DB-3 データシートの表示（PDF） - Daya Electric Group Co., Ltd.

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DB-3

SILICON BIDIRECTIONAL DIACS

Daya Electric Group Co., Ltd. 

DB-3, DB-4

SILICON BIDIRECTIONAL DIACS

The glass passivated, three-layer, two terminal, axial lead,

hermetically sealed diacs are designed specifically for

triggering thyristors. They demonstrate low breakover current

at breakover voltage as they withstand peak pulse current.

The breakover symmetry is within four volts with a typical

breakover voltage of DB-3 32 V, DB-4 40 V. These diacs are

intended for use in thyristor phase control, circuits for

lamp-dimming, universal-motor speed controls, and heat

controls.

Storage Temperature Range TS - 40 OC to +150 OC

Operating Temperature Range TJ - 40 OC to +100 OC

MAXIMUM RATINGS at 50 OC Ambient

Peak Current (10 µs duration, 120 cycle repetition rate)

Peak output voltage eP 3 ± Volts Max.1)

IP ± 2 A Max.

Max. 0.5

Max. 1.9

Min. 27.5

Black

Cathode Band

Black

Part No.

Black

XXX

Max. 3.9

Min. 27.5

Glass Case DO-35

Dimensions in mm

Characteristics at Ta = 25 OC

Parameter

Breakover Voltage

Breakover Currents

Breakover Voltage Symmetry

Dynamic Breakover Voltage

ΔI = [IBR to IF = 10 mA]

Thermal Impedance Junction to Ambient Air

DB-3

DB-4

Symbol

V(BR)1 and V(BR)2

I(BR)1 and I(BR)2

[V(BR)1]-[V(BR)2]

| ΔV ± |

RθJA

Min.

28

35

-

-

5

-

Max.

36

45

200

3.8

-

60

Unit

V

µA

V

V

OC/W

DIAC

60~

120 V

0.1 uF

20

ep

1)CIRCUIT FOR PEAK OUTPUT VOLTAGE TEST

load up to 1500 W

3.3 K

120 VAC

60 Hz

200 K

TRIAC

0.1 uF

100 V

BILATERAL

TRIGGER

DIAC

TYPICAL DIAC-TRIAC FULL-WAVE PHASE

CONTROL CIRCUIT

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