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NHL225 Datasheet(PDF) 3 Page - Vishay Siliconix |
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NHL225 Datasheet(HTML) 3 Page - Vishay Siliconix |
3 / 4 page HL, NHL www.vishay.com Vishay Dale Revision: 12-Mar-14 3 Document Number: 30208 For technical questions, contact: ww2dresistors@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 MOUNTING HARDWARE Mounting hardware is available for HL resistors, see HL Brackets and Sliders datasheet for more information: www.vishay.com/doc?30279 MATERIAL SPECIFICATIONS Element: Copper-nickel alloy of nickel-chrome alloy, depending on resistance value Core: Ceramic, steatite Coating: Special high temperature silicone Standard Terminals: Model “E” terminals are tinned steel Terminal Bands: Steel Part Marking: Vishay Dale, model, wattage, value, tolerance, date code NHL NON-INDUCTIVE Models of equivalent physical and electrical specifications are available with non-inductive (Ayrton-Perry) winding. They are identified by adding the letter N to the front of the HL type designation (NHL225 for example). For NHL models maximum resistance values are lower, see Standard Electrical Specifications table. DERATING TECHNICAL SPECIFICATIONS PARAMETER UNIT HL, NHL RESISTOR CHARACTERISTICS Temperature Coefficient ppm/°C ± 30 for 10 and above; ± 50 for 1 to 9.9 ; ± 90 for 0.1 to 0.99 Short Time Overload - 10 x rated power for 5 s Dielectric Withstanding Voltage VAC 1000, from terminal to mounting hardware Maximum Working Voltage V (P x R)1/2 Insulation Resistance 1000 M minimum dry, 100 M minimum after moisture test Operating Temperature Range °C - 55 to + 350 PERFORMANCE TEST CONDITIONS OF TEST TEST LIMITS Thermal Shock Rated power applied until thermally stable, then a minimum of 15 min at - 55 °C ± (2.0 % + 0.05 ) R Short Time Overload 10 x rated power for 5 s ± (2.0 % + 0.05 ) R Dielectric Withstanding Voltage 1000 VRMS for 1 min ± (0.1 % + 0.05 ) R Low Temperature Storage - 55 °C for 24 h ± (2.0 % + 0.05 ) R High Temperature Exposure 250 h at + 350 °C ± (2.0 % + 0.05 ) R Humidity 75 °C, 90 % to 100 % RH, 240 h ± (5.0 % + 0.05 ) R Load Life 1000 h at rated power, + 25 °C, 1.5 h “ON”, 0.5 h “OFF” ± (3.0 % + 0.05 ) R Moisture Resistance MIL-STD-202 Method 106, 7b not applicable ± (2.0 % + 0.05 ) R Shock, Specified Pulse MIL-STD-202 Method 213, 100 g’s for 6 ms, 10 shocks ± (0.2 % + 0.05 ) R Vibration, High Frequency Frequency varied 10 Hz to 2000 Hz, 20 g peak, 2 directions 6 h each ± (0.2 % + 0.05 ) R - 65 - 50 0 50 150 250 350 AMBIENT TEMPERATURE IN °C 120 100 80 60 40 20 0 25 |
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