RTS-01 Series Heatsinkable Power Thick Film Resistors
Thick film resistive element on 2mm stainless steel substrate
100W rated power on heatsink
Resistance range 0.1Ω to 1MΩ (E24 series values)
Very low inductance — suitable for high-frequency circuits
SOT-227 housing compatible for quick heatsink installation
Multiple terminal types: solder fields, soldered wires, faston connectors and screw terminals
Tolerance options ±5% and ±10%
TCR ±100ppm/°C
Dielectric layer breakdown voltage greater than 2.5kV
What are the RTS-01 Series Heatsinkable Power Thick Film Resistors?
The RTS-01 is a high-power thick film resistor built on a 2mm stainless steel substrate, combining the thermal robustness of a metal-backed construction with the low-inductance characteristics of thick film technology. Rated at 100W continuous power when mounted on a heatsink, the RTS-01 is designed for applications that require compact, high-power-density resistors capable of withstanding repetitive transient overloads without degradation. The stainless steel substrate provides mechanical rigidity and efficient heat spreading, enabling direct thermal coupling to an external heatsink through the flat mounting face.
The resistance range spans 0.1Ω to 1MΩ using E24 preferred values, covering the impedance requirements of a wide variety of industrial power and control circuits. Tolerance options of ±5% and ±10% are available across the range, with a temperature coefficient of resistance (TCR) of ±100ppm/°C. The maximum element surface temperature is 400°C, though this reduces to 170°C for variants fitted with soldered connectors or wires, reflecting the thermal limits of the solder connections rather than the resistive element itself. Dielectric layer breakdown voltage exceeds 2.5kV, confirming suitability for industrial line-voltage environments.
A defining feature of the RTS-01 is its very low inductance, which results from the thick film construction and the planar geometry of the resistive element. This makes the series suitable for high-frequency circuits where wirewound alternatives would introduce impedance errors due to inductive reactance. The SOT-227 footprint compatibility allows the RTS-01 to be installed in standard heatsink mounting positions alongside power semiconductors, simplifying mechanical integration into existing drive and converter assemblies.
The RTS-01 is available with eight terminal configurations to suit different wiring and assembly requirements. Contact and solder field variants (RTS-01-...-1) provide bare pads for PCB soldering or direct wire attachment. Soldered wire variants (RTS-01-...-2) ship with pre-attached leads. Faston connector variants are offered in 4.8mm and 6.3mm blade widths, each available at either 90° or 45° orientations (RTS-01-...-3/4.8, -4/4.8, -3/6.3, -4/6.3). Screw terminal variants are available with nuts (RTS-01-...-5/A) or screws (RTS-01-...-5/B), accommodating panel-wiring and field-installation scenarios. This breadth of termination options allows the same resistive element to be specified across prototyping, production PCB, and cabinet-wiring environments without redesign.
RTS-01 Series Heatsinkable Power Thick Film Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: RTS-01
Resistor type: Power film
Description: Heatsinkable thick film
Power Rating: 100W
Resistance (Ω): 0.1~1M
Tolerance (%): ±5, ±10
TCR (ppm/C): 100
Applications of the RTS-01 Series Heatsinkable Power Thick Film Resistors
Where RARA metal clad resistors are deployed in the field.
Motor drive and variable-speed drive circuits — braking chopper and DC bus resistors
Power converter snubber and overvoltage clamp networks — low-inductance transient energy absorption
High-frequency switching power supplies — damping and current-limiting resistors
UPS and power conditioning equipment — load resistors and discharge networks
Industrial control and automation panels — compact heatsink-mounted power dissipation
Inverter and converter gate drive circuits — non-inductive series and parallel damping
Test and measurement equipment — precision load and attenuator resistors
Automotive power electronics — DC-DC converters and on-board charger circuits
Renewable energy systems — dump load and crowbar resistor assemblies
Telecommunications power equipment — high-power filtering and protection resistors
Related Products of the RTS-01 Series Heatsinkable Power Thick Film Resistors
Model: RTS-02
Resistor type: Power film
Description: Heatsinkable thick film
Power Rating: 300W, 600W
Resistance (Ω): 0.1~1M
Tolerance (%): ±5, ±10
TCR (ppm/C): 100.
Model: TNP25, TNP45
Resistor type: Power film
Description: SMD surge protection
Power Rating: 25W, 45W
Resistance (Ω): 0.1~51k
Tolerance (%): ±1
TCR (ppm/C): 100
Model: TNP10/20S/50U
Resistor type: Power film
Description: Power thin film
Power Rating: 20W, 35W, 50W
Resistance (Ω): 0.02~510k
Tolerance (%): ±1, ±5
TCR (ppm/C): 50, 100, 250
Model: TNP50S, TNP100S
Resistor type: Power film
Description: Power thin film, TO227
Power Rating: 50W, 100W
Resistance (Ω): 0.02~510k
Tolerance (%): ±1, ±5
TCR (ppm/C): 50, 100, 250.
Why Choose RARA Metal Clad Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Automotive Qualified
AEC-Q200 tested models and IATF 16949 certification for EV and automotive powertrain applications. Trusted by GM Korea, Tesla, and Proterra.
02
STEP Files Included
3D STEP files available for core models, supporting ECAD/MCAD integration and thermal management simulation in your design workflow.
03
Wide Power Range
A single product family spanning 10W to 8.5kW means you can source across a project from one qualified, certified supplier.
04
Global Track Record
Deployed by Siemens, Rockwell, Toshiba, Schneider Electric, LG, and Hanwha — a customer list built on decades of consistent performance.
