Welwyn 7.5Ω Wire Wound Resistor 3W ±5% W21-7R5JI
- RS Stock No.:
- 139-3292
- Mfr. Part No.:
- W21-7R5JI
- Brand:
- Welwyn
Available to back order for despatch 03/02/2025
Added
Price Each (In a Box of 1000)
£0.359
(exc. VAT)
£0.431
(inc. VAT)
| Units | Per unit | Per Box* |
| 1000 + | £0.359 | £359.00 |
| *price indicative | ||
- RS Stock No.:
- 139-3292
- Mfr. Part No.:
- W21-7R5JI
- Brand:
- Welwyn
Technical Reference
Legislation and Compliance
- COO (Country of Origin):
- BB
Product Details
As there is a maximum temperature to which the wire can rise during an overload, if the resistor is already dissipating heat, then the pulse energy applied should be less than that allowed by the graph. It should also be noted that for repetitive pulses the average power dissipated must not exceed the continuous power rating of the resistor.
CECC approved
Suitable for harsh environments
Impervious lead free vitreous enamel coating
Overload characteristics ideal for protection circuits
High stability and reliability
High power dissipation for size
Suitable for harsh environments
Impervious lead free vitreous enamel coating
Overload characteristics ideal for protection circuits
High stability and reliability
High power dissipation for size
Specifications
Attribute | Value |
|---|---|
| Resistance | 7.5Ω |
| Power Rating | 3W |
| Tolerance | ±5% |
| Technology | Wire Wound |
| Series | W20 |
| Temperature Coefficient | ±200ppm/°C |
| Maximum Operating Temperature | +200°C |
| Minimum Operating Temperature | -55°C |