BY448 , BY458 www.vishay.com Vishay Semiconductors Standard Avalanche Sinterglass Diode FEATURES * Glass passivated junction * Hermetically sealed package * Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 APPLICATIONS * High voltage rectification * Efficiency diode in horizontal deflection circuits 949539 DESIGN SUPPORT TOOLS click logo to get started Models Available MECHANICAL DATA Case: SOD-57 Terminals: plated axial leads, solderable per MIL-STD-750, method 2026 Polarity: color band denotes cathode end Mounting position: any Weight: approx. 369 mg ORDERING INFORMATION (Example) DEVICE NAME ORDERING CODE TAPED UNITS MINIMUM ORDER QUANTITY BY458 BY458TR 5000 per 10" tape and reel 25 000 BY458 BY458TAP 5000 per ammopack 25 000 PART TYPE DIFFERENTIATION PACKAGE BY448 VR = 1500 V, IFAV = 2 A SOD-57 BY458 VR = 1200 V, IFAV = 2 A SOD-57 PARTS TABLE ABSOLUTE MAXIMUM RATINGS (Tamb = 25 C, unless otherwise specified) PARAMETER Reverse voltage Peak forward surge current TEST CONDITION See electrical characteristics PART SYMBOL VALUE UNIT BY448 VR = VRRM 1500 V BY458 VR = VRRM 1200 V IFSM 30 A tp = 10 ms, half sine wave Average forward current Junction temperature Storage temperature range Non repetitive reverse avalanche energy l(BR)R = 0.4 A IFAV 2 A Tj 140 C Tstg -55 to +175 C ER 10 mJ UNIT MAXIMUM THERMAL RESISTANCE (Tamb = 25 C, unless otherwise specified) PARAMETER Junction ambient TEST CONDITION SYMBOL VALUE l = 10 mm, TL = constant RthJA 45 K/W On PC board with spacing 25 mm RthJA 100 K/W Rev. 1.8, 20-Feb-18 Document Number: 86006 1 For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 BY448 , BY458 www.vishay.com Vishay Semiconductors ELECTRICAL CHARACTERISTICS (Tamb = 25 C, unless otherwise specified) PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX UNIT IF = 3 A VF - - 1.6 V VR = VRRM IR - - 3 A VR = VRRM, Tj = 140 C IR - - 140 A IF = 0.5 A, IR = 1 A, iR = 0.25 A trr - - 2 s IF = 1 A, - dIF/dt = 0.05 A/s trr - - 20 s Forward voltage Reverse current Reverse recovery time Total reverse recovery time 2.5 120 l l IFAV - Average Forward Current (A) RthJA - Ther. Resist. Junction/Ambient (K/W) TYPICAL CHARACTERISTICS (Tamb = 25 C, unless otherwise specified) 100 80 TL = constant 60 40 20 VR = VRRM 2.0 l = 10 mm 1.5 1.0 PCB: d = 25 mm 0 0 5 10 15 20 25 0 30 16418 l - Lead Length (mm) 949101 Fig. 1 - Typ. Thermal Resistance vs. Lead Length 25 50 75 100 125 150 Tamb - Ambient Temperature (C) Fig. 3 - Max. Average Forward Current vs. Ambient Temperature 1000 100 VR = VRRM IR - Reverse Current (A) Tj = 150 C 10 IF - Forward Current (A) RthJA = 100 K/W 0.5 0 1 Tj = 25 C 0.1 0.01 100 10 0.001 1 0 16417 half sine wave RthJA = 45 K/W 0.5 1 1.5 2 2.5 3 3.5 4 4.5 VF - Forward Voltage (V) Fig. 2 - Forward Current vs. Forward Voltage 5 16419 25 50 75 100 125 150 Tj - Junction Temperature (C) Fig. 4 - Reverse Current vs. Junction Temperature Rev. 1.8, 20-Feb-18 Document Number: 86006 2 For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000 BY448 , BY458 Vishay Semiconductors 400 35 VR = VRRM f = 1 MHz 350 CD - Diode Capacitance (pF) PR - Reverse Power Dissipation (mW) www.vishay.com 300 PR - Limit at 100 % VR 250 200 PR - Limit at 80 % VR 150 100 50 0 30 25 20 15 10 5 0 25 50 75 100 125 150 0.1 16421 Tj - Junction Temperature (C) 16420 Fig. 5 - Max. Reverse Power Dissipation vs. Junction Temperature 1 10 100 VR - Reverse Voltage (V) Fig. 6 - Diode Capacitance vs. Reverse Voltage 3.6 (0.142) max. 0.82 (0.032) max. PACKAGE DIMENSIONS in millimeters (inches): SOD-57 26 (1.024) min. 4 (0.157) max. 26 (1.024) min. 20543 Rev. 1.8, 20-Feb-18 Document Number: 86006 3 For technical questions within your region: DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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