DSM
Vishay Foil Resistors
High Precision Bulk Metal
®
Foil Surface Mount Voltage Divider,
TCR Tracking of < 0.5 ppm/°C, Tolerance Match of 0.01 %
and Stability of ± 0.005 % (50 ppm)
FEATURES
Temperature coefficient of resistance (TCR):
Absolute: 2 ppm/°C typical
(- 55 °C to + 125 °C, + 25 °C ref.)
Tracking: 0.5 ppm/°C typical
Tolerance: absolute: ± 0.02 %; match: 0.01 %
Power rating: to 70 °C: entire package: 0.1 W
each resistor: 0.05 W
Ratio stability: 0.005 % (0.05 W at 70 °C, 2000 h)
Resistance range: 100
to 12 k per resistor
Large variety of resistance ratios: 1:120
Vishay 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)
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Electrostatic discharge (ESD) at least to 25kV
Short time overload: 0.005 %
Non inductive, non capacitive design
Rise time: 1 ns effectively no ringing
Current noise: < 0.010 µV
RMS
/V of applied voltage
( - 40 dB)
Voltage coefficient: 0.1 ppm/V
Non inductive: 0.08 µH
Non hot spot design
Terminals: silver coated copper alloy (see Table 5)
Compliant to RoHS directive 2002/95/EC
Prototype quantities available in just 5 working days
or sooner. For more information, please contact
foil@vishaypg.com
For better performances, please see DSMZ datasheet
(Z-Foil)
INTRODUCTION
Bulk Metal
®
Foil (BMF) technology out-performs all other
resistor technologies available today for applications that
require high precision and high stability.
This technology has been invented, patented and pioneered
by Vishay Foil Resistors (VFR). Products based on this
technology are the most suitable for a wide range of
appilcations.
BMF technology allows the production of customer oriented
products designed to satisfy challenging and specific
technical requirements. Model DSM offers low TCR (both
absolute and tracking), excellent load life stability, tight
tolerance, excellent ratio stability, and low current noise, all in
one package.
The DSM surface mount divider provides a matched pair of
Bulk Metal
®
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.
VFR’s application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications, please
contact
foil@vishaypg.com.
FIGURE 1 - SCHEMATIC
R
1
R
2
OPTION 1
SAME OHMIC VALUE,
SAME ABSOLUTE TOLERANCE
OPTION 2
RESISTOR PAIR
R
1
/R
2
- DIFFERENT VALUES
TABLE 1 - MODEL DSM SPECIFICATIONS
MODEL
ABSOLUTE TCR
(- 55 °C TO + 125 °C, + 25 °C REF.)
TYPICAL + MAX. SPREAD
± 2 ppm/°C ± 3 ppm/°C
RESISTANCE
RATIO
R1/R2 = 1
DSM
1 < R1/R2
10
10 < R1/R2
120
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63088
Revision: 22-Apr-2013
For any questions, contact:
foil@vishaypg.com
www.vishayfoilresistors.com
1
TCR TRACKING
1.0 ppm/°C
2.0 ppm/°C
3.0 ppm/°C
TOLERANCE
ABSOLUTE
± 0.02 %
± 0.05 %
± 0.1 %
MATCH
0.01 %
0.02 %
0.05 %
DSM
Vishay Foil Resistors
FIGURE 2 - POWER DERATING CURVE
110
100
90
80
70
60
50
40
30
20
10
0
- 60 - 40
- 55
FIGURE 3 - RECOMMENDED LAND
0.063 ± 0.004
(1.6 ± 0.1)
0.040 ± 0.004
(1.02 ± 0.1)
Percent of Rated Wattage
0.035 ± 0.004
(0.89 ± 0.1)
0.100 ± 0.004
(2.54 ± 0.1)
- 20
0
20
40
60
70
80
100
120 140
125
Ambient Temperature (°C)
FIGURE 4 - TRIMMING TO VALUES
(Conceptual Illustration)
FIGURE 5 - TYPICAL RESISTANCE/
TEMPERATURE CURVE
(For more details, see table 1)
+ 150
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
+ 100
Δ
R
+ 50
± 2 ppm/°C
(+ 25 °C reference)
Mutual Inductance
Reduction due
to Opposing
Current in
Adjacent Lines
0
R
(ppm)
- 50
- 100
- 150
- 200
- 50
- 55
- 25
0
+ 25
+ 50
+ 75
+ 100
+ 125
Note:
Foil shown in black, etched spaces in white
Ambient Temperature (°C)
FIGURE 6 - DIMENSIONS AND IMPRINTING
SIDE VIEW
H
w
FRONT VIEW
L
TH
t
P
P
TW
S
TW
BOTTOM VIEW
1
TOP VIEW
VALUE R1
RATIO TOLERANCE CODE
3
VALUE R2
3
2
STAND OFF
Notes
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.
(1)
TW
10K Q 10K
(1) (2)
B0219
1
DATE CODE
2
DIMENSIONS
INCHES
MILLIMETERS
L
4.06 ± 0.20
W
2.69 ± 0.20
H
1.60 ± 0.20
P
0.79 ± 0.13
TW
0.79 ± 0.10
TH
1.09 ± 0.20
S
2.54 ± 0.20
0.071 ± 0.004
(1.8 ± 0.1)
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
0.13 ± 0.05
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For any questions, contact:
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Document Number: 63088
Revision: 22-Apr-2013
0.100 ± 0.004
(2.54 ± 0.1)
t
DSM
Vishay Foil Resistors
TABLE 3 - PERFORMANCE SPECIFICATIONS
(Test Method Per MIL-PRF-914)
SPECIFICATIONS
Power Rating
at 70 °C
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 h
DWV
atmospheric 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)
100 G
Vibration, High Frequency
(10 Hz to 2000 Hz), 20 G
High Temperature Exposure
100 h at 125 °C
Low Temperature Storage
24 h at - 65 °C
Load Life Stability
2000 h at + 70 °C; rated power
Short Time Overload
6.25 x rated power; 5 s
Low Temperature Operation
Weight
TYPICAL LIMITS
Entire package: 0.1 W
Each resistor: 0.05 W
25 V
- 65 °C to + 125 °C
R
= 0.01 % (100 ppm)
Ratio
= 0.005 % (50 ppm)
R
= 0.015 % (150 ppm)
Ratio
= 0.01 % (100 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
= 0.005 % (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)
0.04 g
FIGURE 7 - DSM 10K/10K, 20 UNITS, LOAD LIFE
0.05 W each value, at + 70 °C
+ 60
+ 50
+ 40
+ 30
ΔRatio
(ppm)
+ 20
+ 10
0
- 10
- 20
- 30
- 40
- 50
250
500
1000
2000
Time (h)
Document Number: 63088
Revision: 22-Apr-2013
For any questions, contact:
foil@vishaypg.com
www.vishayfoilresistors.com
3
DSM
Vishay Foil Resistors
FIGURE 8 - DSM 10K/10K, 20 UNITS, HIGH TEMPERATURE EXPOSURE,
100 h at 125 °C, followed by low temperature storage, 24 h at - 65 °C
+ 80
+ 60
ΔRatio
(ppm)
+ 40
+ 20
0
- 20
- 40
High Temperature Exposure
Low Temperature Storage
TABLE 4 - RESISTANCE VALUE CODE LIST FOR POPULAR RATIOS
(other values available upon request)
VCODES
V0052
V0065
V0066
V0067
V0068
V0069
V0070
V0071
V0072
V0073
V0074
V0075
V0076
V0077
V0246
V0078
V0079
4
5
10
R1/R2
RATIO
100
50
R1
10K
10K
5K
10K
5K
10K
2K
10K
2K
1K
5K
2K
1K
500R
10K
2K
400R
R2
100R
200R
100R
400R
200R
500R
100R
1K
200R
100R
1K
400R
200R
100R
2K5
500R
100R
V0001
V0002
V0059
V0004
V0091
V0090
V0089
V0088
10K
5K
2K
1K
500R
400R
200R
100R
10K
5K
2K
1K
500R
400R
200R
100R
VCODES
V0080
V0081
V0082
V0083
25
V0084
V0085
20
V0086
V0087
1.25
2
R1/R2
RATIO
2.5
R1
1K
500R
10K
2K
1K
400R
200R
500R
R2
400R
200R
5K
1K
500R
200R
100R
400R
1
www.vishayfoilresistors.com
4
For any questions, contact:
foil@vishaypg.com
Document Number: 63088
Revision: 22-Apr-2013
DSM
Vishay Foil Resistors
TABLE 5 - GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PART NUMBER: Y1485V0067BA9W (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
1
4
8
5
V
0
0
6
7
B
A
9
W
PRODUCT CODE
1485
= DSM
RESISTANCE TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
CHARACTERISTICS
0
= silver plated or HSD tin/lead
9
= silver plated or HSD lead (Pb)-free
1 to 999
= custom
FOR EXAMPLE: ABOVE GLOBAL ORDER Y1485 V0067 B A 9 W:
TYPE: DSM
VALUES: 10K/400R
ABSOLUTE TOLERANCE: ± 0.1 %
TOLERANCE MATCH: 0.05 %
TERMINATION: silver plated or HSD lead (Pb)-free
AER: standard
PACKAGING: waffle pack
HISTORICAL PART NUMBER: DSM 10K 400R TCR2 B A S W (will continue to be used)
DSM
MODEL
10K 400R
OHMIC VALUE
R
1
= 10 k
R
2
= 400
TCR2
TCR
CHARACTERISTIC
B
ABSOLUTE
TOLERANCE
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.10 %
A
TOLERANCE
MATCH
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
S
TERMINATION
S
= silver plated or
HSD lead
(Pb)-free
B
= silver plated or
HSD 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.
Document Number: 63088
Revision: 22-Apr-2013
For any questions, contact:
foil@vishaypg.com
www.vishayfoilresistors.com
5
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