PACKAGE SCHEMATIC
9/2/04
Page 1 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
DESCRIPTION
The MOC3051-M and MOC3052-M consist of a AlGaAs infrared emitting diode optically coupled to a non-zero-crossing silicon
bilateral AC switch (triac). These devices isolate low voltage logic from 115 and 240 Vac lines to provide random phase control of
high current triacs or thyristors. These devices feature greatly enhanced static dv/dt capability to ensure stable switching perfor-
mance of inductive loads.
FEATURES
• Excellent I
FT
stability—IR emitting diode has low degradation
• High isolation voltage—minimum 7500 peak VAC
• Underwriters Laboratory (UL) recognized—File #E90700
• 600V peak blocking voltage
• VDE recognized (File #94766)
- Ordering option V (e.g. MOC3052V-M)
APPLICATIONS
• Solenoid/valve controls
• Lamp ballasts
• Static AC power switch
• Interfacing microprocessors to 115 and 240 Vac peripherals
• Solid state relay
• Incandescent lamp dimmers
•Temperature controls
• Motor controls
6
1
6
6
1
1
MAIN TERM.
NC*
N/C
*DO NOT CONNECT
(TRIAC SUBSTRATE)
1
2
3
ANODE
CATHODE
4
5
6MAIN TERM.
9/2/04
Page 2 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
ABSOLUTE MAXIMUM RATINGS
(T
A
= 25°C unless otherwise noted)
Parameters Symbol Device Value Units
TOTAL DEVICE
Storage Temperature T
STG
All -40 to +150 °C
Operating Temperature T
OPR
All -40 to +85 °C
Lead Solder Temperature T
SOL
All 260 for 10 sec °C
Junction Temperature Range T
J
All -40 to +100 °C
Isolation Surge Voltage
(3)
(peak AC voltage, 60Hz, 1 sec duration) V
ISO
All 7500 Vac(pk)
Total Device Power Dissipation @ 25°C P
D
All 330 mW
Derate above 25°C 4.4 mW/°C
EMITTER
Continuous Forward Current I
F
All 60 mA
Reverse Voltage V
R
All 3 V
Total Power Dissipation 25°C Ambient P
D
All 100 mW
Derate above 25°C 1.33 mW/°C
DETECTOR
Off-State Output Terminal Voltage V
DRM
All 600 V
Peak Repetitive Surge Current (PW = 100 ms, 120 pps) I
TSM
All 1 A
Total Power Dissipation @ 25°C Ambient P
D
All 300 mW
Derate above 25°C 4 mW/°C
9/2/04
Page 3 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
*Typical values at T
A
= 25°C
Note
1. Test voltage must be applied within dv/dt rating.
2. All devices are guaranteed to trigger at an I
F
value less than or equal to max I
FT
. Therefore, recommended operating I
F
lies
between max 15 mA for MOC3051, 10 mA for MOC3052 and absolute max I
F
(60 mA).
3. Isolation surge votlage, VISO, is an internal device breakdown rating. For this text, pins 1 and 2 are common, and pins 4, 5 and
6 are common.
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C Unless otherwise specified)
INDIVIDUAL COMPONENT CHARACTERISTICS
Parameters Test Conditions Symbol Device Min Typ* Max Units
EMITTER
Input Forward Voltage I
F
= 10 mA V
F
All 1.15 1.5 V
Reverse Leakage Current V
R
= 3 V I
R
All 0.05 100 µA
DETECTOR
Peak Blocking Current, Either Direction V
DRM
, I
F
= 0 (note 1) I
DRM
All 10 100 nA
Peak On-State Voltage, Either Direction I
TM
= 100 mA peak, I
F
= 0 V
TM
All 1.7 2.5 V
Critical Rate of Rise of Off-State Voltage I
F
= 0 (figure 7, @400V) dv/dt All 1000 V/µs
TRANSFER CHARACTERISTICS
(T
A
= 25°C Unless otherwise specified.)
DC Characteristics Test Conditions Symbol Device Min Typ* Max Units
LED Trigger Current,
either direction
Main terminal
Voltage = 3V (note 2) I
FT
MOC3051-M 15 mA
MOC3052-M 10
Holding Current, Either Direction I
H
All 280 µA
9/2/04
Page 4 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
I
F
versus Temperature (normalized)
This graph (figure 3) shows the increase of the trigger current
when the device is expected to operate at an ambient tempera-
ture below 25°C. Multiply the normalized I
FT
shown this graph
with the data sheet guaranteed I
FT
.
Example:
T
A
= -40°C, I
FT
= 10 mA
I
FT
@ -40°C = 10 mA x 1.4 = 14 mA
Phase Control Considerations
LED Trigger Current versus PW (normalized)
Random Phase Triac drivers are designed to be phase control-
lable. They may be triggered at any phase angle within the AC
sine wave. Phase control may be accomplished by an AC line
zero cross detector and a variable pulse delay generator which
is synchronized to the zero cross detector. The same task can
be accomplished by a microprocessor which is synchronized
to the AC zero crossing. The phase controlled trigger current
may be a very short pulse which saves energy delivered to the
input LED. LED trigger pulse currents shorter than 100 µs must
have an increased amplitude as shown on Figure 4. This graph
shows the dependency of the trigger current I
FT
versus the
pulse width can be seen on the chart delay t(d) versus the LED
trigger current.
I
FT
in the graph I
FT
versus (PW) is normalized in respect to the
minimum specified I
FT
for static condition, which is specified in
the device characteristic. The normalized I
FT
has to be multi-
plied with the devices guaranteed static trigger current.
Example:
Guaranteed I
FT
= 10 mA, Trigger pulse width PW = 3 µs
I
FT
(pulsed) = 10 mA x 5 = 50 mA
Figure. 4 LED Current Required to Trigger vs. LED Pulse Width
Figure. 2 On-State Characteristics
ON-STATE VOLTAGE - VTM (V)
-3 -2 -1 0 1 2 3
ON-STATE CURRENT - ITM (mA)
-800
-600
-400
-200
0
200
400
600
800
PWin, LED TRIGGER PULSE WIDTH (
µ
s)
1
25
20
15
10
5
0251020 50 10
0
NORMALIZED TO:
PWin
≥
100
µ
s
IFT, NORMALIZED LED TRIGGER CURRENT
Figure. 3 Trigger Current vs. Ambient Temperature
AMBIENT TEMPERATURE - TA (oC)
-40 -20 0 20 40 60 80 100
TRIGGER CURRENT - I
FT
(NORMALIZED)
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
Figure. 1 LED Forward Voltage vs. Forward Current
I
F
- LED FORWARD CURRENT (mA)
110100
V
F
- FORWARD VOLTAGE (V)
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
TA = -55oC
TA = 25oC
TA = 100oC
NORMALIZED TO TA = 25°C
9/2/04
Page 5 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
Minimum LED Off Time in Phase Control
Applications
In Phase control applications one intends to be able to control
each AC sine half wave from 0 to 180 degrees. Turn on at zero
degrees means full power and turn on at 180 degree means
zero power. This is not quite possible in reality because triac
driver and triac have a fixed turn on time when activated at
zero degrees. At a phase control angle close to 180 degrees
the driver’s turn on pulse at the trailing edge of the AC sine
wave must be limited to end 200 ms before AC zero cross as
shown in Figure 5. This assures that the triac driver has time
to switch off. Shorter times may cause loss of control at the
following half cycle.
I
FT
versus dv/dt
Tr iac drivers with good noise immunity (dv/dt static) have inter-
nal noise rejection circuits which prevent false triggering of the
device in the event of fast raising line voltage transients. Induc-
tive loads generate a commutating dv/dt that may activate the
triac drivers noise suppression circuits. This prevents the
device from turning on at its specified trigger current. It will in
this case go into the mode of “half waving” of the load. Half
waving of the load may destroy the power triac and the load.
Figure 8 shows the dependency of the triac drivers I
FT
versus
the reapplied voltage rise with a Vp of 400 V. This dv/dt condi-
tion simulates a worst case commutating dv/dt amplitude.
It can be seen that the I
FT
does not change until a commutat-
ing dv/dt reaches 1000 V/ms. The data sheet specified I
FT
is
therefore applicable for all practical inductive loads and load
factors.
Figure. 7 Leakage Current, I DRM vs. Temperature
T
A, AMBIENT TEMPERATURE (
o
C)
-40 -20 0 20 40 60 80 100
IDRM
, LEAKAGE CURRENT (nA)
0.1
1
10
100
1000
10000
Figure 5. Minimum Time for LED Turn–Off to Zero
Cross of AC Trailing Edge
AC SINE
0
ϒ
180
°
LED PW
LED CURRENT
LED TURN OFF MIN 200
µ
s
Figure. 6 Holding Current, I H vs. Temperature
T
A, AMBIENT TEMPERATURE (
o
C)
IH, HOLDING CURRENT (mA)
-40
1
0.9
0-30 -20 -10 0 10 20 30 4050607080
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
dv/dt (V/
µ
s)
0.001
1.5
0.5 10000
NORMALIZED TO:
IFT at 3 V
IFT, LED TRIGGER CURRENT (NORMALIZED)
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.01 0.1 1 10 100 1000
Figure. 8 LED Trigger Current, I FT vs. dv/dt
9/2/04
Page 6 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
t(delay), t(f) versus I
FT
The triac driver’s turn on switching speed consists of a turn on
delay time t(d) and a fall time t(f). Figure 9 shows that the delay
time depends on the LED trigger current, while the actual
trigger transition time t(f) stays constant with about one micro
second.
The delay time is important in very short pulsed operation
because it demands a higher trigger current at very short
trigger pulses. This dependency is shown in the graph I
FT
versus LED PW.
The turn on transition time t(f) combined with the power triac’s
turn on time is important to the power dissipation of this
device.
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.
SCOPE
IFT
VTM
t(d)
t(f)
ZERO CROSS
DETECTOR
EXT. SYNC
Vout
FUNCTION
GENERATOR
PHASE CTRL.
PW CTRL.
PERIOD CTRL.
Vo AMPL. CTRL.
IFT
VTM
10 k
Ω
DUT
100
Ω
ISOL. TRANSF.
AC
115 VAC
Figure 9. Delay Time, t(d), and Fall Time, t(f),
vs. LED Trigger Current
IFT, LED TRIGGER CURRENT (mA)
100
0.110 20 30 40 50 60
10
t(delay) AND t(fall) ( s)
µ
1t(f)
t(d)
Figure 10. Static dv/dt Test Circuit
+400
Vdc
PULSE
INPUT
RTEST
CTEST
R = 1 k
Ω
MERCURY
WETTED
RELAY D.U.T.
X100
SCOPE
PROBE
APPLIED VOLTAGE
WAVEFORM
Vmax = 400 V
dv/dt = 0.63 V
τ
RC
τ
=
τ
RC
252 V
0 VOLTS
9/2/04
Page 7 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
APPLICATIONS GUIDE
Basic Triac Driver Circuit
The new random phase triac driver family MOC3052-M and
MOC3051-M are very immune to static dv/dt which allows
snubberless operations in all applications where external
generated noise in the AC line is below its guaranteed dv/dt
withstand capability. For these applications a snubber circuit is
not necessary when a noise insensitive power triac is used.
Figure 11 shows the circuit diagram. The triac driver is directly
connected to the triac main terminal 2 and a series Resistor R
which limits the current to the triac driver. Current limiting
resistor R must have a minimum value which restricts the
current into the driver to maximum 1A.
R = Vp AC/I
TM
max rep. = Vp AC/1A
The power dissipation of this current limiting resistor and the
triac driver is very small because the power triac carries the
load current as soon as the current through driver and current
limiting resistor reaches the trigger current of the power triac.
The switching transition times for the driver is only one micro
second and for power triacs typical four micro seconds.
Triac Driver Circuit for Noisy Environments
When the transient rate of rise and amplitude are expected to
exceed the power triacs and triac drivers maximum ratings a
snubber circuit as shown in Figure 12 is recommended. Fast
transients are slowed by the R-C snubber and excessive
amplitudes are clipped by the Metal Oxide Varistor MOV.
Triac Driver Circuit for Extremely Noisy Environments,
as
specified in the noise standards IEEE472 and IEC255-4.
Industrial control applications do specify a maximum transient
noise dv/dt and peak voltage which is superimposed onto the
AC line voltage. In order to pass this environment noise test a
modified snubber network as shown in Figure 13 is recom-
mended.
Figure 11. Basic Driver Circuit
Figure 12. Triac Driver Circuit for Noisy Environments
Figure 13. Triac Driver Circuit for Extremely Noisy
Environments
VCC
RET.
RLED TRIAC DRIVER POWER TRIAC
AC LINE
LOAD
R
Q
CONTROL
R
TRIAC DRIVER POWER TRIAC
RLED
VCC
RET.
CONTROL
RS
CS
MOV
LOAD
AC LINE
R
TRIAC DRIVER
POWER TRIAC
RS
CS
MOV
LOAD
AC LINE
VCC
RET.
CONTROL
RLED
RLED = (VCC - V F LED - V sat Q)/IFT
R = Vp AC line/ITSM
Typical Snubber values RS = 33 Ω, CS = 0.01 µF
MOV (Metal Oxide Varistor) protects triac and
driver from transient overvoltages >VDRM max.
Recommended snubber to pass IEEE472 and IEC255-4 noise tests
RS = 47 W, CS = 0.01 mF
9/2/04
Page 8 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
NOTE
All dimensions are in inches (millimeters)
Package Dimensions (Through Hole) Package Dimensions (Surface Mount)
Package Dimensions (0.4” Lead Spacing) Recommended Pad Layout for
Surface Mount Leadform
0.350 (8.89)
0.320 (8.13)
0.260 (6.60)
0.240 (6.10)
0.320 (8.13)
0.070 (1.77)
0.040 (1.02) 0.014 (0.36)
0.010 (0.25)
0.200 (5.08)
0.115 (2.93)
0.100 (2.54)
0.015 (0.38)
0.020 (0.50)
0.016 (0.41) 0.100 (2.54) 15°
0.012 (0.30)
Pin 1 ID
Seating Plane
0.350 (8.89)
0.320 (8.13)
0.260 (6.60)
0.240 (6.10)
0.390 (9.90)
0.332 (8.43)
0.070 (1.77)
0.040 (1.02)
0.014 (0.36)
0.010 (0.25)
0.320 (8.13)
0.035 (0.88)
0.006 (0.16)
0.012 (0.30)
0.008 (0.20)
0.200 (5.08)
0.115 (2.93)
0.025 (0.63)
0.020 (0.51)
0.020 (0.50)
0.016 (0.41)
0.100 [2.54]
Seating Plane
Pin 1 ID
0.350 (8.89)
0.320 (8.13)
0.260 (6.60)
0.240 (6.10)
0.070 (1.77)
Seating Plane
0.040 (1.02) 0.014 (0.36)
0.010 (0.25)
0.200 (5.08)
0.115 (2.93)
0.020 (0.50)
0.016 (0.41)
0.100 [2.54]
0.100 (2.54)
0.015 (0.38)
0.012 (0.30)
0.008 (0.21)
0.425 (10.80)
0.400 (10.16)
Pin 1 ID
0.070
(
1.78
)
0.060
(
1.52
)
0.030
(
0.76
)
0.100
(
2.54
)
0.305
(
7.75
)
0.425
(
10.79
)
9/2/04
Page 9 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
ORDERING INFORMATION
MARKING INFORMATION
Option Order Entry Identifier Description
SSSurface Mount Lead Bend
SD SR2 Surface Mount; Tape and reel
WT0.4" Lead Spacing
300 V VDE 0884
300W TV VDE 0884, 0.4" Lead Spacing
3S SR2V VDE 0884, Surface Mount
3SD SR2V VDE 0884, Surface Mount, Tape & Reel
MOC3051
V X YY Q
1
2
6
43 5
*Note – Parts that do not have the ‘V’ option (see definition 3 above) that are marked with
date code ‘325’ or earlier are marked in portrait format.
Definitions
1Fairchild logo
2Device number
3VDE mark (Note: Only appears on parts ordered with VDE
option – See order entry table)
4 One digit year code, e.g., ‘3’
5Two digit work week ranging from ‘01’ to ‘53’
6 Assembly package code
9/2/04
Page 10 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
Reflow Profile (White Package, -M Suffix)
Carrier Tape Specifications
4.0 ± 0.1
Ø1.5 MIN
User Direction of Feed
2.0 ± 0.05
1.75 ± 0.10
11.5 ± 1.0
24.0 ± 0.3
12.0 ± 0.1
0.30 ± 0.05
21.0 ± 0.1
4.5 ± 0.20
0.1 MAX 10.1 ± 0.20
9.1 ± 0.20
Ø1.5 ± 0.1/-0
Ramp up = 2–10°C/sec • Peak reflow temperature: 245°C (package surface temperature)
• Time of temperature higher than 183°C for 120–180 seconds
• One time soldering reflow is recommended
230°C, 10–30 s
Time (Minute)
0
300
250
200
150
100
50
0
0.5 1 1.5 2 2.5 3 3.5 4 4.5
Temperature (°C)
Time above 183°C, 120–180 sec
245°C peak
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO
ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME
ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;
NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
9/2/04
Page 11 of 11
© 2004 Fairchild Semiconductor Corporation
6-PIN DIP RANDOM-PHASE
OPTOISOLATORS TRIAC DRIVERS
(600 VOLT PEAK)
MOC3051-M MOC3052-M
