BY251 DAESAN | Alldatasheet

Document overview

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  • PDF pages: 2

Technical content

Features

  • Low cost
  • Diffused junction
  • High current capability
  • The plastic material carries U/L recognition 94V-0 Maximum Ratings And Electrical Characteristics
  • Case : JEDEC DO-201AD molded plastic body
  • Terminals : Plated axial lead solderable per MIL-STD-750, method 2026
  • Polarity : Color band denotes cathode end
  • Mounting Position : Any
  • Weight : 0.042 ounce, 1.1 grams (Ratings at 25¡É ambient temperature unless otherwise specified, Single phase, half wave 60Hz, resistive or inductive load. For capacitive load, derate by 20%) Notes: (1) Measured at 1MHz and applied reverse voltage of 4.0V DC. CURRENT 3.0 Amperes VOLTAGE 200 to 1300 Volts Maximum recurrent peak reverse voltage Volts Peak forward surge current 8.3ms half sine wave superimposed on rated load Maximum average forward rectified current at TA=50¡É Maximum instantaneous forward voltage at 3.0A VRRM 200 Volts Symbols BY251 Units 1.1VF 3.0 Amps100.0IFSM TJ TSTG -50 to +150 ¡É Maximum reverse current at rated DC blocking voltage Typical thermal resistance Typical junction capacitance (Note 1) Operating and storage temperature range BY252 BY253 BY254 10.0 30.0 400 600 800 ¥ìA ¡É/W pF I(AV) IR R¥èJA 30.0CJ Recurrent peak Forward Current Amps Amps 20.0IFRM BY255 1000 Dimensions in inches and (millimeters) DO-201AD 1.0(25.4) MIN. 1.0(25.4) MIN. 0.375(9.5) 0.285(7.2) 0.042(1.1) 0.037(0.9) DIA. 0.210(5.3) 0.188(4.8) DIA.

FIG.1-FORWARD CURRENT DERATING CURVE 1000 25 1751501257550 LEAD TEMPERATURE ( ¡É) AVERAGE FORWARD CURRENT AMPERES Ror L-Load C-Load 10mm10mm TJ=25¡É FIG.2-TYPICAL FORWARD CHARACTERISTICS INSTANTANEOUS FORWARD CURRENT(AMPERES) TJ=150¡É Typ.values 0.01 0.1 100 0.001 INSTANTANEOUS FORWARD VOLTAGE (VOLTS) FIG.3-MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT NUMBER OF CYCLES AT 50Hz Permissible surge current(A) 101 1002042 100 200 400 1000 TJ=25¡É IFM

1 Cycle

FIG.4-TYPICAL THERMAL RESISTANCE L, LEAD LENGTH (mm) R0JA THERMAL RESISTANCE JUNCTION AMBIENT(¡É/W) 250 5 30201510 Typ LL Max RATINGS AND CHARACTERISTIC CURVES BY251 THRU BY255