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Amphenol 71991-311LF — Female Socket Headers

71991-311LF Amphenol ICC Dubox™ 22-Pin Female Socket Header

MPN71991-311LF
Active

Amphenol ICC (FCI) Dubox™ 71991-311LF, 22-position female socket header, 0.100" (2.54 mm) pitch, through-hole, gold-plated mating contacts, 11.04 mm mated stack height, RoHS, Active.

$4.1400Ref. price · indicative, final on quote
RoHSRoHS Compliant
SeriesDubox™
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 Aug 2026

Specifications

71991-311LF key specifications
ParameterValue
SeriesDubox™
TypeFemale Socket
MountingThrough Hole
Connector typeReceptacle, Bottom or Top Entry
Fastening typePush-Pull
Contact materialPhosphor Bronze
Insulation colorBlue
Insulation height0.275\" (6.99mm)
Insulation materialThermoplastic, Glass Filled
Mated stacking heights11.04mm
Material flammability ratingUL94 V-0
StyleBoard to Board

All specifications

71991-311LF additional specifications
ParameterValue
PackageTube
TerminationSolder
ApplicationsAutomotive, General Purpose, Industrial, Telecommunications
Contact shapeSquare
Rows2
Pitch0.100\" (2.54mm)
Positions22
Row spacing - mating0.100\" (2.54mm)
Contact finish - postTin
Contact length - post0.118\" (3.00mm)
Contact finish - matingGold
Contact finish thickness - post78.7µin (2.00µm)
Contact finish thickness - mating30.0µin (0.76µm)

Product details

What This 22-Position Dubox™ Receptacle Does

In a telecom or industrial card that gets swapped quarterly, that's a decade-plus of field service at the interface. The housing is glass-filled thermoplastic, rated UL94 V-0, and coloured blue for visual identification in a dense backplane. The push-pull fastening means it seats and unseats without tools — handy for field-swappable cards where you don't want a latch mechanism to snag.

Frequently asked questions

Where can I buy 71991-311LF and get current pricing?

Submit an RFQ for current availability and pricing — confirmed at quote time.

What is the pitch of 71991-311LF?

The mating pitch is 0.100" (2.54 mm), dual-row, with the same 0.100" row spacing.

What is the closest functional alternative to 71991-311LF?

The 24-position 71991-312LF is the nearest second-source within the same Dubox™ series — same pitch, stack height, plating, and housing. The 20-position 71991-310LF is also a direct sibling.