1 iso-9001 registered thick film high voltage/high reliability mil-approved metal glaze? resistors cmh series 1/4 watt to 5 watt 330k ohm to 1g ohm range 1%, 2%, or 5% tolerance tcr of 100 ppm/c qualified to mil-r-49462 diamond spiraled thick film element heat conducting ceramic substrate epoxy coated body all welded cap and lead construction high conductivity plated on nickel termination tin lead electroplated leads specifications: power rating@ 70c (watts) 1 1/4 1/2 1 2 3 5 irc type cmh-1/4 cmh-1/2 cmh-1 cmh-2 cmh-3 cmh-5 voltage rating (volts) 2 750 1,500 3,000 5,000 10,000 20,000 resistance range (ohms) 4 330k-100m 330k-392m 330k-499m 330k-499m 330k-1000m 330k-1000m tolerance ( %) 1, 2, 5 1, 2, 5 1, 2, 5 1, 2, 5 1, 2, 5 1, 2, 5 maximum tcr ( ppm/c) 4 100 100 100 100 100 100 vcr (ppm/v) 0 to -5 0 to -5 0 to -5 0 to -5 0 to -5 0 to -5 mil type 3 rhv30 rhv31 rhv32 rhv33 rhv34 rhv35 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. 3. marked per mil-r-49462 4. values greater than 100 meg and less than 500 meg, 200ppm; values greater than or equal to 500 meg, 500ppm. dimensions (inches and (mm)) : 0.032 (0.81) dia.* 1.50 0.125 (38.1 3.2) * cmh 1/4 leads are 0.025 (0.64) in diameter irc type cmh-1/4 cmh-1/2 cmh-1 cmh-2 cmh-3 cmh-5 body length - bl 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) body diameter - bd 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) clean lead to clean lead - cl 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
2 iso-9001 registered cmh environmental performance: test condition* thermal shock solder effect terminal strength moisture resistance load life (1000 hours at 25c) shelf life (1 year at 25c) low-temperature operation shock vibration dielectric strength insulation resistance at 500 vdc notes: * test per mil-r-49462 and mil std-202. maximum d d d d d r ( 3 s s s s s ) 0.25% 0.15% 0.20% 0.50% 1.00% 0.10% 0.15% 0.35% 0.35% 0.15% 10 9 w min typical d d d d d r 0.10% 0.05% 0.10% 0.20% 0.25% 0.03% 0.05% 0.10% 0.10% 0.05% 5x10 12 w typ temperature rise: 80 100 120 140 160 180 0 10 20 30 40 50 60 70 80 90 100 power derating: 0 102030405060708090 0 10 20 30 40 50 60 70 80 90 100 % of rated power % of rated power temperature rise (c) ambient temperature (c) how to order: sample part no.: cmh 3 - 100ppm/c - 2205 (22m) - 1% irc type cmh 1/4, cmh 1/2, cmh 1, cmh 2, cmh 3, cmh 5 temperature coefficient 100 ppm/c resistance standard mil values for metal film resistors. see specification chart on back inside cover for range. tolerance 1%, 2%, 5% cmh 1/2 cmh 1 cmh 1/4 cmh 2-3 cmh 5 wirewound and film technologies division 736 greenway road boone, north carolina 28607-1860 tel: 828-264-8861 fax: 828-264-8866 www.irctt.com
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