Board to Board & Mezzanine Connectors

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2.54mm B2B SIL Headers & Sockets

GCT 2.54mm Board-to-Board (B2B) SIL Headers and Sockets feature a 3A current rating, 20mΩ maximum contact resistance, and up to 5000MΩ insulation resistance. These sockets and headers offer various designs that can consist of up to 80 contacts, through-hole or surface-mount construction, and a 0.64mm square pin size. These GCT sockets are available with a right-angle, U-shaped, or straight orientation, while the headers are available in both right-angle and straight orientations.

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Part #

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

BG306-06-A-1-0400-L-B
GCT
1: CHF 0.959
11’862In Stock

Mfr. Part No.
BG306-06-A-1-0400-L-B

Mouser Part No
640-BG30606A10400LB

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

Learn More

Datasheet

11’862In Stock

Cut Tape

CHF 0.959

CHF 0.817

CHF 0.774

CHF 0.691

View

Reel

CHF 0.467

Min.: 1
Mult.: 1

: 1’200

Sockets

6 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Brass

Liquid Crystal Polymer (LCP)

BG306

Reel, Cut Tape

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

BG095-06-A-N-D
GCT
1: CHF 0.436
5’191In Stock

Mfr. Part No.
BG095-06-A-N-D

Mouser Part No
640-BG095-06-A-N-D

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

Learn More

Datasheet

5’191In Stock

CHF 0.436

CHF 0.433

CHF 0.396

CHF 0.308

View

Min.: 1
Mult.: 1

Headers

6 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG095

Tube

Board to Board & Mezzanine Connectors 3w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

BG306-03-A-1-0400-L-B
GCT
1: CHF 0.61
4’351In Stock

Mfr. Part No.
BG306-03-A-1-0400-L-B

Mouser Part No
640-BG30603A10400LB

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

Learn More

Datasheet

4’351In Stock

Cut Tape

CHF 0.61

CHF 0.521

CHF 0.476

CHF 0.443

CHF 0.288

Reel

CHF 0.288

Min.: 1
Mult.: 1

: 1’200

Sockets

3 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Brass

Liquid Crystal Polymer (LCP)

BG306

Reel, Cut Tape

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

BG306-04-A-1-0400-L-B
GCT
1: CHF 0.753
5’575In Stock

Mfr. Part No.
BG306-04-A-1-0400-L-B

Mouser Part No
640-BG30604A10400LB

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

Learn More

Datasheet

5’575In Stock

Cut Tape

CHF 0.753

CHF 0.639

CHF 0.543

CHF 0.542

Reel

CHF 0.377

View

Min.: 1
Mult.: 1

: 1’200

Sockets

4 Position

2.54 mm (0.1 in)

1 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Brass

Liquid Crystal Polymer (LCP)

BG306

Reel, Cut Tape

Board to Board & Mezzanine Connectors 10w, 2.54mm Pitch Socket, DIL,SMT, Vert, No Peg, GF, Tube

BG120-10-A-0-N-D
GCT
1: CHF 0.872
4’995In Stock

Mfr. Part No.
BG120-10-A-0-N-D

Mouser Part No
640-BG120-10-A-0-N-D

GCT

Board to Board & Mezzanine Connectors 10w, 2.54mm Pitch Socket, DIL,SMT, Vert, No Peg, GF, Tube

Learn More

Datasheet

4’995In Stock

CHF 0.872

CHF 0.801

CHF 0.664

CHF 0.614

View

Min.: 1
Mult.: 1

Sockets

10 Position

2.54 mm (0.1 in)

2 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG120

Tube

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

BG095-04-A-N-D
GCT
1: CHF 0.412
4’357In Stock

Mfr. Part No.
BG095-04-A-N-D

Mouser Part No
640-BG095-04-A-N-D

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

Learn More

Datasheet

4’357In Stock

CHF 0.412

CHF 0.361

CHF 0.335

CHF 0.288

View

Min.: 1
Mult.: 1

Headers

4 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG095

Tube

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

BG301-04-A-0540-L-B
GCT
1: CHF 0.507
3’390In Stock

Mfr. Part No.
BG301-04-A-0540-L-B

Mouser Part No
640-BG30104A0540LB

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

Learn More

Datasheet

3’390In Stock

Cut Tape

CHF 0.507

CHF 0.431

CHF 0.367

CHF 0.327

Reel

CHF 0.234

Min.: 1
Mult.: 1

: 1’000

Headers

4 Position

2.54 mm (0.1 in)

1 Row

Solder

Right Angle

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG301

Reel, Cut Tape

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

BG095-05-A-N-D
GCT
1: CHF 0.428
3’230In Stock

Mfr. Part No.
BG095-05-A-N-D

Mouser Part No
640-BG095-05-A-N-D

GCT

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

Learn More

Datasheet

3’230In Stock

CHF 0.428

CHF 0.423

CHF 0.329

CHF 0.303

View

Min.: 1
Mult.: 1

Headers

5 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG095

Tube

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

BG301-03-A-0540-L-B
GCT
1: CHF 0.396
3’762In Stock

Mfr. Part No.
BG301-03-A-0540-L-B

Mouser Part No
640-BG30103A0540LB

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

Learn More

Datasheet

3’762In Stock

Cut Tape

CHF 0.396

CHF 0.338

CHF 0.288

CHF 0.257

Reel

CHF 0.214

View

Min.: 1
Mult.: 1

: 1’000

Headers

3 Position

2.54 mm (0.1 in)

1 Row

Solder

Right Angle

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG301

Reel, Cut Tape

Board to Board & Mezzanine Connectors 5w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

BG302-05-A-L-G
GCT
1: CHF 0.484
3’342In Stock

Mfr. Part No.
BG302-05-A-L-G

Mouser Part No
640-BG302-05-A-L-G

GCT

Board to Board & Mezzanine Connectors 5w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

3’342In Stock

CHF 0.484

CHF 0.414

CHF 0.352

CHF 0.314

View

Min.: 1
Mult.: 1

Sockets

5 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG302

Bulk

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

BG125-04-A-1-1-0440-N-D
GCT
1: CHF 0.467
59’478In Stock

Mfr. Part No.
BG125-04-A-1-1-0440-N-D

Mouser Part No
640-BG12504A110440ND

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

Learn More

Datasheet

59’478In Stock

CHF 0.467

CHF 0.405

CHF 0.371

CHF 0.333

View

Min.: 1
Mult.: 1

Sockets

4 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG125

Tube

Board to Board & Mezzanine Connectors 8w, 2.54mm Pitch Socket, DIL,SMT, Vert, No Peg, GF, Tube

BG120-08-A-0-N-D
GCT
1: CHF 0.753
6’377In Stock
4’648Expected 10/14/2026

Mfr. Part No.
BG120-08-A-0-N-D

Mouser Part No
640-BG120-08-A-0-N-D

GCT

Board to Board & Mezzanine Connectors 8w, 2.54mm Pitch Socket, DIL,SMT, Vert, No Peg, GF, Tube

Learn More

Datasheet

6’377In Stock

4’648Expected 10/14/2026

CHF 0.753

CHF 0.639

CHF 0.613

CHF 0.574

View

Min.: 1
Mult.: 1

Sockets

8 Position

2.54 mm (0.1 in)

2 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG120

Tube

Board to Board & Mezzanine Connectors 3w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

BG125-03-A-1-1-0440-N-D
GCT
1: CHF 0.396
6’574In Stock

Mfr. Part No.
BG125-03-A-1-1-0440-N-D

Mouser Part No
640-BG12503A110440ND

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

Learn More

Datasheet

6’574In Stock

CHF 0.396

CHF 0.35

CHF 0.32

CHF 0.289

View

Min.: 1
Mult.: 1

Sockets

3 Position

2.54 mm (0.1 in)

1 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG125

Tube

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

BG125-05-A-1-1-0440-N-D
GCT
1: CHF 0.476
6’693In Stock

Mfr. Part No.
BG125-05-A-1-1-0440-N-D

Mouser Part No
640-BG12505A110440ND

GCT

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent, R1, GF, Tube

Learn More

Datasheet

6’693In Stock

CHF 0.476

CHF 0.415

CHF 0.379

CHF 0.342

View

Min.: 1
Mult.: 1

Sockets

5 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG125

Tube

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-04-A-L-A
GCT
1: CHF 0.619
5’471In Stock

Mfr. Part No.
BG300-04-A-L-A

Mouser Part No
640-BG300-04-A-L-A

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

Learn More

Datasheet

5’471In Stock

Cut Tape

CHF 0.619

CHF 0.544

CHF 0.498

CHF 0.449

Reel

CHF 0.339

View

Min.: 1
Mult.: 1

: 1’400

Sockets

4 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG300

Reel, Cut Tape

Board to Board & Mezzanine Connectors 5w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-05-A-L-A
GCT
1: CHF 0.666
8’778In Stock

Mfr. Part No.
BG300-05-A-L-A

Mouser Part No
640-BG300-05-A-L-A

GCT

Board to Board & Mezzanine Connectors 5w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

Learn More

Datasheet

8’778In Stock

Cut Tape

CHF 0.666

CHF 0.565

CHF 0.48

CHF 0.479

Reel

CHF 0.329

View

Min.: 1
Mult.: 1

: 1’400

Sockets

5 Position

2.54 mm (0.1 in)

1 Row

Solder

Right Angle

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG300

Reel, Cut Tape

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

BG301-06-A-0540-L-B
GCT
1: CHF 0.714
3’996In Stock

Mfr. Part No.
BG301-06-A-0540-L-B

Mouser Part No
640-BG30106A0540LB

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

Learn More

Datasheet

3’996In Stock

Cut Tape

CHF 0.714

CHF 0.60

CHF 0.576

CHF 0.539

Reel

CHF 0.386

View

MouseReel Available

Min.: 1
Mult.: 1

: 1’000

Headers

6 Position

2.54 mm (0.1 in)

1 Row

Solder

Right Angle

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG301

Reel, Cut Tape, MouseReel

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

BG302-02-A-L-G
GCT
1: CHF 0.325
11’090In Stock
9’000Expected 9/25/2026

Mfr. Part No.
BG302-02-A-L-G

Mouser Part No
640-BG302-02-A-L-G

GCT

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

11’090In Stock

9’000Expected 9/25/2026

CHF 0.325

CHF 0.282

CHF 0.248

CHF 0.219

View

Min.: 1
Mult.: 1

Sockets

2 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG302

Bulk

Board to Board & Mezzanine Connectors 2w, 2.54mm Pitch Pin Hdr, SIL, TH, Vert, GF, Box

BG030-02-A-0450-0300-N-G
GCT
1: CHF 0.167
3’140In Stock
3’000Expected 10/14/2026

Mfr. Part No.
BG030-02-A-0450-0300-N-G

Mouser Part No
640-BG032A045003NG

GCT

Board to Board & Mezzanine Connectors 2w, 2.54mm Pitch Pin Hdr, SIL, TH, Vert, GF, Box

Learn More

Datasheet

3’140In Stock

3’000Expected 10/14/2026

CHF 0.167

CHF 0.065

CHF 0.053

CHF 0.048

View

Min.: 1
Mult.: 1

Headers

2 Position

2.54 mm (0.1 in)

1 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Nylon

BG030

Bulk

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Pin Hdr, SIL, TH, Vert, GF, Box

BG030-06-A-0450-0300-N-G
GCT
1: CHF 0.198
3’546In Stock

Mfr. Part No.
BG030-06-A-0450-0300-N-G

Mouser Part No
640-BG036A045003NG

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pitch Pin Hdr, SIL, TH, Vert, GF, Box

Learn More

Datasheet

3’546In Stock

CHF 0.198

CHF 0.171

CHF 0.15

CHF 0.131

View

Min.: 1
Mult.: 1

Headers

6 Position

2.54 mm (0.1 in)

1 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Nylon

BG030

Bulk

Board to Board & Mezzanine Connectors 10w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent,R1, GF, Tube

BG125-10-A-1-1-0440-N-D
GCT
1: CHF 0.722
2’502In Stock
2’990Expected 9/25/2026

Mfr. Part No.
BG125-10-A-1-1-0440-N-D

Mouser Part No
640-BG12510A110440ND

GCT

Board to Board & Mezzanine Connectors 10w, 2.54mm Pitch Socket, SIL, SMT, Vert, D/Ent,R1, GF, Tube

Learn More

Datasheet

2’502In Stock

2’990Expected 9/25/2026

CHF 0.722

CHF 0.615

CHF 0.591

CHF 0.552

View

Min.: 1
Mult.: 1

Sockets

10 Position

2.54 mm (0.1 in)

1 Row

Solder

Straight

3 A

- 40 C

+ 105 C

Gold

Phosphor Bronze

Nylon

BG125

Tube

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-02-A-L-A
GCT
1: CHF 0.405
4’240In Stock

Mfr. Part No.
BG300-02-A-L-A

Mouser Part No
640-BG300-02-A-L-A

GCT

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

Learn More

Datasheet

4’240In Stock

Cut Tape

CHF 0.405

CHF 0.354

CHF 0.325

CHF 0.292

Reel

CHF 0.225

View

Min.: 1
Mult.: 1

: 1’400

Sockets

2 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG300

Reel, Cut Tape

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-03-A-L-A
GCT
1: CHF 0.46
2’220In Stock

Mfr. Part No.
BG300-03-A-L-A

Mouser Part No
640-BG300-03-A-L-A

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

Learn More

Datasheet

2’220In Stock

Cut Tape

CHF 0.46

CHF 0.406

CHF 0.371

CHF 0.335

Reel

CHF 0.258

View

Min.: 1
Mult.: 1

: 1’400

Sockets

3 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG300

Reel, Cut Tape

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-06-A-L-A
GCT
1: CHF 0.762
1’391In Stock
4’200Expected 9/25/2026

Mfr. Part No.
BG300-06-A-L-A

Mouser Part No
640-BG300-06-A-L-A

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

Learn More

Datasheet

1’391In Stock

4’200Expected 9/25/2026

Cut Tape

CHF 0.762

CHF 0.647

CHF 0.621

CHF 0.581

Reel

CHF 0.433

View

Min.: 1
Mult.: 1

: 1’400

Sockets

6 Position

2.54 mm (0.1 in)

1 Row

Solder

Horizontal

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG300

Reel, Cut Tape

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

BG301-02-A-0540-L-B
GCT
1: CHF 0.428
3’000In Stock

Mfr. Part No.
BG301-02-A-0540-L-B

Mouser Part No
640-BG30102A0540LB

GCT

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

Learn More

Datasheet

3’000In Stock

Cut Tape

CHF 0.428

CHF 0.371

CHF 0.339

CHF 0.306

Reel

CHF 0.235

View

Min.: 1
Mult.: 1

: 1’000

Headers

2 Position

2.54 mm (0.1 in)

1 Row

Solder

Right Angle

3 A

- 40 C

+ 105 C

Gold

Copper Alloy

Liquid Crystal Polymer (LCP)

BG301

Reel, Cut Tape

2.54mm B2B SIL Headers & Sockets

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