BY251 THRU BY255 Ｒ GENERAL PURPOSE PLASTIC RECTIFIER FEATURES SILICON RECTIFIER Reverse Voltage - 200 to 1300 Volts Forward Current -3.0Amperes S E M I C O N D U C T O R DO-201AD JF Low cost Diffused junction High current capability The plastic material carries U/L recognition 94V-0 １．０（２５．４） ＭＩＮ ０．２１０（５．３） ０．１９０（４．８） ＤＩＡ MECHANICAL DATA ０．３７５（９．５０） ０．２８５（７．２０） 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 ０．０５２（１．３２） Weight: 0.042ounce, 1.1 grams ０．０４８（１．２２） ＤＩＡ １．０（２５．４） ＭＩＮ Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS (Ratings at 25 C ambient temperature unless otherwise specified ,Single phase ,half wave 60Hz,,resistive or inductive load. For capacitive load, derate by 20%.) Symols BY 251 BY 252 BY 253 BY 254 BY 255 Units Maximum Recurrent Peak Reverse Voltage VRRM 200 400 600 800 1000 Volts Maximum average Forward Rectified Current at TA=50 C I(AV) 3.0 Amps Recurrent peak Forward Current IFRM 20.0 Amps Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load IFSM Amps 100.0 Maximum Instantaneous Forward Voltage at 3.0 A VF 1.1 Volts Maximum Reverse current at rated DC Blocking Voltage IR 10.0 A R JA CJ 30.0 C/W 30.0 PF -50 to+150 C Typical Thermal Resistance Typical Junction Capacitance (Note 1) Operating and Storage temperature Range TJ TSTG Note: 1.Measured at 1MHz and applied reverse voltage of 4.0V 7-44 JINAN JINGHENG CO., LTD. NO.51 HEPING ROAD PR CHINA TEL:86-531-6943657 FAX:86-531-6947096 WWW.JIFUSEMICON.COM FIG.1-FORWARD CURRENT DERATING CURVE FIG.2-TYPICAL FORWARD CHARACTERISTICS １００ ４ 10mm 10mm １０ INSTANTANEOUS FORWARD CURRENT( AMPERES) AVERAGE FORWARD CURRENT AMPERES SILICON RECTIFIER RATINGS AND CHARACTERISTIC CURVES BY251 THRU BY255 ３ Ror L-Load ２ C-Load １ TJ=150 C １ TJ=25 C ０．１ Typ.values ０．０１ ０ ０．００１ ０ ２５ ５０ ７５ １００ １２５ １５０ １７５ LEAD TEMPERATURE ( C) ０．２ ０．４ ０．６ ０．８ １．０ １．２ １．４ １．６ INSTANTANEOUS FORWARD VOLTAGE (VOLTS) FIG.3-MAXIMUM NON-REPBTITIVE FORWARD SURGE CURRENT FIG.4-TYPICAL THERMAL RESISTANCE １０００ THERMAL RESISTANCE JUNCTION AMBIENT( C/W) ５０ IFM ４００ Permissible surge current(A) 1 Cycle ２００ TJ=25 C １００ Max ３０ ２０ Typ １０ R JA ４０ ４０ ２０ １ ２ ４ １０ ２０ L L ２０ ２５ １００ Number of cycles at 50Hz ０ ０ ５ １０ １５ ３０ LEAD LENGTH (mm) 7-45 JINAN JINGHENG CO., LTD. NO.51 HEPING ROAD PR CHINA TEL:86-531-6943657 FAX:86-531-6947096 WWW.JIFUSEMICON.COM