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

View Product Range

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.

Compare Selected Compare Add Selected Add

Contract pricing display is unavailable at the moment. Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.

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
G125-0020005	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	23,856 in stock + Check Stock & Lead Times 23,856 in stock for next day delivery (UK stock) 15,600 more will be available week commencing 14/06/26 8,400 more will be available week commencing 05/07/26 24,600 more will be available week commencing 02/08/26 More stock available week commencing 03/08/26	Each	1+ £1.28 £1.54 10+ £1.00 £1.20 100+ £0.807 £0.97 500+ £0.72 £0.86	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
G125-1010005	2408690 Data Sheet + RoHS Date/Lot Code	Contact, Gecko-SL G125, Pin, Crimp, Gecko G125 Series Housing Connectors, 26 AWG, 26 AWG HARWIN You previously purchased this product. View in Order History	11,505 in stock + Check Stock & Lead Times 11,505 in stock for next day delivery (UK stock) 5,600 more will be available week commencing 21/06/26 2,800 more will be available week commencing 19/07/26 11,200 more will be available week commencing 26/07/26 More stock available week commencing 03/08/26	Each	1+ £1.02 £1.22 10+ £0.813 £0.98 100+ £0.642 £0.77 500+ £0.573 £0.69	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	26AWG	26AWG	2.8A	Brass	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	3,353 in stock + Check Stock & Lead Times 3,353 in stock for next day delivery (UK stock) 4,800 more will be available week commencing 26/07/26 More stock available week commencing 03/08/26	Each	1+ £1.05 £1.26 10+ £0.839 £1.01 100+ £0.665 £0.80 500+ £0.593 £0.71	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
G125-2041696L0	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	492 in stock + Check Stock & Lead Times 492 in stock for next day delivery (UK stock) 870 more will be available week commencing 19/07/26 More stock available week commencing 03/08/26	Each	1+ £2.50 £3.00 10+ £1.88 £2.26 100+ £1.60 £1.92 250+ £1.50 £1.80	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	247 in stock + Check Stock & Lead Times 247 in stock for next day delivery (UK stock) 600 more will be available week commencing 28/06/26 More stock available week commencing 03/08/26	Each	1+ £2.75 £3.30 10+ £2.08 £2.50 100+ £1.76 £2.11 250+ £1.65 £1.98	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	-	-	-	-	-
G125-3041696L4	2408698 + 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	170 in stock + Check Stock & Lead Times 170 in stock for next day delivery (UK stock) More stock available week commencing 10/08/26	Each	1+ £3.67 £4.40 10+ £2.80 £3.36 100+ £2.38 £2.86 250+ £2.23 £2.68	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	29 in stock + Check Stock & Lead Times 29 in stock for next day delivery (UK stock) 400 more will be available week commencing 19/07/26 More stock available week commencing 10/08/26	Each	1+ £3.88 £4.66 10+ £2.96 £3.55 100+ £2.52 £3.02 250+ £2.36 £2.83	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 31/08/26 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-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 98 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-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 100 days	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408710 2408701 in Full Reel Non-Cancellable / Non Returnable	150+ £6.34 £7.61	Restricted Item Minimum order of 150 items Multiples of 150 only Please enter a valid quantity Add Min: 150 Mult: 150	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	217 in stock + Check Stock & Lead Times 217 in stock for next day delivery (UK stock) More stock available week commencing 07/09/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408716 2408707 in Full Reel	1+ £13.48 £16.18 10+ £11.26 £13.51 25+ £10.42 £12.50 100+ £9.57 £11.48	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-FV12005L0P	2408717 + 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	151 in stock + Check Stock & Lead Times 151 in stock for next day delivery (UK stock) More stock available week commencing 31/08/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408717 2408708 in Full Reel	1+ £15.13 £18.16 10+ £12.85 £15.42 25+ £11.89 £14.27 100+ £10.93 £13.12	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-FW10150L94	2408719 Data Sheet + RoHS Date/Lot Code	Cable Assembly, Crimp Receptacle to Free End, 5.906 ", 150 mm, Gecko G125 Series, White HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each	null	Restricted Item	Gecko G125 Series	-	-	-	-	-	-	-	-
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	861 in stock + Check Stock & Lead Times 861 in stock for next day delivery (UK stock) 280 more will be available week commencing 28/06/26 560 more will be available week commencing 12/07/26 More stock available week commencing 27/07/26	Each	1+ £4.66 £5.59 10+ £4.08 £4.90 100+ £3.38 £4.06 250+ £3.03 £3.64	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-FW10300F94	2408724 Data Sheet RoHS	Cable Assembly, Crimp Socket to Crimp Socket, 11.811 ", 300 mm, White HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each	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 31/08/26 Contact me when back in stock	Each (Supplied on Full Reel) Full Reel Packaging Options Suggested replacement for:2408728 2408736 in Cut Tape	400+ £4.55 £5.46 1200+ £4.21 £5.05	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 98 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-MS12605L3R	2408731 Data Sheet + RoHS Date/Lot Code	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 26 Contacts, Surface Mount, Gecko G125 HARWIN You previously purchased this product. View in Order History	No Longer Stocked	Each (Supplied on Full Reel) Full Reel Non-Cancellable / Non Returnable	null	Restricted Item	Gecko G125	-	Surface Mount	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MS11205L3P	2408736 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	71 in stock + Check Stock & Lead Times 71 in stock for next day delivery (UK stock) More stock available week commencing 31/08/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408736 2408728 in Full Reel	1+ £7.10 £8.52 10+ £5.56 £6.67 100+ £4.73 £5.68 250+ £4.64 £5.57	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Surface Mount	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MS11605L3P	2408737 Data Sheet + RoHS	Pin Header, Black / Green, Wire-to-Board, 1.25 mm, 2 Rows, 16 Contacts, Surface Mount, Gecko G125 HARWIN You previously purchased this product. View in Order History	207 in stock + Check Stock & Lead Times 207 in stock for next day delivery (UK stock) More stock available week commencing 07/09/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408737 2408729 in Full Reel	1+ £7.75 £9.30 10+ £6.11 £7.33 25+ £5.66 £6.79 100+ £5.20 £6.24	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Surface Mount	-	-	-	-	Phosphor Bronze	Gold Plated Contacts
G125-MS12005L3P	2408738 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	33 in stock + Check Stock & Lead Times 33 in stock for next day delivery (UK stock) 80 more will be available week commencing 28/06/26 160 more will be available week commencing 02/08/26 More stock available week commencing 31/08/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408738 2408730 in Full Reel	1+ £8.71 £10.45 10+ £6.93 £8.32 25+ £6.41 £7.69 100+ £5.89 £7.07	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Gecko G125	-	Surface Mount	-	-	-	-	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	56 in stock + Check Stock & Lead Times 56 in stock for next day delivery (UK stock) 300 more will be available week commencing 09/08/26 More stock available week commencing 31/08/26	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2408742 2408732 in Full Reel	1+ £4.94 £5.93 10+ £3.79 £4.55 100+ £3.23 £3.88 250+ £3.17 £3.80	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-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	28 in stock + Check Stock & Lead Times 28 in stock for next day delivery (UK stock) 108 more will be available week commencing 21/06/26 24 more will be available week commencing 02/08/26 More stock available week commencing 03/08/26	Each	1+ £77.02 £92.42 5+ £71.39 £85.67 10+ £69.09 £82.91 25+ £66.18 £79.42	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	-	-	-	-	-