Bulk Metal
®
Foil Technology Tubular Axial-Lead Resistors,
Meets or Exceed MIL-R-39005 Requirements
VTA52 through 56, VMTA55, VMTB60
Vishay Foil Resistors
Document Number: 63011 For any questions, contact: foil@vishaypg.com www.foilresistors.com
Revision: 23-Mar-10 1
Any value and tolerance available within resistance range
This series of axial leaded resistors is made using the same
foil technology as the S102C. The difference is axial versus
radial leads. Axial leads have the advantage of readily
available auto insertion equipment while the radial leaded
devices may require additional tooling. Also, when
converting from metal film (RNC 55) to foil (VMTA 55) boards
may already be laid out for the axial leaded device. It is worth
noting that for new designs the S102C footprint is the
smallest in the industry (taking into account the need for lead
exit to board pad length allowance).
Our Application Engineering Department is available to
advise and to make recommendations. For non-standard
technical requirements and special applications, please
contact us.
FEATURES
• Temperature Coefficient of Resistance (TCR):
± 8 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.)
± 4 ppm/°C (0 °C to + 60 °C)
• Tolerance: to ± 0.01 %
• Load Life Stability:
± 0.05 % at 25 °C, 2000 hours at Rated Power
± 0.0025 % at 25 °C, 2000 hours at Low Power
• Electrostatic Discharge (ESD) above 25 000 Volts
• Resistance Range: 5 Ω to 500 kΩ
• Power Rating: 0.2 W to 1.0 W at 70 °C
• Non-Inductive, Non-Capacitive Design
• Thermal EMF: 0.1 µV/°C maximum, 0.05 µV/°C typical
• Voltage Coefficient: < 0.1 ppm/V
• Terminal Finishes available: Lead (Pb)-free
Tin/Lead
• For better performances, please contact Application
Engineering
• Any value available within resistance range (e.g. 1K2345)
• Prototype samples available from 48 hours. For more
information, please contact foil@vishaypg.com
Notes
1. For higher/lower resistance values, consult the Application Engineering Department
2. TCR options for values > 50 Ω
V4 = ± 4 ppm/°C (0 to + 60 °C); ± 8 ppm°C (- 55 °C to + 125 °C, + 25 °C Ref.)
V3 = ± 3 ppm/°C (0 to + 60 °C); ± 5 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.)
V2 = ± 2 ppm/°C (0 to + 60 °C); ± 5 ppm/°C (- 55 °C to + 125 °C, + 25 °C Ref.)
* Pb containing terminations are not RoHS compliant, exemptions may apply
TABLE 1 - TCR (for values under 50R)
VALUES 0 °C to + 60 °C
- 55 to + 125 °C,
+ 25 °C Ref.
25R - 50R ± 5 ppm/°C ± 8 ppm/°C
15R - 24R999 ± 6 ppm/°C ± 10 ppm/°C
5R - 14R999 ± 8 ppm/°C ± 12 ppm/°C
1R - 4R999 ± 15 ppm/°C ± 20 ppm/°C
FIGURE 1 - POWER DERATING CURVE
Available
Pb-free
RoHS*
COMPLIANT
220
180
160
140
120
100
80
60
40
20
0
30 40 50 60 70 80 90 100 110 120 130 140 150
Ambient Temperature (°C)
Percent of Power Rating at 70 °C
Double Rated Power
+ 145 °C
Rated
Power
200
TABLE 2 - MODEL SELECTION
VISHAY
MODEL
MIL
STYLE
POWER
MAXIMUM
WORKING VOLTAGE
RESISTANCE
RANGE
1)
(Ω)
TIGHTEST
TOLERANCE
TCR RANGE
2)
at + 70 °C at + 125 °C
VTA56 RBR56 0.25 W 0.125 W 300 V
5 to 24R9
25 to 150K
± 0.1 %
± 0.01 %
V4
V3, V2
VTA55 RBR55 0.3 W 0.15 W 300 V
5 to 24R9
25 to 150K
± 0.1 %
± 0.01 %
V4
V3, V2
VTA54 RBR54 0.5 W 0.25 W 300 V
5 to 24R9
25 to 300K
± 0.1 %
± 0.01 %
V4
V3, V2
VTA53 RBR53 0.66 W 0.33 W 300 V
5 to 24R9
25 to 300K
± 0.1 %
± 0.01 %
V4
V3, V2
VTA52 RBR52 1.0 W 0.5 W 300 V
5 to 24R9
25 to 500K
± 0.1 %
± 0.01 %
V4
V3, V2
VMTA55 RNC55 0.2 W 0.1 W 200 V
5 to 49R9
50 to 30K
± 0.1 %
± 0.01 %
V4
V3, V2
VMTB60 RNC60 0.25 W 0.125 W 250 V
5 to 49R9
50 to 60K
± 0.1 %
± 0.01 %
V4
V3, V2
