moc3031-m Fairchild Semiconductor, moc3031-m Datasheet - Page 6

• Manufacturer Part Number: moc3031-m
• Description: 6-pin Dip Zero-cross Optoisolators Triac Driver Output 250/400 Volt Peak
• Manufacturer: Fairchild Semiconductor

MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M Rev. 1.0.1
Typical circuit (Fig 12, 13) 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.
R
and MOC3042M, or 15 mA for the MOC3031M and MOC3041M. The 39 ohm resistor and 0.01 µF capacitor are for snubbing of the
triac and may or may not be necessary depending upon the particular triac and load used.
+250 for MOC303XM
+400 for MOC304XM
V
in
CC
APPLIED VOLTAGE
0 VOLTS
is calculated so that I
WAVEFORM
*
For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
R
PULSE
Vdc
INPUT
in
Figure 12. Hot-Line Switching Application Circuit
τ
RC
1
2
3
(MOC3031M, MOC3032M, MOC3033M)
Figure 10. Static dv/dt Test Waveform
(MOC3031M, MOC3032M, MOC3033M)
158 V
MOC3031M
MOC3032M
MOC3033M
MERCURY
Figure 9. Static dv/dt Test Circuit
WETTED
RELAY
F
is equal to the rated I
R
TEST
6
5
4
1 k
180Ω
C
TEST
D.U.T.
D.U.T.
R = 10 kΩ
39Ω
FT
0.01
V max = 250 V
dv/dt =
SCOPE
PROBE
X100
*
of the part, 5 mA for the MOC3033M and MOC3043M, 10 mA for the MOC3032M
LOAD
0.63 V max
τ
RC
HOT
NEUTRAL
=
115 VAC
158
RC
1. The mercury wetted relay provides a high speed repeated pulse
2. 100x scope probes are used, to allow high speeds and voltages.
3. The worst-case condition for static dv/dt is established by trigger-
6
to the D.U.T.
ing the D.U.T. with a normal LED input current, then removing the
current. The variable R
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 trig-
gering.
V
APPLIED VOLTAGE
CC
0 VOLTS
WAVEFORM
*
τ
For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
RC
R
in
is measured at this point and recorded.
Figure 13. Hot-Line Switching Application Circuit
τ
RC
1
2
3
(MOC3041M, MOC3042M, MOC3043M)
(MOC3041M, MOC3042M, MOC3043M)
Figure 11. Static dv/dt Test Waveform
252 V
MOC3041M
MOC3042M
MOC3043M
TEST
330
6
5
4
allows the dv/dt to be gradually
360Ω
39Ω
0.01
V max = 400 V
dv/dt =
*
LOAD
www.fairchildsemi.com
0.63 V max
τ
RC
HOT
NEUTRAL
240 VAC
=
τ
252
RC