PWA
www.vishay.com
Vishay Electro-Films
Revision: 29-Apr-15
1
Document Number: 61019
For technical questions, contact: efi@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Thin Film Power Resistors
Product may not be to scale
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, method 2032, class H or
class K.
FEATURES
• Wire bondable
• 500 mW power
• Chip size: 0.030" x 0.045"
• Case: 0503
• Resistance range 0.3 to 1 M
• Oxidized silicon substrate for good power
dissipation
• Resistor material: Tantalum nitride, self-passivating
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
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
PARAMETER VALUE UNIT
Total Resistance Range 0.3 to 1M
Standard Tolerances ± 0.1, ± 0.5, ± 1, ± 5 %
TCR ± 25, ± 50, ± 100, ± 150 ppm/°C
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER VALUE UNIT
Noise, MIL-STD-202, Method 308
100 to 250 k
< 100 or > 251 k
-35 typ.
-20 typ.
dB
Moisture Resistance, MIL-STD-202, Method 106 ± 0.5 max. R/R %
Stability, 1000 h, +125 °C, 250 mW ± 0.5 max. R/R %
Operating Temperature Range -55 to +125 °C
Thermal Shock, MIL-STD-202, Method 107, Test Condition F ± 0.1 max. R/R %
High Temperature Exposure, +150 °C, 100 h ± 0.2 max. R/R %
Dielectric Voltage Breakdown 200 V
Insulation Resistance 10
12
min.
Operating Voltage
Steady State
5 x Rated Power
100 max.
200 max.
V
DC Power Rating at + 70 °C (Derated to zero at + 175 °C)
(Conductive epoxy die attach to alumina substrate)
0.5 W
5 x Rated Power Short-Time Overload, + 25 °C, 5 s ± 0.1 max. R/R %
0.1 %
± 150 ppm/°C
± 50 ppm/°C
± 100 ppm/°C
0.5 %
25 Ω0.3 Ω
± 25 ppm/°C
2 Ω 5 Ω 100 Ω
1 %5 %
Tightest Standard Tolerance Available
*600, - 100 ppm R < 2
Ω,
± 250 ppm for 2
Ω
to 5
Ω
300 k
Ω
1 M
Ω
200 kΩ 500 kΩ