KOA Speer WK73 Wide Terminal Resistors
KOA Speer WK73 Wide Terminal Resistors are wide-side termination (reverse-geometry) type flat chip resistors. These resistors have high reliability and performance with a Temperature Coefficient of Resistance (T.C.R) of ±100 x 10-6/K. These wide terminal resistors are AEC-Q200 tested and meet EU RoHS standards. The WK73 series includes the WK73R, WK73R Higher Power, WK73-RT, WK73S, and WK73S Higher Power resistors. The WK73-RT features high anti-sulfuration characteristics due to using a high sulfuration-proof inner top electrode material. These devices are AEC-Q200 tested and meet EU RoHS requirements. The WK73 series resistors operate over a temperature range from -55°C to +155°C. These components are used in automotive electronics, high-power circuits, and industrial equipment.
Features
- AEC-Q200 tested
- High reliability and performance with T.C.R. ±100 x 10-6/K
- Lead-free and meets EU RoHS requirements
- Wide-side termination (reverse-geometry) type flat chip resistor
Applications
- Automotive:
- Anti-lock braking systems
- Electrical Control Units (ECU)
- Headlights
- Motors
- Industrial:
- DC/DC converters
- Motor controls
- Power suppliers
Technical Specifications
| Series | Power Rating | Rated ambient Temperature | Rated terminal part temperature | TCR (x 10-6/K) | Datasheet (PDF) |
|---|---|---|---|---|---|
| WK73R | 0.33W to 2.0W | 70°C | 100°C to 125°C | ±100 to ±200 | Datasheet |
| WK73R Higher Power | 1.5W to 3.0W | 70°C | 95°C | ±100 to ±200 | Datasheet |
| WK73S | 0.75W to 2.0W | 70°C | 100°C to 125°C | 0 to ±800 | Datasheet |
| WK73S Higher Power | 1.5W to 3.0W | 70°C | 95°C | ±100 to ±800 | Datasheet |
| WK73-RT | 0.75W to 2W | 70°C | 100°C to 125°C | ±100 to ±200 | Datasheet |
