MOC3063 Reference Tables, Pins & Specifications

Pin reference

Signal names, electrical functions and connection guidance

DIP-6

Physical pin numbers6 pins

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MOC3063 pin functions and connections
Signal	Type	Function & connection
A	Infrared LED anode	Positive terminal of the optical input emitter. Connection guidance Use a buffered 5 V source through 560 Ω. Drive above the required trigger current with temperature and tolerance margin.
K	Infrared LED cathode	Input-side return for the emitter current. Connection guidance Return to GND_A. Do not join the input return to the isolated output domain.
NC	Not connected	No intended internal connection. Connection guidance Leave unconnected.
MT	Main output terminal	One terminal of the light-triggered bilateral switch. Connection guidance Connect to the isolated AC source return in the example. This is a triac driver, not a high-power load switch.
DNC	Do not connect	Internal triac substrate lead. Connection guidance Leave open; do not route a signal through this pin. NC in the manufacturer symbol does not authorize connecting this substrate lead.
MT	Main output terminal	Other terminal of the light-triggered bilateral switch. Connection guidance Connect through the pulse/load resistor to the isolated AC source. The zero-cross inhibit circuit delays triggering until a sufficiently small output voltage.

Selected onsemi family

Manufacturer-referenced values5 parameters

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Parameter	Value	Conditions / notes
Through-hole / surface-mount	MOC3063M / MOC3063SR2M	646BX / formed 646BY
Input	1 anode · 2 cathode	Current limiting required
Output	Main terminals 4 and 6	Bilateral triac-driver output
Leave open	Pin 3 NC · pin 5 substrate	Never use pin 5 as a wiring junction
Trigger type	Zero-cross	Not suitable for arbitrary phase-angle turn-on

Read the selected manufacturer’s variant rather than assuming all similar part names match.

Ambient 25°C unless noted

Manufacturer-referenced values7 parameters

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Parameter	Value	Conditions / notes
Emitter continuous / reverse	60 mA / 6 V	Separate stress limits
Output blocking	600 V peak	Either direction
Output surge	1 A single 60 Hz cycle	Not continuous load current
Repetitive output peak	100 mA	Separate from surge rating
Input / detector dissipation	120 / 150 mW	Derate above 25°C
Total dissipation	250 mW	Combined input and detector limit
Ambient / junction max.	−40 to +85°C / +100°C	Storage −40 to +125°C

A driver output must not be used as a mains power switch.

TA 25°C; selected device

Manufacturer-referenced values6 parameters

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Parameter	Value	Conditions / notes
LED forward voltage	1.3 V typical; 1.5 V maximum	IF 30 mA
LED trigger current	5 mA maximum	Main-terminal voltage 3 V
Peak on-state voltage	1.8 V typical; 3 V maximum	ITM 100 mA; IF at rated trigger
Holding current	500 µA typical	Either direction
Off-state leakage	10 nA typical; 500 nA maximum	Rated blocking voltage; input off
Static dV/dt	600 V/µs minimum; 1500 typical	Input off; specified rated-voltage test

The low-current demonstration uses an explicit drop assumption.

MOC3063M, not the lower-threshold MOC3163M

Manufacturer-referenced values4 parameters

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Parameter	Value	Conditions / notes
Inhibit voltage	12 V typical; 20 V maximum	Above this output voltage the device will not trigger; IF rated
Inhibited leakage	2 mA maximum	600 V output; IF rated
Optical command already on	Wait for eligible low-voltage window	No immediate arbitrary-phase turn-on
Turn-off	Load current must fall below holding level	Input off prevents retrigger after commutation

These voltage thresholds do not specify an exact time delay.

Device certification does not certify the assembled board

Manufacturer-referenced values6 parameters

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Parameter	Value	Conditions / notes
Input-output dielectric test	4170 Vrms · 1 minute	Test condition, not continuous working voltage
External creepage / clearance	≥7 mm / ≥7 mm	Selected standard package; check installed board
Body	8.51 × 6.35 mm nominal	2.54 mm pitch; 3.40 mm nominal mould height
DIP footprint	7.62 mm rows	Original 1 mm holes, 1.8 mm pads
SMD recommended lands	1.525 × 1.78 mm	9.015 mm rows; 10.54 mm outer span
Isolation layout	Keep both domains separate	Slots, copper, contamination and enclosure affect the system

Use the relevant safety approval option and complete system insulation design.

Buffered input and separate isolated output source

Manufacturer-referenced values7 parameters

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Parameter	Value	Conditions / notes
Input source / resistor	5 V_A / 560 Ω	Input switch or buffer must source the LED current
Nominal LED current	6.61 mA	Assumed VF 1.3 V
At 1.5 V LED drop	6.25 mA	Nominal supply/resistor only; temperature and tolerance remain
Output source / load	12 V RMS isolated / 2.2 kΩ	Resistor ≥0.25 W
Approximate peak load	6.90 mA	(12√2−1.8)/2200; assumed output drop
Resistor power upper bound	65.5 mW	12²/2200; neglects device drop
Returns	GND_A isolated from AC_B	No wire crosses the barrier

Calculated teaching values, not a measured switching waveform.