VISHAY VPR220, VPR221 Technical data

P R E C I S I O N B U L K M E T A L ® F O I L T E C H N O L O G Y

VISHAY MODELS VPR220 AND VPR221

Precision Foil Power Resistors in TO 220 Configuration

FIGURE 1 - VPR220 DIMENSIONS

0.400 ±0.010

0.150 ±0.008

(10.16 ±0.25)

(3.81

±0.2)

0.050 ±0.005

0.115 ±0.005

(1.27 ±0.13)

0.245 ±0.010

(2.92 ±0.13)

(6.22 ±0.25)

VISHAY

0.615 Max

0.141 ±0.005 Dia

(15.62)

VPR220

1K0 1%

(3.58 ±0.13)

9801

0.200 ±0.030

0.050 ±0.005

(5.08 ±0.76)

(1.27 ±0.13)

0.015

±0.002

0.540 ±0.040

(0.38

±0.05)

(13.72

±1.02)

0.030 ±0.002

(0.76 ±0.05)

0.078 ±0.005

0.200 ±0.005

(1.98 ±0.13)

(5.08 ±0.13)

Resistance		Tightest		TCR*
Range (Ω)		Resistance Tolerance
50 to 10K		±0.01%		±5 ppm/°C
25 to <50		±0.02%		±7 ppm/°C
10 to <25		±0.05%		±10 ppm/°C
5 to <10		±0.1%		±13 ppm/°C
Weight = 1 gm Max.			* Maximum specifications.

Lower values available but not recommended due to high TCR.

Models VPR220 AND VPR221, made from Vishay Bulk Metal® foil, offer low TCR, high stability, tight tolerance and fast response time in a small, molded resistor. Model VPR220 is a 2 lead device. Model VPR221 is a 4 lead Kelvin connected device. The 4 leaded version is highly recommended for precision applications requiring ohmic values of 100R or less.

FEATURES

• Power: 8 watts chassis mounted (per MIL-R-39009)

• Load Life Stability: ±0.05% maximum R at rated power and temperature for 2,000 hours

•Temperature Coefficient of Resistance: to ±5 ppm/°C

•Resistance Range: 0.5 to 10K Ω

•Tolerance: To ±0.01%

•Low Thermal EMF: 0.15 μV/°C maximum (lead effect)

•Non-Inductive Construction

•Heat sink is Isolated

FIGURE 2 - VPR221 DIMENSIONS

0.400 ±0.010

0.150 ±0.008

(10.16

±0.25)

(3.81

±0.2)

0.050 ±0.005

0.115 ±0.005

(1.27 ±0.13)

0.245 ±0.010

(2.92 ±0.13)

(6.22 ±0.25)

VISHAY

0.615 Max

0.141 ±0.005 Dia

(15.62)

VPR221

1K0

1%

(3.58 ±0.13)

9801

0.200 ±0.030

0.050 ±0.005

(5.08 ±0.76)

(1.27 ±0.13)

0.015 ±0.002

0.540 ±0.040

0.030 ±0.002

(0.38 ±0.05)

(13.72 ±1.02)

I1 E1 E2 I2

(0.76 ±0.05)

0.078 ±0.005

±

(1.98 ±0.13)

0.100

0.005

(2.54

±0.13)

Resistance

Tightest

TCR*

Range (Ω)

Resistance Tolerance

10 to 500

±0.01%

±5 ppm/°C

1 to <10

±0.02%

±5 ppm/°C

0.5 to <1

±0.05%

±5 ppm/°C

Weight = 1.2 gms Max.

* Maximum specifications.

Higher values available.

0.1 Ohms Available soon.

HOLE

VISHAY FOIL RESISTORS, 63 Lincoln Highway, P.O. Box 4004, Malvern, PA 19355-0988 • Phone [phone]

App. Eng. Phone [phone] • App. Eng. Fax [phone] • Sales Phone [phone] • Sales Fax [phone]

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