VTA52 through 56, VMTA55, VMTB60
Vishay Foil Resistors
Bulk Metal
®
Foil Technology
Tubular Axial-Lead Resistors, Meets or Exceed
MIL-R-39005 Requirements
www.vishay.com For any questions, contact: foil@vishay.com Document Number: 63011
2 Revision: 05-Jun-07
FIGURE 2 - VTA/VMTA SERIES STANDARD PRINTING
VTA52V4
0720
VISHAY
Model Number
VTA52
TCR Designation
V4
Resistance Value
200 kΩ
Tolerance
200K00
0.02 %
Date Code
A
B
D
C
07
year
week
20
FIGURE 3 - TRIMMING TO VALUES
(Conceptual Illustration)
Mutual Inductance
Reduction due
to Change in
Current Direction
Current Path
Before Trimming
Note: Foil shown in black, etched spaces in white
Interloop Capacitance
Reduction in Series
Trimming Process
Removes this Material
from Shorting Strip Area
Changing Current Path
and Increasing
Resistance
Current Path
After Trimming
TABLE 3 - VTA/VMTX DIMENSIONS
VISHAY
MODEL
MIL
SIZE
BODY LEAD
LENGTH (A) DIAMETER (B) LENGTH (C) DIAMETER (D)
INCH mm INCH mm INCH mm INCH mm
VTA56 RBR56 0.356 9.04 0.260 6.60 1.5 Minimum 38.10 0.032 0.81
VTA55 RBR55 0.500 ± 0.020 12.70 ± 0.51 0.260 6.60 1.5 Minimum 38.10 0.032 0.81
VTA54 RBR54 0.750 19.05 0.260 6.60 1.5 Minimum 38.10 0.032 0.81
VTA53 RBR53 0.750 ± 0.020 19.05 ± 0.51 0.375 ± 0.015 9.53 ± 0.38 1.5 Minimum 38.10 0.032 0.81
VTA52 RBR52 1.000 25.40 0.375 ± 0.015 9.53 ± 0.38 1.35 Minimum 34.29 0.032 0.81
VMTA55 RNC55 0.270 ± 0.005 6.86 ± 0.13 0.120 3.05 1.5 Minimum 38.10 0.025 0.64
VMTB60 RNC60 0.375 ± 0.005 9.53 ± 0.13 0.160 ± 0.005 4.06 ± 0.13 1.5 Minimum 38.10 0.025 0.64
+ 0.005
- 0.010
--------------------
+ 0.13
- 0.25
----------------
+ 0.005
- 0.015
--------------------
+ 0.13
- 0.38
----------------
+ 0.005
- 0.010
--------------------
+ 0.13
- 0.25
----------------
+ 0.020
- 0.032
--------------------
+ 0.51
- 0.81
----------------
+ 0.005
- 0.010
--------------------
+ 0.13
- 0.25
----------------
+ 0.020
- 0.032
--------------------
+ 0.51
- 0.81
----------------
+ 0.005
- 0.010
--------------------
+ 0.13
- 0.25
----------------
FIGURE 4 - TEMPERATURE COEFFICIENT OF RESISTANCE
+ 400
+ 200
0
- 200
- 400
0 + 25
- 140
Temperature, °C
+ 140
+ 100
- 100
ΔR
R
(ppm)
+ 60
+ 4 ppm/°C
- 4 ppm/°C
