Product Overview
The W Series Wirewound Power Resistor is designed for reliable performance in a wide range of applications, including smart meters, renewable energy systems, industrial equipment, power supplies, chargers, lighting, instruments, gauges, and white goods. These resistors feature a low thermal resistant ceramic core and E24 resistance values, with a coating material that meets UL 94V-0 requirements. They are RoHS compliant and available in a wide power range from 1W to 10W, offering a robust solution for demanding electronic designs.
Product Attributes
- Brand: Bourns
- Product Series: W Series
- Type: Wirewound Power Resistor
- Core Material: Low thermal resistant ceramic
- Coating Material: Meets UL 94V-0 requirements
- Compliance: RoHS compliant*
- Resistance Values: E24 resistance values
- Non-inductive version: Available upon request
Technical Specifications
| Specification | Details |
|---|---|
| Resistance Range | See Popular Resistance Values Table |
| Tolerance | 5 % |
| Operating Temperature | -55 C to +200 C |
| Temperature Coefficient | 300 ppm/C |
| Maximum Voltage | P*R |
| Lead Wire | Tin-plated copper wire |
| Short Time Overload | 2.5 times rated voltage for 5 seconds. R/R(2 % 0.05 ) |
| Solderability | 245 3 C for 2.5 0.5 seconds. Over 95 % coverage |
| Resistance to Solder Heat | 260 5 C for 10 1 seconds. R/R(1 % + 0.05 ) |
| Dielectric Strength | Test voltage >500 Vrms for >1 minute. Pass |
| Insulation Resistance | Test voltage >500 Vrms for 1 minute. >109 |
| Load Life (Humidity) | 1000 hours at rated power (1.5 hours ON, 0.5 hours OFF) at 40 2 C, 90 to 95 %. R/R (5 % + 0.05 ) |
| Load Life | 1000 hours at rated power (1.5 hours ON, 0.5 hours OFF) at 70 2 C. R/R(5 % + 0.05 ) |
Packaging Specifications
| Model | Style | Qty. per Box (Pcs.) | Min. Order Quantity (Pcs.) |
|---|---|---|---|
| W1M | Ammo Pack | 1,000 | 5,000 |
| W2M | Ammo Pack | 500 | 2,000 |
| W3M | Ammo Pack | 500 | 2,000 |
| W5M | Ammo Pack | 500 | 2,000 |
| W7M | Bulk in Box | 25 / 200 | 2,000 |
| W9M | Bulk in Box | 25 / 200 | 2,000 |
| W10M | Bulk in Box | 25 / 200 | 2,000 |
Popular Resistance Values
| Code | R Value | Code | R Value |
|---|---|---|---|
| 15R0 | 15 | 56R0 | 56 |
| 22R0 | 22 | 82R0 | 82 |
| 33R0 | 33 | 1000 | 100 |
| 39R0 | 39 | 1200 | 120 |
| 47R0 | 47 | 1500 | 150 |
Other E24 resistance values available upon request.
Dimensions
| Model | L (mm/in) | D (mm/in) | W (mm/in) | T (DIA.) (mm/in) |
|---|---|---|---|---|
| W1M | 9.5 1.0 (.374 .039) | 3.0 1.0 (.118 .039) | 28.0 3.0 (1.102 .118) | 0.54 0.05 (.021 .002) |
| W2M | 11.5 1.0 (.453 .039) | 4.5 1.0 (.177 .039) | 28.0 3.0 (1.102 .118) | 0.70 0.05 (.028 .002) |
| W3M | 15.5 1.0 (.610 .039) | 5.5 1.0 (.217 .039) | 28.0 3.0 (1.102 .118) | 0.70 0.05 (.028 .002) |
| W5M | 17.5 1.0 (.689 .004) | 6.5 1.0 (.256 .039) | 28.0 3.0 (1.102 .118) | 0.75 0.05 (.030 .002) |
| W7M | 24.5 1.0 (.965 .039) | 8.5 1.0 (.335 .039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
| W9M | 39.5 1.0 (1.555 .039) | 8.5 1.0 (.335 .039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
| W10M | 52.5 1.0 (2.067 .039) | 8.5 1.0 (.335 .0039) | 38.0 3.0 (1.496 .118) | 0.75 0.05 (.030 .002) |
How to Order
W (Product Series) - 3 (Power Rating) - M (Pin Style) - 22R0 (Resistance Code) - J (Resistance Tolerance)
- Power Rating: 1, 2, 3, 5, 7, 9, 10 Watts
- Pin Style: M = Axial Miniaturized Version
- Resistance Code: R<100 ohms: R represents decimal point (e.g., 56R0 = 56 ohms). R100 ohms: First three digits are significant, fourth digit represents number of zeros (e.g., 1500 = 150 ohms).
- Resistance Tolerance: J = 5 %
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications.
2411041600_BOURNS-W1M33R0J_C1366039.pdf
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