pwa| Datasheet

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PWA
Vishay Electro-Films

Thin Film Power Resistors
CHIP RESISTORS

FEATURES
Wire bondable
Product may not be to scale

500 mW power Chip size: 0.030 x 0.045 inches Resistance range 0.3 to 1 M Oxidized silicon substrate for good power dissipation Resistor material: Tantalum nitride, self-passivating

The PWA series resistor chips offer a 500 mW power rating in a small size. These offer one of the best combinations of size and power available. The PWAs are manufactured using Vishay Electro-Films (EFI) sophisticated thin film equipment and manufacturing technology. The PWAs are 100 % electrically tested and visually inspected to MIL-STD-883.

APPLICATIONS
The PWA resistor chips are used mainly in higher power circuits of amplifiers where increased power loads require a more specialized resistor.

TEMPERATURE COEFFICIENT OF RESISTANCE, VALUES AND TOLERANCES
Tightest Standard Tolerance Available
5% 1% 0.5 % 0.1 % 25 ppm/ C 50 ppm/ C 100 ppm/ C 150 ppm/ C

PROCESS CODE CLASS H* 002 001 000 009 *MIL-PRF-38534 inspection criteria CLASS K* 006 005 008 010

0.3 2 25 5 100 *600, - 100 ppm R < 2 , 250 ppm for 2 to 5

200 k 500 k 300 k 1 M

STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER Noise, MIL-STD-202, Method 308 100 - 250 k < 100 or > 251 k Moisture Resistance, MIL-STD-202 Method 106 Stability, 1000 h, + 125 C, 250 mW Operating Temperature Range Thermal Shock, MIL-STD-202, Method 107, Test Condition F High Temperature Exposure, + 150 C, 100 h Dielectric Voltage Breakdown Insulation Resistance Operating Voltage Steady State 5 x Rated Power DC Power Rating at + 70 C (Derated to Zero at + 175 C) (Conductive Epoxy Die Attach to Alumina Substrate) 5 x Rated Power Short-Time Overload, + 25 C, 5 s - 35 dB typ. - 20 dB typ. 0.5 % max. R/R 0.5 % max. R/R - 55 C to + 125 C 0.1 % max. R/R 0.2 % max. R/R 200 V 1012 min. 100 V max. 200 V max. 500 mW 0.1 % max. R/R

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For technical questions, contact: efi@vishay.com

Document Number: 61019 Revision: 12-Mar-08