Document Number: 86034

For technical questions within your region, please contact one of the following:

www.vishay.com

Rev. 1.8, 30-Jul-10

1

Fast Avalanche Sinterglass Diode

BYT77, BYT78

Vishay Semiconductors

MECHANICAL DATA

Case: SOD-64

Terminals: plated axial leads, solderable per MIL-STD-750,

method 2026

Polarity: color band denotes cathode end

Mounting position: any

Weight: approx. 858 mg

FEATURES

• Glass passivated junction

• Hermetically sealed package

• Low reverse current

• Soft recovery characteristics

• Controlled avalanche characteristics

• 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

• Fast “soft recovery” rectification diode

949588

PARTS TABLE

PART

TYPE DIFFERENTIATION

PACKAGE

BYT77

SOD-64

BYT78

SOD-64

PARAMETER

TEST CONDITION

PART

SYMBOL

VALUE

UNIT

Reverse voltage = repetitive peak

reverse voltage

See electrical characteristics

BYT77

800

V

BYT78

1000

V

Peak forward surge current

100

A

Average forward current

≤ 45 °C

3A

Non repetitive reverse avalanche

energy

10

mJ

Junction and storage temperature

range

- 55 to + 175

°C

PARAMETER

TEST CONDITION

SYMBOL

VALUE

UNIT

Junction ambient

25

K/W

On PC board with spacing 25 mm

70

K/W

PARAMETER

TEST CONDITION

PART

SYMBOL

MIN.

TYP.

MAX.

UNIT

Forward voltage

-1

1.2

V

Reverse current

-1

5

μA

-

60

150

μA

Reverse recovery time

-

-

250

ns