What is a Thick Film Resistor?

Thick film resistor definition: It is  the resistor which is characterized by a thick film resistive layer over a ceramic base. As compared to the thin-film resistor, this resistor’s appearance is similar but their manufacturing procedure and properties are not the same. The thickness of the thick film resistor is 1000 times thicker than the thin-film resistor.

Thick film resistors are produced by applying a resistive film or paste, a mixture of glass and conductive materials, to a substrate. Thick film technology allows high resistance values to be printed on a cylindrical (Series SHV & JCP) or flat(Series MCP & SUP & RHP) substrate either covered entirely or in various patterns. They also can be printed in a serpentine design to eliminate inductance, which is preferred in applications with steady frequencies. Once applied, the resistance is adjusted using a laser or abrasive trimmer. 

Thick Film Resistor can not be changed similar to a variable resistors because its resistance value can be determined at manufacturing time itself. The classification if these resistors can be done based on the process of manufacturing & also materials utilized in their manufacturing like carbon,wire wound,thin-film,and thick film resistors.So this article discusses one of the types of fixed resistor namely thick film resistor--working and its applications.

1. Series MXP35 & LXP100 for high-frequency and pulse-loading applications.

2. Series RHP : this unique design allows you to use this elements in the following areas: variable speed drives, power supplies, control devices, telecommunications, robotics, motor controls and other switching devices.

3. Series SUP : Mainly used as a snubber resistor to compensate the C-R peaks in traction power supplies. Furthermore for speed drives, power supplies, control devices and robotics. The easy mounting fixture guarantees an auto-calibrated pressure to the cooling plate of about 300 N.

4. Series SHV & JCP : Power and voltage ratings are for continuous operation and have all been pretested for steady-state performance as well as momentary overload conditions.

Post time: Mar-01-2023