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TE Connectivity AMP Connectors 555799-1 — Modular / RJ Connectors

TE Connectivity 555799-1 RJ45 Jack, 8p8c, Cat3, Obsolete

MPN555799-1
Obsolete

TE Connectivity, RJ45 jack, 555799-1, 8p8c (8 position 8 contact), Cat3, vertical, through-hole, solder termination, gold 50.0µin contacts, board lock, keyed, unshielded, tray.

TE Connectivity AMP Connectors 555799-1 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

555799-1 specifications
ParameterValue
MountingThrough Hole
Connector typeJack
Operating temperature-40°C~85°C
LED colorDoes Not Contain LED
Contact materialPhosphor Bronze
Housing materialPolybutylene Terephthalate (PBT), Polyester
PackageTray
RatingsCat3
FeaturesBoard Lock, Keyed
ShieldingUnshielded
OrientationVertical
TerminationSolder
Tab directionUser Selectable
Contact finishGold
Rows1
Number of ports1
Contact finish thickness50.0µin (1.27µm)
Number of positions (Contacts)8p8c (RJ45, Ethernet)

Product details

The TE Connectivity 555799-1 is a vertical through-hole RJ45 jack with 8p8c (8 position 8 contact) layout, rated Cat3. The housing is polybutylene terephthalate (PBT) / polyester, and the part includes a board lock and keyed orientation to prevent mis-mating.

The Cat3 rating limits this jack to voice-grade and low-speed data applications. It is not rated for Cat5e.

No direct replacement is listed.

Mechanical Fit and Termination Checklist

This is a vertical through-hole jack with solder termination — it mounts perpendicular to the PCB and requires no right-angle routing. The board lock provides additional mechanical retention during reflow and against cable strain. The keyed housing ensures the plug inserts in one orientation only. It is unshielded and does not contain an LED.

Frequently asked questions

What is the replacement for 555799-1?

Buyers need to find an alternative part when the original is obsolete to avoid redesign.

Is 555799-1 obsolete?

Confirms lifecycle status so buyers know if they need to source from stock or find alternatives.

Where can I buy 555799-1?

Directs buyers to available inventory channels for this obsolete part.

What is the pinout of 555799-1?

Design engineers need pin mapping to ensure fit with PCB layout.

What are the specifications of 555799-1?

Essential for validating electrical and mechanical compatibility.

Is 555799-1 compatible with Cat5e?

Incorrect category rating may cause performance issues; buyers often ask this even though it's Cat3.