KTY sensors and possible alternatives

KTY temperature sensors are made of doped silicon having a positive temperature coefficient. They have similar platinum measuring resistors an approximately linear characteristic curve.

They are durable and cost-effective solutions for temperature measurement up to 150°C.


For the discontinued KTY83 and KTY84 we have a possible replacement!


The PTC-600 Series and the PTC-1000 Series have almost identical values as the discontinued KTY83 and KTY84 from NXP.

KTY81 Series


  • -55°C...150°C
  • max. Ø 4,8 x 5,2mm
  • SOD70 plastic case
  • Long-term stability
  • Radial design
  • Assembly on request

KTY82 Series


  • -55°C...150°C
  • max. B1,4 x H1,1 x L3,0mm
  • SOZ23 plastic case
  • Long-term stability
  • SMD design
KTY81 SerieKTY82 Serie

PTC Series assembled


  • Alternative to KTY83 & KTY84
  • Winding temperature sensor
  • -40°C to 150°C / 170°C
  • Standard wire: 500mm in AWG 24
  • PVDF shrink tube (Kynar)
  • Customisation

PTC-600


  • Alternative to KTY84
  • -40°C...170°C
  • R25: 618Ω ±1%...±5%
  • DO-35 glass body
  • axial design
  • PU: 500 in Bag
  • PU: 5.000 on tape
  • Assembly on request
KTY84 Ersatz Alternative

PTC-1000


  • Alternative to KTY83
  • -40°C...150°C
  • R25: 1000Ω ±1%...±5%
  • DO-35 glass body
  • axiale design
  • VPE: 500 in Bag
  • VPE: 5.000 on tape
  • Assembly on request
KTY84 Ersatz Alternative


α Therm


Alpha Therm GmbH - Your specialist for temperature-limiting

safety components, sensor elements or sensors

© 2018 Alpha Therm GmbH

v 2.4

Phone: +49 6202 / 575688 - 0

Home Products Contact About us Shop Imprint Data Protection

Temperature Protection

Temperature Protection

Overload Protection

Overload protection

Surge Protection


Surge protection

Temperature Sensors

Temperature Sensors

Temperature Controller

Temperature controller

Online shop

Download Product Overview

Mechanical Switches

Mechanical switches
Mechanische Schalter

Rectifier & Diodes

Rectifier