VPR221SZ Vishay, VPR221SZ Datasheet - Page 2

• Manufacturer Part Number: VPR221SZ
• Description: 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
• Manufacturer: Vishay

Document Number: 63127
Revision: 11-Jun-07
0.050 ± 0.005
Interloop Capacitance
Reduction in Series
(1.27 ± 0.13)
FIGURE 2 - TRIMMING TO VALUES
FIGURE 4 - VPR221SZ FORMING
FIGURE 6 - LAND PATTERN DIMENSIONS in inches (millimeters)
Mutual Inductance
Reduction due
to Change in
Current Direction
Heat Sink
0.150 ± 0.008
(3.81 ± 0.20)
(Conceptual Illustration)
DIMENSIONS in inches (millimeters)
Note: Foil shown in black, etched spaces in white
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)
0.365 (9.27) Ref
Before Forming
After Forming
(17.65 ± 0.25)
0.695 ± 0.010
0.090 (2.286) Ref
0.015 ± 0.002
(0.38 ± 0.05)
0.120 ± 0.010
(3.05 ± 0.25)
After Trimming
Current Path
from Shorting Strip Area
Changing Current Path
Removes this Material
0.110 (2.79) Ref
Trimming Process
Flush with Heat Sink
Within ± 0.002 (± 0.05)
and Increasing
0.090 ± 0.010
(2.29 ± 0.25)
Resistance
Before Trimming
For any questions, contact: [e-mail]
Current Path
0.078 ± 0.005
(1.98 ± 0.13)
0.050 ± 0.010
(1.27 ± 0.25)
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
FIGURE 5 - VPR221SZ DIMENSIONS in
0.200 ± 0.030
(5.08 ± 0.76)
(ppm)
ΔR
R
0.245 ± 0.010
(6.22 ± 0.25)
(13.72 ± 1.02)
0.540 ± 0.040
+ 500
+ 400
+ 300
+ 200
+ 100
- 100
- 200
- 300
- 400
- 500
0
0.10 ± 0.005
(2.54 ± 0.12)
- 55
(10.16 ± 0.25)
0.400 ± 0.010
0.100 ± 0.005
(2.54 ± 0.13)
VPR221SZ
1R0 1 %
I
1
(for more details see table 1)
VISHAY
inches (millimeters)
0101
E
1
- 0.16 ppm/°C
E
- 25
2
I
2
- 0.1 ppm/°C
0.141 ± 0.005 Dia
0.030 ± 0.002
(0.76 ± 0.05)
VPR221SZ (Z-Foil)
0.115 ± 0.005
(3.58 ± 0.13)
(2.92 ± 0.13)
Ambient Temperature (°C)
0
0.050 ± 0.005
(1.27 ± 0.13)
Vishay Foil Resistors
0.05 ppm/°C
+ 25
0.150 ± 0.008
(3.81 ± 0.20)
0.1 ppm/°C
0.14 ppm/°C
+ 60 + 75
0.2 ppm/°C
www.vishay.com
0.615 Max
0.015 ± 0.002
(0.38 ± 0.05)
+ 100 + 125
(15.62)
0.078 ± 0.005
(1.98 ± 0.13)
0.050 ± 0.005
(1.27 ± 0.13)
2