SMNZ (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Surface Mount 4 Resistor Network
Dual-In-Line Package with TCR Tracking of 0.1 ppm/°C, PCR
Tracking of 5 ppm at Rated Power, and Tolerance Match of 0.01 %
FEATURES
Temperature coefficient of resistance (TCR):
absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)
± 0.2 ppm/°C typical (-55 °C to + 125 °C,
+ 25 °C Ref.) (see table 1)
Tracking: 0.1 ppm/°C typical (see table 1)
Tolerance match: 0.01 %
Power coefficient tracking - “R2 -R1 due to self heating”:
5 ppm at rated power
Power rating: at 70 °C
Entire package: 0.4 W
Each resistor: 0.1 W
Ratio stability: 0.005 % (0.1 W at 70 °C, 2000 h)
Large variety of resistance ratios
Electrostatic discharge (ESD) above 25 000 V
Short time overload
0.0025 %
Non-inductive, non-capacitive design
Rise time: 1 ns without ringing
Current noise: <- 40 dB
Voltage coefficient < 0.1 ppm/V
Non-inductive: < 0.08 µH
Non hot spot design
Terminal Finishes available: lead (Pb)-free
tin/lead alloy
For better performances please contact us
Any value available within resistance range (e.g. 1K2345)
Prototype samples available from 48 h. For more
information, please contact
foil@vishaypg.com
Any value and any ratio available within resistance range
INTRODUCTION
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APPLICATIONS
Instrumentation amplifiers
Bridge networks
Differential amplifiers
Ratio arms in bridge circuits
Medical and test equipment
Military
Airborne etc
R
2
V
1
R
1
The Z-Foil Technology provides a significant reduction of the
resistive components’ sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR).
0.05 ppm/°C Absolute TCR removes errors due to
temperature gradients.
Model SMNZ offers extremely low TCR (absolute and
tracking), excellent load life stability, tight tolerance (absolute
and matching), excellent ratio stability, low current noise, low
voltage coefficient and non sensitivity to ESD -
all in the
same resistor.
The SMNZ Surface Mount Network is made up of 4
independent Bulk Metal
®
Z-Foil resistors in a small standard
molded epoxy package with 50 MIL lead pitch (JEDEC
MS-012 package).
The electrical specification of this integrated construction
offers improved performance and better real estate utilization
over discrete resistors and matched sets. The resistor may
be used independently or as divider pairs.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
-
V
out
V
2
R
1
+
R
2
SMNZ
TABLE 1 - MODEL SMNZ SPECIFICATIONS
MODEL
ABSOLUTE TCR
RESISTANCE
(- 55 °C TO + 125 °C, + 25 °C REF.)
1)
VALUES
(TYPICAL + MAX. SPREAD)
100
- 1 k
1 k - 10 k
± 0.2 ± 2.8
± 0.2 ± 1.8
SMNZ
Note
1. SMN (Classic Foil) available with values up to 20 k
* Pb containing terminations are not RoHS compliant, exemptions may apply
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For any questions, contact:
foil@vishaypg.com
Document Number: 63117
Revision: 25-Mar-10
PR
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FIGURE 1 - SCHEMATICS
R1
R1
R1
R1
OPTION 1
FOUR RESISTORS, SAME OHMIC VALUE
SAME ABSOLUTE TOLERANCE
R1
R2
R2
R1
Note
1. Different schematics are available (R1, R2, R3, R4)
OPTION 2
TWO RESISTOR PAIRS
R1/R2; R2/R1
RESISTANCE
RATIO
TCR TRACKING
MAX.
0.5 ppm/°C
1.0 ppm/°C
2.0 ppm/°C
TOLERANCE
ABSOLUTE
± 0.02 %
± 0.05 %
± 0.1 %
MATCH
0.01 %
0.02 %
0.05 %
R1/R2 = 1
1 < R1/R2
10
10 < R1/R2
100
SMNZ (Z-Foil)
Vishay Foil Resistors
FIGURE 2 - POWER DERATING CURVE
110
FIGURE 4 - TYPICAL TCR CURVE Z-FOIL
+ 500
+ 400
+ 300
+ 200
Percent of Rated Wattage
70
60
50
40
30
20
10
0
- 60 - 40 - 20
- 55
0
20
40
60
70
80
100 120 140 160
125
Ambient Temperature (°C)
FIGURE 3 - DIMENSIONS AND IMPRINTING
EXAMPLE
in inches (millimeters)
0.008 ± 0.001
(0.20 ± 0.025)
TOLERANCE MATCH
VALUE
R1
VALUE
R2
0.028 ± 0.001
(0.71 ± 0.025)
0.050
(1.27)
0.0165 ± 0.0025
(0.42 ± 0.064)
SMNZ
0.157
(3.99)
10K Q 5K0
V
B0219
0.239 ± 0.005
(6.07 ± 0.13)
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DATE
CODE
0.197 ± 0.005
(5.00 ± 0.13)
2° - 6°
0.0075
±
0.0025
(0.191
±
0.064)
0.068 ± 0.005
(1.73 ± 0.13)
Seating
Plane
FIGURE 6 - LAND PATTERN
in inches (millimeters)
D
C
G Z
Y
MINIMUM
MAXIMUM
E
X
Document Number: 63117
Revision: 25-Mar-10
For any questions, contact:
foil@vishaypg.com
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+ 100
ΔR
0
R
(ppm)
- 100
- 200
- 300
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
- 400
- 0.16 ppm/°C
- 25
0
0.2 ppm/°C
- 500
- 55
+ 25
+ 60 + 75
+ 100 + 125
100
90
80
C
Ambient Temperature (°C)
FIGURE 5 - TRIMMING TO VALUES
(conceptual illustration)
Interloop Capacitance
Reduction in Series
Current Path
Before Trimming
Mutual Inductance
Reduction due
to Change in
Current Direction
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
Z
G
X
Y
C
D
E
0.283
(7.19)
0.291
(7.39)
0.102
(2.59)
0.110
(2.79)
0.024
(0.61)
0.032
(0.81)
0.095
(2.41)
0.197
(5.00)
0.150
(3.81)
0.050
(1.27)
REFERENCE
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SMNZ (Z-Foil)
Vishay Foil Resistors
TABLE 2 - PERFORMANCE SPECIFICATIONS
(per MIL-PRF 914 test methods)
SPECIFICATIONS
Power Rating
at + 70 °C
TYPICAL LIMITS
Each resistor: 0.1 W
Entire package: 0.4 W
Maximum Working Voltage
(each resistor)
Thermal Shock
25 x (- 65 °C to + 125 °C)
Thermal Shock
5 x (- 65 °C to + 125 °C) and
Power Conditioning
1.5 rated power at 25 °C, 100 h
DWV Atm. Pressure
200 V (A.C), 1 min
Insulation Resistance
100 V (D.C), 1 min
Resistance to Soldering Heat
Moisture Resistance
+ 65 °C to - 10 °C; 90 % to 98 % RH; 0.1 x rated power; 240 h
Shock (Specified Pulse)
100G
Vibration, High Frequency
(10 Hzto 2000 Hz), 20G
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High Temperature Exposure
100 h at 125 °C
Low Temperature Storage
24 h at - 65 °C
Load Life Stability
at 70 °C; 0.1 W per resistor, 2000 h
Short Time Overload
6.25 x rated power; 5 s
Weight
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(P x R)
½
R
= 0.01 % (100 ppm)
Ratio
= 0.01 % (100 ppm)
R
= 0.02 % (200 ppm)
Ratio
= 0.015 % (150 ppm)
Successfully passed
> 10
4
M
R
= 0.01 % (100 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.02 % (200 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.01 % (100 ppm)
Ratio
= 0.01 % (100 ppm)
R
= 0.005 % (50 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.01 % (100 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.005 % (50 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.005 % (50 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.005 % (50 ppm)
Ratio
= 0.0025 % (25 ppm)
0.08 g
Document Number: 63117
Revision: 25-Mar-10
SMNZ (Z-Foil)
Vishay Foil Resistors
TABLE 3 - GLOBAL PART NUMBER INFORMATION
NEW GLOBAL PART NUMBER: Y1747V0204BA9W (preferred part number format)
DENOTES PRECISION
Y
VCODE
RESISTANCE
VALUE CODE
TOLERANCE MATCH
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
PACKAGING
R
= tape and reel
W
= waffle pack
U
= ESD tubes
Y
1
7
4
7
V
0
PRODUCT CODE
SMNZ
= 1747
ABSOLUTE TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1747 V0204 B A 9 W:
TYPE: SMNZ
VALUES: 10K/500R
ABSOLUTE TOLERANCE: ± 0.1 %
TOLERANCE MATCH: 0.05 %
TERMINATION: Lead (Pb)-free
PACKAGING: Waffle Pack
HISTORICAL PART NUMBER: SMNZ 10K/500R TCR0.2 B A S W (will continue to be used)
SMNZ
MODEL
SMNZ
10K/500R
RESISTANCE
VALUE
R
1
= 10 k
R
2
= 500
TCR0.2
ABSOLUTE TCR
TCR0.2
B
A
ABSOLUTE
TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
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Note
* For non-standard requests, please contact Application Engineering.
TABLE 4 - RESISTANCE VALUE CODE LIST FOR POPULAR RATIOS
(other values available upon request)
VCODES
V0201
V0202
V0197
V0203
V0198
V0204
V0193
V0205
V0194
V0187
V0200
V0195
V0188
V0184
V0196
V0181
R1/R2
RATIO
100
50
R1
R2
VCODES
V0189
V0185
V0207
V0175
V0190
V0182
V0179
V0186
V0178
V0180
V0183
V0023
V0191
V0176
V0019
V0008
R1/R2
RATIO
2.5
R1
1K
500R
10K
2K
1K
400R
200R
500R
100R
200R
400R
500R
1K
2K
5K
10K
R2
400R
200R
5K
1K
500R
200R
100R
400R
100R
200R
400R
500R
1K
2K
5K
10K
25
20
10
5
4
10K
10K
5K
10K
5K
10K
2K
10K
2K
1K
5K
2K
1K
500R
2K
400R
100R
200R
100R
400R
200R
500R
100R
1K
200R
100R
1K
400R
200R
100R
500R
100R
Document Number: 63117
Revision: 25-Mar-10
For any questions, contact:
foil@vishaypg.com
PR
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2
0
4
B
A
9
W
AER*
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
S
W
TOLERANCE
MATCH
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
TERMINATION
PACKAGING
S
= lead (Pb)-free
B
= tin/lead
T
= tape and reel
W
= waffle pack
U
= ESD tubes
2
1.25
1
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Legal Disclaimer Notice
Vishay Precision Group
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, “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 otherwise
expressly indicated. Customers using or selling Vishay Precision Group products not expressly indicated for use
in such applications do so entirely at their own risk and agree to fully indemnify Vishay Precision Group for any
damages arising or resulting from such use or sale. Please contact authorized Vishay Precision Group 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.
Document No.: 63999
Revision: 27-Apr-11
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