BY254

Ｒ B Y251 THRU BY255 GENERAL PURPOSE PLASTIC RECTIFIER Reverse Voltage - 200 to 1300 Volts Forward Current -3.0Amperes S ILICON RECTIFIER WWW.JIFUSEMICON.COM SEMICONDUCTOR FEATURES Low cost Diffused junction High current capability The plastic material carries U/L recognition 94V-0 JF DO-201AD １．０（２５．４） ＭＩＮ ０．２１０（５．３） ０．１９０（４．８） ＤＩＡ MECHANICAL DATA 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: 0.042ounce, 1.1 grams ０．０５２（１．３２） ０．０４８（１．２２） ＤＩＡ ０．３７５（９．５０） ０．２８５（７．２０） 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 Maximum Recurrent Peak Reverse Voltage Maximum average Forward Rectified Current at TA=50 C Recurrent peak Forward Current Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load Maximum Instantaneous Forward Voltage at 3.0 A Maximum Reverse current at rated DC Blocking Voltage Typical Thermal Resistance Typical Junction Capacitance (Note 1) Operating and Storage temperature Range BY 251 200 BY 252 400 BY 253 600 3.0 20.0 BY 254 800 BY 255 1000 Units VRRM I(AV) IFRM IFSM VF IR R JA CJ TJ TSTG Volts Amps Amps Amps Volts A C/W PF C 100.0 1.1 10.0 30.0 30.0 -50 to+150 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 R ATINGS AND CHARACTERISTIC CURVES BY251 THRU BY255 FIG.1-FORWARD CURRENT DERATING CURVE ４ 10mm 10mm FIG.2-TYPICAL FORWARD CHARACTERISTICS 　１００ AVERAGE FORWARD CURRENT AMPERES 　１０ ３ INSTANTANEOUS FORWARD CURRENT( AMPERES) TJ=150 C Ror L-Load １ ２ C-Load TJ=25 C ０．１ 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 V OLTAGE (VOL TS) FIG.3-MAXIMUM NON-REPBTITIVE FORWARD SURGE CURRENT 　１０００ FIG.4-TYPICAL THERMAL RESISTANCE ５０ IFM 　４００ 1 Cycle THERMAL RESISTANCE JUNCTION AMBIENT( C/W) ４０ Permissible surge current(A) Max 　２００ TJ=25 C ３０ 　１００ ２０ Typ 　４０ JA １０ R 　２０ １ ２ ４ １０ ２０ １００ ０ ０ ５ １０ １５ L L Number of cycles at 50Hz ２０ ２５ 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 S ILICON RECTIFIER