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: $1.21
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

$1.21

$1.03

$0.975

$0.871

View

Reel

$0.548

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 5w, 2.54mm Pth Socket, SIL, SMT, Horiz, GF, LCP Natural, T+R

BG300-05-A-L-A
GCT
1: $0.84
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

$0.84

$0.713

$0.606

$0.541

Reel

$0.415

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 10w, 2.54mm Pitch Socket, DIL,SMT, Vert, No Peg, GF, Tube

BG120-10-A-0-N-D
GCT
1: $1.10
5,000In 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

5,000In Stock

$1.10

$1.01

$0.838

$0.776

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 3w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

BG306-03-A-1-0400-L-B
GCT
1: $0.77
4,361In 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

4,361In Stock

Cut Tape

$0.77

$0.657

$0.60

$0.559

$0.337

Reel

$0.337

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: $0.95
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

$0.95

$0.806

$0.685

$0.612

Reel

$0.475

$0.46

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 6w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

BG095-06-A-N-D
GCT
1: $0.55
5,195In 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

5,195In Stock

$0.55

$0.546

$0.499

$0.388

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 4w, 2.54mm Pitch Socket, SIL, TH, Vert, Dual Beam, GF, Tube

BG095-04-A-N-D
GCT
1: $0.52
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

$0.52

$0.456

$0.422

$0.363

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: $0.64
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

$0.64

$0.544

$0.463

$0.413

Reel

$0.295

View

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: $0.54
3,290In 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

3,290In Stock

$0.54

$0.534

$0.416

$0.385

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: $0.50
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

$0.50

$0.427

$0.363

$0.324

Reel

$0.27

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: $0.61
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

$0.61

$0.522

$0.444

$0.396

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: $0.59
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

$0.59

$0.51

$0.467

$0.42

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: $0.95
6,377In Stock

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

$0.95

$0.806

$0.773

$0.724

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: $0.50
6,594In 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

6,594In Stock

$0.50

$0.442

$0.404

$0.364

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: $0.60
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

$0.60

$0.523

$0.478

$0.431

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: $0.78
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

$0.78

$0.686

$0.628

$0.566

Reel

$0.428

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 6w, 2.54mm Pth Header, SIL, SMT, Horiz, GF, LCP Natural, T+R+C

BG301-06-A-0540-L-B
GCT
1: $0.90
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

$0.90

$0.757

$0.727

$0.68

Reel

$0.487

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: $0.41
11,090In Stock
9,000Expected 25/09/2026

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 25/09/2026

$0.41

$0.356

$0.313

$0.277

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: $0.21
3,140In Stock

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

$0.21

$0.083

$0.068

$0.061

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: $0.25
3,568In 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

3,568In Stock

$0.25

$0.215

$0.19

$0.165

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: $0.91
2,622In Stock
2,990Expected 25/09/2026

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

2,622In Stock

2,990Expected 25/09/2026

$0.91

$0.776

$0.745

$0.697

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: $0.51
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

$0.51

$0.447

$0.409

$0.369

Reel

$0.284

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: $0.58
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

$0.58

$0.512

$0.468

$0.422

Reel

$0.325

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: $0.96
1,391In Stock
4,200Expected 25/09/2026

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 25/09/2026

Cut Tape

$0.96

$0.816

$0.783

$0.733

Reel

$0.546

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: $0.54
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

$0.54

$0.468

$0.428

$0.386

Reel

$0.296

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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