Data Sheet

©2005 Fairchild Semiconductor Corporation www.fairchildsemi.com
MOC301XM, MOC302XM Rev. 1.5 6
MOC301XM, MOC302XM — 6-Pin DIP Random-Phase Triac Driver Output Optocoupler (250/400 Volt Peak)
Note:
This optoisolator should not be used to drive a load directly. It is intended to be a trigger device only.
Figure 9. Static dv/dt Test Circuit
Figure 10. Resistive Load
Figure 11. Inductive Load with Sensitive Gate Triac (I
GT
≤ 15 mA)
Vdc
400 V (MOC302X)
250 V (MOC301X)
R = 10 kΩ
C
TEST
X100
SCOPE
PROBE
PULSE
INPUT
MERCURY
WETTED
RELAY
R
TEST
DUT
252 V (MOC302X)
158 V (MOC301X)
0 VOLTS
APPLIED VOLTAGE
WAVEFORM
V
max
=
dv/dt =
0.63 V
max
=
252
RC
RC RC
400 V (MOC302X)
= 250 V (MOC301X)
(MOC302X)
=
158
RC
(MOC301X)
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 DUT with a normal LED input current,
then removing the current. The variable R
TEST
allows
the dv/dt to be gradually increased until the DUT
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 DUT stops
triggering. τ
RC
is measured at this point and recorded.
V
CC
R
in
1
2
3
6
5
4
120 V
60 Hz
180 Ω
R
L
MOC3010M
MOC3011M
MOC3012M
V
CC
R
in
1
2
3
6
5
4
0.1 μF
180 Ω
C1
2.4 kΩ
Z
L
120 V
60 Hz
MOC3010M
MOC3011M
MOC3012M