Ultra High Precision Z-Foil Miniature Resistor with
TCR of ± 0.05 ppm/°C, PCR of 5 ppm at Rated Power
and Tolerance to ± 0.01 %
Z202
Vishay Foil Resistors
Document Number: 63131 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 25-Mar-10 1
Any value at any tolerance available with resistance range
The Z202 is a miniaturized version of the now famous Z201. It is
made with a Bulk Metal
®
Z-Foil element so it retains all of the
inherent performance of Z-Foil resistors.
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.
FEATURES
Temperature coefficient of resistance (TCR):
± 0.05 ppm/°C typical (0 °C to + 60 °C);
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
Tolerance: to ± 0.01 %
Power coefficient of resistance (PCR) “R due
to self heating”: ± 5 ppm at rated rower
Electrostatic discharge (ESD) above 25 000 V
Resistance range: 5 to 30 k
(for higher or lower values, please contact us)
Power rating: 0.25 W at + 70 °C; 0.125 W at + 125 °C
Load life stability: ± 0.01 % maximum R at + 70 °C at
Rated power for 2000 h
Non inductive, non capacitive design
Current noise: - 40 dB
Thermal EMF: < 0.1 µV/°C
Voltage coefficient: < 0.1 ppm/V
Non inductive: < 0.08 µH
Non hot spot design
Maximum working voltage: 250 V
Terminal finishes available: lead (Pb)-free
tin/lead alloy
Any value available within resistance range (e.g. 1K234)
Prototype samples available from 48 h. For more
information, please contact foil@vishaypg.com
For better performances, please see Z201 datasheet
* Pb containing terminations are not RoHS compliant, exemptions may apply
FIGURE 1 - IMPRINTING AND DIMENSIONS
DIMENSIONS INCHES mm
L: 0.250 ± 0.010 6.35 ± 0.25
H: 0.250 ± 0.010 6.35 ± 0.25
W: 0.125 ± 0.010 3.18 ± 0.25
ST: 0.020 ± 0.010 0.51 ± 0.25
LL: 0.750 minimum 19.05 minimum
LS: 0.125 ± 0.005 3.18 ± 0.13
100R01
0.01 %
0745 -
Z202
V
ST
LS
0745 - H
LW
Front View Rear View
Lead Material
#22 AWG (0.025 Dia.)
Solder Coated Copper
Resistance
Value Code
Tolerance
LL
100R01
0.01 %
Z202
V
For Lead (Pb)-free Option
Date Code
45
Week
07
Year
FIGURE 2 - POWER DERATING CURVE
TABLE 1 - TOLERANCE AND TCR VERSUS
VALUE STANDARD
TOLERANCE
TYPICAL TCR AND
MAXIMUM SPREAD
- 55 °C to + 125 °C (+ 25 °C Ref.)
50
to 30 k
± 0.01 % ± 0.2 ± 1.8
20
to < 50
± 0.02 % ± 0.2 ± 2.8
10
to < 20
± 0.05 % ± 0.2 ± 4.8
5
to < 10
± 0.1 % ± 0.2 ± 6.8
200 %
175 %
150 %
125 %
100 %
75 %
50 %
25 %
0- 75 - 50 - 25 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
Percent of Rated Power at + 125 °C
- 55 °C + 70 °C
Double Rated Power
Rated Power
Z202
Vishay Foil Resistors
www.foilresistors.com For any questions, contact: foil@vishaypg.com Document Number: 63131
2Revision: 25-Mar-10
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
+ 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 4 - 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
TABLE 2 - ENVIRONMENTAL PERFORMANCE COMPARISON
MIL-PRF-55182
CHAR J
Z202
MAXIMUM R TYPICAL R
Test Group I
Thermal shock (5 x - 65 °C to + 150 °C) ± 0.2 % ± 0.01 % (100 ppm) ± 0.005 % (50 ppm)
Short time overload (6.25 x Pnom x 5 s) ± 0.2 % ± 0.01 % (100 ppm) ± 0.005 % (50 ppm)
Test Group II
Resistance temperature characteristic ± 25 ppm/°C See table 1 ± 0.05 ppm/°C
(0 °C to + 60 °C)
Low temperature storage ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Low temperature operation ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Terminal strength ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Test Group III
DWV ± 0.15 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Resistance to soldering heat ± 0.1 % ± 0.01 % (100 ppm) ± 0.005 % (50 ppm)
Moisture resistance ± 0.4 % ± 0.05 % (500 ppm) ± 0.01 % (100 ppm)
Test Group IV
Shock ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Vibration ± 0.2 % ± 0.01 % (100 ppm) ± 0.002 % (20 ppm)
Test Group V
Life test at 0.125 W, 125 °C for 2000 h ± 0.5 % ± 0.025 % (250 ppm) ± 0.01 % (100 ppm)
Test Group Va
Life test at 0.25 W (2 x rated power), 70 °C for 2000 h ± 0.5 % ± 0.02 % (200 ppm) ± 0.01 % (100 ppm)
Test Group VI
High temperature exposure ± 2.0 % ± 0.1 % (1000 ppm) ± 0.05 % (500 ppm)
Z202
Vishay Foil Resistors
Document Number: 63131 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 25-Mar-10 3
Note
* For non-standard requests, please contact Application Engineering.
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y107325K4540Q9L (preferred part number format)
DENOTES PRECISION VALUE AER*
YR =
K = k
0 = standard
9 = lead (Pb)-free
1 - 999 = custom
PRODUCT CODE RESISTANCE TOLERANCE PACKAGING
1073 = Z202 V= ± 0.005 %
T= ± 0.01 %
Q= ± 0.02 %
A= ± 0.05 %
B= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
L = bulk pack
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1073 25K4540 Q 9 L:
TYPE: Z202
VALUE: 25.454 k
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER EXAMPLE: Z202T 25K454 Q B (will continue to be used)
Z202 T 25K454 Q B
MODEL TERMINATION OHMIC VALUE RESISTANCE
TOLERANCE PA C K A G I N G
Z202 T = lead (Pb)-free
None = tin/lead alloy
25.454 kV= ± 0.005 %
T= ± 0.01 %
Q= ± 0.02 %
A= ± 0.05 %
B= ± 0.1 %
C= ± 0.25 %
D= ± 0.5 %
F= ± 1.0 %
B = bulk pack
073 2 K455Y1 0Q4 9 L
Vishay Precision Group
Document No.: 63999
Revision: 27-Apr-2011
www.vishaypg.com
1
Legal Disclaimer Notice
Disclaimer
Legal Disclaimer Notice
Disclaimer
Document No.: 63999
Revision: 27-Apr-2011
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.
Vishay Precision Group, Inc., its affiliates, agents, and employees, and all persons acting on its or their
behalf (collectively, “Vishay Precision Group”), disclaim any and all liability for any errors, inaccuracies or
incompleteness contained herein or in any other disclosure relating to any product.
The product specifications do not expand or otherwise modify Vishay Precision Group’s terms and
conditions of purchase, including but not limited to, the warranty expressed therein.
Vishay Precision Group makes no warranty, representation or guarantee other than as set forth in the terms
and conditions of purchase. To the maximum extent permitted by applicable law, Vishay Precision
Group disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and
all liability, including without limitation special, consequential or incidental damages, and (iii) any and
all implied warranties, including warranties of fitness for particular purpose, non-infringement and
merchantability.
Information provided in datasheets and/or specifications may vary from actual results in different
applications and performance may vary over time. Statements regarding the suitability of products for
certain types of applications are based on Vishay Precision Group’s knowledge of typical requirements that
are often placed on Vishay Precision Group products. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular
application.
No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or
by any conduct of Vishay Precision Group.
The products shown herein are not designed for use in life-saving or life-sustaining applications unless
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