PB, PC Series Ultra PrUltra Precision Power Resistor (10 Wecision Power Resistor (10 Watts)atts) TCR, RESISTANCE RANGE, TOLERANCE, RATED POWER PC PB Rated TCR (ppm/C) Resistance Resistance Power Type 25C to Range Tolerance (%)* (W) 125C* () at 25C 1 to 5 015 (W) 0.4 to 1 (F, G, J) 0.5 to 5 1 to 5 (D, F, G, J) 0.1 to 5 5 to 10 (B, D, F, G, J) PB 015 (W) 0.05 to 5 10 to 25 05 (X) (A, B, D, F, G, J) 02.5 (Y) 0.02 to 5 25 to 50 2 (Q, A, B, D, F, G, J) in free air COMPOSITION OF TYPE NUMBER 0.01 to 5 50 to 50k (T, Q, A, B, D, F, G, J) and 0.002 to 0.5 to 5 015 (W) 0.05 (D, F, G, J) 10 PB X 50R000 B On heat 015 (W) 0.5 to 5 0.05 to 0.1 sink ** 05 (X) (D, F, G, J) 0.1 to 5 0.1 to 5 (B, D, F, G, J) PC 0.05 to 5 5 to 10 015 (W) (A, B, D, F, G, J) 05 (X) 0.02 to 5 02.5 (Y) Resistance value, in ohm, is expressed by a series of six 10 to 25 (Q, A, B, D, F, G, J) characters, five of which represent significant digits. R or K is 0.01 to 5 a dual-purpose letter that designates both the value range 25 to 100 (T, Q, A, B, D, F, G, J) (R for ohmic K for kilo-ohm) and the location of decimal point. * Symbols in parentheses are for type number composition. Resistance figures for type PB are the values obtained by measuring the leads at point 12.73.2 mm away from the root, but in case of resistance below 10 ohm, the values at 5.080.6 mm away. CONFIGURATION (DIMENSIONS IN mm) ** For heat sinking, an aluminum chassis in 152.4 (L) x 101.6 (W) x 50.8 (H) T x 1.0 mm (T) shall be used. W T1 Schematic of PC POWER DERATING CURVE IV PB IV 4-Terminal Connection D T W T1 I V PC I V D Type PB PC L 40.00.2 L 20.00.2 1 L 30.00.5 2 20.00.2 W 5.00.2 T T 1.00.1 1 15.00.5 F 3010 D Dia. 4.0 d Dia. 0.80.05 Dia. 1.20.05 www.alpha-elec.co.jp For any questions, contact Document No.: 67013 22 sales-alpha alpha-elec.co.jp Revision: 25-Apr-2016 d F d L1 F L1 L2 L L2 LPB, PC Series PERFORMANCE MIL-R-39009 ALPHA Typical Parameters Test Condition Specification Test Data Maximum Rated Operating Temperature 25C Working Temperature Range 55C to +155C Maximum Working Voltage 750V Maximum Working Current PB=5A, PC=32A Power Conditioning 25C, Rated Voltage, 96 hrs. 0.2% 0.2% Low Temperature Storage 55C, No Load, 24 hrs. 0.3% 0.005% Dielectric Withstanding Voltage Atmo. Pres.: AC 1 KV, 1 min. Baro. Pres. 8 mHg: AC 500V, 1min. 0.2% 0.005% Insulation Resistance DC 500V, 2 min. over 10,000 M over 10,000 M Low Temperature Operation 55C, Rated Voltage 0.3% 0.005% Overload Rated Voltage x 2.5, 5 sec. 0.3% 0.01% Moisture Resistance +65C to 10C, 90% RH to 98% RH, Rated Voltage, 10 cycles (240 hrs.) 0.5% 0.05% Terminal Strength 2.27 kg (5 pounds),10 sec. 0.2% 0.005% Shock 100G, 6 ms., Sawtooth Wave, X, Y, Z, each 3 shocks 0.2% 0.005% Vibration, High Frequency 20G, 10 Hz to 2,000 Hz to 10 Hz, 20 min., X, Y, Z, each 4 hrs. 0.2% 0.005% Life 25C, Rated Power, 1.5 hr. ON, 0.5 hr. OFF, 2,000 hrs. 1.0% 0.01% High Temperature Exposure 155C, No Load, 2,000 hrs. 1.0% 0.01% Solderability 245C, 5 sec. over 95% coverage FREQUENCY CHARACTERISTICS TEMPERATURE OF RESISTOR SURFACE Spots for Temperature Measurement (%) 0.4 (in still air) A: Mold Surface PB Screwed Down B: Element Surface 150 T (C) 70 B Aluminum Chassis A (15.5C/W) (19.2C/W) 1 152.4 mm (L) x 101.6 mm (W) 60 x 50.8 mm (H) x 1.0 mm (T) In Free Air 50 B (4.9C/W) 10 On Aluminum Chassis 40 100 100 A (3.4C/W) 30 2 k 20 10 50 12 34 56 78 910 (W) Applied Power 15 10 50 100 (MHz) AFFECT OF PB TYPE LEAD FOR RESISTANCE Frequency VALUE AND TCR f 0.8 Solder-Plated Copper/L=1cm FOUR-TERMINAL RESISTOR (%) (ppm/C) For low ohmic resistor (less than 10 ohm), the resistance value and TCR 1 100 of the copper lead increases overall resistance value. Four-terminal (Kelvin) connection is recommended per the following figure. Loading 0.1 10 current at terminals (V) causes measurement error. 0.01 1 Resistance Value TCR 0.001 0.1 0.0001 0.01 0.00001 0.001 0.1 1 10 100 1k Nominal Resistance Value (V) Resistance Value of Lead: 0.36V/cm TCR of Lead: 3,900 ppm/C Document No.: 67013 For any questions, contact www.alpha-elec.co.jp Revision: 25-Apr-2016 sales-alpha alpha-elec.co.jp 23 R(AC)/R(DC) Temperature Rise Additional Resistance Value Additional TCR