VPR220 Datasheet, PDF (1/2 Pages) Vishay Siliconix – Precision Foil Power Resistors in TO 220 Configuration

PRECISION BULK METAL^® FOIL TECHNOLOGY
VISHAY MODELS VPR220 AND VPR221
Precision Foil Power Resistors in TO 220 Configuration
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 de-
vice. 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 1 - VPR220 DIMENSIONS
0.400 ±0.010
(10.16 ±0.25)
0.150 ±0.008
(3.81 ±0.2)
0.245 ±0.010
(6.22 ±0.25)
0.115 ±0.005
(2.92 ±0.13)
0.200 ±0.030
(5.08 ±0.76)
VISHAY
VPR220
1K0 1%
9801
0.540 ±0.040
(13.72 ±1.02)
0.141 ±0.005 Dia
(3.58 ±0.13)
0.050 ±0.005
(1.27 ±0.13)
0.030 ±0.002
(0.76 ±0.05)
0.200 ±0.005
(5.08 ±0.13)
0.050 ±0.005
(1.27 ±0.13)
0.615 Max
(15.62)
0.015 ±0.002
(0.38 ±0.05)
0.078 ±0.005
(1.98 ±0.13)
Resistance
Range (Ω)
50 to 10K
Tightest
Resistance Tolerance
±0.01%
TCR*
±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.
FIGURE 2 - VPR221 DIMENSIONS
0.400 ±0.010
(10.16 ±0.25)
0.150 ±0.008
(3.81 ±0.2)
0.245 ±0.010
(6.22 ±0.25)
0.115 ±0.005
(2.92 ±0.13)
0.200 ±0.030
(5.08 ±0.76)
VISHAY
VPR221
1K0 1%
9801
0.540 ±0.040
(13.72 ±1.02)
0.141 ±0.005 Dia
(3.58 ±0.13)
0.050 ±0.005
(1.27 ±0.13)
0.030 ±0.002
(0.76 ±0.05)
I₁ E₁ E₂ I₂
0.100 ±0.005
(2.54 ±0.13)
Resistance
Range (Ω)
Tightest
Resistance Tolerance
0.050 ±0.005
(1.27 ±0.13)
0.615 Max
(15.62)
0.015 ±0.002
(0.38 ±0.05)
0.078 ±0.005
(1.98 ±0.13)
TCR*
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.
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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