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Amphenol 77311-122-33LF — Pin Headers, Sockets & Housings
Amphenol

77311-122-33LF BERGSTIK® Header, 33 Pos, 0.100" Pitch, Gold

MPN77311-122-33LF
Active

Amphenol ICC (FCI) BERGSTIK® series, unshrouded male pin header, 33 circuits single row, 0.100" (2.54mm) pitch, through-hole solder termination, 3A per contact, gold mating finish, UL94 V-0.

$1.9367Ref. price · indicative, final on quote
77311-122-33LF 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

77311-122-33LF Technical 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
StyleBoard to Board
PackageBag
ShroudingUnshrouded
TerminationSolder
Contact shapeSquare
Rows1
Pitch0.100\" (2.54mm)
Positions33
Contact finish - postTin
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 - post78.7µin (2.00µm)
Contact finish thickness - mating30.0µin (0.76µm)

Product details

Why 33 Positions? A BOM-Specific Count

The 77311-122-33LF: Most 0.100" pitch single-row headers come in even counts (32, 34, 36). The 33-position variant fills a niche — likely a custom I/O count or a signal group that needs an odd number of lines. If your BOM calls for 33 circuits, this header matches without leaving an empty pin position.

The base product number is 77311; the suffix -33LF indicates the 33-position variant with lead-free (RoHS-compliant) plating on the solder tails.

The tin-plated solder tails are compatible with lead-free reflow profiles.

Frequently asked questions

Can 77311-122-33LF be used for board-to-board connections?

Yes — the connector style is Board to Board. It mates with a standard 0.100" pitch receptacle to connect two PCBs in a parallel or perpendicular stack.