MALVERN, Pa. — June 10, 2015 — Vishay Intertechnology, Inc. (NYSE: VSH) today 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.

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 Ω, 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.

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

Device Specification Table:

Model Power rating P25 °C ( W ) Energy rating1 (J) Resistance range (O)
Characteristic U +250 °C Characteristic V +350 °C
CW02B…HE 3.0 3.75 2.7 to 10.4 2.0 to 87.5
CW005…HE 5.0 6.5 10.5 to 39.1 7.6 to 34.3
CW010…HE 10.0 13.0 28.7 to 106.5 20.7 to 938


    Note 1: Energy rating depends on resistance value

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.

Vishay Intertechnology, Inc., a Fortune 1000 Company listed on the NYSE (VSH), is one of the world’s largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay’s product innovations, successful acquisition strategy, and “one-stop shop” service have made it a global industry leader.

Vishay can be found on the Internet at

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