VPR5, VPR7
Vishay Foil Resistors
Bulk Metal® Foil Technology Power Current Sensing Resistors
with TCR of 5 ppm/°C and Power Rating up to 7 Watts
FEATURES
• Temperature Coefficient of Resistance (TCR):
Pb-free
5 ppm/°C (Above 10 Ω)
Available
10 ppm/°C (Below 10 Ω)
RoHS*
COMPLIANT
• Tolerance: to 0.01 %
• Resistance Range: 1 Ω to 100 kΩ
• Electrostatic Discharge (ESD) above 25 000 V
• Non Inductive, Non Capacitive Design
• Rise Time: 1.0 ns without ringing
• Current Noise: < - 40 dB
Any value available within resistance range
• Thermal EMF: < 0.05 µV/°C typical
• Voltage Coefficient: < 0.1 ppm/V
• Non-Inductive: < 0.08 µH
These Bulk Metal® Foil power current sensing resistors are
direct replacements for certain wirewound devices but
without the inductive characteristics of wirewounds. The
anodized aluminum housing is drilled and countersunk to
accept flat head screws for thermal mounting. Because the
device is internally Kelvin connected, there is no restriction
on the lead lengths as would be the case if this were a two
terminal device. Frequently used in YIG oscillator circuits
these devices contribute to superior frequency stability.
• Non Hot Spot Design
• Terminal Finishes available: Lead (Pb)-free
Tin/Lead Alloy
• Prototype Samples available from 48 hours. Please
contact foil@vishay.com
• For better performances, please contact us
FIGURE 1 - POWER DERATING CURVE
TABLE 1 - SPECIFICATIONS
RESISTANCE
RANGE
MAXIMUM POWER1)
WORKING RATING
VOLTAGE at 25 °C
+ 25
MODEL
NUMBER
TOLERANCE
TO
+ 100
(Ω)
+ 75
+ 50
+ 25
0
1 to 10
> 10 to 100
> 100 to 100K
1 to 10
0.1 %
0.05 %
0.01 %
0.1 %
VPR5
VPR7
300 V
300 V
5 W
7 W
> 10 to 100
> 100 to 100K
0.05 %
0.01 %
- 50
- 55
0
+ 50
+ 100
+ 150
Ambient Temperature (°C)
Note
1. Mounted on aluminum chassis (6" L x 4" W x 2" H x 0.040" Th)
per MIL-R-39009/1B.
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63013
Revision: 05-Jun-07
For any questions, contact: foil@vishay.com
www.vishay.com
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