Product Overview
The W Series Wirewound Power Resistor offers robust performance with a low thermal resistant ceramic core and E24 resistance values. Designed for reliability, these RoHS compliant resistors are available in a wide power range from 1 to 10 Watts. The coating material meets UL 94V-0 requirements, ensuring safety and durability. Ideal for demanding applications such as smart meters, renewable energy systems, industrial equipment, power supplies and 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: Tin-plated copper wire
- Compliance: RoHS compliant*
- 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 % RH, 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.
Product 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) |
Packaging Dimensions (MM/INCHES)
| Model | O (MM/IN) | P (MM/IN) | A (MM/IN) | B (MM/IN) | C (MM/IN) | Qty./Box |
|---|---|---|---|---|---|---|
| W1M | 58 1 (2.283 .039) | 5 0.3 (.197 .012) | 75 5 (2.953 .197) | 70 5 (2.756 .197) | 255 5 (10.039 .197) | 1,000 pcs. |
| W2M | 58 1 (2.283 .039) | 10 0.5 (.394 .020) | 80 5 (3.150 .197) | 82 5 (3.228 .197) | 255 5 (10.039 .197) | 1,000 pcs. |
| W3M | 65 5 (2.559 .197) | 10 0.5 (.394 .020) | 90 5 (3.543 .197) | 119 5 (4.685 .197) | 255 5 (10.039 .197) | 1,000 pcs. |
| W5M | 65 5 (2.559 .197) | 10 0.5 (.394 .020) | 90 5 (3.543 .197) | 88 5 (3.465 .197) | 255 5 (10.039 .197) | 500 pcs. |
| W7M | 90 5 (3.543 .197) | 10 0.5 (.394 .020) | 115 5 (4.528 .197) | 124 5 (4.882 .197) | 500 5 (19.685 .197) | 500 pcs. |
For W9M and W10M packaging specifications, please contact factory.
How to Order
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 = 22 ohms; 1500 = 150 ohms
- Resistance Tolerance: J = 5 %
Important 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-W5M39R0J_C6325991.pdf
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