300144, 300145
Vishay Foil Resistors
Bulk Metal
®
Foil Technology High Precision Voltage Divider
Resistors with TCR Tracking to 0.5 ppm/°C and
Tolerance Match to 0.005 % (50 ppm)
FEATURES
•
Temperature coefficient of resistance (TCR)
absolute: ± 2 ppm/°C typical
(- 55 °C to + 125 °C, + 25 °C ref.)
TCR tracking: 0.5 ppm/°C
•
Tolerance: absolute and matching to 0.005 %
(50 ppm)
•
Power rating: 0.2 W at 70 °C, for the entire resistive
element R
1
and R
2
, divided proportionally between the two
values
•
Load life ratio stability: < 0.005 % (50 ppm) 0.2 W at 70 °C
for 2000 h
•
Maximum working voltage: 200 V
•
Resistance range: 100R to 20K per resistive element
•
Vishay Foil resistors are not restricted to standard
values/ratios; specific “as requested” values/ratios can be
supplied at no extra cost or delivery (e.g. 1K2345 vs. 1K)
•
Electrostatic discharge (ESD) up to 25 000 V
•
Non-inductive, non-capacitive design
•
Rise time: 1 ns effectively no ringing
•
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
•
Current noise: 0.010 µV
RMS
/V of applied voltage (< - 40 dB)
•
Thermal EMF: 0.05 µV/°C typical
•
Voltage coefficient: < 0.1 ppm/V
•
Non inductive: < 0.08 µH
•
Non hot spot design
•
Terminal finish: lead (Pb)-free or tin/lead alloy
•
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 see 300144Z, 300145Z (Z-Foil)
datasheet
INTRODUCTION
Why tight tolerance is important?
Why do users employ tight tolerance resistors? A system or
a device or one particular circuit element must perform for a
specified period of time and at the end of that service period
it must still be performing within specifications.
During its useful life it may have been subjected to some
hostile service conditions and it is no longer within purchased
tolerance.
What is ratio?
The ratio tolerances available in a divider are variable and
dependent on resistor technology. Bulk Metal
®
foil provides
the tightest ratio tolerance available.
The tight resolution capability and overall stability of foil
resistors permit adjustment within the divider to ratio not
available with other technologies. Ratios in network form, in
a common package have a better chance of holding tight
tolerances than those formed in a discrete matched set by
sorting.
Molded foil 300144, 300145 resistors can be provided in a
tolerance as tight as 0.005 %. Theoretically, ratios such as
these can be made initially with other resistor technologies.
However, less stable products will not hold these tight ratios
tolerances over time and applied stresses like voltage and
temperature.
Vishay Bulk Metal foil dividers/networks 300144, 300145
hold their ratio tolerances under defined circumstances.
Networks with tight ratio tolerances and controlled tracking
extend the useful life of equipment, whether expressed as
mean-time-between-failures (MTBF) or service periods to
recalibration or end-of-life-cycle.
How to avoid thermal EMF?
When the resistor’s terminals and the resistive element are
made of dissimilar metals and two junctions are at a different
temperature, a voltage is produced which is called “thermal
EMF”.
The level of voltage output is a function of the metals
involved and the differential temperature. The voltage
produced is either positive or negative depending on which
junction is considered as a reference point. Virtually all
resistive products have these metallic junctions. It is
presumed they will eventually be terminated to copper as a
final metallic combination and therefore copper is used as a
typical reference material.
300144, 300145 have the lowest thermal EMF’s because all
junctions have low microvolts outputs. Moreover,
construction of the resistive element is such that the input
and output junctions of the resistor are so close that the
temperature gradients between then is highly unlikely. These
design factors produce a divider with very low thermal EMF.
Our application engineering department is available to
advise and make recommendations. For non-standard
technical requirements and special applications. Please
contact us.
APPLICATIONS
•
•
•
•
•
•
•
•
Instrumentation amplifiers
Bridge networks
V
1
Differential amplifiers
V
2
Military
Space
Medical
Automatic test equipment
Down-hole (high temperature)
R
2
R
1
R
3
R
4
-
+
V
out
300144
300145
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63045
Revision: 23-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
1
300144, 300145
Vishay Foil Resistors
TABLE 1A - MODELS 300144 AND 300145
SPECIFICATIONS
RESISTANCE
VALUES
≥
500
Ω
to 20 kΩ
100
Ω
to < 500
Ω
ABSOLUTE
TOLERANCE
ABSOLUTE TCR
(- 55 °C to + 125 °C,
+ 25 °C ref.)
TYPICAL AND MAX.
SPREAD
± 2 ppm/°C ± 3 ppm/°C
TABLE 1B - MODELS 300144 AND 300145
SPECIFICATIONS
RESISTANCE
RATIO
1:1
> 1:1 to 4:1
> 4:1 to 10:1
> 10:1
TOLERANCE
MATCH
0.005 %
0.01 %
TCR TRACKING MAX.
0.5 ppm/°C
1.0 ppm/°C
1.5 ppm/°C
2.0 ppm/°C
± 0.005 %
± 0.01 %
Note
• See table 3 for additional established ratios
FIGURE 1 - TRIMMING TO VALUES
(conceptual illustration)
Interloop
Capacitance
Reduction
in Series
Mutual
Inductance
Reduction due
to Opposing
Current in
Adjacent Lines
Current Path
Before Trimming
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
FIGURE 2 - STANDARD PRINTING AND DIMENSIONS
in inches (millimeters)
Model 300144 and Schematic
(2)
0.295
(7.49)
VISHAY
9825
300144
0.1
(2.54)
Match
Tolerance
10K000
0.01
%
10K000
6
5
Model 300145 and Schematic
(2)(3)
0.375
(9.53)
4
0.2
(5.08)
Date Code
Model No.
0.015 ± 0.005
(0.38 ± 0.13)
0.025 ± 0.005
(0.64 ± 0.13)
0.320
(8.13)
R
1
R
2
6
5
4
1
Low
Resistance
Value
Indicator
R
4
1
2
3
Date Code
Model No.
VISHAY
0730
300145
0.375
(9.53)
10K000
0.01
%
10K000
R
3
0.75
(1)
(19.05)
0.015 ± 0.005
(0.38 ± 0.13)
1
2
3
R
1
0.75
(1)
(19.05)
Match
Tolerance
R
2
Dimensional Tolerance: ± 0.010" (0.25)
0.1 (2.54)
(1)
0.025 ± 0.005
(0.64 ± 0.13)
1
2
3
(2)
(3)
Lead wires: #22 AWG solder coated copper,
0.75" minimum length
Each divider pair consists of two resistors on one
single chip
For model 300145 the 2 chips are independent
and with no special relationship from chip to chip
1
2
3
0.1 (2.54)
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2
For any questions, contact:
foil@vishaypg.com
Document Number: 63045
Revision: 23-Mar-10
300144, 300145
Vishay Foil Resistors
FIGURE 3 - POWER DERATING CURVE
300144, 300145
100
%
FIGURE 4 - TYPICAL RESISTANCE/
TEMPERATURE CURVE
+ 150
+ 100
- 55 °C
+ 70 °C
Rated Power
Percent of Rated Power at + 70 °C
75
%
Δ
R
50
%
+ 50
0
R
(ppm)
Recommended
operation for
< 150 ppm
ΔR
Δ
after 2000 h
load life
- 50
- 100
- 150
- 200
- 55 - 50
- 25
0
+ 25
+ 50
+ 75
+ 100
2 ppm/
°
C
25
%
+ 125
0
- 75
Ambient Temperature (°C)
- 50
- 25
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
Note:
Power is divided proportionally between the 2 values
TABLE 2 - GLOBAL PART NUMBER INFORMATION
(1)
NEW GLOBAL PART NUMBER: Y0006V0058QT9L (preferred part number format)
DENOTES PRECISION
Y
VCODE
RESISTANCE
VALUE CODE
TOLERANCE MATCH
V
= 0.005 %
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
B
= 0.1 %
D
= 0.5 %
F
= 1.0 %
PACKAGING
L
= bulk pack
Y
0
0
0
6
V
0
0
5
8
Q
T
9
L
RESISTANCE TOLERANCE
V
= ± 0.005 %
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
D
= ± 0.5 %
F
= ± 1.0 %
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0006 V0058 Q T 9 L:
TYPE: 300144
VALUES: 2K/20K
ABSOLUTE TOLERANCE: ± 0.02 %
TOLERANCE MATCH: 0.01 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk pack
HISTORICAL PART NUMBER: 300144T 2K/20K TCR2 Q T B (will continue to be used)
300144
MODEL
300144
300145
T
TERMINATION
T
= lead (Pb)-free
None
= tin/lead alloy
2K/20K
OHMIC VALUE
R
1
= 2 kΩ
R
2
= 20 kΩ
R
3
(2)
R
4
(2)
TCR2
TCR
CHARACTERISTIC
Q
ABSOLUTE
TOLERANCE
V
T
Q
A
B
D
F
= ± 0.005 %
= ± 0.01 %
= ± 0.02 %
= ± 0.05 %
= ± 0.1 %
= ± 0.5 %
= ± 1.0 %
PRODUCT CODE
0006
= 300144
0035
= 300145
CHARACTERISTICS
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
T
TOLERANCE
MATCH
V
= 0.005 %
T
= 0.01 %
Q
= 0.02 %
A
= 0.05 %
B
= 0.1 %
D
= 0.5 %
F
= 1.0 %
B
PACKAGING
B
= bulk pack
Notes
(1)
For non-standard requests, please contact application engineering
(2)
For 300145 please specify the resistance value for each resistor even if all values are equal
Document Number: 63045
Revision: 23-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
3
300144, 300145
Vishay Foil Resistors
TABLE 3 - EXAMPLES OF VCODES FOR POPULAR VALUES
(other values available on request)
300144 RATIOS
VCODES
V0009
V0010
V0100
V0055
V0223
V0097
V0001
V0042
V0006
V0166
V0226
V0003
V0013
V0107
V0014
V0160
V0159
V0005
V0002
V0373
V0026
V0156
V0158
R
1
20K
20K
20K
19K4
17K5
15K
10K
10K
10K
10K
9K
9K
8K
6K
6K
6K
5K5
5K
5K
4K
3K
3K
2K7
R
2
20K
10K
2K
9K7
20K
15K
10K
8K323
2K
15K
10K
1K
16K
20K
7K
6K
7K7
10K
5K
12K
19K2
6K
10K
VCODES
V0058
V0030
V0029
V0059
V0103
V0154
V0032
V0121
V0004
V0379
V0374
V0022
V0091
V0162
V0378
V0061
V0088
V0380
V0375
V0381
V0377
V0376
-
R
1
2K
2K
2K
2K
2K
1K5
1K
1K
1K
1K
800R
511R
500R
500R
500R
300R
100R
100R
100R
100R
50R
35R
-
R
2
20K
18K
4K
2K
3K
3K
16K
2K
1K
7K
800R
16K2
500R
15K
4K5
300R
100R
15K
12K3
50R
28K
20K
-
VCODES
V0008
V0019
V0092
V0023
V0047
V0051
V0051
V0227
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R
1
10K
5K
1K
500R
100R
100R
100R
350R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
300145 RATIOS
R
2
10K
5K
7K812
500R
8K8
10K
10K
350R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R
3
10K
5K
7K812
500R
100R
100R
100R
350R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R
4
10K
5K
1K
500R
8K8
10K
10K
350R
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Note
• A combination of these values are available in reverse order and in values up to 5 digits
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4
For any questions, contact:
foil@vishaypg.com
Document Number: 63045
Revision: 23-Mar-10
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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