Welwyn 3.9 Ω Wirewound Resistor 3 W 5 % W21-3R9JI
- RS Stock No.:
- 139-3271
- Mfr. Part No.:
- W21-3R9JI
- Manufacturer:
- Welwyn
This image is representative of the product range
Subtotal (1 box of 1000 units)*
SGD859.00
(exc. GST)
SGD936.00
(inc. GST)
Add 1000 units to get free delivery
Temporarily out of stock
- Shipping from 11 August 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Box* |
|---|---|---|
| 1000 + | SGD0.859 | SGD859.00 |
*price indicative
- RS Stock No.:
- 139-3271
- Mfr. Part No.:
- W21-3R9JI
- Manufacturer:
- Welwyn
Specifications
Technical data sheets
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Welwyn | |
| Resistance | 3.9Ω | |
| Product Type | Resistor | |
| Power Rating | 3W | |
| Resistor Type | Wirewound | |
| Tolerance ± | 5% | |
| Packaging | Ammo Pack | |
| Voltage | 100 V | |
| Axial/Radial | Axial | |
| Technology | Wirewound | |
| Series | W20 | |
| Automotive Standard | No | |
| Package/Case | 1000 | |
| Minimum Operating Temperature | -55°C | |
| Maximum Operating Temperature | 200°C | |
| Standards/Approvals | IEC, RoHS | |
| Length | 12.7mm | |
| Diameter | 5.6 mm | |
| Temperature Coefficient | ±200 ppm/°C | |
| Lead Diameter | 0.8mm | |
| Select all | ||
|---|---|---|
Brand Welwyn | ||
Resistance 3.9Ω | ||
Product Type Resistor | ||
Power Rating 3W | ||
Resistor Type Wirewound | ||
Tolerance ± 5% | ||
Packaging Ammo Pack | ||
Voltage 100 V | ||
Axial/Radial Axial | ||
Technology Wirewound | ||
Series W20 | ||
Automotive Standard No | ||
Package/Case 1000 | ||
Minimum Operating Temperature -55°C | ||
Maximum Operating Temperature 200°C | ||
Standards/Approvals IEC, RoHS | ||
Length 12.7mm | ||
Diameter 5.6 mm | ||
Temperature Coefficient ±200 ppm/°C | ||
Lead Diameter 0.8mm | ||
- COO (Country of Origin):
- BB
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
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