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Axial Lead Wirewound Resistors

Mon, 04/21/2014 - 9:21am
MDT Staff

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Ideal for Audio and Medical Applications, Devices Feature High Power Ratings to 12 W and Operating Temperature to +350 °C

Vishay Intertechnology, Inc. today introduced a new series of non-magnetic, non-inductive axial lead wirewound resistors with high power ratings to 12 W and high-temperature operation to +350 °C, which is ideal for high-end audio and medical imaging equipment. 

For radio frequency (RF) and operational amplifier applications, the non-magnetic and all-welded construction of the Vishay Mills MRA series devices, from the Vishay Dale Resistors division, greatly enhances frequency response. Combined with a non-inductive Ayrton-Perry winding, inductive reactance and signal loss are virtually eliminated. 

The resistors provide power ratings from 4 W to 12 W at 25 °C and temperature ranges from -65 °C to +250 °C (characteristic U) and -65 °C to +350 °C (characteristic V). The devices offer resistance from 0.01 Ω to 85.0 kΩ, with tolerances of ± 1 %, ± 5 %, and ± 10 %, and TCR of ± 90 ppm/°C for resistance below 0.99 Ω, ± 50 ppm/°C for resistance from 1.0 Ω to 9.9 Ω, and ± 30 ppm/°C for resistance of 10 Ω and above. 

MRA resistors are RoHS-compliant and comply with Vishay Green standards.

Samples and production quantities of the MRA series are available now, with a lead time of six to eight weeks for larger orders. Pricing for U.S. delivery only starts at $1.40 per piece in 1,000-piece quantities.

Find out more about Vishay Intertechnology Inc.'s axial lead wirewound resistors.

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