Headers & Wire Housings – Mouser Slovakia

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KK 254 RPC Headers

Molex KK 254 Reflow Process Compatible (RPC) Connector System supports a lead-free solder process and delivers up to 5A and 250V per circuit in a 2.54mm pitch package. KK 254 headers are designed to support RoHS lead-free initiatives. Designed with a nylon housing, the wire-to-board system can withstand temperatures up to +260°C. Molex KK 254 series connectors are ideal for use in industries such as automotive, medical, and consumer.

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RoHS Compliant

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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	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Headers & Wire Housings KK Hdr RA 2 Ckt 2.54mm Pitch Sn 171857-0002 Molex 1: 0,284 € 2.489In Stock 34.200Expected 12/10/2026	Mfr. Part No. 171857-0002 Mouser Part No 538-171857-0002	Molex	Headers & Wire Housings KK Hdr RA 2 Ckt 2.54mm Pitch Sn Learn More about Molex kk 254 rpc headers	Datasheet	2.489In Stock 34.200Expected 12/10/2026	0,284 € 0,243 € 0,237 € 0,202 € View 0,179 € 0,163 € 0,153 € 0,144 € 0,137 €	Min.: 1 Mult.: 1	Headers	Locking	2 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 Hdr RA 9 Ckt 2.54mm Pitch Sn 171857-0009 Molex 1: 0,783 € 250In Stock 8.550Expected 2/4/2027	Mfr. Part No. 171857-0009 Mouser Part No 538-171857-0009	Molex	Headers & Wire Housings KK Hdr RA 9 Ckt 2.54mm Pitch Sn Learn More about Molex kk 254 rpc headers	Datasheet	250In Stock 8.550Expected 2/4/2027	0,783 € 0,675 € 0,617 € 0,557 € View 0,519 € 0,44 € 0,425 €	Min.: 1 Mult.: 1	Headers	Locking	9 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 Hdr RA 4 Ckt 2.54mm Pitch 15um Au 171857-1004 Molex 1: 1,41 € 1.116In Stock	Mfr. Part No. 171857-1004 Mouser Part No 538-171857-1004	Molex	Headers & Wire Housings KK Hdr RA 4 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	1.116In Stock	1,41 € 1,25 € 1,23 € 1,13 € View 1,08 € 1,01 € 0,937 € 0,886 € 0,876 €	Min.: 1 Mult.: 1	Headers	Locking	4 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
Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 03 Ckt Tin T&R 171857-3003 Molex 1: 0,542 € 3.870In Stock	Mfr. Part No. 171857-3003 Mouser Part No 538-171857-3003	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 03 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	3.870In Stock	Cut Tape 0,542 € 0,458 € 0,389 € 0,333 € Reel 0,314 € View 0,314 € 0,305 € 0,302 €	Min.: 1 Mult.: 1 : 3.300	Headers	Locking	3 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	Reel, Cut Tape
Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 06 Ckt Tin T&R 171857-3006 Molex 1: 0,98 € 1.220In Stock	Mfr. Part No. 171857-3006 Mouser Part No 538-171857-3006	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 06 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	1.220In Stock	Cut Tape 0,98 € 0,869 € 0,748 € 0,708 € View Reel 0,411 € 0,648 € 0,617 € 0,411 €	Min.: 1 Mult.: 1 : 2.700	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	Reel, Cut Tape
Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 04 Ckt 15Au T&R 171857-4004 Molex 1: 1,16 € 1.466In Stock	Mfr. Part No. 171857-4004 Mouser Part No 538-171857-4004	Molex	Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 04 Ckt 15Au T&R Learn More about Molex kk 254 rpc headers	Datasheet	1.466In Stock	Cut Tape 1,16 € 0,98 € 0,946 € 0,886 € View Reel 0,605 € 0,693 € 0,645 € 0,632 € 0,605 €	Min.: 1 Mult.: 1 : 3.300	Headers	Locking	4 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	Reel, Cut Tape
Headers & Wire Housings KK Hdr Vrt 11 Ckt 2.54mm Pitch Sn 171856-0011 Molex 1: 0,80 € 767In Stock	Mfr. Part No. 171856-0011 Mouser Part No 538-171856-0011	Molex	Headers & Wire Housings KK Hdr Vrt 11 Ckt 2.54mm Pitch Sn Learn More about Molex kk 254 rpc headers	Datasheet	767In Stock	0,80 € 0,673 € 0,647 € 0,605 € View 0,55 € 0,52 €	Min.: 1 Mult.: 1	Headers	Locking	11 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	Bulk
Headers & Wire Housings KK Hdr Vrt 12 Ckt 2.54mm Pitch 15um Au 171856-1012 Molex 1: 2,26 € 197In Stock	Mfr. Part No. 171856-1012 Mouser Part No 538-171856-1012	Molex	Headers & Wire Housings KK Hdr Vrt 12 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	197In Stock	2,26 € 1,98 € 1,89 € 1,76 € View 1,60 € 1,47 € 1,28 € 1,20 € 1,16 €	Min.: 1 Mult.: 1	Headers	Locking	12 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	Bulk
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 10 Ckt Tin T&R 171856-3010 Molex 1: 1,46 € 376In Stock	Mfr. Part No. 171856-3010 Mouser Part No 538-171856-3010	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 10 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	376In Stock	Cut Tape 1,46 € 1,38 € Reel 1,38 €	Min.: 1 Mult.: 1 : 750	Headers	Locking	10 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 RPC 100 Hdr FrLk Vert10 Ckt 15Au T&R 171856-4010 Molex 1: 2,49 € 204In Stock	Mfr. Part No. 171856-4010 Mouser Part No 538-171856-4010	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert10 Ckt 15Au T&R Learn More about Molex kk 254 rpc headers	Datasheet	204In Stock	Cut Tape 2,49 € 2,26 € 2,14 € 1,99 € Reel 1,50 € View 1,75 € 1,69 € 1,40 €	Min.: 1 Mult.: 1 : 750	Headers	Locking	10 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 Hdr RA 9 Ckt 2.54mm Pitch 15um Au 171857-1009 Molex 1: 2,19 € 141In Stock	Mfr. Part No. 171857-1009 Mouser Part No 538-171857-1009	Molex	Headers & Wire Housings KK Hdr RA 9 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	141In Stock	2,19 € 1,91 € 1,64 € 1,35 € 1,14 €	Min.: 1 Mult.: 1	Headers	Locking	9 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
Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 09 Ckt Tin T&R 171857-3009 Molex 1: 1,01 € 590In Stock 6.300Expected 11/26/2026	Mfr. Part No. 171857-3009 Mouser Part No 538-171857-3009	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk R/A 09 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	590In Stock 6.300Expected 11/26/2026	Cut Tape 1,01 € 0,854 € 0,82 € 0,771 € Reel 0,771 €	Min.: 1 Mult.: 1 : 2.100	Headers	Locking	9 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Right Angle	Pin (Male)	Tin		2.54 mm (0.1 in)	171857	KK	Wire-to-Board	- 40 C	+ 105 C	Reel, Cut Tape
Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 05 Ckt 15Au T&R 171857-4005 Molex 1: 1,49 € 688In Stock	Mfr. Part No. 171857-4005 Mouser Part No 538-171857-4005	Molex	Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 05 Ckt 15Au T&R Learn More about Molex kk 254 rpc headers	Datasheet	688In Stock	Cut Tape 1,49 € 1,30 € 1,24 € 1,16 € 1,15 € Reel 1,15 €	Min.: 1 Mult.: 1 : 3.300	Headers	Locking	5 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
Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 11 Ckt 15Au T&R 171857-4011 Molex 1: 2,91 € 9In Stock	Mfr. Part No. 171857-4011 Mouser Part No 538-171857-4011	Molex	Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 11 Ckt 15Au T&R Learn More about Molex kk 254 rpc headers	Datasheet	9In Stock	Cut Tape 2,91 € 2,47 € 2,10 € 1,98 € Reel 1,98 €	Min.: 1 Mult.: 1 : 2.100	Headers	Locking	11 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
Headers & Wire Housings KK Hdr Vrt 11 Ckt 2.54mm Pitch 15um Au 171856-1011 Molex 1: 1,64 € 425In Stock Factory Special Order	Mfr. Part No. 171856-1011 Mouser Part No 538-171856-1011 Factory Special Order	Molex	Headers & Wire Housings KK Hdr Vrt 11 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	425In Stock	1,64 € 1,44 € 1,38 € 1,28 € View 1,16 € 1,08 € 0,937 € 0,903 €	Min.: 1 Mult.: 1	Headers	Locking	11 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	Bulk
Headers & Wire Housings KK Hdr RA 7 Ckt 2.54mm Pitch 15um Au 171857-1007 Molex 1: 1,71 € 12In Stock Factory Special Order	Mfr. Part No. 171857-1007 Mouser Part No 538-171857-1007 Factory Special Order	Molex	Headers & Wire Housings KK Hdr RA 7 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	12In Stock	1,71 € 1,50 € View 1,43 € 1,33 € 1,21 € 1,11 € 0,972 € 0,894 € 0,86 €	Min.: 1 Mult.: 1	Headers	Locking	7 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
Headers & Wire Housings KK Hdr Vrt 2 Ckt 2.54mm Pitch 15um Au 171856-1002 Molex 1: 0,387 € 31.604Expected 12/10/2026	Mfr. Part No. 171856-1002 Mouser Part No 538-171856-1002	Molex	Headers & Wire Housings KK Hdr Vrt 2 Ckt 2.54mm Pitch 15um Au Learn More about Molex kk 254 rpc headers	Datasheet	31.604Expected 12/10/2026	0,387 € 0,309 € 0,289 € 0,264 € View 0,25 € 0,239 €	Min.: 1 Mult.: 1	Headers	Locking	2 Position	2.54 mm (0.1 in)	1 Row	Through Hole	Solder Pin	Straight	Pin (Male)	Gold	7.44 mm (0.293 in)	2.34 mm (0.092 in)	171856	KK	Wire-to-Board	- 40 C	+ 105 C	Bulk
Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 02 Ckt 15Au T&R 171857-4002 Molex 1: 1,08 € 11.314On Order	Mfr. Part No. 171857-4002 Mouser Part No 538-171857-4002	Molex	Headers & Wire Housings KK RPC 254 Hdr FrLk R/A 02 Ckt 15Au T&R Learn More about Molex kk 254 rpc headers	Datasheet	11.314On Order On Order Ship Dates Mfr. No: 171857-4002 Stock: 0 On Order: 1.414 Expected 11/19/2026 9.900 Expected 12/3/2026 Factory Lead Time: 25 Weeks	Cut Tape 1,08 € Reel 1,08 €	Min.: 1 Mult.: 1 : 3.300	Headers	Locking	2 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	Reel, Cut Tape
Headers & Wire Housings KK 156 PCB RtAn 12Ckt Tin Molex 09-48-1123 09-48-1123 Molex 1: 2,93 € 924Expected 4/8/2027	Mfr. Part No. 09-48-1123 Mouser Part No 538-09-48-1123	Molex	Headers & Wire Housings KK 156 PCB RtAn 12Ckt Tin	Datasheet	924Expected 4/8/2027	2,93 € 2,67 € 2,53 € 2,35 € View 2,06 € 1,79 €	Min.: 1 Mult.: 1	Headers	Socket Assembly	12 Position	3.96 mm (0.156 in)	1 Row	Board Lock	Solder Pin	Right Angle	Socket (Female)	Tin		3.68 mm (0.145 in)	171856	KK
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 12 Ckt Tin T&R 171856-3012 Molex 1: 1,52 € 1In Stock	Mfr. Part No. 171856-3012 Mouser Part No 538-171856-3012	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 12 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	1In Stock	Cut Tape 1,52 € Reel 1,52 €	Min.: 1 Mult.: 1 : 750	Headers	Locking	12 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 Hdr Vrt 12 Ckt 2.54mm Pitch Sn 171856-0012 Molex 8.550: 0,554 € Non-Stocked Lead-Time 27 Weeks	Mfr. Part No. 171856-0012 Mouser Part No 538-171856-0012	Molex	Headers & Wire Housings KK Hdr Vrt 12 Ckt 2.54mm Pitch Sn Learn More about Molex kk 254 rpc headers	Datasheet	Non-Stocked Lead-Time 27 Weeks	0,554 €	Min.: 8.550 Mult.: 2.850	Headers	Locking	12 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	Bulk
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 04 Ckt Tin 171856-0104 Molex 22.800: 0,205 € Non-Stocked	Mfr. Part No. 171856-0104 Mouser Part No 538-171856-0104	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 04 Ckt Tin	Datasheet	Non-Stocked	0,205 €	Min.: 22.800 Mult.: 11.400	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)	171856	KK	Wire-to-Board, Wire-to-Wire, Power, Signal	- 40 C	+ 105 C
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 09 Ckt Tin 171856-0109 Molex 8.550: 0,525 € Non-Stocked	Mfr. Part No. 171856-0109 Mouser Part No 538-171856-0109	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 09 Ckt Tin	Datasheet	Non-Stocked	0,525 €	Min.: 8.550 Mult.: 2.850	Headers	Locking	9 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)	171856	KK	Wire-to-Board, Wire-to-Wire, Power, Signal
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 05 Ckt 30Au 171856-2005 Molex 5.700: 0,623 € Non-Stocked Lead-Time 15 Weeks	Mfr. Part No. 171856-2005 Mouser Part No 538-171856-2005	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 05 Ckt 30Au	Datasheet	Non-Stocked Lead-Time 15 Weeks	0,623 €	Min.: 5.700 Mult.: 5.700			5 Position	2.54 mm (0.1 in)	1 Row		Solder Pin	Straight		Gold			171856	KK
Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 06 Ckt Tin T&R 171856-3006 Molex 1: 1,11 € N/A	Mfr. Part No. 171856-3006 Mouser Part No 538-171856-3006	Molex	Headers & Wire Housings KK RPC 100 Hdr FrLk Vert 06 Ckt Tin T&R Learn More about Molex kk 254 rpc headers	Datasheet	N/A	Cut Tape 1,11 € Reel 1,11 €	Min.: 1 Mult.: 1 : 1.050	Headers	Locking	6 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

KK 254 RPC Headers

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