DSMZ (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Bulk Metal
®
Z-Foil Surface Mount
Voltage Divider, TCR Tracking of < 0.1 ppm/°C, PCR of
± 5 ppm at Rated Power and Stability of ± 0.005 % (50 ppm)
www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63121
2 Revision: 06-Aug-07
I
MPROVED PRODUC
T
FIGURE 3 - 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 4 - TYPICAL Z-FOIL TCR CURVE
(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 5 - DIMENSIONS AND IMPRINTING
DIMENSIONS L W H P TW TH S t
INCHES 0.160 ± 0.008 0.106 ± 0.008 0.063 ± 0.008 0.031 ± 0.005 0.031 ± 0.004 0.043 ± 0.008 0.100 ± 0.008 0.005 ± 0.002
MILLIMETERS 4.06 ± 0.20 2.69 ± 0.20 1.60 ± 0.20 0.79 ± 0.13 0.79 ± 0.10 1.09 ± 0.20 2.54 ± 0.20 0.13 ± 0.05
FIGURE 6 - RECOMMENDED LAND PATTERN
w
PP
t
H
TH
L
S
TW
TW
WEIV TNORFWEIV EDIS
STAND OFF
TW
BOTTOM VIEW
10K Q 10K
V B0219
VALUE R1
RATIO TOLERANCE CODE
VALUE R2
DATE CODE
TOP VIEW
1 2
3
Note:
R1 - between PIN1 and PIN3
R2 - between PIN2 and PIN3
0.063 ± 0.004
(1.6 ± 0.1)
0.100 ± 0.004
(2.54 ± 0.1)
0.040 ± 0.004
(1.02 ± 0.1)
0.071 ± 0.004
(1.8 ± 0.1)
0.100 ± 0.004
(2.54 ± 0.1)
0.035 ± 0.004
(0.89 ± 0.1)