VPR220100R01

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 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. THROUGH HOLE 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) 0.245 ±0.010 (6.22 ±0.25) VISHAY VPR220 1K0 1% 9801 FIGURE 2 - VPR221 DIMENSIONS 0.050 ±0.005 (1.27 ±0.13) 0.615 Max (15.62) 0.200 ±0.030 (5.08 ±0.76) 0.400 ±0.010 (10.16 ±0.25) 0.245 ±0.010 (6.22 ±0.25) VISHAY VPR221 1K0 1% 9801 0.150 ±0.008 (3.81 ±0.2) 0.115 ±0.005 (2.92 ±0.13) 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) 0.150 ±0.008 (3.81 ±0.2) 0.115 ±0.005 (2.92 ±0.13) 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) 0.050 ±0.005 (1.27 ±0.13) 0.615 Max (15.62) 0.200 ±0.030 (5.08 ±0.76) 0.540 ±0.040 (13.72 ±1.02) 0.015 ±0.002 (0.38 ±0.05) 0.540 ±0.040 (13.72 ±1.02) I1 E1 E2 I2 0.100 ±0.005 (2.54 ±0.13) 0.015 ±0.002 (0.38 ±0.05) 0.200 ±0.005 (5.08 ±0.13) 0.078 ±0.005 (1.98 ±0.13) 0.078 ±0.005 (1.98 ±0.13) Resistance Range (Ω) 50 to 10K 25 to