Ultra-Precision Resistor (Hermetically Sealed) TCR, Resistance Range, Tolerance, Rated Power HC HD HG TCR (ppm/C) Resistance Type -55C to +125C Range() 1 to 5 015 (W) 5 to 30 05 (X) HC HD 05 (X) 02.5 (Y) 30 to 120k 01 (Z)** 1 to 10 HG 02.5 (Y) 01 (Z)** 10 to 10k Rated Power (W) at 125C Resistance Tolerance (%)* 0.5 (D) 1 (F) 0.1 (B) 0.5 (D) 1 (F) 0.005 (V) 0.01 (T) 0.02 (Q) 0.05 (A) 0.1 (B) 0.5 (D) 1 (F) 0.3 0.01 (T) 0.02 (Q) 0.05 (A) 0.1 (B) 0.5 (D) 1 (F) 0.3 0.005 (V) 0.01 (T) 0.02 (Q) 0.05 (A) 0.1 (B) 0.5 (D) 1 (F) Symbols in parentheses are for type number composition. *Resistance figures are obtained by measuring the leads at point 12.73.2mm away from the base for type HC and HD, but, in case of resistance below 10 ohm, the value at 1.60.6mm away from the base for all types. **Temperature characteristic Z is applicable for temperature range between 0C and 60C. Composition of Type Number Example: Power Derating Curve Tolerance Resistance Value TCR Type Resistance value, in ohm, is expressed by a series of six characters, five of which represent significant digits. The sixth R or K is a dual-purpose letter that designates both the value range (R for ohmic; K for kilo-ohm) and the location of decimal point. Configuration (%) 250 Rated Power Percentage HC Y 30K000 T 200 150 100 50 70 25 HC, HD Type HG Type L T L 50 75 100 125 Ambient Temperature 150 (C) T Four-Terminal (Kelvin) Connection W W d d1 F Type L W T F F1 d d1 d d d1 d L F1 F HC HD 10.70.3 10.70.3 4.30.3 3.810.25 5.080.25 Four-Terminal Resistor HG 19.00.3 12.80.3 8.80.3 2.540.25 5.080.25 3010 0.650.05 0.80.05 Dimensions in mm 28 For low ohmic resistor (less than 10 ohm), the resistance value and TCR of the copper lead increases overall resistance value. Four-terminal (Kelvin) connection is recommended per the following figure. Loading current at voltage and current terminals (V, I) causes measurement error. i i r1 r2 I I r3 V r4 V Performance Parameters MIL-PRF-55182/9 Specification Test Condition Power Conditioning Thermal Shock Overload ALPHA Typical Test Data 125C -65C to +150C 300V Maximum Rated Operating Temperature Working Temperature Range Maximum Working Voltage 125C, Rated Power, 100 hrs. -65C/30 min. +150C/30 min., 5 cycles Rated Power x 6.25, 5 sec. (0.20%+0.01) 0.05% 0.05% over 95% coverage 0.0025% 0.0025% 0.0025% over 95% coverage no damage no damage 0.05% 0.05% 0.02% 0.0025% 0.0025% 0.001% 0.02% over 10,000M 0.02% 0.05% 0.0025% over 10,000M 0.0025% 0.0025% Solderability Steam Aging 8 hrs., 245C, 5 sec. Resistance to Solvents 1 lsopropyl Alcohol + Mineral Spirits 2 Water + Butyl Cellosolve + Monoethanolamine Low Temperature Storage Low Temperature Operation Terminal Strength -65C, 24 hrs. -65C, Rated Voltage, 45 min. 0.908kg (2 pounds), 10 sec. Dielectric Withstanding Voltage Insulation Resistance Resistance to Soldering Heat Moisture Resistance Atmospheric: 300V rms. Barometric: 200V rms. DC 100V, 2 min. +260C, 10 sec. 2 sec. +65C to -10C, 90% RH to 98% RH, Rated Voltage, 10 cycles (240 hrs.) Shock (Specified Pulse) Vibration, High Frequency 100G, 6ms., Sawtooth Wave, X, Y, each 10 shocks 20G, 10Hz to 2,000Hz to 10Hz, 20 min., X, Y, each 4 hrs. 0.01% 0.02% 0.0025% 0.0025% Life 125C, Rated Voltage, 1.5 hrs. - ON, 0.5 hr. - OFF, 2,000 hrs. 0.05% 0.01% 70C Power Rating 70C, Rated Voltage x 2, 1.5 hrs. - ON, 0.5 hr. - OFF, 2,000 hrs. 0.05% 0.01% Storage Life 15C to 35C, 15% RH to 75% RH, No Load, 10,000 hrs. 0.005 % 0.0005 % High Temperature Exposure 150C, No Load, 2,000 hrs. 0.5 % 0.01 % -32dB 0.0001%/V 1.0V/C -42dB 0.00003%/V 0.1V/C Current Noise Voltage Coefficient Thermal EMF Frequency Characteristics Temperature of Resistor Surface (%) T (C) HC, HD Surface of Resistive Element HG Surface of 60 Resistive Element 70 HC 150 HC, HD R = 0.15C/mW HG R = 0.07C/mW 100 100 1k esiR eruarepmeT )CD(R/)CA(R 10 50 40 30 50 20 10k 10 1 5 10 50 100 Frequency 500 (MHz) HC, HD Surface of Hermetically Sealed HG Surface of Hermetically Sealed 100 200 300 400 500 600 700 800 (mW) Applied Power Precaution in Using HC, HD or HG Resistors When soldering to mount HC, HD or HG on a board, keep the resistor over 10mm away from the board surface by using an insulating tube. 29