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71991-309LF — Amphenol product photo
Amphenol

71991-309LF Dubox™ 18-Position Receptacle, 0.100" Pitch

MPN71991-309LF
Active

Amphenol ICC (FCI) Dubox™ series, 18-position dual-row receptacle, 0.100" (2.54mm) pitch, through-hole solder termination, 30.0µin gold on mating contacts, 11.04mm mated stack height, UL94 V-0 thermoplastic housing, blue insulation.

$2.6900Ref. price · indicative, final on quote
71991-309LF datasheet
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
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Specifications

71991-309LF Technical Specifications
ParameterValue
SeriesDubox™
GenderFemale Socket
Mounting typeThrough 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
PackageTube
TerminationSolder
ApplicationsAutomotive, General Purpose, Industrial, Telecommunications
Contact shapeSquare
Rows2
Pitch0.100\" (2.54mm)
Positions18
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

Dubox™ Dual-Row Receptacle for Board-to-Board Stacking

The 71991-309LF: The push-pull fastening type allows tool-less unmating, which is typical for card-edge or mezzanine connectors where access is limited.

Board Fit and Stack Height Budget

This receptacle accepts a mating header with 0.100" pitch and 0.025" square pins. The 0.118" (3.00mm) solder tail length suits standard 1.6mm-thick PCBs — the tail protrudes below the board for wave-solder fillet formation. The 11.04mm mated stack height is a fixed value — it determines the spacing between the two PCBs in a mezzanine configuration. For a given enclosure z-height, subtract the board thicknesses and component keep-outs to verify clearance. The bottom or top entry style means the receptacle can be mounted on either side of the board, which helps with board orientation in multi-card cages.

It is supplied in tube packaging. The part is RoHS-compliant per the manufacturer's standard declaration.

Frequently asked questions

What is the pitch of 71991-309LF?

This is the standard Dubox™ pitch and matches the footprint of any 0.100" square-pin header.

Is 71991-309LF RoHS compliant?

Yes, the 71991-309LF is RoHS-compliant per Amphenol ICC (FCI) standard manufacturing. No separate RoHS certificate is required for BOM entry.