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TE Connectivity AMP Connectors 3-5177986-5 — Mezzanine & Stacking Connectors

TE 3-5177986-5 Free Height Plug, 120 Pos, 0.80mm

MPN3-5177986-5
Active

TE Connectivity Free Height (FH) series, Plug, Center Strip Contacts, 120 positions, 2 rows, 0.031" (0.80mm) pitch, Surface Mount, Gold, 8.00µin contact finish, supports 8mm/12mm/16mm/20mm stacking heights.

$11.3900Ref. price · indicative, final on quote
RoHSROHS3 Compliant
SeriesFree Height (FH)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3-5177986-5 specifications
ParameterValue
SeriesFree Height (FH)
MountingSurface Mount
Connector typePlug, Center Strip Contacts
Height above board0.309\" (7.85mm)
Mated stacking heights8mm, 12mm, 16mm, 20mm
Pitch0.031\" (0.80mm)
PackageTape & Reel (TR) Cut Tape (CT)
FeaturesBoard Guide
Contact finishGold
Rows2
Positions120
Contact finish thickness8.00µin (0.203µm)

Product details

Free Height (FH) 120-Position Mezzanine Plug

That range covers common mezzanine gaps for processor boards, memory modules, and FPGA carrier cards. The ROHS3 compliance covers EU regulatory requirements for lead-free assembly.

Stacking Height Options vs. the 1-120532-2 Sibling

The 3-5177986-5 (0.80mm pitch, 120 positions) and the 1-120532-2 (1.00mm pitch, 84 positions) serve different density tiers within TE's mezzanine portfolio. The 0.80mm pitch of the 3-5177986-5 packs 60 contacts per row, compared to 42 per row on the 1.00mm-pitch sibling — a 43% increase in linear contact density. The 3-5177986-5 also supports taller stack heights (20mm max vs. 6.35mm on the 1-120532-2), making it the choice for wider board spacing. The 1-120532-2 carries a thicker gold finish (50.0µin vs. 8.00µin) and a pick-and-place feature, but its 84 positions and 1.00mm pitch limit its use to lower-density, higher-durability applications.

Frequently asked questions

What are the supported stacking heights for 3-5177986-5?

The 3-5177986-5 plug supports mated stacking heights of 8mm, 12mm, 16mm, and 20mm when paired with the matching Free Height receptacle. The plug itself has a fixed height above board of 0.309" (7.85mm); the receptacle variant determines the final stack height.

What is the mating connector for 3-5177986-5?

The 3-5177986-5 mates with the corresponding Free Height (FH) receptacle. The receptacle must have the same 0.80mm pitch and 120-position count; the stacking height (8, 12, 16, or 20mm) is determined by the receptacle's height above board.