PWB
Vishay Electro-Films
Thin Film Power Resistors
CHIP
RESISTORS
FEATURES
•
Wire bondable
Product may not
be to scale
•
Power: 1 W
•
Chip size: 0.070 inches square
•
Resistance range: 0.3
Ω
to 20 kΩ
•
Oxidized silicon substrate for good power dissipation
•
Resistor material: Tantalum nitride, self-passivating
The PWB series resistor chips offer a 1 W power rating in a
relatively small size. They offer one of the best combinations
of size and power available.
The PWBs are manufactured using Vishay Electro-Films
(EFI) sophisticated thin film equipment and manufacturing
technology. The PWBs are 100 % electrically tested and
visually inspected to MIL-STD-883.
APPLICATIONS
The PWB 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 %
PROCESS CODE
CLASS H*
± 50 ppm/°C
± 100 ppm/°C
*
± 250 ppm/°C
CLASS K*
005
004
009
001
000
008
*MIL-PRF-38534 inspection criteria
0.3
Ω
2
Ω
10
Ω
50
Ω
10 kΩ
20 kΩ
* ± 600 ppm/C R < 2
Ω
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER
Noise, MIL-STD-202, Method 308
100
Ω
- 250 kΩ
< 100
Ω
or > 251 kΩ
MoistureResistance, MIL-STD-202
Method 106
Stability, 1000 h, + 125 °C, 500 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 Sttach to Alumina Substrate)
5 x Rated Power Short-Time Overload, + 25 °C, 5 s
- 35 dB typ.
- 20 dB typ.
± 0.5 % max.
ΔR/R
± 0.5 % max.
ΔR/R
- 55 °C to + 125 °C
± 0.1 % max.
ΔR/R
± 0.2 % max.
ΔR/R
200 V
10
12
min.
100 V max.
200 V max.
1W
± 0.25 % max.
ΔR/R
%
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62
For technical questions, contact: efi@vishay.com
Document Number: 61021
Revision: 12-Mar-08
PWB
Thin Film Power Resistors
Vishay Electro-Films
DIMENSIONS
in inches
0.070
0.063
0.005
0.070
0.063
0.005
CHIP
RESISTORS
0.072
0.072
TYPICAL RANGE
R < 240
Ω
0.010
TYPICAL RANGE
240
Ω
- 20 kΩ
SCHEMATIC
MECHANICAL SPECIFICATIONS
in inches
PARAMETER
Chip Size
Chip Thickness
Chip Substrate Material
Resistor Material
Bonding Pad Size
Number of Pads
Pad Material
Backing
Options:
Gold back for eutectic die attach
Gold bonding pads, 15 kÅ minimum thickness
Consult Applications Engineer
0.070 x 0.070 ± 0.005 (1.781 x 1.781 mm)
0.010 ± 0.002 (0.254 ± 0.05 mm)
Oxidized silicon, 10 kÅ minimum SiO
2
Tantalum nitride, self-passivating
0.005 x 0.010 (0.127 x 0.254 mm) minimum
2
10 kÅ minimum aluminum
None, lapped semiconductor silicon
ORDERING INFORMATION
Example: 100 % visual, 10 kΩ, ± 1 %, ± 100 ppm/°C TCR, aluminum pads, class H visual inspection
W
INSPECTION/
PACKAGING
W = 100 % visually inspected
parts in matrix trays per
MIL-STD-883
X = Sample, visually inspected
parts loaded in matrix
trays (4 % AQL)
PWB
PRODUCT
FAMILY
000
PROCESS
CODE
See Process Code
table
1000
RESISTANCE
VALUE
Use first 4 digits
significant digits of the
resistance
1
MULTIPLIER
CODE
D
= 0.0001
C
= 0.001
B
= 0.01
A
= 0.1
0
=1
1
= 10
F
TOLERANCE
CODE
D
= 0.5 %
F
= 1.0 %
G
= 2.0 %
H
= 2.5 %
J
= 5.0 %
K
= 10 %
Document Number: 61021
Revision: 12-Mar-08
For technical questions, contact: efi@vishay.com
www.vishay.com
63
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000
Revision: 18-Jul-08
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