5/29/03

Page 6 of 10

© 2003 Fairchild Semiconductor Corporation

6-PIN DIP ZERO-CROSS

PHOTOTRIAC DRIVER OPTOCOUPLER

(600V PEAK)

MOC3061-M

MOC3062-M

MOC3063-M

MOC3162-M

MOC3163-M

1. 100x scope probes are used, to allow high speeds and voltages.

2. The worst-case condition for static dv/dt is established by triggering the D.U.T. with a normal LED input current, then removing

the current. The variable vernier resistor combined with various capacitor combinations allows the dv/dt to be gradually

increased until the D.U.T. continues to trigger in response to the applied voltage pulse, even after the LED current has been

removed. The dv/dt is then decreased until the D.U.T. stops triggering.

BASIC APPLICATIONS

Typical circuit for use when hot line switching is required. In this

circuit the "hot" side of the line is switched and the load connected

to the cold or neutral side. The load may be connected to either the

neutral or hot line.

mA for the MOC3061-M, 10 mA for the MOC3062-M, or 5 mA for

the MOC3063-M. The 39 ohm resistor and 0.01 µF capacitor are

for snubbing of the triac and is often, but not always,

necessary depending upon the particular triac and load

used.

Suggested method of firing two, back-to-back SCR’s

with a Fairchild triac driver. Diodes can be 1N4001;

resistors, R1 and R2, are optional 330 ohm.

Note: This optoisolator should not be used to drive a

load directly. It is intended to be a trigger device only.

27

2W

2W

100

2W

dV

dt

VERNIER

MOUNT DUT ON

TEMPERATURE CONTROLLED

C

µ PLATE

DIFFERENTIAL

PREAMP

f = 10 Hz

PW = 100

µs

50

Ω PULSE

GENERATOR

ALL COMPONENTS ARE NON-INDUCTIVE UNLESS SHOWN

82

2W

470pF

0.001

0.005

0.01

0.047

0.47

0.1

56

2W

1N914

20V

1000

1/4W

1N967A

18V

RFP4N100

DUT

20k

X100 PROBE

X100 PROBE

6

4

1

2

1000

10 WATT

WIREWOUND

0.33

1000V

POWER

1 MEG

2W EACH

1.2 MEG

2W

TEST

0-1000V

10mA

0.047

1000V

Figure 9. Circuit for Static

dV

Measurement of Power Thyristors

dt

Figure 10. Hot-Line Switching Application Circuit

0.01

µF

1

2

3

6

5

4

240 VAC

HOT

NEUTRAL

360

Ω

360

MOC3061-M

MOC3062-M

MOC3063-M

39

Ω

FKPF12N60

LOAD

Figure 11. Inverse-Parallel SCR Driver Circuit

1

2

3

6

5

4

115 VAC

SCR

360

Ω

R1

D1

SCR

MOC3061-M

MOC3062-M

MOC3063-M

R2

D2

LOAD