VSH, VSC
Vishay Foil Resistors
Bulk Metal
®
Foil Technology Low Profile Conformally Coated High
Precision Resistor with Tight Tolerance from ± 0.01 % and Load Life
Stability of ± 0.01 % and Instantaneous Thermal Stabilization
FEATURES
•
Temperature coefficient of resistance (TCR):
± 2.0 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.) (see table 1)
•
Tolerance: to ± 0.01 %
•
Power rating: to 300 mW at + 70 °C
•
Load life stability: to ± 0.01 % at 70 °C, 2000 h at rated
power
•
Resistance range: 5
Ω
to 120 kΩ (for higher and lower
values, please contact us)
•
Vishay Foil resistors are not restricted to standard values;
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
•
Thermal stabilization time < 1 s
•
Electrostatic discharge (ESD) up to 25 000 V
•
Short time overload:
≤
0.01 %
•
Maximum working voltage: 300 V
•
Non inductive, non capacitive design
•
Rise time: 1 ns effectively no ringing
•
Current noise: < - 42 dB
•
Voltage coefficient < 0.1 ppm/V
•
Non inductive: < 0.08 µH
•
Non hot spot design
•
Terminal finish: lead (Pb)-free or tin/lead alloy
•
Matched sets are available per request
•
Compliant to RoHS directive 2002/95/EC
•
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishay.com
•
For better performances please review
Z201
and
S102C
Series datasheets
INTRODUCTION
Bulk Metal
®
Foil (BMF) technology out-performs all other
resistor technologies available today for applications that
require high precision and high stability, and allows
production of customer oriented products designed to satisfy
challenging and specific technical requirements.
The BMF provides an inherently low and predictable
Temperature Coefficient of Resistance (TCR) and excellent
load life stability for high precision analog applications.
Model VSH offers low TCR, excellent load life stability, tight
tolerance, excellent shelf life stability, low current noise and
low voltage coefficient, all in the same resistor.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us using the e-mail address in the footer below.
FIGURE 1 - STANDARD IMPRINTING AND
DIMENSIONS
in millimeters
L
T
Resistance value code
Tolerance
symbol
DATE CODE
92
20
YEAR WEEK
VSH1
9220
H
10K0
T TCR
25.4
(1.0 min.)
LS
Lead material #22 AWG (0.025 diameter)
solder coated copper
APPLICATIONS
•
•
•
•
•
•
•
•
•
Automatic test equipment (ATE)
High precision instrumentation
Laboratory, industrial and medical
Audio
EB applications (electron beam scanning and recording
equipment, electron microscopes)
Commercial aviation
Airborne
Down hole instrumentation
Communication
L
VSH1
VSC1
VSH2
VSC2
H
T
LS
5.08 ± 0.25
(0.200 ± 0.01)
3.81 ± 0.25
(0.150 ± 0.01)
5.08 ± 0.25
(0.200 ± 0.01)
3.81 ± 0.25
(0.150 ± 0.01)
5.8 ± 0.5
5.5 ± 1
2.2 ± 0.5
(0.228 ± 0.02) (0.216 ± 0.04) (0.086 ± 0.02)
6.7 ± 0.5
8±1
2.78 ± 0.5
(0.263 ± 0.02) (0.315 ± 0.04) (0.110 ± 0.02)
Note
• Letters H and C indicate a difference in lead spacing and -2 is an
extension range
Document Number: 63087
Revision: 04-May-09
For any questions, contact:
foil@vishay.com
www.vishay.com
1
VSH, VSC
Vishay Foil Resistors
TABLE 1 - TOLERANCE AND TCR VS. RESISTANCE VALUE
(- 55 °C to + 125 °C, + 25 °C Ref.)
RESISTOR
VSH2
VSC2
VSH1
VSC1
VSH1
VSC1
VSH1
VSC1
RESISTANCE VALUE
(Ω)
60K to 120K
80 to < 60K
50 to < 80
5 to < 50
TYPICAL TCR AND MAX. SPREAD
(ppm/°C)
± 2 ± 4.5
± 2 ± 4.5
± 2 ± 5.5
± 2 ± 6.5
TOLERANCE
(%)
± 0.01 %
± 0.01 %
± 0.02 %
± 0.05 %
TABLE 2 - PERFORMANCE SPECIFICATIONS
TEST
Moisture Resistance
Pressure Cooker Test
Short Time Overload
Resistance to Solder Heat
Terminal Strength
Insulation Resistance
Dielectric Withstanding Voltage
Thermal Shock
Shock
Vibration
Load Life Stability
Thermal EMF
Current Noise
Low Temperature Storage
Low Temperature Operation
High Temperature Exposure
CONDITIONS
MIL-STD-202, method 106
2 atmospheres absolute pressure,
121 °C, 100 % R.H. for 100 h
6.25 x P
nom
, 5 s
+ 260 °C, 20 s
2 lbs, 10 s
DC 100 V, 2 min
AC 300 V, 1 min
- 65 °C to + 150 °C, 5 cycles
MIL-STD-202, method 213, condition I
MIL-STD-202, method 204, condition D
0.3 W, + 70 °C, 2000 h
-
Quan-Tech
24 h at - 65 °C
45 min at - 65 °C
+ 150 °C
ΔR
(%) - TYPICAL
± 0.005
± 0.2
± 0.005
± 0.01
± 0.0025
> 10 000M
± 0.0025
± 0.01
± 0.005
± 0.01
± 0.01
0.07 µV/°C
- 42 dB
± 0.005
± 0.005
± 0.01
ΔR
(%) - MAXIMUM
± 0.03
± 0.4
± 0.05
± 0.03
± 0.03
> 10 000M
± 0.03
± 0.02
± 0.03
± 0.03
± 0.015
0.1 µV/°C
- 32 dB
± 0.01
± 0.01
± 0.03
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 3 - POWER DERATING CURVE
+ 70 °C
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Percent of Rated Power
100
75
50
Mutual Inductance
Reduction due
to Change in
Current Direction
25
0
- 75
- 50
- 25
0
+ 25
+ 50
+ 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
www.vishay.com
2
For any questions, contact:
foil@vishay.com
Document Number: 63087
Revision: 04-May-09
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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1
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