S Series
FIGURE 3 - POWER DERATING CURVE
FIGURE 4 - TRIMMING TO VALUES
(conceptual illustration)
- 55 °C
+ 70 °C
200 %
175 %
150 %
125 %
100 %
75 %
Double Rated Power
Current Path
Interloop Capacitance
Reduction in Series
Before Trimming
Rated Power
Current Path
After Trimming
Trimming Process
Mutual Inductance
Reduction due
to Change in
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Current Direction
50 %
25 %
Resistance
0 %
- 75 - 50 - 25
0
25 50 75 100 125 150 175 200
Ambient Temperature (°C)
Note: Foil shown in black, etched spaces in white
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)
Short time overload, 6.25 x rated power
Test Group II
± 0.2 %
± 0.2 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.002 % (20 ppm)
± 0.003 % (30 ppm)
Resistance temperature characteristics(1)
Low temperature storage (24 h at - 65 °C)
± 25 ppm/°C
± 0.15 %
± 6.5 ppm/°C
± 2.0 ppm/°C
± 0.01 % (100 ppm)
± 0.002 % (20 ppm)
Low temperature operation
± 0.15 %
± 0.2 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.002 % (20 ppm)
± 0.002 % (20 ppm)
(45 min, rated power at - 65 °C)
Terminal strength
Test Group III
Dielectric Withstanding Voltage (DWV)
Resistance to solder heat
Moisture resistance
Test Group IV
± 0.15 %
± 0.1 %
± 0.4 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.05 % (500 ppm)
± 0.002 % (20 ppm)
± 0.005 % (50 ppm)
± 0.01 % (100 ppm)
Shock
± 0.2 %
± 0.2 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.002 % (20 ppm)
± 0.002 % (20 ppm)
Vibration
Test Group V
Life test at 0.3 W/+ 125 °C
2000 h
± 0.5 %
± 2.0 %
± 0.015 % (150 ppm)
± 0.05 % (500 ppm)
± 0.01 % (100 ppm)
± 0.03 % (300 ppm)
10 000 h
Test Group Va
Life test at 0.6 W (2 x rated power)/+ 70 °C, 2000 h
Test Group VI
± 0.5 %
± 2.0 %
5 ppm/V
± 0.015 % (150 ppm)
± 0.1 % (1000 ppm)
< 0.1 ppm/V
± 0.01 % (100 ppm)
± 0.05 % (500 ppm)
< 0.1 ppm/V
High temperature exposure (2000 h at + 175 °C)
Test Group VII
Voltage coefficient
See Table 1.
(1)
Document Number: 63001
Revision: 02-Mar-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
3