Z202
Vishay Foil Resistors
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 %
FEATURES
100R01
0.01
%
0745 -
V
Z202
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.
FIGURE 1 - IMPRINTING AND DIMENSIONS
Front View
Date Code
45
07
Year Week
For Lead (Pb)-free Option
L
W
Resistance
Value Code
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
FIGURE 2 - POWER DERATING CURVE
Rear View
200
%
- 55 °C
+ 70 °C
Percent of Rated Power at + 125 °C
Double Rated Power
175
%
150
%
125
%
100
%
75
%
50
%
25
%
0
- 75 - 50 - 25
0745 -
H
V
Z202
100R01
0.01
%
Tolerance
Rated Power
ST
LL
LS
Lead Material
#22 AWG (0.025 Dia.)
Solder Coated Copper
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
DIMENSIONS
L:
H:
W:
ST:
LL:
LS:
INCHES
0.250 ± 0.010
0.250 ± 0.010
0.125 ± 0.010
0.020 ± 0.010
0.750 minimum
0.125 ± 0.005
mm
6.35 ± 0.25
6.35 ± 0.25
3.18 ± 0.25
0.51 ± 0.25
19.05 minimum
3.18 ± 0.13
50
to 30 k
20
to < 50
10
to < 20
5
to < 10
Ambient Temperature (°C)
TABLE 1 - TOLERANCE AND TCR VERSUS
VALUE
TYPICAL TCR AND
STANDARD
MAXIMUM SPREAD
TOLERANCE - 55 °C to + 125 °C (+ 25 °C Ref.)
± 0.01 %
± 0.02 %
± 0.05 %
± 0.1 %
± 0.2 ± 1.8
± 0.2 ± 2.8
± 0.2 ± 4.8
± 0.2 ± 6.8
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63131
Revision: 25-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
1
Z202
Vishay Foil Resistors
FIGURE 3 - TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
+ 100
ΔR
0
R
(ppm)
- 100
- 200
- 300
- 400
- 500
- 55
- 25
0
+ 25
+ 60 + 75
+ 100 + 125
- 0.16 ppm/°C
FIGURE 4 - TRIMMING TO VALUES
(Conceptual Illustration)
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
Current Path
After Trimming
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
Mutual Inductance
Reduction due
to Change in
Current Direction
Ambient Temperature (°C)
Note:
Foil shown in
black,
etched spaces in
white
TABLE 2 - ENVIRONMENTAL PERFORMANCE COMPARISON
MIL-PRF-55182
CHAR J
Test Group I
Thermal shock (5 x - 65 °C to + 150 °C)
Short time overload (6.25 x P
nom
x 5 s)
Test Group II
Resistance temperature characteristic
Low temperature storage
Low temperature operation
Terminal strength
Test Group III
DWV
Resistance to soldering heat
Moisture resistance
Test Group IV
Shock
Vibration
Test Group V
Life test at 0.125 W, 125 °C for 2000 h
Test Group Va
Life test at 0.25 W (2 x rated power), 70 °C for 2000 h
Test Group VI
High temperature exposure
± 2.0 %
± 0.1 % (1000 ppm)
± 0.05 % (500 ppm)
± 0.5 %
± 0.02 % (200 ppm)
± 0.01 % (100 ppm)
± 0.5 %
± 0.025 % (250 ppm)
± 0.01 % (100 ppm)
± 0.2 %
± 0.2 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.002 % (20 ppm)
± 0.002 % (20 ppm)
± 0.15 %
± 0.1 %
± 0.4 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.05 % (500 ppm)
± 0.002 % (20 ppm)
± 0.005 % (50 ppm)
± 0.01 % (100 ppm)
± 25 ppm/°C
± 0.15 %
± 0.15 %
± 0.2 %
See table 1
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.05 ppm/°C
(0 °C to + 60 °C)
± 0.002 % (20 ppm)
± 0.002 % (20 ppm)
± 0.002 % (20 ppm)
± 0.2 %
± 0.2 %
± 0.01 % (100 ppm)
± 0.01 % (100 ppm)
± 0.005 % (50 ppm)
± 0.005 % (50 ppm)
Z202
MAXIMUM
R
TYPICAL
R
www.foilresistors.com
2
For any questions, contact:
foil@vishaypg.com
Document Number: 63131
Revision: 25-Mar-10
Z202
Vishay Foil Resistors
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y107325K4540Q9L (preferred part number format)
DENOTES PRECISION
Y
VALUE
R
=
K
= k
AER*
0
= standard
9
= lead (Pb)-free
1 - 999
= custom
Y
1
0
7
3
2
5
K
4
5
4
0
Q
9
L
PRODUCT CODE
1073
= Z202
RESISTANCE TOLERANCE
V
= ± 0.005 %
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
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
MODEL
Z202
T
TERMINATION
T
= lead (Pb)-free
None = tin/lead alloy
25K454
OHMIC VALUE
25.454 k
Q
RESISTANCE
TOLERANCE
V
= ± 0.005 %
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
B
PACKAGING
B
= bulk pack
Note
* For non-standard requests, please contact Application Engineering.
Document Number: 63131
Revision: 25-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
3
Legal Disclaimer Notice
Vishay Precision Group, Inc.
Disclaimer
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, “VPG”), 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 VPG’s terms and conditions of purchase, including but
not limited to, the warranty expressed therein.
VPG 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, VPG 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 VPG’s knowledge of typical requirements that are often placed on VPG 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. You should ensure you have the current version of the relevant information by contacting
VPG prior to performing installation or use of the product, such as on our website at vpgsensors.com.
No license, express, implied, or otherwise, to any intellectual property rights is granted by this document, or by any
conduct of VPG.
The products shown herein are not designed for use in life-saving or life-sustaining applications unless otherwise
expressly indicated. Customers using or selling VPG products not expressly indicated for use in such applications do
so entirely at their own risk and agree to fully indemnify VPG for any damages arising or resulting from such use or sale.
Please contact authorized VPG personnel to obtain written terms and conditions regarding products designed for such
applications.
Product names and markings noted herein may be trademarks of their respective owners.
Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
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