AP851 1R J

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 ±200ppm/˚C ±50ppm/˚C ±100ppm/˚C ±200ppm/˚C 80 60 40 20 0 0 25 50 Preferred value ranges: F (±1%) - E96 , J (±5%) - E24, K (±10%) - E12 75 100 125 150 175 Case Temperature (°C) 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 sales@arcolresistors.com 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 1 of 2 3/14.35 AP851 50 Watts TO-220 High Power Resistors 0.40 0.42" (10.15 -10.67mm) 10.15 10.67 Ordering Procedure Standard Resistor: Series, Resistance Value, Tolerance Code, 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) TCR eg: AP851 10K J ± 50ppm/°C 0.115 0.135" (2.92 -3.44mm) 2.92 3.44 0.121 0.129" (3.08 3.083.28mm) - 3.28 0.045 0.055" (1.14 1.141.40mm) - 1.40 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 0.026 0.034" (0.66 0.660.86mm) - 0.86 0.10 0.16" (2.54 2.544.06mm) - 4.06 0.19 0.21" (4.82 5.34mm) 4.82 - 5.34 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 sales@arcolresistors.com 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 3/14.35