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