tlR series metal plate current sensing micro resistor is a leadless surface mounted resistor made of alloy material. It has ultra-low resistance (1 mΩ), high reliability, high accuracy, high frequency characteristics, ultra-small size, non-inductive characteristics. It is suitable for use in DC-DC converters, as current detection for CPU, in motor control units and in inverter power supplies.
The LOW Ohm 28 series from KOA offers ultra‑low resistance metal‑plate resistors with a thickness of 0.6 mm, non‑inductive construction and high‑frequency performance. They are suitable for large‑current detection, DC‑DC converters, CPU current sensing, motor control units and inverter power supplies, and meet IEC 60115‑1 and JIS C 5201‑1 standards.
Technical data such as resistance tolerance (±1 %), temperature coefficient (±75 ppm/K), power ratings (0.5 W, 1 W, 2 W) and operating temperature range (‑65 °C to +170 °C) are listed, along with ordering codes, packaging details and derating guidelines for ambient temperatures above +70 °C.
| Resistance tolerance | ±1 % |
|---|---|
| Temperature coefficient (TCR) | ±75 ppm/K |
| Rated ambient temperature | +70 °C |
| Operating temperature range | -65 °C … +170 °C (+155 °C) |
| Thickness | 0.6 mm |
| Power rating (TLR 2B) | 0.5 W |
| Resistive element material | Metal alloy |
| Termination material | Cu metal |
The resistance tolerance is ±1 %.
The TCR is ±75 ppm/K.
They operate from –65 °C up to +170 °C (or +155 °C).