BY448/BY458
Standard Avalanche Sinterglass Diode
Features
• Glass passivated junction
• Hermetically sealed package
• Lead (Pb)-free component
e2
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
Applications
High voltage rectification diode
949539
Efficiency diode in horizontal deflection circuits
Polarity: Color band denotes cathode end
Mounting Position: Any
Mechanical Data
Case: SOD-57 Sintered glass case
Weight: approx. 369 mg
Terminals: Plated axial leads, solderable per
MIL-STD-750, Method 2026
Parts Table
Part
Type differentiation
Package
BY448
BY458
VR = 1500 V; IFAV = 2 A
VR = 1200 V; IFAV = 2 A
SOD-57
SOD-57
Absolute Maximum Ratings
Tamb = 25 °C, unless otherwise specified
Parameter
Test condition
Part
Symbol
Value
Unit
V
Reverse voltage
see electrical characteristics
BY448
VR = VRRM
VR = VRRM
IFSM
1500
BY458
1200
V
A
Peak forward surge current
Average forward current
Junction temperature
tp = 10 ms, half sinewave
30
IFAV
2
140
A
Tj
°C
°C
mJ
Storage temperature range
Tstg
- 55 to + 175
10
Non repetitive reverse
avalanche energy
I(BR)R = 0.4 A
ER
Maximum Thermal Resistance
Tamb = 25 °C, unless otherwise specified
Parameter
Junction ambient
Test condition
Symbol
Value
Unit
l = 10 mm, TL = constant
RthJA
RthJA
45
K/W
K/W
on PC board with spacing
25 mm
100
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