Product Overview
The W Series Wirewound Power Resistor is designed for demanding applications requiring reliable power dissipation. Featuring a low thermal resistant ceramic core and E24 resistance values, these RoHS compliant resistors offer a wide power range from 1W to 10W. The coating material meets UL 94V-0 flammability requirements, ensuring safety in various environments. Ideal for smart meters, renewable energy systems, industrial equipment, power supplies, chargers, lighting, instruments, gauges, and white goods.
Product Attributes
- Brand: Bourns
- Product Series: W Series
- Construction: Wirewound Power Resistor
- Core Material: Low thermal resistant ceramic
- Coating Material: Meets UL 94V-0 requirements
- Lead Wire Material: Tin-plated copper wire
- Compliance: RoHS compliant* (Directive 2015/863)
- Resistance Values: E24 series
- 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 |
| Short Time Overload | 2.5 times rated voltage, R/R(2 % 0.05 ) for 5 seconds |
| 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. 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. 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 | Ammo Pack | 500 | 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.
How to Order
Format: W 3 M 22R0 J
- Product Series: W
- Power Rating: 1, 2, 3, 5, 7, 9, 10 Watts
- Pin Style: M = Axial Miniaturized Version
- Resistance Code: e.g., 22R0 for 22 , 1500 for 150
- Resistance Tolerance: J = 5 %
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) |
Important Information
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
2411041600_BOURNS-W3M56R0J_C7117051.pdf
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