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Amphenol 77311-122-20 — Pin Headers, Sockets & Housings

77311-122-20 BergStik Header – 20 Pos, 0.100" Pitch

MPN77311-122-20
Obsolete

Amphenol ICC (FCI) BergStik, 20-position single-row unshrouded header, 0.100" (2.54 mm) pitch, through-hole solder termination, gold or GXT™ mating finish, tin-lead post, UL94 V-0.

$3.2000Ref. price · indicative, final on quote
Amphenol 77311-122-20 datasheet (PDF)
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 supplier — new & surplus connector stock· Listing updated Jul 2026

Specifications

77311-122-20 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

77311-122-20 additional specifications
ParameterValue
ShroudingUnshrouded
TerminationSolder
Contact shapeSquare
Rows1
Pitch0.100\" (2.54mm)
Positions20
Contact finish - postTin-Lead
Contact length - post0.120\" (3.05mm)
Overall contact length0.525\" (13.34mm)
Contact finish - matingGold or Gold, GXT™
Contact length - mating0.305\" (7.75mm)
Contact finish thickness - post150.0µin (3.81µm)
Contact finish thickness - mating30.0µin (0.76µm)

Product details

BergStik Unshrouded Header – 20-Position Through-Hole

The 77311-122-20: The post finish is tin-lead at 150.0 µinch (3.81 µm), a legacy solder alloy that requires compatible wave-solder profiles.

Obsolete – Sourcing Through Surplus Channels

Amphenol ICC (FCI) lists this part as Obsolete. No factory orders are accepted; availability is limited to independent surplus and distributor inventory. No direct pin-compatible replacement is recorded from the original manufacturer.

The single-row layout keeps the board-edge footprint narrow, useful for dense parallel-board or cable-to-board connections.

Frequently asked questions

What is the direct replacement for 77311-122-20?

No official pin-compatible replacement is recorded from the original manufacturer.

Where can I buy 77311-122-20?

We source this obsolete part through independent distribution. Submit an RFQ with your target quantity; we confirm availability and current pricing at quote time. No stock-holding claim is made.