BY458 datasheet(2/5 Pages) VISHAY

部件名	BY458

功能描述	Standard Avalanche Sinterglass Diode

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制造商	VISHAY [Vishay Siliconix]

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Document Number 86006

Rev. 1.6, 14-Apr-05

BY448 / BY458

Vishay Semiconductors

Electrical Characteristics

Tamb = 25 °C, unless otherwise specified

Typical Characteristics (Tamb = 25

°C unless otherwise specified)

Parameter

Test condition

Symbol

Min

Typ.

Max

Unit

Forward voltage

IF = 3 A

VF

1.6

V

Reverse current

VR = VRRM

IR

3

µA

VR = VRRM, Tj = 140 °C

IR

140

µA

Total reverse recovery time

IF = 1 A, - diF/dt = 0.05 A/µstrr

20

µs

Reverse recovery time

IF = 0.5 A, IR = 1 A, iR = 0,25 A

trr

2

µs

Figure 1. Typ. Thermal Resistance vs. Lead Length

Figure 2. Forward Current vs. Forward Voltage

94 9101

ll

TL= constant

0

20

40

60

80

120

l - Lead Length ( mm )

510

15

25

30

20

100

0.001

0.01

0.1

1

10

100

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

VF - Forward V oltage(V)

16417

Tj =25

°C

Tj = 150

° C

Figure 3. Max. Average Forward Current vs. Ambient Temperature

Figure 4. Reverse Current vs. Junction Temperature

0

0.5

1.0

1.5

2.0

2.5

16418

RthJA= 45 K/W

l=10mm

RthJA= 100 K/W

PCB:d=25mm

VR =VRRM

half sinewave

075

50

25

125

100

150

Tamb - Ambient Temperature (

°C)

1

10

100

1000

25

50

75

100

125

150

Tj - Junction T emperature (

°C)

16419

VR =VRRM

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