VTA52Z through VTA56Z, VMTA55Z, VMTB60Z (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Bulk Metal
®
Z-Foil Technology Tubular
Axial Lead Resistors with TCR of ± 0.05 ppm/°C,
Tolerance to ± 0.01 % and Load Life Stability of ± 0.005 %
FEATURES
Temperature coefficient of resistance (TCR):
(see table 1)
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
± 0.05 ppm/°C typical (0 °C to + 60 °C)
Resistance range: 5
to 300 k
Vishay Foil resistors are not restricted to standard values;
specific “as required” values can be supplied at no extra
cost or delivery (e.g. 1K2345 vs. 1K)
Tolerance: to ± 0.01 %
Load life stability:
± 0.005 % (50 ppm) at 70 °C, 2000 h at rated power
Electrostatic discharge (ESD) up to 25 000 V
Power rating: 0.2 W to 1.0 W at 70 °C
Non-inductive, non-capacitive design (low noise)
Thermal EMF: 0.1 µV/°C maximum, 0.05 µV/°C typical
Voltage coefficient: < 0.1 ppm/V
Thermal stabilization time < 1 s (nominal value achieved
within 10 ppm of steady state value)
Terminal finish: lead (Pb)-free, tin/lead
Compliant to RoHS directive 2002/95/EC
For better performances, please contact application
engineering
Prototype quantities available in just 5 working days or
sooner. For more information, please contact
foil@vishaypg.com
INTRODUCTION
This series of axial resistors uses the same Foil technology
as the Z201 but with axial leads instead of radial leads. Axial
leads have the advantage of using readily available auto
insertion equipment while the radial leaded devices may
require additional tooling. Also, when converting from metal
film (RNC 55) to Bulk Metal
®
Foil (VMTA55Z) boards may
already be laid out for the axial leaded device.
Our application engineering department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact us.
TABLE 1 - TYPICAL TCR ppm/°C AND
MAXIMUM SPREAD
(1)
VALUES
5R to < 15R
15R to < 25R
25R to < 50R
50R to < 100R
> 100R
Note
(1)
FIGURE 1 - POWER DERATING CURVE
200
%
- 55 °C
+ 70 °C
- 55 °C to + 125 °C, + 25 °C Ref.
± 0.2 ± 4.8
± 0.2 ± 3.8
± 0.2 ± 2.8
± 0.2 ± 2.3
± 0.2 ± 1.8
Percent of Rated Power at + 125 °C
Double Rated Power
175
%
150
%
125
%
100
%
75
%
50
%
25
%
0
- 75 - 50 - 25
Rated Power
Recommended
for operation
with
< 150 ppm
ΔR
after
2000 h load life
For non-standard
engineering
requests,
please
contact
application
0
+ 25 + 50 + 75 + 100 + 125 + 150 + 175 + 200
Ambient Temperature (°C)
TABLE 2 - MODEL SELECTION
VISHAY
MODEL
VTA56Z
VTA55Z
VTA54Z
VTA53Z
VTA52Z
VMTA55Z
VMTB60Z
MIL STYLE
RBR56
RBR55
RBR54
RBR53
RBR52
RNC55
RNC60
POWER
at + 70 °C
at + 125 °C
0.25 W
0.3 W
0.5 W
0.66 W
1.0 W
0.2 W
0.25 W
0.125 W
0.15 W
0.25 W
0.33 W
0.5 W
0.1 W
0.125 W
MAXIMUM
WORKING VOLTAGE
300 V
300 V
300 V
300 V
300 V
200 V
250 V
RESISTANCE
RANGE ()
5 to 24R9
25 to 100K
5 to 24R9
25 to 100K
5 to 24R9
25 to 200K
5 to 24R9
25 to 200K
5 to 24R9
25 to 300K
5 to 49R9
50 to 30K
5 to 49R9
50 to 60K
TIGHTEST
TOLERANCE
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
± 0.1 %
± 0.01 %
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* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63163
Revision: 29-Mar-10
For any questions, contact:
foil@vishaypg.com
VTA52Z through VTA56Z, VMTA55Z, VMTB60Z (Z-Foil)
Vishay Foil Resistors
FIGURE 2 - VTAZ/VMTAZ SERIES
STANDARD PRINTING
A
Model Number
VTA52Z
C
FIGURE 3 - TRIMMING TO VALUES
(conceptual illustration)
Date Code
01
09
year week
VTA52Z
0901
VISHAY
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
200K00
0.02
%
Resistance Value
200 kΩ
B
D
Tolerance
Mutual Inductance
Reduction due
to Change in
Current Direction
Note:
Foil shown in
black,
etched spaces in
white
TABLE 3 - VTAZ/VMTXZ DIMENSIONS
BODY
VISHAY
MODEL
VTA56Z
VTA55Z
VTA54Z
VTA53Z
VTA52Z
MIL
SIZE
INCH
RBR56
RBR55
RBR54
RBR53
RBR52
0.356
+ 0.005
-------------------
-
- 0.010
9.04
LENGTH (A)
mm
+ 0.13
----------------
- 0.25
DIAMETER (B)
INCH
0.260
0.260
0.260
0.375
0.375
0.120
0.160
+ 0.005
-------------------
-
- 0.015
+ 0.005
-------------------
-
- 0.010
+ 0.005
-------------------
-
- 0.010
± 0.015
± 0.015
+ 0.005
-------------------
-
- 0.010
± 0.005
6.60
6.60
6.60
9.53
9.53
3.05
4.06
mm
+ 0.13
----------------
- 0.38
+ 0.13
----------------
- 0.25
+ 0.13
----------------
- 0.25
± 0.38
± 0.38
+ 0.13
----------------
- 0.25
± 0.13
LENGTH (C)
INCH
1.5 min.
1.5 min.
1.5 min.
1.5 min.
1.35 min.
1.5 min.
1.5 min.
mm
38.10
38.10
38.10
38.10
34.29
38.10
38.10
LEAD
DIAMETER (D)
INCH
0.032
0.032
0.032
0.032
0.032
0.025
0.025
mm
0.81
0.81
0.81
0.81
0.81
0.64
0.64
0.500 ± 0.020
0.750
+ 0.020
-------------------
-
- 0.032
12.70 ± 0.51
19.05
+ 0.51
----------------
- 0.81
0.750 ± 0.020
1.000
+ 0.020
-------------------
-
- 0.032
19.05 ± 0.51
25.40
+ 0.51
----------------
- 0.81
VMTA55Z RNC55
VMTB60Z RNC60
0.270 ± 0.005
0.375 ± 0.005
6.86 ± 0.13
9.53 ± 0.13
FIGURE 4 - TYPICAL RESISTANCE/TEMPERATURE CURVE
+ 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
0.05 ppm/°C
- 0.1 ppm/°C
0.1 ppm/°C
0.14 ppm/°C
0.2 ppm/°C
Ambient Temperature (°C) and TCR Chord Slopes for Different Temperature Ranges
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For any questions, contact:
foil@vishaypg.com
Document Number: 63163
Revision: 29-Mar-10
VTA52Z through VTA56Z, VMTA55Z, VMTB60Z (Z-Foil)
Vishay Foil Resistors
POST MANUFACTURING OPERATIONS OR PMO
Many analog applications can include requirements for
performance under conditions of stress beyond the normal
and over extended periods of time. This calls for more than
just selecting a standard device and applying it to a circuit.
The standard device may turn out to be all that is needed but
an analysis of the projected service conditions should be
made and it may well dictate a routine of stabilization known
as post manufacturing operations or PMO. The PMO
operations that will be discussed are only applicable to Bulk
Metal Foil resistors. They stabilize Bulk Metal Foil resistors
while they are harmful to other types. Short time overload,
accelerated load life, and temperature cycling are the three
PMO exercises that do the most to remove the anomalies
down the road. Vishay Bulk Metal Foil resistors are
inherently stable as manufactured. These PMO exercises
are only of value on Bulk Metal Foil resistors and they
improve the performance by small but significant amounts.
Users are encouraged to contact Vishay Foil applications
engineering for assistance in choosing the PMO operations
that are right for their application.
TABLE 4 - GLOBAL PART NUMBER INFORMATION
DENOTES PRECISION
Y
VALUE
R
=
K
= k
(1)
NEW GLOBAL PART NUMBER: Y009320K1230Q9L (preferred part number format)
CHARACTERISTICS
0
= standard
9
= lead (Pb)-free
1 to 999
= custom
Y
0
0
9
3
2
0
K
1
2
3
0
Q
9
L
PRODUCT CODE
0090
= VTA52Z
0091
= VTA53Z
0092
= VTA54Z
0093
= VTA55Z
0095
= VTA56Z
0096
= VMTA55Z
0097
= VMTB60Z
RESISTANCE TOLERANCE
T
= ± 0.01 %
Q
= ± 0.02 %
A
= ± 0.05 %
B
= ± 0.1 %
C
= ± 0.25 %
D
= ± 0.5 %
F
= ± 1.0 %
PACKAGING
L
= bulk
FOR EXAMPLE: ABOVE GLOBAL ORDER Y0093 20K1230 Q 9 L:
TYPE: VTA55Z
VALUE: 20.123 k
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk
Note
(1)
For non-standard requests, please contact application engineering.
Document Number: 63163
Revision: 29-Mar-10
For any questions, contact:
foil@vishaypg.com
www.foilresistors.com
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Vishay Precision Group
Disclaimer
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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
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properties described in the product specification is suitable for use in a particular application.
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Document No.: 63999
Revision: 27-Apr-11
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