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SS4-40-3.50-L-D-K-TR

SS4-40-3.50-L-D-K-TR

Samtec Inc.
80 Position Connector Socket, Outer Shroud Contacts Surface Mount Gold
Active1,337 in stock
Datasheet Digi-Key Compare Prices

Overview

The SS4-40-3.50-L-D-K-TR is a high-density, ultra-fine pitch board-to-board socket from Samtec. It features 80 positions on a 0.40mm (0.016 inch) pitch, designed for compact electronic assemblies requiring a low profile and reliable surface mount connectivity. This socket includes an outer shroud for contact protection and a Kapton pick-and-place pad for automated assembly.

Why Choose This Part

The 0.40mm pitch allows for an extremely high pin density of 80 positions within a compact 26.46mm footprint. With 10 microinches of selective gold plating and an outer shroud, it ensures reliable signal integrity and mechanical protection for the phosphor bronze contacts. The series supports multiple mated stacking heights (4.5mm to 6mm), providing flexibility for different mechanical housing requirements.

Applications

High-Density Mezzanine Cards
Ideal for stacking daughterboards onto motherboards in space-constrained mobile or portable electronics.
Miniature Camera Modules
Used to interface high-resolution imaging sensors with main processing boards where PCB real estate is at a premium.
Wearable Device Interconnects
Provides a reliable multi-pin connection in small-form-factor designs like smartwatches and medical monitors.
Display Interfaces
Acts as the primary connector for high-pin-count flat panel displays or touch interface assemblies.

Key Specifications

Pitch 0.016" (0.40mm)
Features Pick and Place
Mounting Type Surface Mount
Connector Type Socket, Outer Shroud Contacts
Contact Finish Gold
Number of Rows 2
Height Above Board 0.132" (3.35mm)
Number of Positions 80
Mated Stacking Heights 4.5mm, 5.5mm, 6mm
Contact Finish Thickness 10.0uin (0.25um)

Also Consider

ST4-40-1.00-L-D-P-TR Samtec Inc. - Used as the mating terminal header to achieve the 4.5mm mated stack height specified in the datasheet.
Hirose DF40 Series Hirose Electric Co Ltd - An alternative 0.4mm pitch, 80-position connector with a similar low-profile stacking height and high density.

Categories

Connectors & Cables > Pin Headers & Sockets