Harwin Gecko - 1.25mm High Reliability Connectors

Gecko is the award-winning new high-reliability, high-performance connector from Harwin that is small, withstands extreme temperatures and is unshockable.

Pin spacing of 1.25mm
Up to 50 contacts per connector
35% space saving over other high-performance connectors
2.8A per contact in isolation, 2A per contact simultaneously
Cable connectors are available as pre-crimped assemblies or as pre-crimped cables or simply as loose contacts

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Product Description

Harwin's Gecko (G125 series) connectors provide a low-profile, dual-row cable-to-board and board-to-board interconnect solution, ideally suited for stacking and cable mating in areas where PCB real estate is at a premium.

With space and weight a consideration for many high-reliability applications, G125 connectors are designed to offer high performance in a miniature package.

Tested and proven to allow high performance in extreme conditions, the G125 family can operate within a wide temperature range (-65°C / +150°C) and under extreme vibration (Z axis 100g 6ms). This high performance is made possible by Harwin's four-finger patented (pending) Copper Alloy Contact.

Award winner

Harwin's Gecko range is the winner of the Elektra Passive and Electromechanical Product of the Year 2013.

Housing features

The keyway is polarised, the No 1 position is clearly marked for easy cable identification and the rear wall accepts potting material to reduce cable strain.

Typical applications

Commercial avionics, Medical electronics, Robotics, Military, UAVs, Oil and Gas industries.

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Manufacturer Part No	Order Code	Manufacturer / Description	Availability	Price For	Price	Quantity	Product Range	Contact Gender	Contact Termination Type	For Use With	Wire Size AWG Max	Wire Size AWG Min	Current Rating	Contact Material	Contact Plating
G125-0010005	2408688 Data Sheet + RoHS Date/Lot Code	Contact, Gecko-SL G125, Socket, Crimp, Gecko G125 Series Housing Connectors, 26 AWG, 26 AWG HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times 16,754 more will be available week commencing 07/06/26 21,600 more will be available week commencing 21/06/26 8,400 more will be available week commencing 28/06/26 7,200 more will be available week commencing 12/07/26 84,200 more will be available week commencing 19/07/26 More stock available week commencing 27/07/26 Contact me when back in stock	Each	1+ £1.28 £1.54 10+ £1.00 £1.20 100+ £0.808 £0.97 500+ £0.721 £0.87 1000+ £0.686 £0.82 2500+ £0.644 £0.77 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko-SL G125	Socket	Crimp	Gecko G125 Series Housing Connectors	26AWG	26AWG	2.8A	Beryllium Copper	Gold Plated Contacts
G125-0020005	2408689 Data Sheet + RoHS	Contact, Gecko-SL G125, Socket, Crimp, Gecko G125 Series Housing Connectors, 28 AWG, 32 AWG HARWIN You previously purchased this product. View in Order History	17,888 in stock + Check Stock & Lead Times 17,888 in stock for next day delivery (UK stock) 12,600 more will be available week commencing 29/04/26 15,600 more will be available week commencing 14/06/26 8,400 more will be available week commencing 05/07/26 More stock available week commencing 06/07/26	Each	1+ £1.28 £1.54 10+ £1.00 £1.20 100+ £0.808 £0.97 500+ £0.721 £0.87 1000+ £0.686 £0.82 2500+ £0.644 £0.77 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko-SL G125	Socket	Crimp	Gecko G125 Series Housing Connectors	28AWG	32AWG	2.8A	Beryllium Copper	Gold Plated Contacts
G125-1020005	2408691 Data Sheet + RoHS Date/Lot Code	Contact, Gecko-SL G125, Pin, Crimp, Gecko G125 Series Housing Connectors, 28 AWG, 32 AWG HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times 600 more will be available week commencing 10/05/26 700 more will be available week commencing 24/05/26 2,100 more will be available week commencing 07/06/26 More stock available week commencing 08/06/26 Contact me when back in stock	Each	1+ £1.00 £1.20 10+ £0.798 £0.96 100+ £0.63 £0.76 500+ £0.563 £0.68 1000+ £0.536 £0.64 2500+ £0.502 £0.60 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko-SL G125	Pin	Crimp	Gecko G125 Series Housing Connectors	28AWG	32AWG	2.8A	Brass	Gold Plated Contacts
G125-2041296L0	2408692 Data Sheet + RoHS Date/Lot Code	Connector Housing, Black / Green, G125, Receptacle, 12 Ways, 1.25 mm, G125 Series Contacts HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times 673 more will be available week commencing 07/06/26 800 more will be available week commencing 21/06/26 More stock available week commencing 22/06/26 Contact me when back in stock	Each	1+ £2.18 £2.62 10+ £1.64 £1.97 100+ £1.40 £1.68 250+ £1.32 £1.58 500+ £1.24 £1.49 1000+ £1.18 £1.42 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	G125	-	-	G125 Series Contacts	-	-	-	-	-
G125-2041696L0	2408693 + RoHS Date/Lot Code	Connector Housing, Black / Green, G125, Receptacle, 16 Ways, 1.25 mm, G125 Series Contacts HARWIN You previously purchased this product. View in Order History	934 in stock + Check Stock & Lead Times 934 in stock for next day delivery (UK stock) 290 more will be available week commencing 29/04/26 More stock available week commencing 08/06/26	Each	1+ £2.37 £2.84 10+ £1.79 £2.15 100+ £1.51 £1.81 250+ £1.42 £1.70 500+ £1.35 £1.62 1000+ £1.29 £1.55 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	G125	-	-	G125 Series Contacts	-	-	-	-	-
G125-2042696L0	2408695 + RoHS Date/Lot Code	Connector Housing, Black / Green, G125, Receptacle, 26 Ways, 1.25 mm, G125 Series Contacts HARWIN You previously purchased this product. View in Order History	169 in stock + Check Stock & Lead Times 169 in stock for next day delivery (UK stock) 240 more will be available week commencing 07/06/26 More stock available week commencing 08/06/26	Each	1+ £2.71 £3.25 10+ £2.04 £2.45 100+ £1.74 £2.09 250+ £1.63 £1.96 500+ £1.55 £1.86 1000+ £1.48 £1.78 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	G125	-	-	G125 Series Contacts	-	-	-	-	-
G125-3042096L4	2408699 + RoHS Date/Lot Code	Connector Housing, G125, Receptacle, 20 Ways, 1.25 mm, G125 Series Contacts HARWIN You previously purchased this product. View in Order History	34 in stock + Check Stock & Lead Times 34 in stock for next day delivery (UK stock) More stock available week commencing 15/06/26	Each	1+ £4.08 £4.90 10+ £3.08 £3.70 100+ £2.75 £3.30 250+ £2.49 £2.99 500+ £2.35 £2.82 1000+ £2.25 £2.70 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	G125	-	-	G125 Series Contacts	-	-	-	-	-
G125-3042696L4	2408700 + RoHS Date/Lot Code	Connector Housing, Black / Green, G125, Receptacle, 26 Ways, 1.25 mm, G125 Series Contacts HARWIN You previously purchased this product. View in Order History	73 in stock + Check Stock & Lead Times 73 in stock for next day delivery (UK stock) More stock available week commencing 15/06/26	Each	1+ £3.93 £4.72 10+ £3.00 £3.60 100+ £2.55 £3.06 250+ £2.39 £2.87 500+ £2.27 £2.72 1000+ £2.17 £2.60 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	G125	-	-	G125 Series Contacts	-	-	-	-	-
G125-FS11205L0R	2408701 + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 12 Contacts, Surface Mount HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 99 days	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408701 2408710 in Cut Tape Non-Cancellable / Non Returnable	400+ £5.50 £6.60	Restricted Item Minimum order of 400 items Multiples of 400 only Please enter a valid quantity Add Min: 400 Mult: 400	Gecko G125	-	Surface Mount	-	-	-	-	Copper	Gold Plated Contacts
G125-FS12005L0R	2408704 + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 20 Contacts, Surface Mount HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 06/07/26 Contact me when back in stock	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408704 2408712 in Cut Tape	400+ £9.53 £11.44 1200+ £9.08 £10.90	Restricted Item Minimum order of 400 items Multiples of 400 only Please enter a valid quantity Add Min: 400 Mult: 400	Gecko G125	-	Surface Mount	-	-	-	-	Copper	Gold Plated Contacts
G125-FV11605L0R	2408707 Data Sheet + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 16 Contacts, Through Hole Mount HARWIN You previously purchased this product. View in Order History	250 in stock + Check Stock & Lead Times 250 in stock for next day delivery (UK stock) More stock available week commencing 06/07/26	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408707 2408716 in Cut Tape	250+ £6.74 £8.09	Restricted Item Minimum order of 250 items Multiples of 250 only Please enter a valid quantity Add Min: 250 Mult: 250	Gecko G125	-	Through Hole	-	-	-	-	Copper	Gold Plated Contacts
G125-FV12005L0R	2408708 Data Sheet + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 20 Contacts, Through Hole Mount HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 99 days	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408708 2408717 in Cut Tape Non-Cancellable / Non Returnable	1000+ £7.72 £9.26	Restricted Item Minimum order of 1000 items Multiples of 1000 only Please enter a valid quantity Add Min: 1000 Mult: 1000	Gecko G125	-	Through Hole	-	-	-	-	Copper	Gold Plated Contacts
G125-FV12605L0R	2408709 Data Sheet + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 26 Contacts, Through Hole Mount HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 99 days	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408709 2408718 in Cut Tape Non-Cancellable / Non Returnable	250+ £10.40 £12.48	Restricted Item Minimum order of 250 items Multiples of 250 only Please enter a valid quantity Add Min: 250 Mult: 250	Gecko G125	-	Through Hole	-	-	-	-	Copper	Gold Plated Contacts
G125-FS11205L0P	2408710 + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 12 Contacts, Surface Mount HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 106 days	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408710 2408701 in Full Reel Non-Cancellable / Non Returnable	100+ £6.29 £7.55	Restricted Item Minimum order of 100 items Multiples of 100 only Please enter a valid quantity Add Min: 100 Mult: 100	Gecko G125	-	Surface Mount	-	-	-	-	Copper	Gold Plated Contacts
G125-FV11605L0P	2408716 Data Sheet + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 16 Contacts, Through Hole Mount HARWIN You previously purchased this product. View in Order History	95 in stock + Check Stock & Lead Times 95 in stock for next day delivery (UK stock) More stock available week commencing 13/07/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408716 2408707 in Full Reel	1+ £12.58 £15.10 10+ £10.40 £12.48 25+ £9.62 £11.54 100+ £8.84 £10.61 250+ £8.37 £10.04 500+ £7.89 £9.47 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Through Hole	-	-	-	-	Copper	Gold Plated Contacts
G125-FV12605L0P	2408718 + RoHS Date/Lot Code	PCB Receptacle, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 26 Contacts, Through Hole Mount HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 13/07/26 Contact me when back in stock	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408718 2408709 in Full Reel	1+ £18.38 £22.06 10+ £15.62 £18.74 25+ £14.45 £17.34 100+ £13.28 £15.94 250+ £12.57 £15.08 500+ £11.86 £14.23 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Through Hole	-	-	-	-	Copper	Gold Plated Contacts
G125-FW10450AAL9400	2408720 Data Sheet + RoHS Date/Lot Code	Cable Assembly, Crimp Receptacle to Free End, 17.717 ", 450 mm, Gecko G125 Series, White HARWIN You previously purchased this product. View in Order History	57 in stock + Check Stock & Lead Times 57 in stock for next day delivery (UK stock) 280 more will be available week commencing 31/05/26 840 more will be available week commencing 07/06/26 280 more will be available week commencing 28/06/26 More stock available week commencing 29/06/26	Each	1+ £4.42 £5.30 10+ £3.86 £4.63 100+ £3.20 £3.84 250+ £2.87 £3.44 500+ £2.81 £3.37 1000+ £2.76 £3.31 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125 Series	-	-	-	-	-	-	-	-
G125-FW10150F94	2408723 Data Sheet + RoHS Date/Lot Code	Cable Assembly, Crimp Socket to Crimp Socket, 5.906 ", 150 mm, White HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each Non-Cancellable / Non Returnable	null	Restricted Item	-	-	-	-	-	-	-	-	-
G125-MS11205L3R	2408728 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 12 Contacts, Surface Mount, Gecko G125 HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 06/07/26 Contact me when back in stock	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408728 2408736 in Cut Tape	400+ £4.31 £5.17 1200+ £3.99 £4.79	Restricted Item Minimum order of 400 items Multiples of 400 only Please enter a valid quantity Add Min: 400 Mult: 400	Gecko G125	-	Surface Mount	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MS12005L3R	2408730 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 20 Contacts, Surface Mount, Gecko G125 HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 99 days	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408730 2408738 in Cut Tape Non-Cancellable / Non Returnable	400+ £4.27 £5.12	Restricted Item Minimum order of 400 items Multiples of 400 only Please enter a valid quantity Add Min: 400 Mult: 400	Gecko G125	-	Surface Mount	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MV11205L1R	2408732 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 12 Contacts, Through Hole, Gecko G125 HARWIN You previously purchased this product. View in Order History	Available to supplier Lead Time + Check lead times Lead time 99 days	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408732 2408742 in Cut Tape Non-Cancellable / Non Returnable	1000+ £2.36 £2.83	Restricted Item Minimum order of 1000 items Multiples of 1000 only Please enter a valid quantity Add Min: 1000 Mult: 1000	Gecko G125	-	Through Hole	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MV11205L1P	2408742 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 12 Contacts, Through Hole, Gecko G125 HARWIN You previously purchased this product. View in Order History	146 in stock + Check Stock & Lead Times 146 in stock for next day delivery (UK stock) More stock available week commencing 06/07/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408742 2408732 in Full Reel	1+ £4.95 £5.94 10+ £3.80 £4.56 100+ £3.23 £3.88 250+ £3.06 £3.67 500+ £2.88 £3.46 1000+ £2.75 £3.30 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Through Hole	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MV12605L1P	2408745 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 26 Contacts, Through Hole, Gecko G125 HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408745 2408735 in Full Reel	null	Restricted Item	Gecko G125	-	Through Hole	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MW20450L94	2408749 Data Sheet + RoHS Date/Lot Code	Cable Assembly, 17.717 ", 450 mm, White HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each	null	Restricted Item	-	-	-	-	-	-	-	-	-
Z125-902	2408761 Data Sheet Date/Lot Code	Insertion Tool, G125 GECKOP Crimp Contacts HARWIN You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times 73 more will be available week commencing 10/05/26 60 more will be available week commencing 07/06/26 More stock available week commencing 08/06/26 Contact me when back in stock	Each	1+ £77.15 £92.58 5+ £71.51 £85.81 10+ £69.22 £83.06 25+ £66.29 £79.55 50+ £64.96 £77.95 100+ £63.64 £76.37 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	-	-	-	G125 GECKOP Crimp Contacts	-	-	-	-	-