High Precision Foil Resistor with TCR of ± 2.0 ppm/°C,
Tolerance of ± 0.005 % and Load Life Stability of ± 0.005 %
Document Number: 63001 For any questions, contact www.vishayfoilresistors.com
Revision: 02-Mar-15 foil@vpgsensors.com 1
S Series
INTRODUCTION
Bulk Metal® Foil (BMF) technology outperforms all other
resistor technologies available today for applications that
require high precision and high stability.
This technology has been pioneered and developed by
Vishay Foil Resistors (VFR), and products based on this
technology are the most suitable for a wide range of
applications. BMF technology allows the production of
customer-oriented products, designed to satisfy specific
challenging technical requirements.
The S series of BMF resistors offers low TCR, excellent load
life stability, tight tolerance, fast response time, low current
noise, low thermal EMF and low voltage coefficient, all in one
resistor.
The S series is virtually insensitive to destabillizing factors.
The resistor element is a solid alloy that displays the
desirable bulk properties of its parent material, thus it is
inherently stable and noise free. The standard design of
these resistors provides a unique combination of
characteristics found in no other single resistor.
VFR's application engineering department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact foil@vpgsensors.com.
TABLE 1 - RESISTANCE VERSUS TCR
(- 55 °C to + 125 °C, + 25 °C ref.)
RESISTOR(1) (2) RESISTANCE
VALUE ()
TYPICAL TCR AND
MAX SPREAD
(ppm/°C)
S10X(C) / (D) 80 to < 1M ± 2 ± 2.5
S10X(K) 80 to < 600K ± 1 ± 2.5
S10X(C) / (D) 50 to < 80 ± 2 ± 3.5
S10X(K) ± 1 ± 3.5
S10X(C) / (D) 0.5 to < 50 ± 2 ± 4.5
S10X(K) ± 1 ± 4.5
FEATURES
Temperature coefficient of resistance (TCR):
- 55 °C to + 125 °C, 25 °C ref.
- S10
X
C / D series: ± 2 ppm/°C typical (see table
1)
- S10
X
K series: ± 1 ppm/°C typical (see table 1)
Power rating: to 1 W at + 125 °C
Resistance tolerance: to ± 0.005 % (50 ppm)
Load life stability: ± 0.005 % at 70 °C, 2000 h at rated power
Resistance range: 0.5
to 1 M
(for higher or lower
values, please contact Application Engineering)
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)
Electrostatic discharge (ESD) at least to 25 kV
Non inductive, non capacitive design
Rise time: 1 ns effectively no ringing
Current noise: 0.010 µV
RMS
/V of applied voltage (< - 40 dB)
Thermal EMF: 0.05 µV/°C
Voltage coefficient: < 0.1 ppm/V
Low inductance: < 0.08 µH
Non hot-spot design
Terminal finishes available: lead (Pb)-free, tin/lead alloy
Matched sets are available on request
(TCR tracking: to 0.5 ppm/°C)
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vpgsensors.com
For better TCR performances please review the
datasheets for the Z Series and Z203
FIGURE 1 - TYPICAL RESISTANCE CHANGE
VERSUS TEMPERATURE CURVES AND
CHORD SLOPES (TCR) OF TWO ALLOY
TYPES IN MILITARY RANGE
- 50 - 25 0 + 25 + 50 + 75 + 100 + 125
- 55
C Alloy
2 ppm/°C
K Alloy
1 ppm/°C
+1 ppm/°C
–1 ppm/°C
–2 ppm/°C
+2 ppm/°C
+ 150
+ 100
+ 50
0
- 50
- 100
- 150
- 200
ΔR
R
(ppm)
Temperature (°C)
(1) X refers to S Series model number - see Table 2
(2) (C) and (D) refer to C Foil Alloy Types; (K) refers to the K Foil Alloy type - see Figure 1
* Pb containing terminations are not RoHS compliant, exemptions may apply
FIGURE 2 - STANDARD IMPRINTING AND DIMENSIONS
LS
Model Number
VFR
XXXX
S102C
ST1)
H
L
Date Code
W
Front ViewRear View
Lead Material #22 AWG
Round Solder Coated Copper
Optional Customer Part Number
Print specification, etc. if required
Resistance
Value Code
Tolerance
XXXXXX
100R01
0.01 %
LL
SW
10
Week
01
Year
(Pb - free coating available)
Note
1. Standoffs provided to allow proper flushing of flux, debris, and contaminates from under resistor after all solder operations.
2. The standoffs shall be so located as to give a lead clearance of 0.010" minimum between the resistor body and the printed circuit board
when the standoffs are seated on the printed circuit board.
TABLE 2 - MODEL SELECTION
MODEL
NUMBER
RESISTANCE
RANGE
()
MAXIMUM
WORKING
VOLTAGE
AMBIENT
POWER RATING AVERAGE
WEIGHT
IN GRAMS
DIMENSIONS TIGHTEST
TOLERANCE
VS. LOWEST
RESISTANCE
VALUE
at
+ 70 °C
at
+ 125 °C INCHES mm F (1)
(INCHES)
S102C
(S102J) (2) 1 to 150K
300
0.6 W 0.3 W
0.6
W: 0.105 ± 0.010
L: 0.300 ± 0.010
H: 0.326 ± 0.010
ST: 0.010 min.
SW: 0.040 ± 0.005
LL: 1.000 ± 0.125
LS: 0.150 ± 0.005
2.67 ± 0.25
7.62 ± 0.25
8.28 ± 0.25
0.254 min.
1.02 ± 0.13
25.4 ± 3.18
3.81 ± 0.13
0.005 %/50
0.01 %/25
0.02 %/12
0.05 %/5
0.1 %/2
0.50 %/1
1 %/0.5
up to 100K
S102K
(S102L) (2) 1 to 100K
0.4 W 0.2 W
over 100K
S104D
(S104F) (1) 1 to 500K
350
1.0 W 0.5 W
1.4
W: 0.160 max.
L: 0.575 max.
H: 0.413 max.
ST: 0.035 ± 0.005
SW: 0.050 ± 0.005
LL: 1.000 ± 0.125
LS: 0.400 ± 0.020
4.06 max.
14.61 max.
10.49 max.
0.889 ± 0.13
1.27 ± 0.13
25.4 ± 3.18
10.16 ± 0.51
(0.138)
(0.565)
(0.413)
up to 200K
S104K 1 to 300K
0.6 W 0.3 W
over 200K
S105D
(S105F) (1) 1 to 750K
350
1.5 W 0.75 W
1.9
W: 0.160 max.
L: 0.820 max.
H: 0.413 max.
ST: 0.035 ± 0.005
SW: 0.050 ± 0.005
LL: 1.000 ± 0.125
LS: 0.650 ± 0.020
4.06 max.
20.83 max.
10.49 max.
0.889 ± 0.13
1.27 ± 0.13
25.4 ± 3.18
16.51 ± 0.51
(0.138)
(0.890)
(0.413)
(0.7 ± 0.05)
up to 300K
S105K 1 to 500K
0.8 W 0.4 W
over 300K
S106D 0.5 to 1M
500
2.0 W 1.0 W
4.0
W: 0.260 max.
L: 1.200 max.
H: 0.413 max.
ST: 0.035 ± 0.005
SW: 0.050 ± 0.005
LL: 1.000 ± 0.125
LS: 0.900 ± 0.020
6.60 max.
30.48 max.
10.49 max.
0.889 ± 0.13
1.27 ± 0.13
25.4 ± 3.18
22.86 ± 0.51
up to 400K
S106K 0.5 to 600K
1.0 W 0.5 W
over 400K
www.vishayfoilresistors.com For any questions, contact Document Number: 63001
2 foil@vpgsensors.com Revision: 02-Mar-15
S Series
Notes
(1) S104F and S105F have different package dimensions (see the third column of dimensions). All other specifications are the same.
(2) 0.200" (5.08 mm) lead spacing available - specify S102J for S102C, and S102L for S102K.
FIGURE 3 - POWER DERATING CURVE
200 %
175 %
150 %
125 %
100 %
75 %
50 %
25 %
0 %
- 75
Ambient Temperature (°C)
Percent of Rated Power at + 125 °C
- 55 °C
Double Rated Power
Rated Power
2001751501251007550250- 25- 50
+ 70 °C
Document Number: 63001 For any questions, contact www.vishayfoilresistors.com
Revision: 02-Mar-15 foil@vpgsensors.com 3
S Series
FIGURE 4 - 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
TABLE 3 - ENVIRONMENTAL PERFORMANCE COMPARISON
MIL-PRF-55182
CHAR J
S-SERIES
MAXIMUM R
S-SERIES
TYPICAL R
Test Group I
Thermal shock, 5 x (- 65 °C to + 150 °C) ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Short time overload, 6.25 x rated power ± 0.2 % ± 0.01 % (100 ppm) ± 0.003 % (30 ppm)
Test Group II
Resistance temperature characteristics(1) ± 25 ppm/°C ± 6.5 ppm/°C ± 2.0 ppm/°C
Low temperature storage (24 h at - 65 °C) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Low temperature operation
(45 min, rated power at - 65 °C) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Terminal strength ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Test Group III
Dielectric Withstanding Voltage (DWV) ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Resistance to solder heat ± 0.1 % ± 0.01 % (100 ppm) ± 0.005 % (50 ppm)
Moisture resistance ± 0.4 % ± 0.05 % (500 ppm) ± 0.01 % (100 ppm)
Test Group IV
Shock ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Vibration ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Test Group V
Life test at 0.3 W/+ 125 °C
2000 h ± 0.5 % ± 0.015 % (150 ppm) ± 0.01 % (100 ppm)
10 000 h ± 2.0 % ± 0.05 % (500 ppm) ± 0.03 % (300 ppm)
Test Group Va
Life test at 0.6 W (2 x rated power)/+ 70 °C, 2000 h ± 0.5 % ± 0.015 % (150 ppm) ± 0.01 % (100 ppm)
Test Group VI
High temperature exposure (2000 h at + 175 °C) ± 2.0 % ± 0.1 % (1000 ppm) ± 0.05 % (500 ppm)
Test Group VII
Voltage coefficient 5 ppm/V < 0.1 ppm/V < 0.1 ppm/V
(1) See Table 1.
FIGURE 5 - LONG-TERM STABILITY OVER 29 YEARS (0.1W AT 70°C, 50 SAMPLES S102C,
10K)
ΔR/R (ppm)
Time (Years)
40
20
0
-20
-40
-60
-80
-100
-120
0 5 10 15 20 25 30
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S Series
STANDARD OPERATIONS AND TEST
CONDITIONS
A. Standard Test Operations:
By 100 % Inspection
Short-time overload (6.25 x rated power for 5 s)
Resistance - tolerance check
Visual and mechanical
By Sample Inspection
TCR
Environmental tests per table 3 on a quarterly basis to
establish performance by similarity
B. Standard Test Conditions:
Lead test point: 0.5" (12.7 mm) from resistor body
Temperature: + 23 °C ± 2 °C
Relative humidity: per MIL-STD-202
IMPROVED PERFORMANCE TESTING (IPT)
The preceding information is based on product directly off
the production line. Improved performance (meaning
increased time stability with load and other stresses) is
available through factory conducted “Improved Performance
Testing”. The test routine is usually tailored to the user’s
stability objectives and IPT-processed resistors can exhibit
improved load-life stability levels of less than 50 ppm.
Various screen test routines are available and all anticipated
stresses must be taken into account before settling on one
specific test routine. VFR's application engineering
department is prepared to discuss and recommend
appropriate routines given the full spectrum of anticipated
stresses and stability requirements.
TABLE 4 - “S” SERIES SPECIFICATIONS
Stability (1)
Load life at 2000 h ± 0.015 % (150 ppm) Maximum R at 0.3 W/+ 125 °C
± 0.005 % (50 ppm) Maximum R at 0.1 W/+ 70 °C
Load life at 10 000 h ± 0.05 % (500 ppm) Maximum R at 0.3 W/+ 125 °C
± 0.01 % (100 ppm) Maximum R at 0.05 W/+ 125 °C
Current Noise 0.010 µV (RMS)/V of applied voltage (- 40 dB)
High Frequency Operation
Rise time 1.0 ns at 1 k
Inductance (L) (2) 0.1 µH maximum; 0.08 µH typical
Capacitance (C) 1.0 pF maximum; 0.5 pF typical
Voltage Coefficient < 0.1 ppm/V (3)
Thermal Electromotive Force (EMF) (4) 0.1 µV/°C Maximum; 0.05 µV/°C typical
1 µV/W (Model S102C)
Notes
(1) Load life R maximum can be reduced by 80 %, please contact applications engineering department.
(2) Inductance (L) due mainly to the leads.
(3) The resolution limit of existing test equipment (within the measurement capability of the equipment, or “essentially zero”.)
(4) µV/°C relates to EMF due to lead temperature difference and µV/watt due to power applied to the resistor.
TABLE 5 - GLOBAL PART NUMBER INFORMATION (1)
NEW GLOBAL PART NUMBER: Y000780K5000V9L (preferred part number format)
DENOTES PRECISION VALUE CHARACTERISTICS
Y R =
K = k
M = M
0 = standard
9 = lead (Pb)-free
1 to 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
0007 = S102C
0785 = S102J
0062 = S102K
0786 = S102L
0011 = S104D
5011 = S104F
0101 = S104K
4101 = S104L
0012 = S105D
4012 = S105F
0102 = S105K
4102 = S105L
0013 = S106D
0103 = S106K
V = ± 0.005 %
T = ± 0.01 %
Q = ± 0.02 %
A = ± 0.05 %
B = ± 0.1 %
C = ± 0.25 %
D = ± 0.5 %
F = ± 1.0 %
L = bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0007 80K5000 V 9 L:
TYPE: S102C
VALUE: 80.5 k
ABSOLUTE TOLERANCE: ± 0.005 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: S102C T 80K500 V B (will continue to be used)
S102C T80K500 V B
MODEL TERMINATION RESISTANCE VALUE TOLERANCE PACKAGING
S102C
S102J
S102K
S102L
S104D
S104F
S104K
S104L
S105D
S105F
S105K
S105L
S106D
S106K
T = lead (Pb)-free
None = tin/lead alloy
250R00 = 250.00
5K2310 = 5.231 k
1M000 = 1 M
V = ± 0.005 %
T = ± 0.01 %
Q = ± 0.02 %
A = ± 0.05 %
B = ± 0.1 %
C = ± 0.25 %
D = ± 0.5 %
F = ± 1.0 %
B = bulk pack
Document Number: 63001 For any questions, contact www.vishayfoilresistors.com
Revision: 02-Mar-15 foil@vpgsensors.com 5
S Series
Note
(1) For non-standard requests, please contact application engineering.
0078 K500Y0 V90 L0
Vishay Precision Group, Inc.
www.vpgsensors.com
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Document No.: 63999
Revision: 15-Jul-2014
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