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 (IDR) 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 .635 RECEPTACLE SURFACE MNT120 CKT 52901-1274 Molex 1: Rp248.038 143In Stock	Mfr. Part No. 52901-1274 Mouser Part No 538-52901-1274	Molex	Board to Board & Mezzanine Connectors .635 RECEPTACLE SURFACE MNT120 CKT Learn More about Molex high speed solutions	Datasheet	143In Stock	Cut Tape Rp248.038 Rp188.964 Rp181.442 Rp175.388 Reel Rp166.949 Rp166.398 MouseReel Available	Min.: 1 Mult.: 1 : 440	Receptacles	120 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
Board to Board & Mezzanine Connectors 0.5 BtB Rec Hsg Assy ssy 34Ckt EmbsTp Pkg 54722-0344 Molex 1: Rp28.253 1.353In Stock	Mfr. Part No. 54722-0344 Mouser Part No 538-54722-0344	Molex	Board to Board & Mezzanine Connectors 0.5 BtB Rec Hsg Assy ssy 34Ckt EmbsTp Pkg Learn More about Molex high speed solutions	Datasheet	1.353In Stock	Cut Tape Rp28.253 Rp24.951 Rp20.731 Rp19.814 View Reel Rp15.172 Rp18.713 Rp17.869 Rp15.172 MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Receptacles	34 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 SlimStack 0.35 B/B Plug Assy 14Ckt 505417-1417 Molex 1: Rp6.238 41.577In Stock New Product	Mfr. Part No. 505417-1417 Mouser Part No 538-505417-1417 New Product	Molex	Board to Board & Mezzanine Connectors SlimStack 0.35 B/B Plug Assy 14Ckt	Datasheet	41.577In Stock	Rp6.238 Rp6.128	Min.: 1 Mult.: 1															505417
Board to Board & Mezzanine Connectors Mirror Mezz Conn 5.50mm Conn Hgt Mnt 10 Pair 7 Row 292 CKT 0.76um Au Plt w/ Pegs 204358-0710 Molex 1: Rp1.022.606 2.319In Stock	Mfr. Part No. 204358-0710 Mouser Part No 538-204358-0710	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Conn 5.50mm Conn Hgt Mnt 10 Pair 7 Row 292 CKT 0.76um Au Plt w/ Pegs Learn More about Molex mirror mezz connectors	Datasheet	2.319In Stock	Rp1.022.606 Rp869.050 Rp826.304 Rp799.519 View Rp772.917 Rp763.744 Quote	Min.: 1 Mult.: 1															204358
Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 37 Pair 5 Row 169 CKT 0.76um Au Plt w/ Pegs 206306-0537 Molex 1: Rp1.022.239 1.928In Stock	Mfr. Part No. 206306-0537 Mouser Part No 538-206306-0537	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 37 Pair 5 Row 169 CKT 0.76um Au Plt w/ Pegs Learn More about Molex mirror mezz connectors	Datasheet	1.928In Stock	Rp1.022.239 Rp868.867 Rp825.937 Rp799.335 View Rp772.550 Rp768.881 Quote	Min.: 1 Mult.: 1															206306
Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 4 Pair 11 Row 204 CKT 0.76um Au Plt w/ Pegs 209141-1104 Molex 1: Rp601.198 670In Stock	Mfr. Part No. 209141-1104 Mouser Part No 538-209141-1104	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 4 Pair 11 Row 204 CKT 0.76um Au Plt w/ Pegs Learn More about Molex mirror mezz connectors	Datasheet	670In Stock	Rp601.198 Rp510.936 Rp479.014 Rp457.733 View Rp442.322 Rp438.469 Rp438.286	Min.: 1 Mult.: 1															209141
Board to Board & Mezzanine Connectors .175MM PLG 36P QUAD-ROW 203390-0363 Molex 1: Rp46.599 1.873In Stock	Mfr. Part No. 203390-0363 Mouser Part No 538-203390-0363	Molex	Board to Board & Mezzanine Connectors .175MM PLG 36P QUAD-ROW Learn More about Molex quad row connectors	Datasheet	1.873In Stock	Rp46.599 Rp40.178 Rp36.875 Rp36.142 View Rp33.940 Rp30.638 Rp28.803 Rp28.253 Rp27.152	Min.: 1 Mult.: 1	Connectors	36 Position	0.35 mm (0.014 in)	4 Row	Solder	Vertical		300 mA, 3 A	50 V	- 40 C	+ 85 C	Gold	Copper Alloy	Liquid Crystal Polymer (LCP)	203390
Board to Board & Mezzanine Connectors Mirror Mezz Conn 5.50mm Conn Hgt Mnt 7 Pair 11 Row 699 CKT 0.76um Au Plt w/o Peg 203456-0003 Molex 1: Rp2.649.896 1.142In Stock 2.850Expected 05/11/2026	Mfr. Part No. 203456-0003 Mouser Part No 538-2034560003	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Conn 5.50mm Conn Hgt Mnt 7 Pair 11 Row 699 CKT 0.76um Au Plt w/o Peg Learn More about Molex mirror mezz connectors	Datasheet	1.142In Stock 2.850Expected 05/11/2026	Cut Tape Rp2.649.896 Rp2.358.745 Rp2.311.779 Rp2.274.170 View Reel Rp1.953.849 Rp1.954.032 Rp1.953.849 Quote	Min.: 1 Mult.: 1 : 150	Connectors	699 Position	1.3 mm (0.051 in)	11 Row	Solder	Vertical	5.5 mm	1 A	30 V	- 55 C	+ 105 C	Gold	Copper	Thermoplastic (TP)	203456	Reel, Cut Tape
Board to Board & Mezzanine Connectors MirrorMezz Hermaph 2.5mmHght 7PX11R 204843-0001 Molex 1: Rp2.579.264 410In Stock	Mfr. Part No. 204843-0001 Mouser Part No 538-204843-0001	Molex	Board to Board & Mezzanine Connectors MirrorMezz Hermaph 2.5mmHght 7PX11R Learn More about Molex mirror mezz connectors	Datasheet	410In Stock	Cut Tape Rp2.579.264 Rp2.322.053 Rp2.309.394 Rp2.266.832 View Reel Rp1.896.976 Rp1.897.160 Rp1.896.976 Quote	Min.: 1 Mult.: 1 : 200	Connectors	699 Position	1.3 mm (0.051 in)	11 Row	Solder	Vertical	2.5 mm	1 A	30 V	- 55 C	+ 105 C	Gold	Copper	Thermoplastic (TP)	204843	Reel, Cut Tape
Board to Board & Mezzanine Connectors 0.4 FLOATING BB Rec PKG 30ckt 204927-0301 Molex 1: Rp65.862 12.196In Stock	Mfr. Part No. 204927-0301 Mouser Part No 538-204927-0301	Molex	Board to Board & Mezzanine Connectors 0.4 FLOATING BB Rec PKG 30ckt Learn More about Molex fsb5 b2b connectors	Datasheet	12.196In Stock	Cut Tape Rp65.862 Rp55.955 Rp49.901 Rp47.516 Reel Rp37.242 View Rp44.581 Rp42.563 Rp41.829 Rp36.325 MouseReel Available	Min.: 1 Mult.: 1 : 3.000	Receptacles	30 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, MouseReel
Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 10 Pair 7 Row 292 CKT 0.76um Au Plt w/ Pegs 2091410002 Molex 1: Rp1.416.495 990In Stock 2.000Expected 29/10/2026	Mfr. Part No. 2091410002 Mouser Part No 538-2091410002	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Conn 2.5mm Conn Hgt Mnt 10 Pair 7 Row 292 CKT 0.76um Au Plt w/ Pegs Learn More about Molex mirror mezz connectors	Datasheet	990In Stock 2.000Expected 29/10/2026	Rp1.416.495 Rp1.204.048 Rp1.152.129 Rp1.113.602 View Rp1.106.447 Quote	Min.: 1 Mult.: 1															209141
Board to Board & Mezzanine Connectors Mirror Mezz Assy 2.5mm 15Px11R .76Au 209311-1115 Molex 1: Rp988.299 763In Stock	Mfr. Part No. 209311-1115 Mouser Part No 538-209311-1115	Molex	Board to Board & Mezzanine Connectors Mirror Mezz Assy 2.5mm 15Px11R .76Au Learn More about Molex mirror mezz connectors	Datasheet	763In Stock	Cut Tape Rp988.299 Rp865.748 Rp840.063 Rp825.387 Reel Rp825.387	Min.: 1 Mult.: 1 : 150		688 Position	2.5 mm (0.098 in)	11 Row		Vertical			30 V	- 55 C	+ 105 C	Gold			202828	Reel, Cut Tape
Board to Board & Mezzanine Connectors SeaRay Plug Assy 10x40x3.4 Tin Reel 45970-4315 Molex 1: Rp915.465 400In Stock	Mfr. Part No. 45970-4315 Mouser Part No 538-45970-4315	Molex	Board to Board & Mezzanine Connectors SeaRay Plug Assy 10x40x3.4 Tin Reel Learn More about Molex searay connectors	Datasheet	400In Stock	Cut Tape Rp915.465 Rp778.237 Rp747.966 Rp743.930 View Reel Rp620.095 Rp730.171 Rp620.095 Quote	Min.: 1 Mult.: 1 : 250	Headers	400 Position	1.27 mm (0.05 in)	10 Row	Solder	Vertical	3.5 mm	2.7 A	240 VAC	- 55 C	+ 125 C	Gold	Copper	Thermoplastic (TP)	45970	Reel, Cut Tape
Board to Board & Mezzanine Connectors 0.5 B/B Plug Hsg Ass y 50Ckt EmbsTp Pkg 501920-5001 Molex 1: Rp101.453 6.523In Stock	Mfr. Part No. 501920-5001 Mouser Part No 538-501920-5001	Molex	Board to Board & Mezzanine Connectors 0.5 B/B Plug Hsg Ass y 50Ckt EmbsTp Pkg Learn More about Molex high speed solutions	Datasheet	6.523In Stock	Cut Tape Rp101.453 Rp86.226 Rp80.906 Rp78.337 View Reel Rp62.560 Rp77.053 Rp74.485 Rp73.384 Rp67.513 Rp62.560 MouseReel Available	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF RECEPT 6CKT 503548-0622 Molex 1: Rp9.723 68.590In Stock	Mfr. Part No. 503548-0622 Mouser Part No 538-503548-0622	Molex	Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF RECEPT 6CKT Learn More about Molex slimstack	Datasheet	68.590In Stock	Cut Tape Rp9.723 Rp8.292 Rp7.412 Rp7.063 Reel Rp5.229 View Rp6.293 Rp5.999 Rp5.614 Rp4.972 MouseReel Available	Min.: 1 Mult.: 1 : 7.000	Receptacles	6 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, MouseReel
Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF PLUG 10CKT 503552-1022 Molex 1: Rp18.163 57.641In Stock	Mfr. Part No. 503552-1022 Mouser Part No 538-503552-1022	Molex	Board to Board & Mezzanine Connectors SLIMSTACK .4MM PITCH HRF PLUG 10CKT Learn More about Molex slimstack	Datasheet	57.641In Stock	Cut Tape Rp18.163 Rp15.227 Rp13.980 Rp13.319 View Reel Rp10.384 Rp12.292 Rp11.356 Rp10.898 Rp10.384 Rp10.384	Min.: 1 Mult.: 1 : 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
Board to Board & Mezzanine Connectors SlimStack .35mm Conn Plg 6Ckt Armor Nail 505070-0622 Molex 1: Rp6.054 112.369In Stock	Mfr. Part No. 505070-0622 Mouser Part No 538-505070-0622	Molex	Board to Board & Mezzanine Connectors SlimStack .35mm Conn Plg 6Ckt Armor Nail Learn More about Molex slimstack	Datasheet	112.369In Stock	Cut Tape Rp6.054 Rp5.082 Rp4.550 Rp4.330 View Reel Rp3.009 Rp3.871 Rp3.669 Rp3.394 Rp3.156 Rp3.009 MouseReel Available	Min.: 1 Mult.: 1 : 8.000	Headers	6 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 SLIMSTACK .35MM SSB RP PLG 10CKT ARMR NL 505070-1022 Molex 1: Rp12.108 64.791In Stock	Mfr. Part No. 505070-1022 Mouser Part No 538-505070-1022	Molex	Board to Board & Mezzanine Connectors SLIMSTACK .35MM SSB RP PLG 10CKT ARMR NL Learn More about Molex slimstack	Datasheet	64.791In Stock	Cut Tape Rp12.108 Rp10.476 Rp9.540 Rp8.641 View Reel Rp4.953 Rp7.889 Rp6.550 Rp6.128 Rp5.008 Rp4.953 MouseReel Available	Min.: 1 Mult.: 1 : 8.000	Headers	10 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 SlimStack .4mm Conn Plug 10Ckt 505551-1020 Molex 1: Rp16.695 38.607In Stock	Mfr. Part No. 505551-1020 Mouser Part No 538-505551-1020	Molex	Board to Board & Mezzanine Connectors SlimStack .4mm Conn Plug 10Ckt Learn More about Molex slimstack	Datasheet	38.607In Stock	Cut Tape Rp16.695 Rp14.255 Rp12.714 Rp12.108 View Reel Rp10.292 Rp11.521 Rp11.356 Rp10.971 Rp10.806 Rp10.292 MouseReel Available	Min.: 1 Mult.: 1 : 7.000	Headers	10 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)	505551	Reel, Cut Tape, MouseReel
Board to Board & Mezzanine Connectors 30 Ckt Receptacle J-leads & solder tab 51338-0374 Molex 1: Rp34.490 16.988In Stock	Mfr. Part No. 51338-0374 Mouser Part No 538-51338-0374	Molex	Board to Board & Mezzanine Connectors 30 Ckt Receptacle J-leads & solder tab Learn More about Molex high speed solutions	Datasheet	16.988In Stock	Cut Tape Rp34.490 Rp29.354 Rp26.235 Rp24.951 Reel Rp19.263 View Rp23.483 Rp22.382 Rp21.281 Rp18.896 MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Receptacles	30 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 Receptacle J-leads & solder tab 51338-0474 Molex 1: Rp38.527 19.052In Stock	Mfr. Part No. 51338-0474 Mouser Part No 538-51338-0474	Molex	Board to Board & Mezzanine Connectors 40 Ckt Receptacle J-leads & solder tab Learn More about Molex high speed solutions	Datasheet	19.052In Stock	Cut Tape Rp38.527 Rp32.839 Rp29.354 Rp27.886 Reel Rp21.098 View Rp26.235 Rp24.951 Rp23.483 Rp20.364 MouseReel Available	Min.: 1 Mult.: 1 : 2.500	Receptacles	40 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 24CKT DR VERT RECEPT SURFACE MNT 51338-2474 Molex 1: Rp50.452 11.334In Stock	Mfr. Part No. 51338-2474 Mouser Part No 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 Rp50.452 Rp42.930 Rp38.343 Rp36.509 Reel Rp28.803 View Rp34.307 Rp32.656 Rp31.372 Rp26.785 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 10CKT RECPT SMT DR 52465-1071 Molex 1: Rp28.987 33.526In Stock	Mfr. Part No. 52465-1071 Mouser Part No 538-52465-1071	Molex	Board to Board & Mezzanine Connectors 10CKT RECPT SMT DR	Datasheet	33.526In Stock	Cut Tape Rp28.987 Rp24.767 Rp22.199 Rp21.098 Reel Rp17.539 View Rp19.814 Rp18.896 Rp16.530 Rp15.943 MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Receptacles	10 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 20CKT BTB RECPT 52465-2071 Molex 1: Rp41.645 13.353In Stock	Mfr. Part No. 52465-2071 Mouser Part No 538-52465-2071	Molex	Board to Board & Mezzanine Connectors 20CKT BTB RECPT	Datasheet	13.353In Stock	Cut Tape Rp41.645 Rp35.591 Rp31.739 Rp30.271 Reel Rp24.584 View Rp28.253 Rp26.969 Rp23.116 Rp21.832 MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Receptacles	20 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 .635 RECEPTACLE SURFACE MNT 20 CKT 52885-0274 Molex 1: Rp55.221 11.935In Stock	Mfr. Part No. 52885-0274 Mouser Part No 538-52885-0274	Molex	Board to Board & Mezzanine Connectors .635 RECEPTACLE SURFACE MNT 20 CKT Learn More about Molex slimstack	Datasheet	11.935In Stock	Cut Tape Rp55.221 Rp47.700 Rp42.563 Rp40.545 Reel Rp33.390 View Rp37.976 Rp36.142 Rp31.555 Rp30.638 MouseReel Available	Min.: 1 Mult.: 1 : 1.000	Receptacles	20 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