Thick Film Resistors & Thermistors
Koartan offers a complete range of resistor, NTC- & PTC-thermistor blendable inks with resistivities from 50 mΩ/Sq up to 1 GΩ/Sq, depending on the application. Base materials include Silver Palladium and Ruthenium Oxide.
What are Thick Film Resistors and Thermistors?
Thick film resistors and thermistors are printable functional pastes used to create resistive and temperature‑dependent elements in thick film and hybrid microelectronic circuits.
Screen printed onto ceramic substrates and fired at high temperature, these materials form stable resistive layers used for current control, voltage division, temperature sensing, and thermal compensation in a wide range of electronic applications.
Key Features of Thick Film Resistors and Thermistors
- Resistor, NTC- & PTC-thermistor materials
- Suitable for low to high power applications
- AlN-compatible resistors that are CTE-matched
Thick Film Resistors & Thermistors Resources
Koartan Laser Trim Methods For NTC Thermistors
About Koartan Resistors and Thermistors
The 732X series is suitable for fabrication of discrete surface mount components, for integrating temperature sensing, impedance matching, current limiting or switching sub-circuitry, with large Beta constant & small hysteresis.
The 738X series offers a stacked NTC thermistor system designed to greatly enhance temperature sensitivity over standard “planar” systems. It also allows passive incremental laser trimming, providing electrical conduction through the thermistor in the Z direction.
The 74XX series of PTC thermistor pastes is designed primarily for temperature sensing and compensation applications. However, their ability to withstand high voltage and moderately elevated temperatures also makes them useful for self-regulating heater elements.
Both the 76XX & 79XX series of resistors are primarily used in the fabrication of high power IC and resistor networks. However, they can also be used for high-voltage surge protection circuitry in telecomms applications. The 79XX series offer a tight TCR.
The 7961 & 7981 series of silver-palladium resistors are specially designed for use with aluminium nitride (AlN), as they are CTE-matched to this difficult-to-adhere-to ceramic.
Key Characteristics of Thick Film Resistors and Thermistors
- Thick film resistors and thermistors are screen printed and fired to form durable resistive layers bonded to ceramic substrates.
- A wide range of resistance values and temperature coefficients can be achieved through material formulation and laser trimming.
- Thermistors provide a predictable change in resistance with temperature, supporting sensing and compensation functions.
- These materials are widely used due to their robustness, scalability, and suitability for integration into thick film circuits.
Got a Question About Thick Film Resistors & Thermistors?
Whether you’re developing a new product or refining an existing process, Inseto’s team of experts is here to help.
From selecting the right thick film resistor and thermistor to optimising your processes, we provide technical guidance, documentation, samples and on-site training to support your application needs.
Thick Film Resistors & Thermistors Product Range
Part# 732X
Type
NTC Thermistor
Description
100Ω/Sq to 100KΩ/sq, blendable, large Beta constant, small Hysteresis, fire at 850ºC
Part# 738X
Type
Laser-trimmable NTC Thermistor
Description
1Ω/Sq to 100KΩ/Sq, blendable, superior temperature sensitivity, fire at 850ºC
Part# 740X
Type
PTC Thermistor
Description
1Ω/Sq to 10KΩ/Sq, blendable, high TCR, linear temperature dependence, fire at 850ºC
Part# 76XX
Type
Resistor
Description
5Ω/Sq to 1GΩ/Sq, blendable, tight TCR, ideal for resistor networks, fire at 850ºC
Part# 79XX
Type
Pb-free Resistor
Description
50mΩ/Sq to 10Ω/Sq, blendable, tight TCR, ideal for high power resistor networks, fire at 850ºC
Part# 7961
Type
AgPd Resistor for AlN
Description
100mΩ/Sq to 3Ω/Sq series of power resistors, blendable, tight TCR, fire at 850ºC
Part# 7981
Type
AgPd Resistor for AlN
Description
100mΩ/Sq to 3Ω/Sq series of power resistors, blendable, low cost, fire at 850ºC
Knowledge Base Articles
Related Products
Further Information
Wiki – Thick Film Technology
Applications
Microelectronic Devices, Microwave Devices, Heating Elements, Printable Resistors & Thermistors
Industry Segments
Microelectronic / Hybrid Assembly, Photonic Devices, Microwave Electronics, Automotive Electronics, Wireless Telecommunications, Data Processing, Instrumentation, Military, Consumer Electronics, Industrial Electronics
Koartan Website
Region
Available throughout Europe from Inseto
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