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 (IDR) 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 0.4 BTB RA REC HSG ASSY 30CKT EMBSTPPKG
Datasheet
2.969In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

Connectors 30 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 300 mA 30 V - 40 C + 105 C Gold 54552 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 0.4 B/B RA Rec Hsg Assy 34Ckt EmbsTpPkg
Datasheet
1.587In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.500

Receptacles 34 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 0.5mm BTB SMT REC 30P 1.5MM HEIGHT
Datasheet
4.195In Stock
18.000Expected 16/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Receptacles 30 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 30 CKT
Datasheet
5.366In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

Headers 30 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 .635 HEADER SURFACE MNT 40 CKT
Datasheet
4.221In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

Headers 40 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 .635 HEADER SURFACE MNT 60 CKT
Datasheet
949In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1.000

Headers 60 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 .5MM VERT PLG 20CKT SMT DUAL ROW
Datasheet
3.961In Stock
12.000Expected 01/06/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Headers 20 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 .5MM VERT PLG 22CKT SMT DUAL ROW
Datasheet
2.570In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Headers 22 Position 0.5 mm (0.02 in) 2 Row Solder Vertical 1.5 mm 500 mA 50 V - 25 C + 85 C Gold Brass Liquid Crystal Polymer (LCP) 55560 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors 40 Ckt Vert. Plug 0.5 mm SMT Dual-Row
Datasheet
2.940In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

Headers 40 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 20 Ckt Plug J-leads & solder tab
Datasheet
3.943In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

Headers 20 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 .40mm SlimStack Rec Floating 40Ckt
Datasheet
1.838In Stock
Min.: 1
Mult.: 1
Reel: 3.000

Receptacles 40 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) 204927 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY RECPT 4ROW 40P 3.5MM SH
Datasheet
82In Stock
Min.: 1
Mult.: 1

Receptacles 40 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 Tray
Molex Board to Board & Mezzanine Connectors SlimStack .40mm Plug 16Ckt
Datasheet
7.672In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 7.000

Plugs 16 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 0.8 mm 300 mA 50 V - 40 C + 85 C Gold Liquid Crystal Polymer (LCP) 505551 Reel, Cut Tape, MouseReel
Molex Board to Board & Mezzanine Connectors SLIMSTACK FSB5 .40MM PLUG 30CKT
Datasheet
836In Stock
6.600Expected 13/05/2026
Min.: 1
Mult.: 1
Reel: 2.200

Headers 30 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 Rec Floating 60Ckt
Datasheet
875In Stock
Min.: 1
Mult.: 1
Reel: 3.000

Receptacles 60 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) 204927 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors .40mm SlimStack Floating Plug 60Ckt
Datasheet
804In Stock
Min.: 1
Mult.: 1
Reel: 3.000

Headers 60 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 5GmmWave Flex to Board Recept Series5G15
Datasheet
8.087In Stock
Min.: 1
Mult.: 1
Reel: 20.000

Receptacles 6 Position 0.35 mm (0.014 in) 2 Row Solder Vertical 300 mA, 1 A 50 V - 40 C + 85 C Gold Copper Alloy Liquid Crystal Polymer (LCP) 216360 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors 1.27MM SEARAY PLUG 4ROW 40P 8.5MM SH
Datasheet
36In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 150

Headers 40 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 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 30P SMT BD-BD PLUG 2R VERT W/O SLDR TAB
Datasheet
877In 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 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 RECEPT 10CKT
Datasheet
20.788In Stock
Min.: 1
Mult.: 1
Reel: 7.000

Receptacles 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) 503548 Reel, Cut Tape
Molex Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF RECEPT 14CKT
Datasheet
5.601In 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