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
VSH, VSC
Vishay Foil Resistors
Document Number: 63087 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 25-Mar-10 1
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.
Note
• Letters H and C indicate a difference in lead spacing and -2 is an
extension range
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@vishaypg.com
•For better performances please review Z201 and S102C
Series datasheets
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
FIGURE 1 - STANDARD IMPRINTING AND
DIMENSIONS in millimeters
LHTLS
VSH1
5.8 ± 0.5
(0.228 ± 0.02)
5.5 ± 1
(0.216 ± 0.04)
2.2 ± 0.5
(0.086 ± 0.02)
5.08 ± 0.25
(0.200 ± 0.01)
VSC1
3.81 ± 0.25
(0.150 ± 0.01)
VSH2
6.7 ± 0.5
(0.263 ± 0.02)
8 ± 1
(0.315 ± 0.04)
2.78 ± 0.5
(0.110 ± 0.02)
5.08 ± 0.25
(0.200 ± 0.01)
VSC2
3.81 ± 0.25
(0.150 ± 0.01)
VSH1
9220 10K0
T TCR
Resistance value code
Tolerance
symbol
T
H
25.4
(1.0 min.)
LS
L
DATE CODE
92 20
YEAR WEEK
Lead material #22 AWG (0.025 diameter)
solder coated copper
VSH, VSC
Vishay Foil Resistors
www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63087
2Revision: 25-Mar-10
TABLE 1 - TOLERANCE AND TCR VS. RESISTANCE VALUE (- 55 °C to + 125 °C, + 25 °C Ref.)
RESISTOR RESISTANCE VALUE
(Ω)
TYPICAL TCR AND MAX. SPREAD
(ppm/°C)
TOLERANCE
(%)
VSH2
VSC2 60K to 120K ± 2 ± 4.5 ± 0.01 %
VSH1
VSC1 80 to < 60K ± 2 ± 4.5 ± 0.01 %
VSH1
VSC1 50 to < 80 ± 2 ± 5.5 ± 0.02 %
VSH1
VSC1 5 to < 50 ± 2 ± 6.5 ± 0.05 %
TABLE 2 - PERFORMANCE SPECIFICATIONS
TEST CONDITIONS ΔR (%) - TYPICAL ΔR (%) - MAXIMUM
Moisture Resistance MIL-STD-202, method 106 ± 0.005 ± 0.03
Pressure Cooker Test 2 atmospheres absolute pressure,
121 °C, 100 % R.H. for 100 h ± 0.2 ± 0.4
Short Time Overload 6.25 x Pnom, 5 s ± 0.005 ± 0.05
Resistance to Solder Heat + 260 °C, 20 s ± 0.01 ± 0.03
Terminal Strength 2 lbs, 10 s ± 0.0025 ± 0.03
Insulation Resistance DC 100 V, 2 min > 10 000M > 10 000M
Dielectric Withstanding Voltage AC 300 V, 1 min ± 0.0025 ± 0.03
Thermal Shock - 65 °C to + 150 °C, 5 cycles ± 0.01 ± 0.02
Shock MIL-STD-202, method 213, condition I ± 0.005 ± 0.03
Vibration MIL-STD-202, method 204, condition D ± 0.01 ± 0.03
Load Life Stability 0.3 W, + 70 °C, 2000 h ± 0.01 ± 0.015
Thermal EMF - 0.07 µV/°C 0.1 µV/°C
Current Noise Quan-Tech - 42 dB - 32 dB
Low Temperature Storage 24 h at - 65 °C ± 0.005 ± 0.01
Low Temperature Operation 45 min at - 65 °C ± 0.005 ± 0.01
High Temperature Exposure + 150 °C ± 0.01 ± 0.03
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
Before Trimming
Note: Foil shown in black, etched spaces in white
Interloop Capacitance
Reduction in Series
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Current Path
After Trimming
FIGURE 3 - POWER DERATING CURVE
100
75
50
25
0
- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
Percent of Rated Power
+ 70 °C
properties described in the product specification is suitable for use in a particular application.No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by
any conduct of Vishay Precision Group.
The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise
expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use
in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any
damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group 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.
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Document No.: 63999
Revision: 27-Apr-11
