01-2137 Molex 1: €0.267 15,635In Stock	Mfr. Part No. 22-01-2137 Mouser Part No 538-22-01-2137	Molex	Headers & Wire Housings KK 254 Crimp Housing, Friction Ramp, 13 Pos., Natural Learn More about Molex kk	Datasheet	15,635In Stock	€0.267	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 254 Crimp Housing, 16 Pos., Natural 22-01-2161 Molex 1: €0.301 9,390In Stock	Mfr. Part No. 22-01-2161 Mouser Part No 538-22-01-2161	Molex	Headers & Wire Housings KK 254 Crimp Housing, 16 Pos., Natural Learn More about Molex kk	Datasheet	9,390In Stock	€0.301 €0.255 €0.24 €0.225 €0.195	Min.: 1 Mult.: 1	Wire Housings	Receptacle Housing	16 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 Wire-to-Board Header, Single Row, Vert., 8 Pos., PA Polyamide Nylon, Tin (Sn) Pltg 22-03-2081 Molex 1: €0.464 21,845In Stock	Mfr. Part No. 22-03-2081 Mouser Part No 538-22-03-2081	Molex	Headers & Wire Housings KK 254 Wire-to-Board Header, Single Row, Vert., 8 Pos., PA Polyamide Nylon, Tin (Sn) Pltg Learn More about Molex kk	Datasheet	21,845In Stock	€0.464 €0.402 €0.397 €0.374	Min.: 1 Mult.: 1	Headers	Pin Strip	8 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
Headers & Wire Housings KK 100 Hdr FrLk Vert4-positions: 1,3 w/ contacts; 2,4 void 22-04-5048 Molex 1: €0.378 11,370In Stock	Mfr. Part No. 22-04-5048 Mouser Part No 538-22-04-5048	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert4-positions: 1,3 w/ contacts; 2,4 void Learn More about Molex kk	Datasheet	11,370In Stock	€0.378 €0.32 €0.281 €0.249 View €0.223 €0.182 €0.171 €0.167 €0.151	Min.: 1 Mult.: 1	Headers	Locking	4 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Tin	7.49 mm (0.295 in)	3.56 mm (0.14 in)	6373	KK			- 40 C	+ 80 C
Headers & Wire Housings KK 100 Hdr FrLk Vert 02 Ckt Gold 22-11-2026 Molex 1: €0.284 17,986In Stock	Mfr. Part No. 22-11-2026 Mouser Part No 538-22-11-2026	Molex	Headers & Wire Housings KK 100 Hdr FrLk Vert 02 Ckt Gold Learn More about Molex kk	Datasheet	17,986In Stock	€0.284 €0.239 €0.204 €0.181 View €0.16 €0.152 €0.135	Min.: 1 Mult.: 1	Headers	Locking	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold			6373	KK	Wire-to-Board, Signal		- 40 C	+ 80 C