Vishay Intertechnology CW...HE Axial Lead Wirewound Resistors Offer Reliable High-Energy Surge Protection to 106.5 J

Vishay CW02B...HE CW005...HE CW010...HE

Vishay Intertechnology introduced a new series of silicone-coated axial lead wirewound resistors. Providing superior short-term energy surge protection compared to standard wirewound devices, Vishay Dale CW - High Energy series resistors can also be utilized in high-temperature operating conditions up to +350 °C.

Vishay CW - High Energy

CW - High Energy resistors provide higher overload and high surge energy protection than traditional wirewound resistors, and exceed IEC 61000-4-5 (1.2 µs/50 µs) requirements for communication equipment, power supplies, metering and welding equipment, power tools, and appliances in a wide range of applications. The devices offer a rugged, completely welded construction for increased reliability, while their high-temperature silicone coating allows for operating temperature ranges of -65 °C to +250 °C (characteristic U) and -65 °C to +350 °C (characteristic V).

The compact resistors provide high power ratings from 3 W to 13 W at 25 °C and 2000-hour load-life stability of less than ± 3 % at +25 °C. The devices offer resistances from 2 Ω to 938 kΩ, with tolerances of ± 5 % and ± 10 %, and TCR of ± 50 ppm/°C for resistance from 2.0 Ω to 9.9 Ω, and ± 30 ppm/°C for resistance of 10 Ω and above.

 Device Specification Table:
Model
Power rating P25 °C (W)
Energy
rating1 (J)
Resistance
range (Ω)
Characteristic
U +250 °C
Characteristic
V +350 °C
3.0
3.75
2.7 to 10.4
2.0 to 87.5
5.0
6.5
10.5 to 39.1
7.6 to 34.3
10.0
13.0
28.7 to 106.5
20.7 to 938

The CW - High Energy series is available with both lead (Pb)-free and tin/lead terminations.

Samples and production quantities of the CW - High Energy series are available now, with a lead time of six to seven weeks for larger orders.

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