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Amphenol 77311-118-21LF — Pin Headers

77311-118-21LF Amphenol ICC BERGSTIK® 21-Pin Header

MPN77311-118-21LF
Active

Amphenol ICC (FCI) BERGSTIK®, 21-position unshrouded header, 0.100" (2.54 mm) pitch, through-hole solder termination, 3 A per contact, 30 µinch gold mating finish, UL94 V-0 thermoplastic, RoHS compliant.

$2.0800Ref. price · indicative, final on quote
Amphenol 77311-118-21LF datasheet (PDF)
RoHSRoHS Compliant
SeriesBERGSTIK®
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

77311-118-21LF key specifications
ParameterValue
SeriesBERGSTIK®
TypeMale Pin
MountingThrough Hole
Connector typeHeader
Fastening typePush-Pull
Current rating3A per Contact
Operating temperature-65°C~125°C
Contact materialPhosphor Bronze
Insulation colorBlack
Insulation height0.100\" (2.54mm)
Insulation materialThermoplastic
Material flammability ratingUL94 V-0

All specifications

77311-118-21LF additional specifications
ParameterValue
StyleBoard to Board
PackageBulk
ShroudingUnshrouded
TerminationSolder
Contact shapeSquare
Rows1
Pitch0.100\" (2.54mm)
Positions21
Contact finish - postTin
Contact length - post0.120\" (3.05mm)
Overall contact length0.450\" (11.43mm)
Contact finish - matingGold or Gold, GXT™
Contact length - mating0.230\" (5.84mm)
Contact finish thickness - post78.7µin (2.00µm)
Contact finish thickness - mating30.0µin (0.76µm)

Product details

21-Position Unshrouded Header, 0.100" Pitch

The 77311-118-21LF: The 21 circuits are fully loaded, so the BOM position count matches the pin count exactly. Operating temperature spans -65°C to 125°C, covering industrial cabinet, automotive underhood, and outdoor telecom environments where the connector sees thermal cycling.

RoHS compliant per.

In a vibration-prone application, a secondary retention method (wire tie or potting) is worth considering. The square pin profile (0.025" nominal) mates with standard box-type or tuning-fork receptacles.

Frequently asked questions

What is the closest pin-compatible alternative to 77311-118-21LF in the BERGSTIK® series?

The BERGSTIK® series includes many single-row, 0.100" pitch headers with the same contact finish and material — a different position count or post length would require a board layout change. Confirm the BOM position count and mating half before substituting.

Is 77311-118-21LF RoHS compliant?

Yes, it is RoHS compliant per the manufacturer's listing. The housing material is UL94 V-0 rated thermoplastic.