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MOC3031M Datasheet(PDF) 6 Page - Fairchild Semiconductor

Part No. MOC3031M
Description  6-PIN DIP ZERO-CROSS OPTOISOLATORS TRIAC DRIVER OUTPUT (250/400 VOLT PEAK)
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

MOC3031M Datasheet(HTML) 6 Page - Fairchild Semiconductor

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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.
Rin is calculated so that IF is equal to the rated IFT of the part, 5 mA for the MOC3033M and MOC3043M, 10 mA for the MOC3032M
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.
Figure 9. Static dv/dt Test Circuit
Figure 10. Static dv/dt Test Waveform
(MOC3031M, MOC3032M, MOC3033M)
Vdc
+400 for MOC304XM
+250 for MOC303XM
R = 10 k
CTEST
X100
SCOPE
PROBE
PULSE
INPUT
MERCURY
WETTED
RELAY
158 V
0 VOLTS
APPLIED VOLTAGE
WAVEFORM
Vmax = 250 V
dv/dt =
0.63 Vmax
=
158
RTEST
D.U.T.
D.U.T.
τ
τ
τ
τ
RC
RC
RC
Figure 11. Static dv/dt Test Waveform
(MOC3041M, MOC3042M, MOC3043M)
252 V
0 VOLTS
APPLIED VOLTAGE
WAVEFORM
Vmax = 400 V
dv/dt =
0.63 Vmax
=
252
RC
τ
RC
RC
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 trigger-
ing the D.U.T. with a normal LED input current, then removing the
current. The variable RTEST 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 trig-
gering.
τ
RC is measured at this point and recorded.
Figure 12. Hot-Line Switching Application Circuit
(MOC3031M, MOC3032M, MOC3033M)
0.01
VCC
Rin
1
2
3
6
5
4
115 VAC
HOT
NEUTRAL
180
*For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
1 k
MOC3031M
MOC3032M
MOC3033M
39
*
LOAD
Figure 13. Hot-Line Switching Application Circuit
(MOC3041M, MOC3042M, MOC3043M)
0.01
VCC
Rin
1
2
3
6
5
4
240 VAC
HOT
NEUTRAL
360
*For highly inductive loads (power factor < 0.5), change this value to 360 ohms.
330
MOC3041M
MOC3042M
MOC3043M
39
*
LOAD


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