Welwyn 1.2kΩ Wire Wound Resistor 3W ±5% W21-1K2JI

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Save 53% when you buy 500 units

Subtotal (1 bag of 5 units)*

£6.75

(exc. VAT)

£8.10

(inc. VAT)

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  • Plus 4,050 unit(s) shipping from 08 October 2025
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Per unit
Per Bag*
5 - 95£1.35£6.75
100 - 245£0.87£4.35
250 - 495£0.738£3.69
500 +£0.626£3.13

*price indicative

RS Stock No.:
139-3389
Mfr. Part No.:
W21-1K2JI
Brand:
Welwyn
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Brand

Welwyn

Resistance

1.2kΩ

Power Rating

3W

Tolerance

±5%

Technology

Wire Wound

Series

W20

Maximum Operating Temperature

+200°C

Temperature Coefficient

±200ppm/°C

Minimum Operating Temperature

-55°C

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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