Vishay turns to nitride for high-power chip resistors

Vishay is using aluminium nitride substrates to achive 2W and 6W power handling in 1206 and 2512 chip resistors, respectively.

Called PCAN, they also have enlarged backside terminations to reduce thermal resistance between resistive element and PCB solder joint.

“The devices provide four times the power handling capability of commercial chip resistors,” said the firm, which is aiming them at power supplies for industrial, telecommunications, test, measurement, medical, military and aerospace.

They have ±25ppm/°C and 0.1ppm/V coefficients, and laser-trimmed tolerances down to ±0.1% over -55°C to 150°C.

Values between 30Ω and 175Ω are available with 75 to 200V ratings.

Flame-resistant in accordance with UL 94 V-0.

Pb-free wrap-around terminations are standard, with Pb-inclusive, wire-bondable gold, and epoxy-bondable (glueable) gold options.

steve bush

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via Yuichun