W Series Wirewound Power Resistor
Product Overview
The W Series Wirewound Power Resistor features a low thermal resistant ceramic core and E24 resistance values, designed for a wide power range from 1 to 10 Watts. Its coating material meets UL 94V-0 requirements, ensuring compliance with safety standards. These resistors are ideal for applications in smart meters, renewable energy systems, industrial equipment, power supplies/chargers, lighting, instruments/gauges, and white goods. The series is RoHS compliant and offers non-inductive versions upon request.
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: Tin-plated copper wire
- Compliance: RoHS compliant*
- Resistance Values: E24 series
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 |
| Non-inductive Version | Available upon request |
| 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 >10 , 1 minute |
| Load Life (Humidity) | 40 2 C, 90 to 95 %. 1.5 hours ON, 0.5 hours OFF for 1000 hours at rated power. R/R (5 % + 0.05 ) |
| Load Life | 70 2 C. 1.5 hours ON, 0.5 hours OFF for 1000 hours at rated power. R/R(5 % + 0.05 ) |
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.
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 |
Dimensions (MM/INCHES)
| 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 %
Applications
- Smart meters
- Renewable energy
- Industrial
- Power supplies/chargers
- Lighting
- Instruments/gauges
- White goods
Additional Information
*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. 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-W1M1200J_C6000460.pdf
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