Board-to-Board Connectors

Molex Board-to-Board Connectors are available in a variety of configurations, offering an expansive array of pitches and stacking heights. The printed circuit board (PCB) is a foundational staple in the electronics industry, and with continuing trends toward miniaturization, designers need a more diverse range of solutions for creating dependable PCB connections. To fit a range of applications, Molex Board-to-Board Connectors include mezzanine, backplane, coplanar, and more. These connectors are ideal for microminiature and high-power applications.

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Number of Positions
Pitch
Number of Rows
Termination Style
Mounting Angle
Stack Height
Current Rating
Voltage Rating
Minimum Operating Temperature
Maximum Operating Temperature
Contact Plating
Contact Material
Housing Material
Series
Packaging
Molex Board to Board & Mezzanine Connectors 40 Ckt Plug J-leads & solder tab
Datasheet
1,181In Stock
15,000Expected 09/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Headers 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 1.5 mm, 1.8 mm 300 mA 50 V - 25 C + 85 C Gold Brass Liquid Crystal Polymer (LCP) 55909 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SLIMSTACK FSB5 .40MM RECEPT 40CKT
Datasheet
3,403In Stock
Min.: 1
Mult.: 1
Reel: 3,300

Receptacles 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5 mm 300 mA 40 V - 40 C + 125 C Gold Copper Liquid Crystal Polymer (LCP) 203955 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SLIMSTACK FSB5 .40MM PLUG 40CKT
Datasheet
2,214In Stock
6,600Expected 30/04/2026
Min.: 1
Mult.: 1
Reel: 2,200

Headers 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5 mm 300 mA 40 V - 40 C + 125 C Gold Copper Liquid Crystal Polymer (LCP) 203956 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors .40mm SlimStack Floating Plug 20Ckt
Datasheet
1,103In Stock
Min.: 1
Mult.: 1
Reel: 3,000

Headers 20 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 3 mm 300 mA 40 V - 40 C + 125 C Gold Copper Liquid Crystal Polymer (LCP) 204928 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors .40mm SlimStack Floating Plug 50Ckt
Datasheet
1,984In Stock
Min.: 1
Mult.: 1
Reel: 3,000

Headers 50 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 3 mm 300 mA 40 V - 40 C + 125 C Gold Copper Liquid Crystal Polymer (LCP) 204928 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY PLUG 10ROW 400P 3.5MM SH
Datasheet
191In Stock
300Expected 08/04/2026
Min.: 1
Mult.: 1
Reel: 300

Headers 400 Position 1.27 mm (0.05 in) 10 Row Solder Vertical 2 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 45970 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY PLUG 8ROW 320P 3.5MM SH
Datasheet
191In Stock
1,200Expected 01/06/2026
Min.: 1
Mult.: 1
Reel: 300

Headers 320 Position 1.27 mm (0.05 in) 8 Row Solder Vertical 2 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 45970 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 10ROW 200P 3.5MM SH
Datasheet
310In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 350

Receptacles 200 Position 1.27 mm (0.05 in) 10 Row Solder Vertical 5 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 45971 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 10ROW 400P 3.5MM SH
Datasheet
186In Stock
Min.: 1
Mult.: 1
Reel: 350

Receptacles 400 Position 1.27 mm (0.05 in) 10 Row Solder Vertical 5 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 45971 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SeaRay Slim Plug 04X40 2.9 Tin
Datasheet
456In Stock
Min.: 1
Mult.: 1
Reel: 280

Headers 160 Position 1.27 mm (0.05 in) 4 Row Solder Vertical 3 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 46556 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY PLUG 4ROW 160P 8.5MM SH
Datasheet
126In Stock
150Expected 12/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 150

Headers 160 Position 1.27 mm (0.05 in) 4 Row Solder Vertical 7 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 46556 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 4ROW 40P 6.5MM SH
Datasheet
288In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 210

Receptacles 40 Position 1.27 mm (0.05 in) 4 Row Solder Vertical 8 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 46557 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 4ROW 80P 3.5MM SH
Datasheet
278In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 350

Receptacles 80 Position 1.27 mm (0.05 in) 4 Row Solder Vertical 5 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 46557 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 4ROW 160P 6.5MM SH
Datasheet
94In Stock
210Expected 12/05/2026
Min.: 1
Mult.: 1
Reel: 210

Receptacles 160 Position 1.27 mm (0.05 in) 4 Row Solder Vertical 8 mm 2.7 A 240 VAC - 55 C + 125 C Gold Copper Thermoplastic (TP) 46557 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 0.5 BtB Plg Assy 16C ssy 16Ckt EmbsTp Pkg
Datasheet
5,704In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Headers 16 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 2.5 mm 500 mA 50 V - 40 C + 105 C Gold Brass Thermoplastic (TP) 500334 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy 70Ckt EmbsTp Pkg
Datasheet
3,648In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Headers 70 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 2 mm, 2.3 mm 300 mA 50 V - 40 C + 105 C Gold Brass, Phosphor Bronze Liquid Crystal Polymer (LCP) 501745 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy 80 ssy 80Ckt EmbsTp Pkg
Datasheet
5,426In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Headers 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 2 mm, 2.3 mm 300 mA 50 V - 40 C + 105 C Gold Brass, Phosphor Bronze Liquid Crystal Polymer (LCP) 501745 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 30P SMT BD-BD PLUG 2R VERT W/O SLDR TAB
Datasheet
1,298In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Plugs 30 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 4 mm 500 mA 50 V - 40 C + 105 C Gold Thermoplastic (TP) 501920 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.5 B/B Plug Hsg Assy 40 Ckt
Datasheet
1,427In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Plugs 40 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 4 mm 500 mA 50 V - 40 C + 105 C Gold 501920 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.5 B/B Plug Hsg Ass y 50Ckt EmbsTp Pkg
Datasheet
3,741In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Plugs 50 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 4 mm 500 mA 50 V - 40 C + 105 C Gold 501920 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SlimStack .4mm Rcpt SMT DR Vrt 8Ckt
Datasheet
13,924In Stock
Min.: 1
Mult.: 1
Reel: 7,000

Receptacles 8 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 1 mm 300 mA 50 V - 25 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 502426 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 0.4 B/B PLUG ASSY W/TAPE 80P
Datasheet
5,676In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Headers 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 1 mm 300 mA 50 V - 20 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 502430 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 B/B PLG RA ASYW/ BOSS30CKTEMBSTPPKG
Datasheet
4,143In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Plugs 30 Position 0.4 mm (0.016 in) 2 Row Solder Right Angle 300 mA 30 V - 40 C + 105 C Gold 503376 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF RECEPT 14CKT
Datasheet
5,701In Stock
Min.: 1
Mult.: 1
Reel: 7,000

Receptacles 14 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 0.7 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 503548 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF PLUG 10CKT
Datasheet
26,492In Stock
56,000Expected 29/06/2026
Min.: 1
Mult.: 1
Reel: 7,000

Headers 10 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 0.7 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 503552 Reel, Cut Tape