BY448 , BY458 Vishay Semiconductors Standard Avalanche Sinterglass Diode FEATURES • Glass passivated junction • Hermetically sealed package • Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC • Halogen-free according to IEC 61249-2-21 definition APPLICATIONS 949539 • High voltage rectification MECHANICAL DATA • Efficiency diode in horizontal deflection circuits 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 PARTS TABLE PART TYPE DIFFERENTIATION PACKAGE BY448 VR = 1500 V; IFAV = 2 A SOD-57 BY458 VR = 1200 V; IFAV = 2 A SOD-57 ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified) PARAMETER TEST CONDITION Reverse voltage See electrical characteristics Peak forward surge current PART SYMBOL VALUE UNIT BY448 VR = VRRM 1500 V BY458 VR = VRRM 1200 V IFSM 30 A IFAV 2 A °C 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 Tj 140 Tstg - 55 to + 175 °C ER 10 mJ MAXIMUM THERMAL RESISTANCE (Tamb = 25 °C, unless otherwise specified) PARAMETER Junction ambient TEST CONDITION SYMBOL VALUE UNIT l = 10 mm, TL = constant RthJA 45 K/W On PC board with spacing 25 mm RthJA 100 K/W ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) PARAMETER Forward voltage Reverse current Total reverse recovery time Reverse recovery time Document Number: 86006 Rev. 1.7, 09-Aug-10 TEST CONDITION SYMBOL MIN. TYP. MAX IF = 3 A VF - - 1.6 UNIT V VR = VRRM IR - - 3 μA μA VR = VRRM, Tj = 140 °C IR - - 140 IF = 1 A, - dIF/dt = 0.05 A/μs trr - - 20 μs IF = 0.5 A, IR = 1 A, iR = 0.25 A trr - - 2 μs For technical questions within your region, please contact one of the following: [email protected], [email protected], [email protected] www.vishay.com 147 BY448 , BY458 Standard Avalanche Sinterglass Diode Vishay Semiconductors TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified) RthJA - Ther. Resist. Junction/Ambient (K/W) 120 1000 l l VR = VRRM IR - Reverse Current (μA) 100 80 TL = constant 60 40 20 100 10 1 0 0 5 10 15 20 25 30 25 16419 50 75 100 125 150 l - Lead Length (mm) Tj - Junction Temperature (°C) Fig. 1 - Typ. Thermal Resistance vs. Lead Length Fig. 4 - Reverse Current vs. Junction Temperature 949101 Tj = 150 °C 10 IF - Forward Current (A) PR - Reverse Power Dissipation (mW) 100 1 Tj = 25 °C 0.1 0.01 0.001 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 VR = VRRM 350 300 200 PR - Limit at 80 % VR 150 100 50 0 25 50 75 100 125 150 Tj - Junction Temperature (°C) 16420 Fig. 2 - Forward Current vs. Forward Voltage Fig. 5 - Max. Reverse Power Dissipation vs. Junction Temperature 2.5 35 VR = VRRM f = 1 MHz half sine wave RthJA = 45 K/W 2.0 l = 10 mm 1.5 1.0 RthJA = 100 K/W 0.5 30 CD - Diode Capacitance (pF) IFAV - Average Forward Current (A) PR - Limit at 100 % VR 250 5 VF - Forward Voltage (V) 16417 400 PCB: d = 25 mm 25 20 15 10 5 0 0 0 16418 25 50 75 100 125 150 Tamb - Ambient Temperature (°C) Fig. 3 - Max. Average Forward Current vs. Ambient Temperature www.vishay.com 148 0.1 16421 1 10 100 VR - Reverse Voltage (V) Fig. 6 - Diode Capacitance vs. Reverse Voltage For technical questions within your region, please contact one of the following: [email protected], [email protected], [email protected] Document Number: 86006 Rev. 1.7, 09-Aug-10 BY448 , BY458 Standard Avalanche Sinterglass Diode Vishay Semiconductors 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 Document Number: 86006 Rev. 1.7, 09-Aug-10 For technical questions within your region, please contact one of the following: [email protected], [email protected], [email protected] www.vishay.com 149 Legal Disclaimer Notice Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. 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No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 11-Mar-11 www.vishay.com 1