Wirewound Resistors offer surge protection to 106.5 J.
Press Release Summary:
Featuring completely welded construction with high-temperature silicone coating, CW - High Energy Series operates from -65 to +250°C (characteristic U) and -65 to +350°C (characteristic V). Axial lead resistors provide power ratings from 3–13 W at 25°C and 2,000-hr load-life stability of less than ±3% at +25°C. Offering resistances from 2 Ω to 938 kΩ, with tolerances of ±5% and ±10%, devices feature TCR of ±50 ppm/°C for resistance from 2.0–9.9 Ω, and ± 30 ppm/°C for resistance of 10 Ω and above.
Original Press Release:
Vishay Intertechnology CW...HE Axial Lead Wirewound Resistors Offer Reliable High-Energy Surge Protection to 106.5 J
MALVERN, Pa. – 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 with 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 they 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 2,000-hour load-life stability of less than ± 3 % at +25 °C. The devices offer resistances from 2Â Ω to 938 kΩ, with tolerances of ± 5 % and ± 10 %, and TCR of ± 50 ppm/°C for resistance from 2.0Â Ω to 9.9 Ω, and ± 30 ppm/°C for resistance of 10Â 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 (Ω) | |
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. Pricing for U.S. delivery only starts at $0.36 per piece.
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 www.vishay.com.
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