Product Overview
The W Series Wirewound Power Resistor is designed for high-power applications, featuring a low thermal resistant ceramic core and E24 resistance values. These RoHS compliant resistors are available in a wide power range from 1 to 10 W, with a coating material that meets UL 94V-0 requirements. They are suitable for diverse applications including 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 core
- Lead Wire Material: Tin-plated copper wire
- Coating Material: Meets UL 94V-0 requirements
- Resistance Values: E24 series
- Compliance: RoHS compliant* (*RoHS Directive 2015/863, Mar 31, 2015 and Annex)
- 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 % Humidity. 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 ) |
Models & Packaging
| Model | Power Rating | Qty. per Box (Pcs.) | Min. Order Quantity (Pcs.) | Package Style |
|---|---|---|---|---|
| W1M | 1 Watt | 1,000 | 5,000 | Ammo Pack |
| W2M | 2 Watts | 500 | 2,000 | Ammo Pack |
| W3M | 3 Watts | 500 | 2,000 | Ammo Pack |
| W5M | 5 Watts | 500 | 2,000 | Ammo Pack |
| W7M | 7 Watts | 500 | 2,000 | Ammo Pack |
| W9M | 9 Watts | 25 / 200 | 2,000 | Bulk in Box |
| W10M | 10 Watts | 25 / 200 | 2,000 | Bulk in Box |
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
Format: W [Power Rating] [Pin Style] [Resistance Code] [Resistance Tolerance]
Example: W3M22R0J
- 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 , 1500 = 150
- Resistance Tolerance: J = 5 %
Applications
- Smart meters
- Renewable energy
- Industrial
- Power supplies/chargers
- Lighting
- Instruments/gauges
- White goods
Additional Information
Specifications are subject to change without notice. Users should verify actual device performance in their specific applications.
2411041600_BOURNS-W5M1200J_C5830963.pdf
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