S Series
Vishay Foil Resistors
High Precision Foil Resistor with TCR of ± 2.0 ppm/°C,
Tolerance of ± 0.005 % and Load Life Stability of ± 0.005 %
FEATURES
•
Temperature coefficient of resistance (TCR):
- 55 °C to + 125 °C, 25 °C ref.
- S10XC / D series: ± 2 ppm/°C typical (see table
1)
- S10
XK 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
values, please contact Application Engineering)
Ω to 1 MΩ (for higher or lower
INTRODUCTION
• 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)
Bulk Metal® Foil (BMF) technology outperforms all other
resistor technologies available today for applications that
require high precision and high stability.
• Electrostatic discharge (ESD) at least to 25 kV
•
Non inductive, non capacitive design
• Rise time: 1 ns effectively no ringing
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.
•
•
•
•
•
Current noise: 0.010 µVRMS/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
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.
•
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@vishaypg.com
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
• For better TCR performances please review the
datasheets for the Z Series and Z203
these resistors provides
a
unique combination of
characteristics found in no other single resistor.
FIGURE 1 - TYPICAL RESISTANCE CHANGE
VERSUS TEMPERATURE CURVES AND
CHORD SLOPES (TCR) OF TWO ALLOY
TYPES IN MILITARY RANGE
VFR's application engineering department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact foil@vishaypg.com.
+ 150
+ 100
TABLE 1 - RESISTANCE VERSUS TCR
–1 ppm/°C
+2 ppm/°C
+1 ppm/ C
(- 55 °C to + 125 °C, + 25 °C ref.)
°
+ 50
0
ΔR
TYPICAL TCR AND
MAX SPREAD
(ppm/°C)
RESISTANCE
VALUE (Ω)
R
RESISTOR(1) (2)
(ppm)
- 50
S10X(C) / (D)
S10X(K)
80 to < 1M
± 2 ± 2.5
± 1 ± 2.5
± 2 ± 3.5
± 1 ± 3.5
± 2 ± 4.5
± 1 ± 4.5
- 100
- 150
- 200
–2 ppm/°C
80 to < 600K
S10X(C) / (D)
S10X(K)
50 to < 80
0.5 to < 50
- 50
- 55
- 25
0
+ 25
+ 50
+ 75 + 100 + 125
S10X(C) / (D)
S10X(K)
Temperature (°C)
C Alloy
K Alloy
2 ppm/°C
1 ppm/°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
Document Number: 63001
Revision: 29-Jun-11
For any questions, contact: foil@vishaypg.com
www.vishayfoilresistors.com
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