VSMP0603 (Z-Foil)
Vishay Foil Resistors
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 3 -TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
Interloop Capacitance
Red u ction in Series
C u rrent Path
Before Trimming
Δ R
R
+ 100
0
- 100
(ppm)
0.05 ppm/°C
M u t u al Ind u ctance
Red u ction d u e
to Opposing
C u rrent in
Adjacent Lines
C u rrent Path
After Trimming
Trimming Process
Remo v es this Material
from Shorting Strip Area
Changing C u rrent Path
and Increasing
Resistance
- 200
- 300
- 400
- 500
- 55
- 0.1 ppm/°C 0.1 ppm/°C
0.14 ppm/°C
- 0.16 ppm/°C 0.2 ppm/°C
- 25 0 + 25 + 60 + 75 + 100 + 125
Ambient Temperature (°C)
Note: Foil sho w n in b lack, etched spaces in w hite
Note
? The TCR values for < 100 ? are influenced by the termination
composition and result in deviation from this curve.
TABLE 2 - DIMENSIONS AND LAND PATTERN in Inches (Millimeters)
Bottom View for Mountin g
Uncoated
Ceramic
L
W
T
D
CHIP SIZE
0603
L
± 0.005 (0.13)
0.063 (1.60)
W
± 0.005 (0.13)
0.032 (0.81)
THICKNESS MAXIMUM
0.025 (0.64)
D
± 0.005 (0.13)
0.011 (0.28)
Note
? Land pattern dimensions are per IPC-782.
TABLE 3 - PERFORMANCES
TEST OR CONDITIONS
PER MIL-PRF-55342
Thermal shock:
100 x (- 65 °C to + 150 °C)
Low temperature operation:
- 65 °C, 45 min, rated power
Short time overload:
6.25 x rated power, 5 s
High temperature exposure: 100 h, 150 °C
Resistance to soldering heat
Moisture resistance
Load life stability + 70 °C for 2000 h
at rated power
MIL-PRF-55342
CHARACTERISTIC E ? R LIMITS
± 0.2 %
± 0.1 %
± 0.1 %
± 0.1 %
± 0.2 %
± 0.2 %
± 0.5 %
TYPICAL ? R LIMITS
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
± 0.01 % (100 ppm)
± 0.005 % (50 ppm)
± 0.03 % (300 ppm)
± 0.005 % (50 ppm)
MAXIMUM ? R LIMITS
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.03 % (300 ppm)
± 0.02 % (200 ppm)
± 0.1 % (1000 ppm)
± 0.01 % (100 ppm)
Note
? As shown + 0.01 ? to allow for measurement errors at low values.
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For any questions, contact: foil@vishaypg.com
Document Number: 63141
Revision: 26-Mar-10
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