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Kycon, Inc. STX-2500-3NTR — Audio Connectors

Kycon STX-2500-3NTR 2.5mm Phone Jack, 3 Conductor, SMT

MPNSTX-2500-3NTR
Active

Kycon STX-2500 series phone jack, order code STX-2500-3NTR, female, 3 conductors (TRS), 2.50mm industry recognized mating diameter, silver-plated contacts, surface-mount right-angle, solder termination, unshielded, black LCP housing.

$1.2700Ref. price · indicative, final on quote
RoHSROHS3 Compliant
SeriesSTX-2500
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STX-2500-3NTR specifications
ParameterValue
SeriesSTX-2500
MountingSurface Mount, Right Angle
Connector typePhone Jack
Operating temperature-25°C ~ 80°C
Body colorBlack
Contact materialCopper Alloy
Housing materialLiquid Crystal Polymer (LCP)
Contact material - platingSilver
GenderFemale
PackageTape & Reel (TR) Cut Tape (CT)
FeaturesBoard Guide
ShieldingUnshielded
TerminationSolder
Signal linesStereo (3 Conductor, TRS)
Actual diameter0.102\" (2.60mm)
Internal switchDoes Not Contain Switch
Number of positions (Contacts)3 Conductors, 3 Contacts
Industry recognized mating diameter2.50mm (0.094\", 3/32\", Sub Mini, Miniature) - Headphone

Product details

2.50 mm stereo jack, SMT right-angle

The STX-2500-3NTR is a 3-conductor (TRS) female phone jack from Kycon's STX-2500 series, accepting a 2.50 mm industry-recognized mating plug. Silver-plated copper alloy contacts terminate via solder to the board; the LCP housing includes a board guide for alignment during reflow.

Series position: 3-conductor vs 5-contact variant

Within the STX family, the STX-2500-3NTR (3 conductors, no internal switch) shares its 2.50 mm mating diameter and SMT right-angle footprint with the STX-2550-5NTR, which adds two internal switches and five contacts — the board layout and plug interface are common, but the switch contacts change the circuit function. The through-hole STX-2000-3N uses a PBT housing and bulk packaging, so the SMT reflow profile and tape-and-reel feed of the STX-2500-3NTR do not cross directly.

Frequently asked questions

How do I get current pricing and availability for STX-2500-3NTR?

The STX-2500-3NTR is available in Tape & Reel (TR) and Cut Tape (CT) packaging.

Will STX-2500-3NTR drop into a panel that was specified around STX-2550-5NTR without rewiring?

The STX-2500-3NTR and STX-2550-5NTR share the same 2.50 mm mating diameter, SMT right-angle footprint, and board guide feature, so the PCB layout and plug interface are common. However, the STX-2550-5NTR adds two internal switches and five contacts — the circuit function differs, so a direct swap requires verifying the switch logic in the original design.