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 1.27MM SEARAY RECPT 4ROW 120P 6.5MM SH
Datasheet
43In Stock
Min.: 1
Mult.: 1
Reel: 210

Receptacles 120 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 0.4 BtB Rec Hsg Assy ssy 40Ckt EmbsTp Pkg
Datasheet
1,021In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Receptacles 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 1.8 mm, 2.3 mm 300 mA 50 V - 40 C + 105 C Gold Copper Thermoplastic (TP) 500913 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy 60 ssy 60Ckt EmbsTp Pk
Datasheet
3,493In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Plugs 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 2.3 mm, 2 mm 300 mA 50 V - 25 C + 85 C Gold 501745 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SlimStack .4mm Plg SMT DR Vrt Stk 8Ckt
Datasheet
17,517In Stock
Min.: 1
Mult.: 1
Reel: 7,000

Headers 8 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 1 mm 300 mA 50 V - 20 C + 85 C Gold Copper 502430 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF PLUG 18CKT
Datasheet
682In Stock
Min.: 1
Mult.: 1
Reel: 7,000

Headers 18 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
Molex Board to Board & Mezzanine Connectors SLIMSTACK .35MM SSB RP PLG 16CKT ARMR NL
Datasheet
3,942In Stock
64,000Expected 25/02/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 8,000

Headers 16 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 0.6 mm, 0.7 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505070 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SlimStack .35mm Conn Plug 22Ckt
Datasheet
1,615In Stock
Min.: 1
Mult.: 1
Reel: 8,000
Headers 22 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 0.6 mm, 0.7 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505070 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SlimStack .35mm Conn Plug 40Ckt
Datasheet
2,482In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 8,000

Headers 40 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 0.6 mm, 0.7 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505070 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.35 B/B PLG Assy 16Ckt EmbsTp Pkg
Datasheet
599In Stock
Min.: 1
Mult.: 1
Reel: 7,000

Headers 16 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 0.8 mm, 0.9 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505274 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 0.35 B/B Rec Assy 34Ckt EmbsTp Pkg
Datasheet
47In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 7,000

Receptacles 34 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 0.9 mm, 1 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505413 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SlimStack .40mm Conn Plug 34Ckt
Datasheet
1,336In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 7,000

Receptacles 34 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 0.8 mm 300 mA 50 V - 40 C + 85 C Gold Copper Liquid Crystal Polymer (LCP) 505550 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .635 RECEPTACLE SURFACE MNT 240 CKT
Datasheet
1In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

Receptacles 240 Position 0.64 mm (0.025 in) 2 Row Solder Vertical 6 mm, 7 mm, 8 mm, 9 mm, 10 mm 500 mA 100 V - 55 C + 105 C Gold Copper Thermoplastic (TP) 52885 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .635 RECEPTACLE SURFACE MNT80 CKT
Datasheet
4In Stock
1,320Expected 23/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 440

Receptacles 80 Position 0.64 mm (0.025 in) 2 Row Solder Vertical 12 mm, 13 mm, 14 mm, 15 mm, 16 mm 500 mA 100 V - 55 C + 105 C Gold Copper Thermoplastic (TP) 52901 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .5MM 80P V RECPT 3 & 4MM STACK HGHT
Datasheet
250In Stock
9,000Expected 03/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Receptacles 80 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 3 mm, 4 mm 500 mA 50 V - 40 C + 105 C Gold Copper Liquid Crystal Polymer (LCP) 52991 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.635 BtB Hsg Cover Assy EmbsTp Pkg80Ckt
Datasheet
149In Stock
2,520Expected 27/02/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 840

Headers 80 Position 0.64 mm (0.025 in) 2 Row Solder Vertical 8 mm, 14 mm 500 mA 100 V - 55 C + 105 C Gold Copper Polyphenylene Sulfide (PPS) 53647 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .5MM VERT PLG 50CKT SMT W/O SOLDER TAB
Datasheet
687In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Headers 50 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 2.5 mm 500 mA 50 V - 40 C + 105 C Gold Brass Liquid Crystal Polymer (LCP) 53885 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.5mm BTB SMT REC 20P 2-3 MM HEIGHT
Datasheet
1,792In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Receptacles 20 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 2 mm 500 mA 50 V - 40 C + 105 C Gold Copper Thermoplastic (TP) 54363 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 BtB RA Rec Hsg Assy 40Ckt EmbsTpPkg
Datasheet
1,426In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Receptacles 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 300 mA 30 V - 40 C + 105 C Gold Liquid Crystal Polymer (LCP) 54552 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 BtB Rec Hsg Assy 24Ckt EmbsTp Pkg
Datasheet
363In Stock
9,000Expected 18/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

Receptacles 24 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 300 mA 30 V - 25 C + 105 C Gold Thermoplastic (TP) 54684 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.5mm BTB SMT REC 40P 1.5MM HEIGHT
Datasheet
2,157In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Receptacles 40 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 1.5 mm 500 mA 50 V - 25 C + 85 C Gold Copper Thermoplastic (TP) 54722 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.5mm BTB SMT REC 50P 1.5MM HEIGHT
Datasheet
1,417In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Receptacles 50 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 1.5 mm 500 mA 50 V - 40 C + 105 C Gold Copper Thermoplastic (TP) 54722 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .635 HEADER SURFACE MNT 50 CKT
Datasheet
10In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

Headers 50 Position 0.64 mm (0.025 in) 2 Row Solder Vertical 6 mm, 12 mm 500 mA 100 V - 55 C + 105 C Gold Copper Liquid Crystal Polymer (LCP) 55091 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.635 BtB Plg Hsg As ssy 90Ckt EmbsTp Pk
Datasheet
587In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

Headers 90 Position 0.64 mm (0.025 in) 2 Row Solder Vertical 6 mm, 12 mm 500 mA 100 V - 55 C + 105 C Gold Copper Liquid Crystal Polymer (LCP) 55091 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 50CKT PLUG SMT DR VERTICAL
Datasheet
148In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

Headers 50 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 1.5 mm 500 mA 50 V - 40 C + 105 C Gold Brass Liquid Crystal Polymer (LCP) 55560 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors .635MM SLIMSTAK KIT
Datasheet
3In Stock
Min.: 1
Mult.: 1

Kits 0.635 mm (0.025 in) Straight 500 mA 76650