AP851 50 Watts TO-220 High Power Resistors A high power TO-220 style resistor package designed for high frequency emitter circuits in switching power supplies. Also used in voltage regulation and low energy pulse loading. • 50 Watts at 25˚C case temperature on heat sink • Single screw mounting to heat sink • Moulded case for proctection and easy to mount • Non-inductive design • Electrically isolated case • RoHS Compliant Characteristics Power rating: 2.25 Watts in free air Operating voltage: 420V max Dielectric strength: 1800Vac Insulation resistance: 10GΩ min Temperature coefficient: As specified, referenced to 25˚C, ∆R taken at +105˚C Short time overload: ∆R ±0.3%, 2 times rated power with applied voltage not to exceed 1.5 times maximum continuous operating voltage for 5 seconds Load life: ∆R ±1.0%, 2000 hours at rated power Damp heat with load: ∆R ±0.5%, 40 ±2˚C, 90 - 95% R.H max working voltage for 1000 hours with 1.5 hours “ON” and 0.5 hours “OFF” Solderability: 90% min coverage, 245 ±5˚C for 3 seconds Thermal shock: ∆R ±0.3%, -65˚C - 150˚C, 100 cycles Terminal strength: ∆R ±0.2%, 2.4 N Vibration and high frequency: ∆R ±0.2%, 20g peak Electrical Specifications Resistance Value Range Available Tolerance & Pref. Available TCR Value Ranges R1 - 1R J (±5%) K (±10%) 3R01 - 10R 10R2 - 10K F (±1%) , J (±5%) , K (±10%) D (±0.5%) F (±1%) J (±5%) K (±10%) 100 Not specified ±300ppm/˚C Power Rated % 1R02 - 3R Derating Curve ±100ppm/˚C (std.) ±200ppm/˚C ±50ppm/˚C ±100ppm/˚C (std.) ±200ppm/˚C 80 60 40 20 0 0 25 50 Preferred value ranges: F (±1%) - E96 , J (±5%) - E24, K (±10%) - E12 100 125 Case Temperature (°C) For more information and ordering, please consult www.arcolresistors.com Page 1 of 2 75 2/13.18 150 175 AP851 50 Watts TO-220 High Power Resistors Standard part numbers 0.40 0.42" (10.15 -10.67mm) 10.15 10.67 AP8511RF AP8511RJ AP8512RJ AP8513R3J AP8513R9J 0.63 0.65" (16.00- 16.52 16.52mm) 16.00 0.115 0.135" (2.92 3.44mm) 2.92 - 3.44 Dimensions (mm) 0.115 0.135" (2.92 -3.44mm) 2.92 3.44 AP851330RJ AP851470RJ AP8511KJ AP85110KJ AP851100RFN Series 0.045 0.055" (1.14 1.141.40mm) - 1.40 Resistance Tolerance F = 1% J = 5% K = 10% TCR N = 50ppm L = 200ppm Blank = standard 0.016 0.024" (0.40 -0.60mm) 0.40 0.60 0.06 0.08" (1.52 - 2.04mm) 1.52 2.04 0.45 0.55" (11.43 13.97mm) 11.43 - 13.97 0.10 0.16" (2.54 2.544.06mm) - 4.06 0.19 0.21" 0.026 0.034" (0.66 0.660.86mm) - 0.86 AP85125RJ AP85147RJ AP851100RF AP851100RJ AP851220RJ Ordering Information 0.121 0.129" (3.08 3.083.28mm) - 3.28 (4.82 5.34mm) 4.82 - 5.34 AP8514R7J AP85110RF AP85110RJ AP85115RJ AP85125RF ARCOL UK Limited, The information contained herein does not form part of a Threemilestone Ind. Estate, contract and is subject to change without notice. ARCOL Truro, Cornwall, TR4 9LG, UK. operate a policy of continual product development, therefore, T +44 (0) 1872 277431 specifications may change. F +44 (0) 1872 222002 E [email protected] www.arcolresistors.com It is the responsibility of the customer to ensure that the component selected from our range is suitable for the intended application. If in doubt please ask ARCOL. Page 2 of 2 2/13.18