VSM Series (0805, 1206, 1506, 2010, 2512)
Vishay Foil Resistors
High Precision Foil Wraparound Surface Mount Chip Resistor with
TCR of ± 2 ppm/°C and Load Life Stability of ± 0.01 % (100 ppm)
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 400 mW at + 70 °C
•
Load life stability: to ± 0.01 % at 70 °C, 2000 h
at rated power
•
Resistance range: 10
Ω
to 150 kΩ (for higher and lower
values, please contact us)
•
Vishay Foil resistors are not restricted to standard values,
we can supply specific “as required” values at no extra cost
or delivery (e.g. 1K2345 vs. 1K)
•
Fast thermal stabilization < 1 s
•
Electrostatic discharge (ESD) up to 25 000 V
•
Short time overload:
≤
0.01 %
•
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 finishes available: lead (Pb)-free
tin/lead alloy
•
Matched sets are available per request
•
Prototype samples available from 72 h. For more
information, please contact foil@vishay.com
•
For better performances please review
VSMP
and
VFCP
Series datasheets
Top View
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 VSM 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.
The VSM 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
(Ω)
250 to 150K
100 to < 250
50 to < 100
25 to < 50
10 to < 25
TOLERANCE
(%)
± 0.01
± 0.02
± 0.05
± 0.1
± 0.25
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
±2±2
±2±3
±2±3
±2±4
±2±6
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.
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63070
Revision: 01-Dec-08
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
For any questions, contact: foil@vishay.com
www.vishay.com
1
VSM Series (0805, 1206, 1506, 2010, 2512)
Vishay Foil Resistors
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 3 -TYPICAL TCR CURVE
(For more Details, see Table 1)
+ 150
+ 100
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
∆
R
+ 50
± 2 ppm/°C
(+ 25 °C reference)
0
R
(ppm)
- 50
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 25
+ 50
+ 75
+ 100
+ 125
Mutual Inductance
Reduction due
to Change in
Current Direction
Ambient Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
Note
• The TCR values for < 100
Ω
are influenced by the termination
composition and result in deviation from this curve.
TABLE 2 - DIMENSIONS AND LAND PATTERN
in Inches (Millimeters)
Top View
L
X
T
D
W
± 0.005 (0.13)
0.050 (1.27)
0.062 (1.57)
0.062 (1.57)
0.097 (2.46)
0.127 (3.23)
W
G
Z
Z
(1)
MAXIMUM
0.122 (3.10)
0.175 (4.45)
0.199 (5.05)
0.247 (6.27)
0.291 (7.39)
G
(1)
MINIMUM
0.028 (0.71)
0.059 (1.50)
0.083 (2.11)
0.115 (2.92)
0.150 (3.81)
X
(1)
MAXIMUM
0.050 (1.27)
0.071 (1.80)
0.071 (1.80)
0.103 (2.62)
0.127 (3.23)
Recommended Land Pattern
Footprint
CHIP SIZE
0805
1206
1506
2010
2512
L
± 0.005 (0.13)
0.080 (2.03)
0.126 (3.20)
0.150 (3.81)
0.198 (5.03)
0.249 (6.32)
THICKNESS
MAXIMUM
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
D
± 0.005 (0.13)
0.015 (0.38)
0.020 (0.51)
0.020 (0.51)
0.025 (0.64)
0.032 (0.81)
Note
(1)
Land Pattern Dimensions are per IPC-7351A
TABLE 3 - SPECIFICATIONS
CHIP SIZE
0805
1206
1506
2010
2512
RATED POWER (mW)
at + 70 °C
100
150
200
300
400
MAX VOLTAGE RATING
(≤
P
×
R
)
34 V
67 V
89 V
173 V
220 V
RESISTANCE RANGE
(Ω)
10 to 12K
10 to 30K
10 to 40K
10 to 100K
10 to 150K
MAXIMUM WEIGHT
(mg)
6
11
12
27
40
TABLE 4 - PERFORMANCES
TEST OR CONDITIONS
Thermal Shock
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Resistance to Soldering Heat
Moisture Resistance
Load Life Stability + 70 °C for 2000 h at Rated Power
MIL-PRF-55342
CHARACTERISTIC E
ΔR
LIMITS
± 0.1 %
± 0.1 %
± 0.1 %
± 0.1 %
± 0.2 %
± 0.2 %
± 0.5 %
TYPICAL
ΔR
LIMITS
± 0.005 % (50 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
MAXIMUM
ΔR
LIMITS
(1)
± 0.02 % (200 ppm)
± 0.02 % (200 ppm)
± 0.02 % (200 ppm)
± 0.03 % (300 ppm)
± 0.01 % (100 ppm)
± 0.03 % (300 ppm)
± 0.01 % (100 ppm)
Note
(1)
As shown + 0.01
Ω
to allow for measurement errors at low values.
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For any questions, contact: foil@vishay.com
Document Number: 63070
Revision: 01-Dec-08
VSM Series (0805, 1206, 1506, 2010, 2512)
Vishay Foil Resistors
(1)(2)(3)
FIGURE 4 - RECOMMENDED MOUNTING
25
%
to
85 %
of T
A low profile solder fillet is
recommended to avoid
unnecessary
stresses along top edge of
metallization. IR and
vapor
phase
reflow are
best.
Notes
(1)
Avoid the use of cleaning agents which could attack epoxy resins, which form part of the resistor construction
(2)
Vacuum pick up is recommended for handling
(3)
Soldering iron may damage the resistor
TABLE 5 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y145512K7560T9R (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
Ω
K
= kΩ
AER
(1)
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
Y
1
4
5
5
1
2
K
7
5
6
0
T
9
R
PRODUCT CODE
1172
= VSM0805
1496
= VSM1206
1455
= VSM1506
1611
= VSM2010
1612
= VSM2512
RESISTANCE TOLERANCE
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
R
= tape and reel
W
= waffle pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1455 12K7565 T 9 R:
TYPE: VSM1506
VALUES: 12.7560 kΩ
ABSOLUTE TOLERANCE: 0.01 %
TERMINATION: lead (Pb)-free
PACKAGING: tape and reel
HISTORICAL PART NUMBER: VSM1506 12K756 TCR2 T S T (will continue to be used)
VSM1506
MODEL
VSM0805
VSM1206
VSM1506
VSM2010
VSM2512
12K756
RESISTANCE VALUE
12.756 kΩ
TCR2
TCR
CHARACTERISTICS
T
TOLERANCE
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
S
TERMINATION
S
= lead (Pb)-free
B
= tin/lead
T
PACKAGING
T
= tape and reel
W
= waffle pack
Note
(1)
For non-standard requests, please contact application engineering.
Document Number: 63070
Revision: 01-Dec-08
For any questions, contact: foil@vishay.com
www.vishay.com
3
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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