Document Number: 63050

For any questions, contact: foil@vishay.com

www.vishay.com

Revision: 29-Feb-08

1

VPR220S, VPR221S

Vishay Foil Resistors

Resistors in TO-220 Configuration with TCR of ± 2 ppm/°C,

Tolerance of to ± 0.01 % and Power Rating to 8 W

Any value at any tolerance within resistance range

Models VPR220S AND VPR221S, made from Vishay Bulk

fast response time in a small, molded resistor. Model

VPR220S is a 2 lead device. Model VPR221S is a 4 lead

Kelvin connected device. The 4 leaded version is highly

recommended for precision applications requiring ohmic

values of 100R or less.

weight = 1 g maximum

Notes

1. Lower or high values available upon request

2. - 55 °C to + 125 °C, + 25 °C ref.

weight = 1.2 g maximum

Notes

1. Lower or high values available upon request

2. - 55 °C to + 125 °C, + 25 °C ref.

FEATURES

• Temperature coefficient of resistance (TCR):

± 2 ppm/°C typical (- 55 °C to + 125 °C,

+ 25 °C Ref.)

• Tolerance: to ± 0.01 % (see tables 1 and 2)

• Electrostatic discharge (ESD): above 25 000 V

• Load life stability: ± 0.005 % (25 °C, 2000 h at rated power)

• Resistance range: 0.5 Ω to 10 kΩ

• Power rating: 8 W chassis mounted (per MIL-PRF-39009)

• Non inductive, non capacitive design

• Rise time: 1 ns without ringing

• Current noise: < - 40 dB

• Voltage coefficient: < 0.1 ppm/V

• Non inductive: < 0.08 µH

• Non hot spot design

• Thermal EMF: 0.05 µV/°C typical

• Terminal finishes available:

lead (Pb)-free

tin/lead alloy

• Any value available within resistance range (e.g. 1K234)

• Prototype samples available from 48 h. For more

information, please contact foil@vishay.com

• For better performances, please see VPR220SZ and

VPR221SZ datasheets

* Pb containing terminations are not RoHS compliant, exemptions may apply

TABLE 1 - VPR220S

RESISTANCE

RANGE (

TIGHTEST

TOLERANCE

TYPICAL

MAXIMUM

50 to 10K

± 0.01 %

± 2

± 5 ppm/°C

25 to < 50

± 0.02 %

± 2

± 7 ppm/°C

10 to < 25

± 0.05 %

± 2

± 10 ppm/°C

5 to < 10

± 0.1 %

± 2

± 13 ppm/°C

TABLE 2 - VPR221S

RESISTANCE

RANGE (

TIGHTEST

TOLERANCE

TYPICAL

MAXIMUM

10 to < 500

± 0.01 %

± 2

± 5 ppm/°C

1 to < 10

± 0.02 %

± 2

± 5 ppm/°C

0.5 to < 1

± 0.05 %

± 2

± 5 ppm/°C

FIGURE 1 - POWER DERATING CURVE

Available

Pb-free

RoHS*

COMPLIANT

I

1

E

1

E

2

I

2

R

V

I

I

Ambient Temperature (°C)

+ 150

+ 125

+ 100

+ 75

+ 50

+ 25

0

- 25

- 50

+ 100

+ 75

+ 50

+ 25

0

- 55 °C