Power Resistor 30W 16Ω
The 30 W, 16 Ω cement-type power resistor is built around a high-alumina ceramic core with a resistor element of either metal-oxide film or resistance wire, encapsulated in a ceramic case and sealed with silicon resin (silicon cement) to provide mechanical protection and flame retardance (meets UL-94V-0). Termination is made with tinned iron caps and solderable/tinned lead wires welded to the caps, producing a compact heavy-duty package suited to dissipating significant heat.
Rated at 30 W, the resistor’s rated voltage is defined by E = √P*R (for 30 W × 16 Ω this is ≈ 21.91 V), and the part is specified for continuous operation at the rated ambient for its class (for 15 W and above the rated ambient is 25 °C; derating applies above that per the power-derating curve). It is designed to tolerate short-time overloads and pulse stresses according to the JIS-based test limits in the sheet.
The resistor meets the document’s JIS-C test battery: solderability and solder-heat resistance, temperature cycling, insulation and dielectric tests, humidity load life (40±2 °C, 90–95% RH, 1000 h) and load life (70±3 °C, 1000 h). Resistance change limits and short-time overload/pulse limits are stated in the spec, demonstrating suitability where predictable long-term stability is required.
Features:
- Cement-coated ceramic housing with high-alumina core.
- Metal-oxide film or resistance wire element.
- Silicon cement sealing, UL-94V-0 flame resistant.
- Welded tinned iron end caps with solderable leads.
- Continuous 30 W power rating with derating curve.
- Designed to meet JIS C 5202 reliability tests.
Specifications:
| Parameter | Value |
|---|---|
| Product type: | Cement (ceramic) power resistor |
| Rated power: | 30 W |
| Nominal resistance: | 16 Ω |
| Rated voltage (E = √(P×R)): | ≈ 21.91 V |
| Maximum working voltage: | 1,000 V |
| Maximum overload voltage: | 1,500 V |
| Dielectric withstanding voltage: | 1,000 V |
| Temperature coefficient: | Metal-oxide: ±350 ppm/°C; Resistance wire: ±260 ppm/°C |
| Resistance tolerance options: | K (±10%), J (±5%), G (±2%) |
| Insulation resistance: | ≥ 10³ MΩ |
| Solderability / solder heat resistance: | ≥95% coverage; solder heat test 350±10 °C for 3±1 s |
| Load life / humidity life tests: | Load life: 70±3 °C, 1000 h; Humidity load life: 40±2 °C, 90–95% RH, 1000 h |
| Typical external dims (CR-L style): | L 75±2.0 mm × W 19±2.0 mm × H 17±2.0 mm; lead dia Φ 0.68 mm |
Pinout Diagram:
Footprint Diagram:
Applications:
- Power control circuits.
- Load testing and dummy loads.
- Industrial automation equipment.
- Audio and amplifier systems.
- Power supply and inverter circuits.
Package Contents:
- 1x Power Resistor 30W 16Ω
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