REV 2001

C3CC03

BI-DIRECTIONAL DIAC

DB3 & DB4 Series

Parameters

Symbol

*(DMM)DB3 *(DMM)DB4

Units

28

35

V min

Breakover Voltage

V(BR)1, V(BR)2

32

40

V typ

36

45

V max

Breakover Voltage Symmetry

|V(BR)1|-|V(BR)2|

3

3

V max

Dynamic Breakback Voltage

I±V DI

5

5

V max

Breakover Current

I(BR)1 AND I(BR)2

50

50

mA max

Peak Pulse Current for

IP

2.0

2.0

A max

10ms, 120pps, TA£4°C

* DMMDB3 & DMMDB4 are DL-35 (mini-MELF).

DB3 & DB4 are DO-35.

DIMENSIONS

PART NUMBER EXAMPLE

CURVES

SPECIFICATIONS

DMM DB3 R

Packaging

R - Tape & Reel

A - Tape & Ammo

B - Bulk Packaging

Series

DM3 for 32 volts.

DM4 for 40 volts.

Surface mount.

Omit for thru hole.

Normalized VBO Change

vs Junction Temperature

+8

+6

+4

+2

0

-2

-4

-6

-8

-40

-20 0

+20 +40 +60 +80 +100 +120 +140

D28 32 35 40 50

D60

Test Circuit Waveforms

+V(80)

0

-V(80)

V+

t

V-

t

+IP

0

-IP

Repetitive Peak On-State

Current vs Pulse Duration

1.0

0.1

0.01

0.001

10

100

1000

10000

D60

Safe Operating Area

Pulse repetition rate = 120PPS

Tz= 40°C

D28 32 35 40 50

V-I Characteristics

CURRENT

VOLTAGE

Breakover

Voltage

Breakover

Current

-Vbo

+Vbo

Ibo

RF

200W

1%

VC

120V

RMS

60Hz

0.1mF

D.U.T.

Adjust for one firing in half cycle

Test Circuit

MINI-MELF Drawing (mm)

Cathode Mark

1.35±0.05

0.3±0.1

3.3±0.1

0.3±0.1

DO-35 Glass Case Outline Drawing (mm)

Cathode

2.0 Max

4.2 Max

A

A

f0.52

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