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| ERH, ENH Vishay Dale Wirewound Resistors, Military/Established Reliability MIL-PRF-39009 Qualified, Type RER, R Level FEATURES * Aluminum heat sink housing * Molded construction for total environmental protection * Qualified to MIL-PRF-39009 * Complete welded construction * Available in non-inductive styles (type ENH) with ArytonPerry winding for lowest reactive components * Mounts on chassis to utilize heat-sink effect STANDARD ELECTRICAL SPECIFICATIONS MODEL MIL-PRF-39009 TYPE MOUNTED ENH-5 ENH-10 ENH-25 ENH-50 ERH-5 ERH-10 ERH-25 ERH-50 RER40 RER45 RER50 RER55 RER60 RER65 RER70 RER75 5 10 20 30 5 10 20 30 FREE AIR 3 6 8 10 3 6 8 10 POWER RATING P25C W MILITARY RESISTANCE RANGE 1% WEIGHT (Typical) g 3.3 8.8 16.5 35 3 6 13 28 1 - 1.65k 1 - 2.8k 1 - 6.04k 1 - 4.99k 0.10 - 3.32k 0.10 - 5.62k 0.10 - 12.1k 0.10 - 39.2k TECHNICAL SPECIFICATIONS PARAMETER Temperature Coefficient Dielectric Withstanding Voltage Short Time Overload Maximum Working Voltage Insulation Resistance Terminal Strength Solderability Operating Temperature Range UNIT ppm/C VAC V lb C ERH, ENH RESISTOR CHARACTERISTICS 100 for 0.1 to 0.99, 50 for 1 to 19.9, 20 for 20 and above 1000 for ERH-5 ERH-10 and ERH-25, 2000 for ERH-50 5 x rated power for 5 seconds (P x R)1/2 10,000 Megohm minimum dry, 1000 Megohm minimum after moisture test 5 pull for ERH-5 and ERH-10, 10 pull for ERH-25 and ERH-50 Meets requirements of ANSI J-STD-002 - 55/+ 250 ORDERING INFORMATION RER50 MILITARY TYPE F TOLERANCE 49R9 RESISTANCE R FAILURE RATE www.vishay.com 128 For technical questions, contact ww2bresistors@vishay.com Document Number 30200 Revision 18-Oct-00 ERH, ENH Wirewound Resistors, Military/Established, Reliability DIMENSIONS D C A F M N E H J P K L G Vishay Dale B MODEL ERH-5 ENH-5 ERH-10 ENH-10 ERH-25 ENH-25 ERH-50 ENH-50 A 0.444 0.005 [11.280 0.127] 0.562 0.005 [14.270 0.127] 0.719 0.005 [18.260 0.127] 1.562 0.005 [39.670 0.127] B 0.490 0.005 [12.450 0.127] 0.625 0.005 [15.880 0.127] 0.781 0.005 [19.840 0.127] 0.844 0.005 [21.440 0.127] C 0.600 0.031 [15.240 0.787] 0.750 0.031 [19.050 0.787] 1.062 0.031 [26.970 0.787] 1.968 0.031 [49.990 0.787] D 1.125 0.062 [28.580 1.570] 1.375 0.062 [34.930 1.570] 1.938 0.062 [49.230 1.570] 2.781 0.062 [70.640 1.570] E 0.334 0.015 [8.480 0.381] 0.420 0.015 [10.670 0.381] 0.550 0.015 [13.970 0.381] 0.630 0.015 [16.000 0.381] DIMENSIONS in inches [millimeters] F 0.646 0.015 [16.410 0.381] 0.800 0.015 [20.320 0.381] 1.080 0.015 [27.430 0.381] 1.140 0.015 [28.960 0.381] G 0.320 0.015 [8.130 0.381] 0.390 0.015 [9.910 0.381] 0.546 0.015 [13.870 0.381] 0.610 0.015 [15.490 0.381] H 0.065 0.010 [1.650 0.254] 0.075 0.010 [1.900 0.254] 0.075 0.010 [1.900 0.254] 0.088 0.010 [2.240 0.254] 120 100 80 60 40 20 0 -55 -50 0 25 50 150 250 J 0.133 0.010 [3.380 0.254] 0.165 0.010 [4.190 0.254] 0.231 0.010 [5.870 0.254] 0.260 0.010 [6.600 0.254] K 0.078 0.010 [1.980 0.254] 0.093 0.010 [2.360 0.254] 0.172 0.010 [4.370 0.254] 0.196 0.010 [4.980 0.254] L 0.093 0.005 [2.360 0.127] 0.094 0.005 [2.390 0.127] 0.125 0.005 [3.180 0.127] 0.125 0.005 [3.180 0.127] M 0.078 0.015 [1.980 0.381] 0.102 0.015 [2.590 0.381] 0.115 0.015 [2.920 0.381] 0.107 0.015 [2.720 0.381] N 0.050 0.005 [1.270 0.127] 0.085 0.005 [2.160 0.127] 0.085 0.005 [2.160 0.127] 0.085 0.005 [2.160 0.127] P 0.266 0.062 [6.760 1.570] 0.312 0.062 [7.920 1.570] 0.438 0.062 [11.130 1.570] 0.438 0.062 [11.130 1.570] MATERIAL SPECIFICATIONS Element: Copper-nickel alloy or nickel-chrome alloy, depending on resistance value Core: Ceramic, steatite or alumina, depending on physical size Encapsulant: Silicone molded construction Housing: Aluminum with hard anodic coating End Caps: Stainless steel Standard Terminals: Tinned Copperweld(R) Part Marking: Source Code, JAN, Military PIN, Date/Lot Code APPLICABLE MIL SPECIFICATION MIL-PRF-39009: This is the military specification covering housed chassis mount established reliability power wirewound resistors. Vishay ERH and ENH resistors are listed as qualified on the MIL-PRF-39009 QPL. Derating POWER RATING AMBIENT TEMPERATURE IN C Vishay ERH and ENH resistor wattage ratings are based on mounting to the proper heat sink. ERH-5 and ERH-10: 4" x 6" x 2" x 0.040" thick aluminum chassis ERH-25 and ERH-50: 5" x7" x 2" x 0.040" thick aluminum chassis PERFORMANCE TEST Low Temperature Operation Short Time Overload Dielectric Withstanding Voltage Low Temperature Storage High Temperature Exposure Moisture Resistance Shock, Specified Pulse Vibration, High Frequency Load Life Extended Life Terminal Strength CONDITIONS OF TEST Apply rated power until thermal stability, remove power subject to air temperature of - 55C for 15 to 30 minutes 5 x rated power for 5 seconds 1000Vrms (RER 40, 45, 50, 60, 65, 70), 2000Vrms (RER55 and 75), one minute duration - 55C for 24 hours 250C for 2000 hours MIL-STD-202 Method 106 MIL-STD-202 Method 213, Condition 1 MIL-STD-202, Method 204, Condition D 2000 hours at rated power, + 25C, 1.5 hours "ON", 0.5 hours "OFF" 10,000 hours at rated power, + 25C, 1.5 hours "ON", 0.5 hours "OFF" MIL-STD-202, Method 211, Condition A 5 pound (RER40, 45, 60, 65), 10 pound (RER50, 55, 70, 75) For technical questions, contact ww2bresistors@vishay.com TEST LIMITS (0.5% + 0.01) R (0.3% + 0.01) R (0.2% + 0.01) R (0.3% + 0.01) R (1.0% + 0.01) R (0.5% + 0.01) R (0.2% + 0.01) R (0.2% + 0.01) R (1.0% + 0.01) R (2.0% + 0.01) R (0.2% + 0.01) R Document Number 30200 Revision 18-Oct-00 www.vishay.com 129 |
Price & Availability of ENH
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