SS4/ST4 0.40mm Ultra-Fine-Pitch Connectors

Samtec SS4 / ST4 0.40mm Ultra-Fine-Pitch Connectors deliver up to 28Gbps performance and are available with up to 100 I/Os and stack heights ranging from 4mm to 6mm. These slim-footprint connectors are designed for board-to-board connections where space is at a premium. The connectors are manufactured on an ultra-fine 0.40mm pitch and come in a vertical configuration. These Razor Beam™ LP family connectors are engineered to save space on the X, Y, and Z axes. The SS4 sockets mate with the ST4 headers and vice-versa. Samtec SS4 / ST4 0.40mm Ultra-Fine-Pitch Connectors operate in a -55°C to +125°C temperature range and are ideal for applications such as 5G networking, test connectivity, artificial intelligence (AI) and machine learning, broadcast videos, medical, and more.

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Description Datasheet Availability Pricing (KRW) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Number of Positions
Pitch
Number of Rows
Termination Style
Mounting Angle
Stack Height
Current Rating
Voltage Rating
Maximum Data Rate
Minimum Operating Temperature
Maximum Operating Temperature
Contact Plating
Contact Material
Housing Material
Series
Packaging
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 811In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 700

Headers 100 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5.5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket 2,261In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,225

Sockets 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM SCKT 11,840In Stock
20,700Expected 11/16/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,150

Sockets 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM 4,264In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,150

Sockets 20 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM SCKT 1,319In Stock
Min.: 1
Mult.: 1
: 1,150

Sockets 30 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM SKT 3,882In Stock
3,450Expected 9/7/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,150

Sockets 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket 959In Stock
1,025Expected 9/21/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,025

Sockets 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket 4,012In Stock
4,100On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,025

Sockets 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM SCKT 2,498In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 800

Sockets 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket 1,688In Stock
1,350Expected 9/21/2026
MouseReel Available
Min.: 1
Mult.: 1
: 675

Sockets 100 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm, 5.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket 3,402In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 825

Sockets 100 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) SS4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM HDR 6,324In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,200

Headers 20 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM HDR 903In Stock
1,025Expected 9/7/2026
Min.: 1
Mult.: 1
: 1,025

Headers 20 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 2,341In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 850

Headers 20 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5.5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 2,274In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,125

Headers 30 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 810In Stock
Min.: 1
Mult.: 1
: 1,050

Headers 30 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO FINE PITCH HDR 5,593In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,125

Headers 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 776In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,025

Headers 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 2,231In Stock
Min.: 1
Mult.: 1
: 850

Headers 40 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5.5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM HDR 2,474In Stock
11,240On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,125

Headers 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 2,326In Stock
Min.: 1
Mult.: 1
: 1,025

Headers 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 1,455In Stock
1,700Expected 9/7/2026
MouseReel Available
Min.: 1
Mult.: 1
: 850

Headers 60 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5.5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40MM MICRO BLADE & BEAM HDR 885In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,200

Headers 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4 mm, 4.5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 1,941In Stock
Min.: 1
Mult.: 1
: 1,025

Headers 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 4.5 mm, 5 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape
Samtec Board to Board & Mezzanine Connectors 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header 1,330In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 850

Headers 80 Position 0.4 mm (0.016 in) 2 Row Solder Vertical 5.5 mm, 6 mm 1.6 A 155 VAC 28 Gbps - 55 C + 125 C Gold Phosphor Bronze Liquid Crystal Polymer (LCP) ST4 Reel, Cut Tape, MouseReel