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,
Pb-free
Available
+ 25 °C Ref.) (see Table 1)
•
Tolerance: to ± 0.01 %
RoHS*
COMPLIANT
•
Power Rating: to 400 mW at + 70 °C
•
Load Life Stability: to ± 0.01 % at 70 °C, 2000
hours at Rated Power
•
Resistance Range: 10
Ω
to 150 kΩ (for higher and lower
values, please contact us)
•
Electrostatic Discharge (ESD) above 25 000 V
•
Short Time Overload:
≤
0.01 %
•
Non Inductive, Non Capacitive Design
•
Rise Time: 1 ns without ringing
•
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 per request
•
Any value available within resistance range (e.g. 1K2345)
•
Prototype samples available from 48 hours. For more
information, please contact foil@vishay.com
•
For better performances please review
VSMP
and
VFCP
Series datasheets
Top View
Any value at any tolerance within resistance range
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.
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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.
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
Percent of Rated Power
TYPICAL TCR AND
MAX. SPREAD
(ppm/°C)
±2±2
±2±3
±2±3
±2±4
±2±6
Note
1. For tighter performances, please contact Vishay Application
Engineering using the e-mail addresses in the footer below.
* Pb containing terminations are not RoHS compliant, exemptions may apply
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For any questions, contact: foil@vishay.com
Document Number: 63070
Revision: 24-May-07
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APPLICATIONS
•
•
•
•
•
•
•
•
•
Automatic Test Equipment (ATE)
High Precision Instrumentation
Laboratory, Industrial and Medical
Audio
EB Applications (electron beam scanning and recording
equipment, electron microscopes)
Military and Space
Airborne
Down Hole instrumentation
Communication
FIGURE 1 - POWER DERATING CURVE
- 55 °C
100
75
50
25
0
- 75
+ 70 °C
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
VSM Series (0805, 1206, 1506, 2010, 2512)
High Precision Foil Wraparound Surface
Vishay Foil Resistors
Mount Chip Resistor with TCR of ± 2 ppm/°C
and Load Life Stability of ± 0.01 % (100 ppm)
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 3 -TYPICAL TCR CURVE
(For more details, see Table 1)
+ 150
+ 100
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Note:
Foil shown in
black,
etched spaces in
white
TABLE 2 - DIMENSIONS AND LAND PATTERN
in inches (millimeters)
Bottom View for Mounting
Uncoated
L
Ceramic
W
D
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)
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)
THICKNESS
MAXIMUM
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
0.025 (0.64)
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Note
1. Land Pattern Dimensions are per IPC-782
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
TABLE 4 - PERFORMANCES
TEST OR CONDITIONS
Thermal Shock
MIL-PRF-55342
CHARACTERISTIC E
ΔR
LIMITS
± 0.1 %
± 0.1 %
± 0.1 %
± 0.1 %
Low Temperature Operation
Short Time Overload
High Temperature Exposure
Moisture Resistance
Resistance to Soldering Heat
Load Life Stability + 70 °C for 2000 hours at Rated Power
Note
1. As shown + 0.01
Ω
to allow for measurement errors at low values.
Document Number: 63070
Revision: 24-May-07
For any questions, contact: foil@vishay.com
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- 50
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 25
+ 50
+ 75
+ 100
+ 125
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
∆
R
+ 50
± 2 ppm/°C
(+ 25 °C reference)
0
R
(ppm)
Ambient Temperature (°C)
Note
• The TCR values for < 100
Ω
are influenced by the termination
composition and result in deviation from this curve.
Recommended Land Pattern
X
Footprint
G
Z
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)
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)
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
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)
± 0.2 %
± 0.2 %
± 0.5 %
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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)
TABLE 5 - DSCC SPECIFICATIONS
Vishay resistors are listed on the dollowing DSCC specifications
MODEL
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.
Avoid the
use
of
cleaning agents
which
could attack
epoxy resins,
which
form part of the
resistor construction.
FIGURE 4 - RECOMMENDED MOUNTING
DSCC
03010
06001
06002
MIL SPEC
MIL-PRF-55342
MIL-PRF-55342
MIL-PRF-55342
VSM1506
VSM2010
VSM2512
TABLE 6 - GLOBAL PART NUMBER INFORMATION
DENOTES PRECISION
Y
VALUE
R
=
Ω
K
= kΩ
NEW GLOBAL PART NUMBER: Y145512K7560T9R (preferred part number format)
Y
1
4
5
5
1
2
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 %
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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
12K756
TCR2
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
TCR
RESISTANCE VALUE CHARACTERISTICS
12.756 kΩ
VSM0805
VSM1206
VSM1506
VSM2010
VSM2512
Note
* For non-standard requests, please contact Application Engineering.
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For any questions, contact: foil@vishay.com
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Note
• For VSM0805 and VSM1206 DSCC drawings, please contact
foil@vishay.com
AER*
0
= Standard
9
= Lead (Pb)-free
1 - 999
= Custom
K
7
5
6
0
T
9
R
PACKAGING
R
= Tape and Reel
W
= Waffle Pack
Document Number: 63070
Revision: 24-May-07
Legal Disclaimer Notice
Vishay
Notice
Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,
or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's
terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express
or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness
for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify Vishay for any damages resulting from such improper use or sale.
Document Number: 91000
Revision: 08-Apr-05
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