6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVER OUTPUT
(250/400 VOLT PEAK)
MOC3010M
MOC3011M
MOC3012M
MOC3020M
MOC3021M
MOC3022M MOC3023M
400V (MOC302X)
250V (MOC301X)
Vdc
R
TEST
R = 10 kΩ
C
TEST
PULSE
INPUT
MERCURY
WETTED
RELAY
D.U.T.
X100
SCOPE
PROBE
1. The mercury wetted relay provides a high speed repeated
pulse to the D.U.T.
2. 100x scope probes are used, to allow high speeds and
voltages.
3. 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 R
TEST
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.
τ
RC
is measured at this point and
recorded.
APPLIED VOLTAGE
WAVEFORM
Vmax = 400 V (MOC302X)
= 250 V (MOC301X)
252 V (MOC302X)
158 V (MOC301X)
dv/dt =
τ
RC
0.63 Vmax
τ
RC
0 VOLTS
252
=
τ
(MOC302X)
RC
158
=
τ
(MOC301X)
RC
Figure 5. Static dv/dt Test Circuit
NOTE: This optoisolator should not be used to drive a load directly.
It is intended to be a trigger device only.
R
L
R
in
V
CC
2
MOC3010M
MOC3011M
MOC3012M
5
1
6
180
120 V
60 Hz
3
4
Figure 6. Resistive Load
Z
L
R
in
V
CC
2
MOC3010M
MOC3011M
MOC3012M
5
0.1
µF
C1
1
6
180
2.4k
120 V
60 Hz
3
4
Figure 7. Inductive Load with Sensitive Gate Triac (I
GT
≤
15 mA)
www.fairchildsemi.com
4 OF 8
10/31/01 DS300255
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
