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

BG301-05-A-0540-L-B
GCT
1: $0.78
1,195In Stock

Mfr. Part No.
BG301-05-A-0540-L-B

Mouser Part No
640-BG30105A0540LB

GCT

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

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Datasheet

1,195In Stock

Cut Tape

$0.78

$0.665

$0.566

$0.505

Reel

$0.457

View

Min.: 1
Mult.: 1

: 1,000

Headers

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)

BG301

Reel, Cut Tape

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

BG302-03-A-L-G
GCT
1: $0.48
2,189In Stock

Mfr. Part No.
BG302-03-A-L-G

Mouser Part No
640-BG302-03-A-L-G

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

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Datasheet

2,189In Stock

$0.48

$0.418

$0.366

$0.324

View

Min.: 1
Mult.: 1

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)

BG302

Bulk

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

BG302-04-A-L-G
GCT
1: $0.50
270In Stock

Mfr. Part No.
BG302-04-A-L-G

Mouser Part No
640-BG302-04-A-L-G

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

270In Stock

$0.50

$0.427

$0.405

$0.37

View

Min.: 1
Mult.: 1

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)

BG302

Bulk

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

BG302-06-A-L-G
GCT
1: $0.75
818In Stock

Mfr. Part No.
BG302-06-A-L-G

Mouser Part No
640-BG302-06-A-L-G

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Socket, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

818In Stock

$0.75

$0.661

$0.605

$0.545

View

Min.: 1
Mult.: 1

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)

BG302

Bulk

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

BG303-02-A-0300-L-G
GCT
1: $0.211
2,698In Stock

Mfr. Part No.
BG303-02-A-0300-L-G

Mouser Part No
640-BG30302A0300LG

GCT

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

Learn More

Datasheet

2,698In Stock

$0.211

$0.181

$0.154

$0.137

View

Min.: 1
Mult.: 1

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)

BG303

Bulk

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

BG303-03-A-0300-L-G
GCT
1: $0.24
3,257In Stock

Mfr. Part No.
BG303-03-A-0300-L-G

Mouser Part No
640-BG30303A0300LG

GCT

Board to Board & Mezzanine Connectors 3w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

3,257In Stock

$0.24

$0.205

$0.176

$0.156

View

Min.: 1
Mult.: 1

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)

BG303

Bulk

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

BG303-04-A-0300-L-G
GCT
1: $0.38
533In Stock
3,000Expected 2026/09/11

Mfr. Part No.
BG303-04-A-0300-L-G

Mouser Part No
640-BG30304A0300LG

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

533In Stock

3,000Expected 2026/09/11

$0.38

$0.334

$0.293

$0.259

View

Min.: 1
Mult.: 1

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)

BG303

Bulk

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

BG303-06-A-0300-L-G
GCT
1: $0.52
1,599In Stock

Mfr. Part No.
BG303-06-A-0300-L-G

Mouser Part No
640-BG30306A0300LG

GCT

Board to Board & Mezzanine Connectors 6w, 2.54mm Pth Header, SIL, TH, Horiz, GF, LCP Natural, Box

Learn More

Datasheet

1,599In Stock

$0.52

$0.452

$0.397

$0.351

View

Min.: 1
Mult.: 1

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)

BG303

Bulk

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Hdr, U Shaped, Single Insul, LCP Natural, Box

BG304-04-A-0500-L-G
GCT
1: $0.45
308In Stock

Mfr. Part No.
BG304-04-A-0500-L-G

Mouser Part No
640-BG30404A0500LG

GCT

Board to Board & Mezzanine Connectors 4w, 2.54mm Pth Hdr, U Shaped, Single Insul, LCP Natural, Box

Learn More

Datasheet

308In Stock

$0.45

$0.391

$0.344

$0.304

View

Min.: 1
Mult.: 1

Headers

4 Position

2.54 mm (0.1 in)

2 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Brass

Liquid Crystal Polymer (LCP)

BG304

Bulk

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, SMT, Vert, R2 GF, LCP Natural, Box

BG306-02-A-2-0400-L-G
GCT
1: $0.73
2,692In Stock

Mfr. Part No.
BG306-02-A-2-0400-L-G

Mouser Part No
640-BG30602A20400LG

GCT

Board to Board & Mezzanine Connectors 2w, 2.54mm Pth Socket, SIL, SMT, Vert, R2 GF, LCP Natural, Box

Learn More

Datasheet

2,692In Stock

$0.73

$0.64

$0.584

$0.527

View

Min.: 1
Mult.: 1

Sockets

2 Position

2.54 mm (0.1 in)

1 Row

Solder

Vertical

3 A

- 40 C

+ 105 C

Gold

Brass

Liquid Crystal Polymer (LCP)

BG306

Bulk

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

BG306-05-A-1-0400-L-B
GCT
1: $1.17
905In Stock

Mfr. Part No.
BG306-05-A-1-0400-L-B

Mouser Part No
640-BG30605A10400LB

GCT

Board to Board & Mezzanine Connectors 5w, 2.54mm Pitch Socket, SIL, SMT, Vert, R1, GF, LCP Nat, T+R+C

Learn More

Datasheet

905In Stock

Cut Tape

$1.17

$0.991

$0.951

$0.89

Reel

$0.647

View

Min.: 1
Mult.: 1

: 1,200

Sockets

5 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 Header, SIL, TH, Horiz, GF, LCP Natural, Box

BG303-05-A-0300-L-G
GCT
1: $0.39
Non-Stocked Lead-Time 8 Weeks

Mfr. Part No.
BG303-05-A-0300-L-G

Mouser Part No
640-BG30305A0300LG

GCT

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

Learn More

Datasheet

Non-Stocked Lead-Time 8 Weeks

$0.39

$0.329

$0.28

$0.25

View

Min.: 1
Mult.: 1

Headers

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)

BG303

Bulk

2.54mm B2B SIL Headers & Sockets

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