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300145TR1TCR2DDB データシート(PDF) 2 Page - Vishay Siliconix

部品番号 300145TR1TCR2DDB
部品情報  High Precision Voltage Divider Resistors with TCR Tracking to 0.5 ppm/°C and Tolerance Match to 0.005 % (50 ppm)
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メーカー  VISHAY [Vishay Siliconix]
ホームページ  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

300145TR1TCR2DDB データシート(HTML) 2 Page - Vishay Siliconix

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300144, 300145
Vishay Foil Resistors
High Precision Voltage Divider Resistors
with TCR Tracking to 0.5 ppm/°C and
Tolerance Match to 0.005 % (50 ppm)
www.vishay.com
For any questions, contact: foil@vishay.com
Document Number: 63045
2
Revision: 21-Nov-07
Note: Power is proportional to the divider ratio
Example: In a 300144 (1K/10K dual), the power rating would be
18 mW on the 1K and 182 mW on the 10K, for a total of 200 mW on
R1 + R2.
FIGURE 1 - 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 2 - STANDARD PRINTING AND DIMENSIONS in inches (millimeters)
Tolerance: ± 0.010" (0.25)
1. Lead wires: #22 AWG solder coated copper,
0.75" minimum length
2. Each resistor contains 1 chip of two resistive
elements
Model 300144 and Schematic2)
Model 300145 and Schematic2)
23
R2
1
R1
123
VISHAY
9825
0.295
(7.49)
0.320
(8.13)
Date Code
Model No.
0.75
1)
(19.05)
0.1 (2.54)
300144
0.015 ± 0.005
(0.38 ± 0.13)
0.025 ± 0.005
(0.64 ± 0.13)
1
R1 Indicator
(High or
Low Value)
0.1
(2.54)
Match
Tolerance
123
0.75
1)
(19.05)
0.1 (2.54)
0.015 ± 0.005
(0.38 ± 0.13)
0.025 ± 0.005
(0.64 ± 0.13)
23
R2
1
R1
54
R1
6
R2
0.375
(9.53)
0.375
(9.53)
0.2
(5.08)
654
Match
Tolerance
Date Code
Model No.
VISHAY
0730
300145
FIGURE 3 - POWER DERATING CURVE
300144, 300145
200 %
175 %
150 %
125 %
100 %
75 %
50 %
25 %
0
- 75
- 50
- 25
0
+ 25
+ 50
+ 75
+ 100 + 125 + 150 + 175 + 200
Ambient Temperature (
°C)
- 55 °C
+ 70 °C
Double Rated Power
Rated Power
Safe operation
for < 150 ppm
R after 2000
hours load-life.
(
)
(
)
R1
R2
P1 =
P
P2 =
P
R1 + R2
R1 + R2
FIGURE 4 - FOIL RESISTOR TCR COMPARISON
OF FOIL ALLOYS IN MILITARY RANGE
- 50
- 25
0
+ 25
+ 50
+ 75
+ 100
+ 125
- 55
2 ppm/
°C
+ 150
+ 100
+ 50
0
- 50
- 100
- 150
- 200
R
R
(ppm)
Temperature (°C)


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