DSMZ (Z-Foil)
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)
FEATURES
Temperature coefficient of resistance (TCR):
INTRODUCTION
Bulk Metal
®
Z-Foil technology out-performs all other resistor
technologies available today for applications that require
ultra-high precision and ultra-high stabilitly.
The Z-Foil technology provides a significant reduction of the
resistive element’s sensitivity to ambient temperature
variations (TCR) and to self heating when power is applied
(power coefficient).
The DSMZ offers low TCR (both absolute and tracking), low
PCR, excellent load life stability, tight tolerance match,
excellent ratio stability, low thermal EMF, and low current
noise - all in one package.
The
DSMZ
surface mount divider provides a matched pair of
Bulk Metal
®
Z-Foil resistors in a small epoxy molded
package. The electrical specification of this integrated
construction offers improved performance and better real
estate utilization over discrete resistors and matched pairs.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact us.
TABLE 1 - RESISTANCE VALUES AND
TOLERANCES
(1)
RESISTANCE VALUES
100
to 10 k per resistor
(2)
ABSOLUTE TOLERANCE
± 0.02 %, ± 0.05 %, ± 0.1 %
EACH RESISTOR
RESISTANCE
0.01 %, 0.02 %, 0.05 %
TOLERANCE MATCH
Absolute: (typical and maximum
TCR
spread): ± 0.2 ± 2.0 ppm/°C
Tracking: (maximum)
- 55 °C to + 125 °C
(+ 25 °C reference)
For R1/R2 = 1
0.5 ppm/°C
For 1 < R1/R2
10
1.0 ppm/°C
For 10 < R1/R2
100 2.0 ppm/°C
Notes
(1)
Tighter performances are available
(2)
100
to 12 k per resistor available in DSM
Absolute: ± 0.05 ppm/°C typ. (0 °C to + 60 °C)
± 0.2 ppm/°C typ. (- 55 °C to + 125 °C, + 25 °C Ref.)
Tracking: 0.1 ppm/°C typical
Power coefficient tracking
“R due to self heating”: ± 5 ppm at rated power
Power rating at 70 °C: entire package: 0.1 W,
each resistor: 0.05 W
Tolerance: absolute: ± 0.02 %; match: 0.01 %
Ratio stability: 0.005 % (0.05 W at 70 °C, 2000 h)
Resistance range: 100
to 10 k per resistor
Large variety of resistance ratios: 1:100
Foil resistors are not restricted to standard values/ ratios;
specific “as required” values/ratios can be supplied at no
extra cost or delivery (e.g. 1K234/2K345 vs. 1K/2K)
Electrostatic discharge (ESD) up to 25 000 V
Short time overload
0.005 %
Non-inductive, non-capacitive design
Rise time: 1 ns effectively no ringing
Current noise: < - 40 dB
Thermal EMF: 0.05 µV/°C typical
Voltage Coefficient: < 0.1 ppm/V
Non Inductive: < 0.08 µH
Non Hot Spot Design
Terminals: silver coated copper alloy
Compliant to RoHS directive 2002/95/EC
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vpgsensors.com
For better performances, please contact application
engineering
R
2
APPLICATIONS
Instrumentation amplifiers
Bridge networks
Differential amplifiers
Ratio arms in bridge circuits
Medical and test equipment
Military
Airborne etc.
R
1
Vin
-
Vout
+
DSMZ
FIGURE 2 - POWER DERATING CURVE
110
100
90
80
70
60
50
40
30
20
10
0
- 60 - 40
- 55
FIGURE 1 - SCHEMATIC
R
1
R
2
Percent of Rated Wattage
OPTION 1
SAME OHMIC VALUE,
SAME ABSOLUTE TOLERANCE
OPTION 2
RESISTOR PAIR
R
1
/R
2
- DIFFERENT VALUES
- 20
0
20
40
60
70
80
100
120 140
125
Ambient Temperature (°C)
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63121
Revision: 4-Mar-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
1
DSMZ (Z-Foil)
FIGURE 3 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 4 - TYPICAL RESISTANCE/
TEMPERATURE CURVE
(For more details, see table 1)
+ 500
+ 400
+ 300
+ 200
+ 100
ΔR
0
R
(ppm)
- 100
- 200
- 300
- 400
- 500
- 55
- 25
0
+ 25
+ 60 + 75 + 100 + 125
Ambient Temperature (°C) and TCR Chord Slopes for
Different Temperature Ranges
- 0.16 ppm/°C
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
Mutual Inductance
Reduction due
to Change in
Current Direction
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
Note:
Foil shown in black, etched spaces in white
FIGURE 5 - DIMENSIONS AND IMPRINTING
SIDE VIEW
H
w
FRONT VIEW
L
TH
t
P
P
TW
S
TW
BOTTOM VIEW
TOP VIEW
VALUE R1
RATIO TOLERANCE CODE
3
VALUE R2
STAND OFF
Notes
(1)
If the resistance value of R1 and R2
contains more than 6 characters
together, the VCODE will be printed
instead (see Resistance Value Code
List for Popular Ratios Table)
followed by the ratio tolerance code.
(2)
R1—between PIN1 and PIN3
R2—between PIN2 and PIN3.
H
1.60 ± 0.20
P
0.79 ± 0.13
TW
0.79 ± 0.10
TH
TW
10K Q 10K
(1) (2)
B0219
1
DATE CODE
2
DIMENSIONS
INCHES
MILLIMETERS
L
4.06 ± 0.20
W
2.69 ± 0.20
S
2.54 ± 0.20
t
0.13 ± 0.05
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
1.09 ± 0.20
FIGURE 6 - RECOMMENDED LAND PATTERN
0.063 ± 0.004
(1.6 ± 0.1)
0.040 ± 0.004
(1.02 ± 0.1)
0.035 ± 0.004
(0.89 ± 0.1)
0.100 ± 0.004
(2.54 ± 0.1)
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For any questions, contact
foil@vpgsensors.com
0.071 ± 0.004
(1.8 ± 0.1)
0.100 ± 0.004
(2.54 ± 0.1)
Document Number: 63121
Revision: 4-Mar-15
DSMZ (Z-Foil)
TABLE 2 - PERFORMANCE SPECIFICATIONS
(Test Method Per MIL-PRF-914)
SPECIFICATIONS
Power rating
at 70 °C
Entire package: 0.1 W
Each resistor: 0.05 W
Maximum Working Voltage
(each resistor)
Working Temperature Range
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 hours
DWV
atmospheric pressure, 200 V (A.C.), 1 minute
Insulation Resistance
100 V (D.C.), 1 minute
Resistance to Soldering Heat
Successfully passed
> 10
4
M
R
= 0.01 % (100 ppm)
Ratio
= 0.005 % (50 ppm)
Moisture Resistance
+ 65 °C to - 10 °C; 90 % to 98 % RH; 0.1 x rated power, 240 hours
Shock (Specified Pulse)
100 G
Vibration, High Frequency
(10 Hz - 2000 Hz), 20 G
High Temperature Exposure
100 hours at 125 °C
Low Temperature Storage
24 hours at - 65 °C
Load Life Stability
2000 hours at + 70 °C; rated power
Short Time Overload
6.25 x Rated Power; 5 seconds
Low Temperature Operation
R
= 0.02 % (200 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.005 % (50 ppm)
Ratio
= 0.0025 % (25 ppm)
R
= 0.01 % (100 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)
R
= 0.005 % (50 ppm)
Ratio
= 0.0025 % (25 ppm)
Weight
0.04 g
R
= 0.015 % (150 ppm)
Ratio
= 0.01 % (100 ppm)
25 V
- 65 °C to + 125 °C
R
= 0.01 % (100 ppm)
Ratio
= 0.005 % (50 ppm)
TYPICAL LIMITS
Document Number: 63121
Revision: 4-Mar-15
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
3
DSMZ (Z-Foil)
TABLE 3 - GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PART NUMBER: Y4485V0067QT9W (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
L
= bulk pack
Y
4
4
8
5
V
0
0
6
7
Q
T
9
W
PRODUCT CODE
4485
= DSMZ
RESISTANCE TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
CHARACTERISTICS
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
FOR EXAMPLE: ABOVE GLOBAL ORDER Y4485 V0067 Q T 9 W:
TYPE: DSMZ
VALUES: 10K/400R
ABSOLUTE TOLERANCE: ± 0.02 %
TOLERANCE MATCH: 0.01 %
TERMINATION: lead (Pb)-free
PACKAGING: waffle pack
HISTORICAL PART NUMBER: DSMZ 10K 400R TCR0.2 Q T S W (will continue to be used)
DSMZ
MODEL
10K 400R
OHMIC VALUE
R
1
= 10 k
R
2
= 400
TCR0.2
TCR
CHARACTERISTIC
Q
ABSOLUTE
TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
T
TOLERANCE
MATCH
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
S
TERMINATION
S
= lead (Pb)-free
B
= tin/lead
W
PACKAGING
T
= tape and reel
W
= waffle pack
B
= bulk pack
Note
(1)
For non-standard requests or additional values, please contact application engineering.
TABLE 4 - RESISTANCE VALUE CODE LIST FOR POPULAR RATIOS
(1)
VCODES
V0052
V0065
V0066
V0067
V0068
V0069
V0070
V0071
V0072
V0073
V0074
V0075
V0076
V0077
V0246
V0078
V0079
(1)
R1/R2
RATIO
100
50
R1
10K
10K
5K
10K
5K
10K
2K
10K
2K
1K
5K
2K
1K
500R
10K
R2
100R
200R
100R
400R
200R
500R
100R
1K
200R
100R
1K
400R
200R
100R
2K5
500R
100R
VCODES
V0080
V0081
V0082
V0083
V0084
V0085
V0086
V0087
V0001
V0002
V0059
V0004
V0091
V0090
V0089
V0088
R1/R2
RATIO
2.5
R1
1K
500R
10K
2K
R2
400R
200R
5K
1K
500R
200R
100R
400R
10K
5K
2K
1K
500R
400R
200R
100R
25
2
1K
400R
200R
20
1.25
500R
10K
5K
2K
1K
500R
400R
200R
100R
10
5
1
4
2K
400R
Note
Other values available upon request.
For any questions, contact
foil@vpgsensors.com
Document Number: 63121
Revision: 4-Mar-15
www.vishayfoilresistors.com
4
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
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Please contact authorized VPG personnel to obtain written terms and conditions regarding products designed for such
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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
www.vpgsensors.com
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