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VPR221SZ Fiches technique(PDF) 2 Page - Vishay Siliconix

No de pièce VPR221SZ
Description  Ultra High Precision Z-Foil Surface Mount Power Resistor in TO-220 Configuration with TCR of ± 0.05 ppm/°C,
PDF  5 Pages
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Fabricant  VISHAY [Vishay Siliconix]
Site Internet  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

VPR221SZ Fiches technique(HTML) 2 Page - Vishay Siliconix

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Document Number: 63127
For any questions, contact: foil@vishay.com
www.vishay.com
Revision: 11-Jun-07
2
VPR221SZ (Z-Foil)
Ultra High Precision Z-Foil Surface Mount Power Resistor
in TO-220 Configuration with TCR of ± 0.05 ppm/°C, PCR
of 4 ppm/W and Load Life Stability of ± 0.005 % (50 ppm)
Vishay Foil Resistors
FIGURE 2 - 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
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
(for more details see table 1)
+ 500
+ 200
+ 100
0
- 100
- 200
- 300
- 500
- 55
- 25
+ 25
+ 60
+ 75
+ 100
+ 125
Ambient Temperature (°C)
ΔR
R
(ppm)
0
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
- 0.16 ppm/°C
- 400
+ 300
+ 400
FIGURE 4 - VPR221SZ FORMING
DIMENSIONS in inches (millimeters)
0.365 (9.27) Ref
0.050 ± 0.005
(1.27 ± 0.13)
0.150 ± 0.008
(3.81 ± 0.20)
0.015 ± 0.002
(0.38 ± 0.05)
0.078 ± 0.005
(1.98 ± 0.13)
Heat Sink
0.695 ± 0.010
(17.65 ± 0.25)
0.090 ± 0.010
(2.29 ± 0.25)
0.090 (2.286) Ref
0.110 (2.79) Ref
Flush with Heat Sink
Within ± 0.002 (± 0.05)
Before Forming
After Forming
FIGURE 5 - VPR221SZ DIMENSIONS in
inches (millimeters)
E
2
0.050 ± 0.005
(1.27 ± 0.13)
0.150 ± 0.008
(3.81 ± 0.20)
0.615 Max
(15.62)
0.078 ± 0.005
(1.98 ± 0.13)
0.015 ± 0.002
(0.38 ± 0.05)
0.030 ± 0.002
(0.76 ± 0.05)
0.100 ± 0.005
(2.54 ± 0.13)
0.400 ± 0.010
(10.16 ± 0.25)
VISHAY
1R0 1 %
0101
0.245 ± 0.010
(6.22 ± 0.25)
0.141 ± 0.005 Dia
(3.58 ± 0.13)
0.540 ± 0.040
(13.72 ± 1.02)
0.115 ± 0.005
(2.92 ± 0.13)
0.050 ± 0.005
(1.27 ± 0.13)
0.200 ± 0.030
(5.08 ± 0.76)
E
1
I
2
I
1
VPR221SZ
FIGURE 6 - LAND PATTERN DIMENSIONS in inches (millimeters)
0.050 ± 0.010
(1.27 ± 0.25)
0.120 ± 0.010
(3.05 ± 0.25)
0.10 ± 0.005
(2.54 ± 0.12)



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