VSMP0603 (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Foil Wraparound Surface Mount Chip Resistor
with Temperature Coefficient of Resistance of ± 0.05 ppm/°C, Load
Life Stability to ± 0.005 % (50 ppm) and ESD Immunity up to 25 kV
FEATURES
Temperature coefficient of resistance (TCR):
0.05 ppm/°C typical (0 °C to + 60 °C)
0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
Tolerance: to ± 0.01 %
Power coefficient “R due to self heating”:
5 ppm at rated power
Power rating: to 100 mW at + 70 °C
Load life stability: to ± 0.005 % at 70 °C, 2000 h at rated
power
Resistance range: 100 to 5 k
Electrostatic discharge (ESD) up to 25 000 V
Short time overload:
0.005 %
Non inductive, non capacitive design
Rise time: 1 ns effectively no ringing
Special design which reduces circuit signal distortion
Current noise: - 40 dB
Voltage coefficient < 0.1 ppm/V
Non inductive: < 0.08 µH
Non hot spot design
Terminal finishes available: lead (Pb)-free
tin/lead alloy
Matched sets are available on request
Prototype samples available from 72 h. For more
information, please contact
foil@vishaypg.com
For better performances please contact us
Top View
Vishay Foil resistors are not restricted to standard
values, we can supply specific “as required” values at
no extra cost or delivery (e.g. 1K234 vs. 1K).
INTRODUCTION
VSMP series is the industry’s first device to provide high
rated power, excellent load life stability along with extremely
low TCR all in one resistor.
One of the most important parameters influencing stability is
the temperature coefficient of resistance (TCR). Although the
TCR of foil resistors is considered extremely low, this
characteristic has been further refined over the years. The
VSMP series utilizes ultra high precision Bulk Metal
®
Z-foil.
The Z-foil technology provides a significant reduction of the
resistive element's sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient). Along with the inherently low PCR and
TCR, Z-foil technology also provides remarkably improved
load life stability, low noise and availability of tight tolerance.
The VSMP0603 has a full wraparound termination which
ensures safe handling during the manufacturing process, as
well as providing stability during multiple thermal cyclings.
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.
APPLICATIONS
Automatic test equipment (ATE)
High precision instrumentation
Laboratory, industrial and medical
Audio
EB applications (electron beam scanning and recording
equipment, electron microscopes)
Down hole instrumentation
Communication
TABLE 1 - TOLERANCE AND TCR VS.
RESISTANCE VALUE
(1)
(- 55 °C to + 125 °C, + 25 °C ref.)
RESISTANCE
VALUE
()
250to 5K
100to < 250
TOLERANCE
(%)
± 0.01
± 0.02
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
± 0.2 ± 1.8
± 0.2 ± 1.8
FIGURE 1 - POWER DERATING CURVE
Percent of Rated Power
- 55 °C
100
75
50
25
0
- 75
+ 70 °C
Note
(1)
For tighter performances, please contact Vishay application
engineering using the e-mail address in the footer below.
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63141
Revision: 26-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
1
VSMP0603 (Z-Foil)
Vishay Foil Resistors
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 3 -TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
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
+ 100
ΔR
0
R
(ppm)
- 100
- 200
- 300
- 400
- 500
- 55
- 25
0
- 0.16 ppm/°C
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
+ 25
+ 60 + 75
+ 100 + 125
Mutual Inductance
Reduction due
to Opposing
Current in
Adjacent Lines
Ambient Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
Note
• The TCR values for < 100
are influenced by the termination
composition and result in deviation from this curve.
TABLE 2 - DIMENSIONS AND LAND PATTERN
in Inches (Millimeters)
Bottom View for Mounting
Uncoated
Ceramic
L
W
T
D
CHIP SIZE
0603
L
± 0.005 (0.13)
0.063 (1.60)
W
± 0.005 (0.13)
0.032 (0.81)
THICKNESS MAXIMUM
0.025 (0.64)
D
± 0.005 (0.13)
0.011 (0.28)
Note
• Land pattern dimensions are per IPC-782.
TABLE 3 - PERFORMANCES
TEST OR CONDITIONS
PER MIL-PRF-55342
Thermal shock:
100 x (- 65 °C to + 150 °C)
Low temperature operation:
- 65 °C, 45 min, rated power
Short time overload:
6.25 x rated power, 5 s
High temperature exposure: 100 h, 150 °C
Resistance to soldering heat
Moisture resistance
Load life stability + 70 °C for 2000 h
at rated power
MIL-PRF-55342
CHARACTERISTIC E
R
LIMITS
± 0.2 %
± 0.1 %
± 0.1 %
± 0.1 %
± 0.2 %
± 0.2 %
± 0.5 %
TYPICAL
R
LIMITS
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
± 0.01 % (100 ppm)
± 0.005 % (50 ppm)
± 0.03 % (300 ppm)
± 0.005 % (50 ppm)
MAXIMUM
R
LIMITS
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.03 % (300 ppm)
± 0.02 % (200 ppm)
± 0.1 % (1000 ppm)
± 0.01 % (100 ppm)
Note
• As shown + 0.01
to allow for measurement errors at low values.
www.foilresistors.com
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For any questions, contact:
foil@vishaypg.com
Document Number: 63141
Revision: 26-Mar-10
Legal Disclaimer Notice
Vishay Precision Group
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or incompleteness
contained herein or in any other disclosure relating to any product.
Vishay Precision Group 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 Precision Group’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 Precision Group.
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 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.
Document Number: 63999
Revision: 22-Feb-10
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