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
Ω
to 300 kΩ
•
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@vishay.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 (Ω)
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 %
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63163
Revision: 02-Sep-09
For any questions, contact:
foil@vishay.com
www.vishay.com
1
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
www.vishay.com
2
For any questions, contact:
foil@vishay.com
Document Number: 63163
Revision: 02-Sep-09
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
=
Ω
K
= kΩ
(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 kΩ
ABSOLUTE TOLERANCE: ± 0.02 %
TERMINATION: lead (Pb)-free
PACKAGING: bulk
Note
(1)
For non-standard requests, please contact application engineering.
Document Number: 63163
Revision: 02-Sep-09
For any questions, contact:
foil@vishay.com
www.vishay.com
3
Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay 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 Number: 91000
Revision: 18-Jul-08
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