Board to Board & Mezzanine Connectors

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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	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
Board to Board & Mezzanine Connectors SlimStack .35MM SSB RP REC 24CKT ARMRNAL 505270-2412 Molex 1: $0.994 55,342In Stock	Mfr. Part # 505270-2412 Mouser Part # 538-505270-2412	Molex	Board to Board & Mezzanine Connectors SlimStack .35MM SSB RP REC 24CKT ARMRNAL	Datasheet	55,342In Stock	Cut Tape $0.994 $0.848 $0.757 $0.721 Reel $0.491 View $0.644 $0.613 $0.575 $0.462 MouseReel Available	Min.: 1 Mult.: 1 : 7,000	Receptacles	24 Position	0.35 mm (0.014 in)	2 Row	Solder	Vertical	0.7 mm, 0.8 mm	300 mA	50 V	- 40 C	+ 85 C	Gold	Copper	Liquid Crystal Polymer (LCP)	505070	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 80 Ckt Receptacle J-leads & solder tab 51338-0874 Molex 1: $4.39 11,515In Stock	Mfr. Part # 51338-0874 Mouser Part # 538-51338-0874	Molex	Board to Board & Mezzanine Connectors 80 Ckt Receptacle J-leads & solder tab Learn More about Molex high speed solutions	Datasheet	11,515In Stock	Cut Tape $4.39 $3.74 $3.34 $3.18 Reel $2.72 View $2.97 $2.88 $2.72 $2.62 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Receptacles	80 Position	0.4 mm (0.016 in)	2 Row	Solder	Vertical		300 mA	50 V	- 25 C	+ 85 C	Gold		Thermoplastic (TP)	51338	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 40 Ckt Plug J-leads & solder tab 55909-0474 Molex 1: $4.31 25,600In Stock	Mfr. Part # 55909-0474 Mouser Part # 538-55909-0474	Molex	Board to Board & Mezzanine Connectors 40 Ckt Plug J-leads & solder tab Learn More about Molex slimstack	Datasheet	25,600In Stock	Cut Tape $4.31 $3.66 $3.43 $3.37 Reel $2.51 View $3.21 $2.98 $2.91 $2.43 MouseReel Available	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors SlimStack .35mm Conn Rcpt 40Ckt Armornail 505270-4012 Molex 1: $1.24 39,730In Stock	Mfr. Part # 505270-4012 Mouser Part # 538-505270-4012	Molex	Board to Board & Mezzanine Connectors SlimStack .35mm Conn Rcpt 40Ckt Armornail Learn More about Molex slimstack	Datasheet	39,730In Stock	Cut Tape $1.24 $1.05 $0.939 $0.893 Reel $0.569 View $0.798 $0.697 $0.654 $0.497 MouseReel Available	Min.: 1 Mult.: 1 : 7,000	Receptacles	40 Position	0.35 mm (0.014 in)	2 Row	Solder	Vertical	0.7 mm, 0.8 mm	300 mA	50 V	- 40 C	+ 85 C	Gold	Copper	Liquid Crystal Polymer (LCP)	505070	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 0.5mm BTB SMT REC 20P 1.5MM HEIGHT 54722-0204 Molex 1: $2.69 12,193In Stock	Mfr. Part # 54722-0204 Mouser Part # 538-54722-0204	Molex	Board to Board & Mezzanine Connectors 0.5mm BTB SMT REC 20P 1.5MM HEIGHT Learn More about Molex high speed solutions	Datasheet	12,193In Stock	Cut Tape $2.69 $2.38 $2.20 $2.10 Reel $1.58 View $1.99 $1.90 $1.77 $1.56 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Receptacles	20 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
Board to Board & Mezzanine Connectors 0.8 BtB Hsg Assy SMT SMT 40Ckt EmbsTp Pk 52465-4071 Molex 1: $5.89 28,579In Stock	Mfr. Part # 52465-4071 Mouser Part # 538-52465-4071	Molex	Board to Board & Mezzanine Connectors 0.8 BtB Hsg Assy SMT SMT 40Ckt EmbsTp Pk	Datasheet	28,579In Stock	Cut Tape $5.89 $5.01 $4.48 $4.26 Reel $3.41 View $3.63 $3.51 $3.12 $3.00 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Receptacles	40 Position	0.8 mm (0.031 in)	2 Row	Solder	Vertical	4.5 mm, 5.65 mm, 6 mm, 7 mm	500 mA	50 V	- 40 C	+ 105 C	Tin	Copper	Thermoplastic (TP)	52465	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors .40mm SlimStack Floating Plug 20Ckt 204928-0201 Molex 1: $4.94 8,729In Stock	Mfr. Part # 204928-0201 Mouser Part # 538-204928-0201	Molex	Board to Board & Mezzanine Connectors .40mm SlimStack Floating Plug 20Ckt Learn More about Molex fsb5 b2b connectors	Datasheet	8,729In Stock	Cut Tape $4.94 $4.20 $3.76 $3.57 Reel $2.94 View $3.36 $3.20 $3.14 $2.72	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors 24CKT DR VERT RECEPT SURFACE MNT 51338-2474 Molex 1: $3.87 11,334In Stock	Mfr. Part # 51338-2474 Mouser Part # 538-51338-2474	Molex	Board to Board & Mezzanine Connectors 24CKT DR VERT RECEPT SURFACE MNT Learn More about Molex high speed solutions	Datasheet	11,334In Stock	Cut Tape $3.87 $3.31 $2.94 $2.84 Reel $2.23 View $2.66 $2.56 $2.43 $2.10 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Receptacles	24 Position	0.4 mm (0.016 in)	2 Row	Solder	Vertical	1.5 mm, 2 mm	300 mA	50 V	- 40 C	+ 105 C	Gold	Copper	Liquid Crystal Polymer (LCP)	51338	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 40 Ckt Vert. Recept. 0.5mm SMT Dual-Row 52991-0408 Molex 1: $5.39 22,307In Stock	Mfr. Part # 52991-0408 Mouser Part # 538-52991-0408	Molex	Board to Board & Mezzanine Connectors 40 Ckt Vert. Recept. 0.5mm SMT Dual-Row Learn More about Molex slimstack	Datasheet	22,307In Stock	Cut Tape $5.39 $4.65 $4.16 $3.96 View Reel $2.98 $3.72 $3.54 $3.40 $2.98 Quote MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Receptacles	40 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
Board to Board & Mezzanine Connectors 0.5 BtB Rec Hsg Assy ssy 24Ckt EmbsTp Pk 54722-0244 Molex 1: $2.35 18,842In Stock	Mfr. Part # 54722-0244 Mouser Part # 538-54722-0244	Molex	Board to Board & Mezzanine Connectors 0.5 BtB Rec Hsg Assy ssy 24Ckt EmbsTp Pk Learn More about Molex high speed solutions	Datasheet	18,842In Stock	Cut Tape $2.35 $2.04 $1.96 $1.83 Reel $1.16 View $1.66 $1.53 $1.36 $1.13 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Receptacles	24 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
Board to Board & Mezzanine Connectors .35mm SlimStack Conn Plug 24Ckt ArmorNail 505070-2422 Molex 1: $1.04 73,112In Stock	Mfr. Part # 505070-2422 Mouser Part # 538-505070-2422	Molex	Board to Board & Mezzanine Connectors .35mm SlimStack Conn Plug 24Ckt ArmorNail Learn More about Molex slimstack	Datasheet	73,112In Stock	Cut Tape $1.04 $0.877 $0.783 $0.746 View Reel $0.465 $0.665 $0.609 $0.572 $0.508 $0.465 MouseReel Available	Min.: 1 Mult.: 1 : 8,000	Headers	24 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
Board to Board & Mezzanine Connectors 0.5 BTB STR REC HSG TR REC HSG 529910608 52991-0608 Molex 1: $7.07 6,214In Stock	Mfr. Part # 52991-0608 Mouser Part # 538-52991-0608	Molex	Board to Board & Mezzanine Connectors 0.5 BTB STR REC HSG TR REC HSG 529910608 Learn More about Molex high speed solutions	Datasheet	6,214In Stock	Cut Tape $7.07 $6.00 $5.63 $5.36 View Reel $3.86 $5.10 $4.78 $4.65 $4.45 $3.86 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Receptacles	60 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
Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy 80 ssy 80Ckt EmbsTp Pkg 501745-0801 Molex 1: $3.95 10,169In Stock	Mfr. Part # 501745-0801 Mouser Part # 538-501745-0801	Molex	Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy 80 ssy 80Ckt EmbsTp Pkg Learn More about Molex high speed solutions	Datasheet	10,169In Stock	Cut Tape $3.95 $3.93 $3.63 $3.56 Reel $2.38 View $3.40 $3.33 $3.10 $2.28 MouseReel Available	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors 40 Ckt Vert. Plug 0.5mm SMT Dual-Row 53748-0408 Molex 1: $3.44 27,533In Stock	Mfr. Part # 53748-0408 Mouser Part # 538-53748-0408	Molex	Board to Board & Mezzanine Connectors 40 Ckt Vert. Plug 0.5mm SMT Dual-Row Learn More about Molex slimstack	Datasheet	27,533In Stock	Cut Tape $3.44 $3.12 $2.94 $2.79 Reel $2.26 View $2.58 $2.51 $2.36 $2.16 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Headers	40 Position	0.5 mm (0.02 in)	2 Row	Solder	Vertical	3 mm	500 mA	50 V	- 40 C	+ 105 C	Gold	Brass	Liquid Crystal Polymer (LCP)	53748	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 0.35 B/B Rec Assy 34Ckt EmbsTp Pkg 505413-3410 Molex 1: $1.18 38,807In Stock	Mfr. Part # 505413-3410 Mouser Part # 538-505413-3410	Molex	Board to Board & Mezzanine Connectors 0.35 B/B Rec Assy 34Ckt EmbsTp Pkg Learn More about Molex slimstack armor	Datasheet	38,807In Stock	Cut Tape $1.18 $1.01 $0.899 $0.855 Reel $0.634 View $0.763 $0.696 $0.652 $0.602 MouseReel Available	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors SlimStack .4mm Rcpt SMT DR Vrt 8Ckt 502426-0812 Molex 1: $1.25 62,333In Stock	Mfr. Part # 502426-0812 Mouser Part # 538-50242-60812	Molex	Board to Board & Mezzanine Connectors SlimStack .4mm Rcpt SMT DR Vrt 8Ckt Learn More about Molex slimstack	Datasheet	62,333In Stock	Cut Tape $1.25 $1.09 $0.994 $0.897 Reel $0.487 View $0.819 $0.678 $0.636 $0.481	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors .40mm SlimStack Rec Floating 20Ckt 204927-0201 Molex 1: $4.35 9,827In Stock	Mfr. Part # 204927-0201 Mouser Part # 538-204927-0201	Molex	Board to Board & Mezzanine Connectors .40mm SlimStack Rec Floating 20Ckt Learn More about Molex fsb5 b2b connectors	Datasheet	9,827In Stock	Cut Tape $4.35 $3.70 $3.31 $3.15 Reel $2.42 View $2.95 $2.81 $2.72 $2.35	Min.: 1 Mult.: 1 : 3,000	Receptacles	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)	204927	Reel, Cut Tape
Board to Board & Mezzanine Connectors SlimStack .4mm Plg SMT DR Vrt Stk 40Ckt 502430-4012 Molex 1: $2.26 39,904In Stock	Mfr. Part # 502430-4012 Mouser Part # 538-50243-04012	Molex	Board to Board & Mezzanine Connectors SlimStack .4mm Plg SMT DR Vrt Stk 40Ckt Learn More about Molex slimstack	Datasheet	39,904In Stock	Cut Tape $2.26 $1.97 $1.89 $1.77 View Reel $1.06 $1.60 $1.47 $1.32 $1.27 $1.06	Min.: 1 Mult.: 1 : 7,000	Headers	40 Position	0.4 mm (0.016 in)	2 Row	Solder	Vertical	1 mm	300 mA	50 V	- 20 C	+ 85 C	Gold		Liquid Crystal Polymer (LCP)	502430	Reel, Cut Tape
Board to Board & Mezzanine Connectors .635 HEADER SURFACE MNT 50 CKT 53625-0574 Molex 1: $10.18 507In Stock 3,000Expected 2026-11-19	Mfr. Part # 53625-0574 Mouser Part # 538-53625-0574	Molex	Board to Board & Mezzanine Connectors .635 HEADER SURFACE MNT 50 CKT Learn More about Molex slimstack 0635mm b2b connectors	Datasheet	507In Stock 3,000Expected 2026-11-19	Cut Tape $10.18 $9.33 $8.42 $8.15 Reel $5.70 View $7.75 $6.93 $6.72 $5.50 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	Headers	50 Position	0.64 mm (0.025 in)	2 Row	Solder	Vertical	7 mm, 13 mm	500 mA	100 V	- 55 C	+ 105 C	Gold	Copper	Thermoplastic (TP)	53625	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors SlimStack .635mm Plg 60Ckt 53625-0674 Molex 1: $10.31 507In Stock	Mfr. Part # 53625-0674 Mouser Part # 538-53625-0674	Molex	Board to Board & Mezzanine Connectors SlimStack .635mm Plg 60Ckt Learn More about Molex slimstack 0635mm b2b connectors	Datasheet	507In Stock	Cut Tape $10.31 $9.33 $8.81 $8.60 View Reel $5.98 $8.18 $7.32 $7.04 $5.98	Min.: 1 Mult.: 1 : 1,000	Headers	60 Position	0.64 mm (0.025 in)	2 Row	Solder	Vertical	7 mm, 13 mm	500 mA	100 V	- 55 C	+ 105 C	Gold	Copper	Thermoplastic (TP)	53625	Reel, Cut Tape
Board to Board & Mezzanine Connectors Mirror Mezz Assy 2.5mm 6Px5R .76AuLF 202828-0506 Molex 1: $56.66 1,733In Stock	Mfr. Part # 202828-0506 Mouser Part # 538-202828-0506	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Assy 2.5mm 6Px5R .76AuLF Learn More about Molex mirror mezz connectors	Datasheet	1,733In Stock	Cut Tape $56.66 $50.72 $47.91 $47.49 View Reel $40.45 $45.91 $40.46 $40.45 Quote	Min.: 1 Mult.: 1 : 500	Connectors	124 Position	1.5 mm (0.059 in)	5 Row	Solder	Vertical	2.5 mm	1 A	30 V	- 55 C	+ 105 C	Gold	Copper	Thermoplastic (TP)	202828	Reel, Cut Tape
Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy W/ Tape 14Ckt EmbsTpPkg 502430-1430 Molex 1: $0.907 21,606In Stock	Mfr. Part # 502430-1430 Mouser Part # 538-502430-1430	Molex	Board to Board & Mezzanine Connectors 0.4 B/B Plug Assy W/ Tape 14Ckt EmbsTpPkg Learn More about Molex high speed solutions	Datasheet	21,606In Stock	Cut Tape $0.907 $0.785 $0.717 $0.634 Reel $0.547 View $0.593 $0.572 $0.531 $0.528 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Headers	14 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
Board to Board & Mezzanine Connectors SlimStack B/B Rcpt .35mm 12Ckt 505066-1222 Molex 1: $0.734 63,278In Stock	Mfr. Part # 505066-1222 Mouser Part # 538-505066-1222	Molex	Board to Board & Mezzanine Connectors SlimStack B/B Rcpt .35mm 12Ckt Learn More about Molex slimstack	Datasheet	63,278In Stock	Cut Tape $0.734 $0.632 $0.579 $0.523 View Reel $0.346 $0.477 $0.402 $0.377 $0.347 $0.346 MouseReel Available	Min.: 1 Mult.: 1 : 8,000	Receptacles	12 Position	0.35 mm (0.014 in)	2 Row	Solder	Vertical	0.6 mm	300 mA	50 V	- 40 C	+ 85 C	Gold	Copper	Liquid Crystal Polymer (LCP)	505066	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors SlimStack .35mm Conn Rcpt 16Ckt 505066-1622 Molex 1: $0.878 106,911In Stock	Mfr. Part # 505066-1622 Mouser Part # 538-505066-1622	Molex	Board to Board & Mezzanine Connectors SlimStack .35mm Conn Rcpt 16Ckt Learn More about Molex slimstack	Datasheet	106,911In Stock	Cut Tape $0.878 $0.744 $0.665 $0.634 View Reel $0.379 $0.564 $0.539 $0.504 $0.444 $0.379	Min.: 1 Mult.: 1 : 8,000	Receptacles	16 Position	0.35 mm (0.014 in)	2 Row	Solder	Vertical	0.6 mm	300 mA	50 V	- 40 C	+ 85 C	Gold	Copper	Liquid Crystal Polymer (LCP)	505066	Reel, Cut Tape
Board to Board & Mezzanine Connectors .635 HEADER SURFACE MNT 160 CKT 53647-1674 Molex 1: $11.58 1,071In Stock	Mfr. Part # 53647-1674 Mouser Part # 538-53647-1674	Molex	Board to Board & Mezzanine Connectors .635 HEADER SURFACE MNT 160 CKT Learn More about Molex slimstack 0635mm b2b connectors	Datasheet	1,071In Stock	Cut Tape $11.58 $10.43 $9.98 $9.72 View Reel $8.86 $9.40 $9.23 $9.14 $8.86	Min.: 1 Mult.: 1 : 750	Headers	160 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