Welwyn 820Ω Wire Wound Resistor 3W ±5% W21-820RJI
- RS Stock No.:
- 139-3293
- Mfr. Part No.:
- W21-820RJI
- Manufacturer:
- Welwyn
12000 In stock for delivery within 2 working days
Added
Price Each (In a Box of 1000)
€0.319
(exc. VAT)
€0.392
(inc. VAT)
| Units | Per unit | Per Box* |
| 1000 + | €0.319 | €319.00 |
| *price indicative | ||
- RS Stock No.:
- 139-3293
- Mfr. Part No.:
- W21-820RJI
- Manufacturer:
- Welwyn
Technical data sheets
Legislation and Compliance
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. Using the formula below we can estimate the “equivalent” energy of a pulse applied to a resistor that is already dissipating power.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
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 | 820Ω |
| Power Rating | 3W |
| Tolerance | ±5% |
| Technology | Wire Wound |
| Series | W20 |
| Maximum Operating Temperature | +200°C |
| Temperature Coefficient | ±200ppm/°C |
| Minimum Operating Temperature | -55°C |