PRECISION HIGH-VOLTAGE THICK FILM RESISTORS ISO-9001 Registered Diamond spiraled thick film element CGH SERIES Heat conducting ceramic substrate Epoxy coated body High conductivity plated on nickel termination * * * * 1/4 watt to 5 watt 100K ohm to 2000 megohm range 0.5%, 1%, 2% or 5% tolerance TCR of 50 or 100 ppm/C All welded cap and lead construction Tin Lead electroplated leads SPECIFICATIONS: IRC Type Power Rating Voltage Rating @ 70C (watts)1 (volts)2 Resistance Range (ohms)3 Tol (%)4 Maximum TCR (ppm/C)4 VCR (ppm/V)5 CGH-1/4 1/4 750 100K-100M .5, 1, 2, 5 50, 100 0 to -5 CGH-1/2 1/2 1,500 100K-500M .5, 1, 2, 5 50, 100 0 to -5 CGH-1 1 3,000 50K-750M .5, 1, 2, 5 50, 100 0 to -5 CGH-2 2 5,000 100K-1500M .5, 1, 2, 5 50, 100 0 to -5 CGH-3 3 10,000 200K-2000M .5, 1, 2, 5 50, 100 0 to -5 CGH-5 5 20,000 300K-2000M .5, 1, 2, 5 50, 100 0 to -5 NOTES: 1. For power rating above 70C, see derating curve. 2. Voltage rating shown is the rated DC continuous working voltage or the sine-wave RMS absolute maximum voltage at commercial line frequency. For DC applications the absolute maximum permissible voltage is 1.5 times the value shown for low repetition short-time-overload or pulse conditions of 10 seconds or less duration. 3. Contact factory for higher resistance values. 4. For CGH-1 and 2 above 500 meg and CGH-3 and 5 above 1000M only 2 and 5% tolerance and 100 ppm/C TCR available. 5. Typical voltage coefficient of resistance is -1 to -2 ppm/V measured at full rated voltage and 10% rated voltage. DIMENSIONS (Inches and (mm)): 1.500.125 (38.13.2) 0.032 (0.81) DIA.* * CGH 1/4 leads are 0.025 (0.64) in diameter IRC Type CGH-1/4 CGH-1/2 CGH-1 CGH-2 CGH-3 CGH-5 Body Length - BL Body Diameter - BD Clean Lead to Clean Lead - CL 0.2750.031 (6.980.79) 0.4000.031 (10.160.79) 0.6900.062 (17.531.57) 1.0620.062 (26.971.57) 2.0620.062 (52.371.57) 3.0620.062 (77.771.57) 0.0880.010 (2.220.25) 0.1380.016 (3.510.41) 0.2970.031 (7.540.79) 0.2970.031 (7.540.79) 0.2970.031 (7.540.79) 0.2970.031 (7.540.79) 0.400 (10.16) 0.525 (13.34) 0.900 (22.86) 1.250 (31.75) 2.250 (57.15) 3.250 (82.55) WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com 1 ISO-9001 Registered CGH ENVIRONMENTAL PERFORMANCE: TEST CONDITION1 Temperature Shock Short-Time Overload (1.5 times rated V for 10 sec) Solder Effect Terminal Strength Moisture Resistance (no load or polar) Load Life (1000 Hours at 70C) Shelf Life (1 year at 25C) High -Temperature Exposure (150C for 2000 Hours) (175C for 2000 Hours) Dielectric Breakdown3 (1/4 and 1/2 watt size) (1 watt through 5 watt size) Dielectric Strength4 Insulation Resistance at 500 VDC Maximum R ) (3 Typical2 R 0.25% 0.20% 0.015% 0.20% 0.50% 1.00% 0.10% 0.75% 1.0% 0.10% 0.10% 0.05% 0.05% 0.20% 0.25% 0.03% 0.30% 0.40% 2000 VDC, 1500 VAC 3500 VDC, 2500 VAC 0.05% 0.15% 11 9 10 ohms min. 10 ohms typ. NOTES: 1. Test method per MIL-STD-202 unless otherwise indicated 2. Typical defined as that percent change which will include a minimum of 50% of the measured changes in resistance from a variety of lots representing various unit sizes and ranges 3. Values shown are the maximum safe dielectric voltage applied from a V block or foil wrapping which extends the complete body length of the resistor under test 4. Percent change after the maximum safe dielectric voltage is applied for 1 minute TEMPERATURE RISE: 100 100 CGH 1/4 90 90 CGH 2-3 80 80 CGH 1/2 70 % Of Rated Power % Of Rated Power POWER DERATING: CGH 5 60 CGH 1 50 40 70 60 50 40 30 30 20 20 10 10 0 0 10 20 30 40 50 60 70 80 90 0 80 Temperature Rise (C) HOW TO ORDER: Sample Part No.: CGH 3 100 120 140 Ambient Temperature (C) - 50ppm/C - 2205 (22M) - 1% IRC Type CGH 1/4, CGH 1/2, CGH 1, CGH 2, CGH 3, CGH 5 Temperature Coefficient 100 ppm/C, 50 ppm/C Resistance Standard EIA/MIL values for metal film resistors. See specification chart on back inside cover for range. Tolerance 0.5%, 1%, 2%, 5% 2 WIREWOUND AND FILM TECHNOLOGIES DIVISION 736 Greenway Road * Boone, North Carolina 28607-1860 * Tel: 828-264-8861 * Fax: 828-264-8866 * www.irctt.com 160 180