3W to 50W PLANAR SHOCK / VIBRATION PROOF HIGH POWER RESISTORS Features………………………………………………………… Applications……………………………………………… . Non-Inductive planar package High power density. Thin package for high density PCB installation. Power dissipated above the board. RoHS compliant. Superior vibration durability ……… Ideal for extreme mechanically stressed environments. Power supply pre-load resistors. UPS systems Snubber and pulse handling circuits. Pulse generator load resistors. In-rush current protection Bleeder Resistors Specification Model Dimensions (inch / mm) Dim A Dim B .040±.005 1.02±0.13 Dim. A ±.005 ±0.13 Dim. B ±.005 ±0.13 Dim C Dim D BPR Dim. C ±.020 ±0.51 .200±.020 5.08±0.51 .020±.005 0.51±0.13 Dim. D ±.015 ±0.38 BPR 3 0.50 12.70 0.60 15.24 0.67 17.02 0.30 7.62 BPR 5 0.50 12.70 1.00 25.40 1.07 27.18 0.30 7.62 BPR 7 1.00 25.40 0.75 19.05 0.82 20.82 0.80 20.32 BPR 10 BPR 20 BPR 30 1.00 2.00 2.10 25.40 50.80 53.34 1.00 1.00 1.40 25.40 25.40 35.56 1.07 1.07 1.47 27.18 27.18 37.34 0.80 1.80 1.90 20.32 45.72 48.26 BPR 40 BPR 50 2.10 2.10 53.34 53.34 1.90 2.20 48.26 55.88 1.97 2.27 50.04 57.66 1.90 1.90 48.26 48.26 Materials Lead: Tin Plated Phosphor Bronze Substrate: 96% Alumina Resistor: Ruthenium Oxide .040±.005 1.02±0.13 .200±.002 5.08±0.05 Notes: 1. Contact factory for custom products, non-standard values and tolerances. Items Power Rating Operating Voltage Max Resistance Range TCR Tolerance 3W, 5W, 7W, 10W, 20W, 30W, 40W & 50W, Conditions @ ambient temp < 70°C 300Vac, 500VDC 0.1Ω to 200 KΩ 100 ppm/°C +/-5%, optional 1%, 2% Extended resistance range available. For -55 to +155°C and above 1Ω Operation Temp. Range -55 - +155 °C Dielectric Withstanding Voltage 5KV minimum Mechanical Shock ∆R +/- 0.25 % 100G. Load Life ∆R +/- 2.0 % 70°C, 90 min. ON, 30 min.OFF, 1000 hours. Humidity ∆R +/- 0.5 % 85°C, 85% RH, DC 0.1W, 1000 hours. Temperature Cycle ∆R +/- 0.5% -55°C, 30 min.,+155°C 30min., 5cycles. Soldering Heat (Max) Solderability 1 Specification ∆R +/- 0.25 % 250+/-5°C, 10 seconds, Min 95% coverage 230+/-5°C, 5 seconds. Insulation Resistance Over 1000 MΩ Between terminals and metal back plate. Vibration ∆R +/- 0.25 % 20G, 10Hz to 2 KHz. Specifications subject to change without notice BPR 3W to 50W PLANAR HIGH POWER RESISTORS Derating Curve % Power Rating 100 80 60 40 20 0 70°C +155°C Resistor Temperature (°C) Ordering Information BPR 10 500 F Model Power Rating Code 3 : 3W, 5 : 5W 7 : 7W 10 : 10W 20 : 20W 30 : 30W 40 : 40W 50 : 50W Resistance Code 50 Ω : 500 First two digits significant, last digit: number of trailing zeros 2 Tolerance J = 5% Tol G = 2% Tol F = 1% Tol