44 4mm Square Multiturn Surface Mount Cermet Trimming Potentiometer
The Model 44 trimming potentiometer provides a compact SMD design for space‑saving board layouts. It is sealed for water‑wash resistance, available in top‑adjustment or side‑adjustment versions, and offered with J‑Hook or gull‑wing terminations. The device features a nominal 9‑turn travel, essentially infinite resolution, and a maximum input voltage of 300 Vdc.
Key specifications include a resistance range of 10 Ω to 2 MΩ, tolerance of ±10 % (±20 % for <100 Ω), power rating of 0.25 W at 85 °C, and operating temperature from –65 °C to +150 °C. Ordering information, packaging options, and standard resistance values are provided for easy selection.
| Resistance Range | 10 Ω to 2 MΩ |
|---|---|
| Resistance Tolerance | ±10 % (±20 % <100 Ω) |
| Maximum Input Voltage | 300 Vdc or rms |
| Maximum Slider Current | 100 mA |
| Power Rating | 0.25 W at 85 °C |
| End Resistance | Maximum 1 % or 2 Ω |
| Nominal Turns | 9 |
| Dielectric Strength | 600 V rms |
| Insulation Resistance | ≥ 1 000 MΩ |
| Temperature Coefficient | Maximum +100 ppm/°C (<100 Ω = +250 ppm/°C) |
| Operating Temperature Range | –65 °C to +150 °C |
| Weight | ≈ 0.3 g |
| Starting Torque | Maximum 3 oz‑in (0.021 N·m) |
The maximum input voltage is 300 Vdc or rms, as long as it does not exceed the power rating.
It provides a nominal 9 turns of electrical travel.
The power rating is 0.25 W at 85 °C, derating to zero at 150 °C.
Packaging options include 13‑inch or 7‑inch tape & reel, tubes, and anti‑static tubes; the specific option must be specified.