SMN
Vishay Foil Resistors
FIGURE 2 - POWER DERATING CURVE
110
100
90
FIGURE 4 -TYPICAL TCR CURVE ?
(For more details, see table 2)
+ 150
+ 100
80
70
60
? R
R
+ 50
0
50
40
(ppm)
- 50
30
20
- 100
10
- 150
± 2 ppm/°C (+ 25 °C reference)
0
- 60 - 40
55
- 20
0
20
40
60
70
80
100
120
125
140
- 200
- 50
- 25
0
+ 20
+ 50
+ 75
+ 100
+ 125
Ambient Temperature (°C)
- 55
Ambient Temperature (°C)
FIGURE 3 - DIMENSIONS AND IMPRINTING ?
EXAMPLE in inches (millimeters)
0.008 ± 0.001
FIGURE 5 - TRIMMING TO VALUES ?
(Conceptual Illustration)
RATIO
(0.20 ± 0.025)
TOLERANCE CODE
0.050
(1.27)
0.0165 ± 0.0025
(0.42 ± 0.064)
VALUE R1
VALUE R2
SMN
10K Q 5K0 (1)
0.028 ± 0.001
(0.71 ± 0.025)
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
B0219
Current Path
DATE
CODE
0.0075 ± 0.0025
(0.191 ± 0.064)
0.197 ± 0.005
(5.00 ± 0.13)
2° - 6°
0.068 ± 0.005
(1.73 ± 0.13)
Mutual Inductance
Reduction due
to Change in
Current Direction
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Seating
Plane
If the resistance value of R1 and R2 contains more than 6 characters together, the VCODE
Note
(1)
will be printed instead (see Resistance Value Code List for Popular Ratios Table) followed by
the ratio tolerance code
FIGURE 6 - LAND PATTERN in inches (millimeters)
D
Note: Foil shown in black, etched spaces in white
Z
G
X
Y
C
D
E
C
G Z
MINIMUM
0.283
(7.19)
0.102
(2.59)
0.024
(0.61)
0.095
(2.41)
0.197
(5.00)
0.150
(3.81)
0.050
(1.27)
Y
E
X
MAXIMUM
0.291
(7.39)
0.110
(2.79)
0.032
(0.81)
REFERENCE
www.vishayfoilresistors.com
2
For any questions, contact: foil@vishaypg.com
Document Number: 63081
Revision: 31-Jan-13
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