303143, 303143L (Z-Foil)
Vishay Foil Resistors
FIGURE 2 - TRIMMING TO VALUES
FIGURE 3 - TYPICAL RESISTANCE/
TEMPERATURE CURVE
(conceptual illustration)
+ 500
+ 400
+ 300
+ 200
Interloop
Current Path
Before Trimming
Capacitance
Reduction
in Series
+ 100
ΔR
R
0
- 100
- 200
- 300
- 400
- 500
Current Path
After Trimming
Mutual
(ppm)
Inductance
Reduction due
to Opposing
Current in
0.05 ppm/°C
- 0.1 ppm/°C 0.1 ppm/°C
0.14 ppm/°C
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing Resistance
Adjacent Lines
- 0.16 ppm/°C
0.2 ppm/°C
- 55
- 25
0
+ 25
+ 60 + 75 + 100 + 125
Ambient Temperature (°C)
Note: Foil shown in black, etched spaces in white
FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS
Front View
Rear View
Optional Customer Part Number
Print Specification, etc. if required
L
W
Date Code
Resistance
Value Code
07
16
VISHAY
XXXX
303143
XXXXXX
100R01
0.005%
Year Week
H
Tolerance
*
ST
SW
LL
Model No.
LS
Lead Material #22 AWG
Round Solder Coated Copper
* The standoffs shall be so located as to give a lead clearance of 0.010" minimum between the resistor body and the printed circuit board
when the standoffs are seated on the printed circuit board. This is to allow for proper cleaning of flux and other contaminants from the unit
after all soldering processes.
LS
W
L
H
ST
SW
LL
Inches 0.150 0.005
303143
mm
Inches 0.200 0.005
mm 5.08 0.13
3.81 0.13
0.105 0.010 0.300 0.010 0.326 0.010
2.67 0.25 7.62 0.25 8.28 0.25
0.010 min
0.254 min
0.035 0.01
1.02 0.13
1.000 0.125
25.4 3.18
303143L
TABLE 2 - SPECIFICATIONS
Stability
0.005 % max. R at 0.1 W/+ 70 °C
Load Life at 2000 h
Load Life at 10 000 h
0.015 % max. R at 0.3 W/+ 125 °C
0.01 % max. R at 0.05 W/+ 125 °C
0.05 % max. R at 0.3 W/+ 125 °C
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For any questions, contact: foil@vishaypg.com
Document Number: 63174
Revision: 29-Mar-10