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Name: MOC3051M
Brand: ON Semiconductor
SKU: MOC3051M
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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ON Semiconductor MOC3051M

Part No.:: MOC3051M

Manufacturer:: ON Semiconductor

Package:: 6-DIP (0.300, 7.62mm)

Datasheet:: MOC3051M.pdf

Description:: OPTOISOLATOR 4.17KV TRIAC 6DIP

In Stock:: 3675

Quantity:: Add To Cart

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MOC3051M Typical application Circuitry

MOC3051M

MOC3051M is an optically isolated triac driver, employed chiefly in interfacing microcontrollers and other low-voltage, low-current control circuits with power loads, particularly AC loads.

Role: MOC3051M serves as a medium, allowing control signals to pass from the low voltage side to the power side while maintaining electrical isolation between them.

Usage: It is prominently used in controlling household appliances, industrial equipment, and other AC loads, where electrical isolation between the control and load sides is a prerequisite.

Characteristics: MOC3051M is notable for its high isolation voltage, low trigger current, and the ability to control a variety of triac types, driving loads up to several amperes.

Connection Procedure for Controlling a Fan Speed:

1. Control Side Connection:

- Microcontroller Interface: Connect the anode of the internal LED (Pin 1) to a digital output pin on the microcontroller, and the cathode (Pin 2) to the ground. Implement a current-limiting resistor to control the LED current, determining the triggering sensitivity.

2. Power Side Connection:

- Triac Drive: Pin 5, the main terminal, is connected to the gate of the power triac, whereas Pin 4 is connected to the MT1 terminal of the power triac. This facilitates the control of the AC load when MOC3051M is triggered.

- AC Load: The MT2 terminal of the power triac connects directly to the AC load, and the other terminal of the load connects to the AC power supply, closing the circuit.

3. Safety Measures:

- Optical Isolation: Since MOC3051M offers optical isolation, it is imperative to ensure no direct electrical connection exists between the control and power sides, maintaining safety and noise reduction.

- Voltage Ratings: Select a power triac with appropriate voltage and current ratings to handle the AC load safely and efficiently.

4. Operational Verification:

- Functionality Check: Operational testing is mandatory to confirm the MOC3051M effectively controls the power triac and, consequently, the AC load based on the input signals.

- Safety Protocols: All circuit components, especially those on the power side, should adhere to the relevant safety standards to prevent electrical hazards.

Design Ponderings:

1. Trigger Sensitivity:

- Adjustment Means: Incorporate means to adjust the MOC3051M's triggering sensitivity for refined control over the AC load, especially for applications like fan speed control.

2. Noise Counteraction:

- Filter Incorporation: Include filters to mitigate noise, ensuring the MOC3051M and the entire control circuit's stable operation amidst potential electrical disturbances.

- Physical Separation: Enhance the physical separation between the control and power sides on the PCB to reinforce electrical isolation.

3. Thermal Management:

- Cooling Strategy: A well-articulated cooling strategy is essential, especially for the power triac, to dissipate heat efficiently during operation.

- Component Specification: Opt for components that can withstand operational temperatures to ensure the longevity and reliability of the circuit.

The MOC3051M's incorporation in fan speed control underscores its versatility and efficiency in bridging low-power control circuits and high-power loads. Ensuring adherence to outlined connections and safety standards is pivotal for optimized, safe, and reliable operation:

MOC3051M information

MOC3051M Specifications

Packaging:
Tube
Series:
-
ProductStatus:
Active
OutputType:
Triac
ZeroCrossingCircuit:
No
NumberofChannels:
1
Voltage-Isolation:
4170Vrms
Voltage-OffState:
600 V
StaticdV/dt(Min):
1kV/µs
Current-LEDTrigger(Ift)(Max):
15mA
Current-OnState(It(RMS))(Max):
-
Current-Hold(Ih):
220µA (Typ)
TurnOnTime:
-
Voltage-Forward(Vf)(Typ):
1.18V
Current-DCForward(If)(Max):
60 mA
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Through Hole

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3. Are the MOC3051M price and inventory displayed accurate?

The price and inventory of MOC3051M fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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6. What is the process for return or replacement of MOC3051M?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the MOC3051M we delivered, we will accept the replacement or return of the MOC3051M only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of MOC3051M.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations