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Vishay |
Z201 (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Resistor with TCR of ± 0.05 ppm/°C,
PCR of 5 ppm at Rated Power, Tolerance of ± 0.005 %
and Load Life Stability of ± 0.005 %
INDUSTRY BREAKTHROUGH
Any value at any tolerance available within resistance rage
INTRODUCTION
The Z201 (0.150" lead spacing) and Z201L (0.200" lead
spacing) Bulk Metal® Z-Foil resistors represent an industry
breakthrough. This is the 3rd in a series of ultra-precision
resistors since the first Bulk Metal® Foil resistor was
introduced by Vishay in 1962. Each represents an
improvement on the earlier model. The TCR slope of the
Z201 is 0.2 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.) and is
an order of magnitude better than the original S102C. The
Bulk Metal® Z-Foil resistor is the ultimate choice in the most
demanding analog applications.
The Z-Foil technology provides a significant reduction of the
resistive component’s sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR).
Designers can now guarantee a high degree of stability and
accuracy in fixed-resistor applications using solutions based
on Vishay’s revolutionary Z-Foil technology.
Our Application Engineering Department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact us.
TABLE 1 - TOLERANCE AND TCR VERSUS
FEATURES
• Temperature Coefficient of Resistance (TCR):
± 0.05 ppm/°C typical (0 °C to + 60 °C)
Pb-free
± 0.2 ppm/°C typical (-55 °C to + 125 °C,
Available
+ 25 °C Ref.)
RoHS*
• Power Coefficient of Resistance “ΔR due to self COMPLIANT
heating”: ± 5 ppm at Rated Power
• Rated Power: 0.6 W at 70 °C
0.3 W at 125 °C
• Resistance Tolerance: to ± 0.005 %
• Load Life Stability: to ± 0.005 % at 70 °C, 2000 hours at
Rated Power
• Resistance Range: 10 Ω to 100 kΩ (higher or lower Values
of Resistance available)
• Electrostatic Discharge (ESD) above 25 000 Volts
• Non Inductive, Non Capacitive Design
• Rise Time: 1.0 ns without ringing
• Current Noise: 0.01: - 40 dB
• Thermal EMF: 0.1 µV/°C Max.
0.05 µV/°C typical
• Voltage Coefficient: < 0.1 ppm/V
• Non Inductive: 0.08 µH
• Terminal Finishes available: Lead (Pb)-free
Tin/Lead Alloy
• Maximum Working Voltage: 300 V
• Drop in Replacement for S102C/K
• Matched sets are available per request
• For better performances please contact us
APPLICATIONS
• Precision Amplifiers, High Precision Instrumentation,
Medical and Automatic Test Equipment
• Laboratory, Audio (High End Stereo Equipment)
• EB Applications, Military, Airborne and Space
• Down-hole (High Temperature)
FIGURE 1 - POWER DERATING CURVE
- 55 °C
200 %
175 %
+ 70 °C
Double Rated Power
VALUE
STANDARD
TOLERANCE
100 Ω to 100 kΩ
80 Ω to < 100 Ω
50 Ω to < 80 Ω
25 Ω to < 50 Ω
10 Ω to < 25 Ω
± 0.005 %
± 0.005 %
± 0.01 %
± 0.01 %
± 0.02 %
TYPICAL TCR AND
MAXIMUM SPREAD
- 55 °C TO + 125 °C
(+ 25 °C REF.)
± 0.2 ± 0.6 ppm/°C
± 0.2 ± 0.8 ppm/°C
± 0.2 ± 1.0 ppm/°C
± 0.2 ± 1.3 ppm/°C
± 0.2 ± 1.6 ppm/°C
150 %
125 %
100 %
75 %
50 %
Rated Power
Safe operation
for < 150 ppm
ΔR after
2000 hours
load life
25 %
0
- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
* Pb containing terminations are RoHS compliant, exemptions may apply
Document Number: 63113
Revision: 19-Apr-07
For any questions, contact: [email protected]
www.vishay.com
1
Z201 (Z-Foil)
Vishay Foil Resistors Ultra High Precision Z-Foil Resistor with TCR of
± 0.05 ppm/°C, PCR of 5 ppm at Rated Power, Tolerance
of ± 0.005 % and Load Life Stability of ± 0.005 %
FIGURE 2 - TRIMMING TO VALUES
(Conceptual Illustration)
Interloop Capacitance
Reduction in Series
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
Before Trimming
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Note: Foil shown in black, etched spaces in white
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
ΔR + 100
R0
(ppm)- 100
- 200
- 300
- 400
- 500
0.05 ppm/°C
- 0.1 ppm/°C
- 0.16 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
- 55 - 25
0 + 25 + 60 + 75 + 100 + 125
Ambient Temperature (°C)
FIGURE 4 - STANDARD IMPRINTING AND DIMENSIONS
Front View
Rear View
L
Optional Customer Part Number
W Print specification, etc. if required
Date Code
VISHAY 07 16
H XXXX Year Week
Z201
ST*
XXXXXX
100R01
0.01%
Resistance
Value Code
Tolerance
Model Name
LS
SW
Lead Material #22 AWG
Round Solder Coated Copper
LL
* 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.
Z 201
Z 201 L
Inches
mm
Inches
mm
LS
0.150 ± 0.005
3.81 ± 0.13
0.200 ± 0.005
5.08 ± 0.13
W
0.105 ± 0.010
2.67 ± 0.25
L
0.300 ± 0.010
7.62 ± 0.25
H
0.326 ± 0.010
8.28 ± 0.25
ST
0.010 min
0.254 min
SW LL
0.035 ± 0.01 1.000 ± 0.125
1.02 ± 0.13 25.4 ± 3.18
TABLE 2 - Z201 SPECIFICATIONS
Stability
Load Life at 2000 hours
Load Life at 10 000 hours
± 0.005 % Max ΔR at 0.1 W/+ 70 °C
± 0.015 % Max ΔR at 0.3 W/+ 125 °C
± 0.01 % Max ΔR at 0.05 W/+ 125 °C
± 0.05 % Max ΔR at 0.3 W/+ 125 °C
www.vishay.com
2
For any questions, contact: [email protected]
Document Number: 63113
Revision: 19-Apr-07
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