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Amphenol 77311-101-20 — Pin Headers, Sockets & Housings

77311-101-20 BERGSTIK Header – 20 Pos, 0.100" Pitch

MPN77311-101-20
Obsolete

Amphenol ICC (FCI) BERGSTIK® series, 20-position single-row unshrouded header, 0.100" (2.54mm) pitch, through-hole solder termination, male pin square contacts, 30 µinch gold mating finish, UL94 V-0 black thermoplastic housing.

$3.2000Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Jul 2026

Specifications

77311-101-20 key specifications
ParameterValue
SeriesBERGSTIK®
TypeMale Pin
MountingThrough Hole
Connector typeHeader
Fastening typePush-Pull
Contact materialPhosphor Bronze
Insulation colorBlack
Insulation height0.100\" (2.54mm)
Insulation materialThermoplastic
Material flammability ratingUL94 V-0
StyleBoard to Board
PackageBulk

All specifications

77311-101-20 additional specifications
ParameterValue
ShroudingUnshrouded
TerminationSolder
Contact shapeSquare
Rows1
Pitch0.100\" (2.54mm)
Positions20
Contact finish - postTin-Lead
Contact length - post0.095\" (2.41mm)
Overall contact length0.425\" (10.80mm)
Contact finish - matingGold or Gold, GXT™
Contact length - mating0.230\" (5.84mm)
Contact finish thickness - post150.0µin (3.81µm)
Contact finish thickness - mating30.0µin (0.76µm)

Product details

Obsolete – Sourcing Reality for This BERGSTIK Header

Board Fit – Pitch, Pin Length, and Footprint

Through-hole solder termination with tin-lead post plating – the post finish is 150 µinch (3.81µm) thick, compatible with standard wave-solder profiles.

Material and Compliance – UL94 V-0 Housing

Frequently asked questions

Is 77311-101-20 obsolete, and what is the replacement?

Yes, this part is marked Obsolete by Amphenol ICC (FCI). No official replacement part number has been published by the manufacturer. For a pin-compatible alternative, look for other BERGSTIK single-row 20-position unshrouded headers at 0.100" pitch – the closest functional match would be an active-series header with the same pin length and gold plating grade, but you will need to verify the exact footprint and mating half compatibility.

What is the pitch of 77311-101-20?

The pitch is 0.100" (2.54mm) – the standard spacing for DIP-compatible headers and receptacles.

Where can I buy 77311-101-20?

No stock-holding claim is made – each lot is sourced per order.