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.

PTC-600 Series


  • Alternative to KTY84
  • -40°C...150°C
  • Ø 2 x 4mm
  • In glass body
  • Long-term stability
  • Axial design
  • Bulk packing or Ammo packing
  • Assembly on request

PTC-1000 Series


  • Alternative to KTY83
  • -40°C...150°C
  • Ø 2 x 4mm
  • In glass body
  • Long-term stability
  • Axial design
  • Bulk packing or Ammo packing
  • Assembly on request

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
KTY84 Ersatz AlternativeKTY84 Ersatz AlternativeKTY81 SerieKTY82 Serie


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 sensor elements

Temperature Sensors

Temperature controller

Temperature controller

Online shop

Download product overview

Mechanical switches

Mechanical switches