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71
S Series
Vishay Foil Resistors
Document Number: 63001
Revision 31-Jan-05
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SALES
Bulk Metal® Foil Technology
High-Performance Aerospace and Instrumentation Resistors
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, products based on this technology are the most
suitable for a wide range of applications. BMF technology
allows us to produce customer orientated products designed
to satisfy challenging and specific technical requirements.
Model S Series made from Vishay BMF offers extremely 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.
Vishay Bulk Metal® S Series are the modern generation of
precision resistors, their design gives you a unique
combination of characteristics found in no other single
resistor- and they’re all standard.
Our Application Engineering Department is prepared to
advise and to make recommendation for non-standard
technical requirements and special applications, please
contact us.
APPLICATIONS
• High Precision Amplifiers
• High Precision Instrumentation
• Medical and Test Equipment
• Industrial
• Audio (High End Stereo Equipment)
• EB Applications (electron beam scanning and recording
equipment, electron microscopes)
• Military, Airborne
• Measurement Instrumentation
FEATURES
•Very low Temperature Coefficient of Resistance (TCR): *
- 55 °C to + 125 °C, 25 °C Ref
- S102C Series: ± 2 ppm/°C nominal, ± 4.5 ppm/°C maximum
- S102K Series: ± 1 ppm/°C nominal, ± 2.5 ppm/°C maximum
• Very Low TCR Tracking: to 0.5 ppm/°C
• Excellent Load Life Stability: to ± 0.005% at 70°C, 2000hrs
• Very Tight Tolerance: ± 0.005%
• Resistance Range: 0.5Ω to 1MΩ
• Excellent Shelf Life Stability:
to Maximum 0.0025 %, 1year
• High Rated Power: to 2W at +125 °C
• Low Voltage Coefficient: (see table 2)
• Non Inductive: (see table 2)
• Low Current Noise: (see table 2) “Noise Free Component”
• Rise/Decay Time: (see table 2)
• Low Thermal EMF: (see table 2)
• Terminal Finishes Available:
Lead (Pb)-free (Sn 100%)
Tin/Lead Alloy (Sn 60%, Pb 40%)
* For values below 50Ω please contact Application Engineering
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Document Number: 63001
Revision 31-Jan-05
www.vishay.com
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S Series
Vishay Foil Resistors
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SALES
*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. This is to allow for proper cleaning of flux and other contaminants from the
unit after all soldering processes.
FIGURE 1 - STANDARD IMPRINTING AND DIMENSIONS
TABLE 1 - MODEL SELECTION
MODEL RESISTANCE MAXIMUM AMBIENT AVERAGE DIMENSIONS
NUMBER RANGE WORKING POWER RATING WEIGHT
(Ω) VOLTAGE @+70°C @+125°C IN GRAMS INCHES mm *F (INCHES)
S102C 1 to 150K 300 0.6 W 0.3 W 0.6
W: 0.105 ± 0.010 2.67 ± 0.25
up to 100K L: 0.300 ± 0.010 7.62 ± 0.25
H: 0.326 ± 0.010 8.28 ± 0.25
ST: 0.010
Minimum
0.254 Minimum
S102K 1 to 100K 0.4 W 0.2 W SW: 0.040 ± 0.005 1.02 ± 0.13
over 100K LL: 1.000 ± 0.125 25.4 ± 3.18
LS: 0.150 ± 0.005
4
3.81 ± 0.13
S104D (S104F*) 1 to 500K 350 1.0 W 0.5 W 1.4 W: 0.160
Maximum
4.06 Maximum
(0.138)
up to 200K L: 0.575
Maximum
14.61 Maximum
(0.565)
H: 0.413
Maximum
10.49 Ma ximum
(0.413)
ST: 0.035 ± 0.005 0.889 ± 0.13
S104K 1 to 300K 0.6 W 0.3 W SW: 0.050 ± 0.005 1.27 ± 0.13
over 200K LL: 1.000 ± 0.125 25.4 ± 3.18
LS: 0.400 ± 0.020 10.16 ± 0.51
S105D (S105F*) 1 to 750K 350 1.5 W 0.75 W 1.9 W: 0.160
Maximum
4.06 Maximum
(0.138)
up to 300K L: 0.820
Maximum
20.83
Maximum
(0.890)
H: 0.413
Maximum
10.49
Maximum
(0.413)
ST: 0.035 ± 0.005 0.889 ± 0.13
S 105K 1 to 500K 0.8 W 0.4 W SW: 0.050 ± 0.005 1.27 ± 0.13
over 300K LL: 1.000 ± 0.125 25.4 ± 3.18
LS: 0.650 ± 0.020 16.51 ± 0.51 (0.7 ± 0.02)
S106D 0.5 to 1M 500 2.0 W 1.0 W 4.0 W: 0.260
Maximum
6.60 Maximum
up to 400K L: 1.200
Maximum
30.48 Maximum
H: 0.413
Maximum
10.49 Maximum
ST: 0.035 ± 0.005 0.889 ± 0.13
S106K 0.5 to 600K 1.0 W 0.5 W SW: 0.050 ± 0.005 1.27 ± 0.13
over 400K LL: 1.000 ± 0.125 25.4 ± 3.18
LS: 0.900 ± 0.020 22.86 ± 0.51
*S104F and S105F have different package dimensions (see last
column). All other specifications are the same.
**0.200” (5.08mm) lead spacing available - specify S102J for
S102C, and S102L for S102K.
Note its minor outline dimensions variations:
TIGHTEST TOLERANCE%
VS. LOWEST
RESISTANCE VALUE
Ω
± 0.005 / 50
± 0.01 / 25
± 0.02 / 12
± 0.05 / 5
± 0.1 / 2
± 0.5 / 1
INCHES mm
W: 0.098 Maximum 2.49 Maximum
L: 0.295 Maximum 7.49 Maximum
H: 0.315 Maximum 8.00 Maximum
ST: 0.01 Minimum 0.254 Minimum
LL: 0.875 Minimum 22.23 Minimum
LS 0.200 ± 0.003 5.08 ± 0.076
FIG 2 - POWER DERATING CURVE "S" SERIES
200%
175%
150%
125%
100%
75%
50%
25%
0
–75 –50 –25 0 +25 +50 +75 +100 +125 +150 +175 +200
Ambient Temperature (°C)
Percent of Rated Power @ +125°C
–55°C+70°C
Double Rated Power
Rated Power
Safe operation
for <150 ppm
∆R after 2,000
hours load-life.
LS
Model Number
VISHAY
XXXX
S102C
ST*
H
L
Date Code
W
Front View Rear 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
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
www.vishay.com
73
S Series
Vishay Foil Resistors
Document Number: 63001
Revision 31-Jan-05
THROUGH HOLE
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SALES
Stability1
Load Life at 2,000 hours.
Load Life at 10,000 hours.
Shelf Life Stability
Current Noise
High Frequency Operation
Rise/Decay Time
Inductance (L)2
Capacitance (C)
Voltage Coefficient
Thermal EMF4
± 0.015% Maximum ∆R @ 0.3W/+ 125°C
± 0.005% Maximum ∆R @ 0.1W/+ 70°C
± 0.05% Maximum ∆R @ 0.3W/+ 125°C
± 0.01% Maximum ∆R @ 0.05W/+ 125°C
± 0.0025% Maximum ∆R after 1 year
± 0.005% Maximum ∆R after 3 years
0.010µV (RMS)/Volt of applied voltage (–40dB)
1.0ns at 1KΩ
0.1µH maximum; 0.08µH typical
1.0pF maximum; 0.5pF typical
< 0.1ppm/V3
0.1µV/°C Maximum; 0.05µV/°C typical
1µV/watt (Model S102C)
Bulk Metal® Foil Technology
High-Performance Aerospace and Instrumentation Resistors
TABLE 2 - “S” SERIES SPECIFICATIONS
1. Load life ∆R Maximum can be reduced by 80% through an optional burn-in
procedure.
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.
Specify Vishay S Series resistors as follows:
Example: V = ± 0.005%
T = ± 0.01%
Q = ± 0.02%
A = ± 0.05%
B = ± 0.1%
C = ± 0.25%
T = Lead (Pb)-free D = ± 0.5%
S102C none = Tin/Lead alloy 250R00 F = ± 1.0%
MODEL NO. TERMINATION RESISTANCE VALUE TOLERANCE
Resistance Value, in ohms, is expressed by a series of 6 characters, 5 of which represent significant digits while the 6th is
a dual purpose letter that designates both the multiplier and the location of the comma or decimal.
TABLE 3 - ORDERING INFORMATION
RESISTANCE LETTER MULTIPLIER EXAMPLE
RANGE DESIGNATOR FACTOR
10Ω to <1KΩR x 1 100R01 = 100.01Ω
1KΩ to 100KΩK x 103 5K2310 = 5,231Ω
For example: S102C T 250R00 V - Model: S102C; Termination: lead (Pb)-free; Value: 250Ω; Tolerance: 0.005%
For technical questions in the Americas, contact foilsupport1@vishay.com
For technical questions in Asia/Japan/Europe/Africa/Israel, contact foilsupport2@vishay.com
Document Number: 63001
Revision 31-Jan-05
www.vishay.com
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S Series
Vishay Foil Resistors
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SALES
MIL-PRF-55182 S-SERIES S-SERIES
CHAR J MAXIMUM ∆R TYPICAL ∆R
Test Group I
Thermal Shock ± 0.2% ± 0.01% ± 0.002%
Overload ± 0.2% ± 0.01% ± 0.003%
Test Group II
Resistance Temperature ± 25ppm/°C + 4.5ppm/°C
Characteristic
Low Temp Storage ± 0.15% ± 0.01% ± 0.005%
Low Temp Operation ± 0.15% ± 0.01% ± 0.005%
Terminal Strength ± 0.2% ± 0.01% ± 0.002%
Test Group III
DWV ± 0.15% ± 0.01% ± 0.005%
Resistance to Solder Heat ± 0.1% ± 0.01% ± 0.002%
Moisture Resistance ± 0.4% ± 0.05% ± 0.02%
Test Group IV
Shock ± 0.2% ± 0.01% ± 0.002%
Vibration ± 0.2% ± 0.01% ± 0.002%
Test Group V
Life Test @ 0.3 W/+125°C
2,000 Hours ± 0.5% ± 0.015% ± 0.01%
10,000 Hours ± 2.0% ± 0.05% ± 0.03%
Test Group Va
+70°C Power Rating ± 0.5% ±0.1% ± 0.05%
Test Group VI
High Temperature Exposure ± 2.0% ± 0.1% ± 0.05%
Test Group VII
Voltage Coefficient 0.005%/V < 0.00001%/V < 0.00001%/V
STANDARD OPERATIONS & TEST CONDITIONS
A. Standard Test Operations:
By 100% Inspection
• Short-time overload (6.25 x rated power for 5 seconds)
• 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: + 22°C ± 2°C
• Relative humidity: per MIL-Std-202
IMPROVED PERFORMANCE TESTING
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 users stabilty
objectives and product that has been screened can be
brought down to a potential load life of less than 50ppm.
Various screen test routines are available and all anticipated
stresses must be taken into account before settling on one
specific test routine. Our Applications Engineering
Department is prepared to discuss and recommend
appropriate routines given the full spectrum of anticipated
stresses and stability requirements.
TABLE 4 - ENVIRONMENTAL PERFORMANCE COMPARISON
Bulk Metal® Foil Technology
High-Performance Aerospace and Instrumentation Resistors
Legal Disclaimer Notice
Vishay
Document Number: 91000 www.vishay.com
Revision: 08-Apr-05 1
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.
