MOC3083FVM Equivalent & Substitute Parts

Part Overview

The MOC3083FVM is an optoisolator with triac output manufactured by onsemi, designed for high-voltage isolation applications. It features a 7500Vpk isolation rating, single channel configuration, and zero-crossing detection circuit in a 6-SMD surface mount package. The product is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Substiute Parts

MOC3083FVM

onsemiIn Stock: 734MOC3083FVM Datasheet

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MOC3083SVM

onsemiIn Stock: 23840MOC3083SVM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MOC3083FVM is determined by the following critical parameters:

• Output Type: Must be Triac output optoisolator
• Number of Channels: Must be single channel (1)
• Package / Case: Must be 6-SMD, Gull Wing surface mount
• Zero Crossing Circuit: Must include zero-crossing detection
• Current Specifications: LED trigger current (Ift) and hold current (Ih) must be compatible
• Voltage - Off State: Must support 800 V minimum
• Mounting Type: Must be surface mount compatible

The MOC3083SVM meets these core substitution criteria while maintaining functional equivalence in the MOC308 product family. Both components share identical channel configuration, package geometry, and zero-crossing functionality. The primary difference lies in isolation voltage rating and product status.

Parameter Comparison

Engineering Selection Recommendations

The MOC3083SVM is the direct substitute for the obsolete MOC3083FVM based on the following factors:

Product Status: The MOC3083SVM maintains active production status with 23,800 units in stock, ensuring long-term availability compared to the obsolete MOC3083FVM.

Functional Compatibility: Both components share identical electrical characteristics for LED trigger current, hold current, DC forward current, and off-state voltage. The 6-SMD, Gull Wing package ensures direct PCB footprint compatibility without layout modifications.

Compliance and Certifications: The MOC3083SVM carries IEC/EN/DIN and UL approvals with ROHS3 compliance, meeting modern regulatory requirements. Both components maintain REACH Unaffected status and EAR99 export classification.

Isolation Voltage Consideration: The MOC3083SVM provides 4170Vrms isolation versus the MOC3083FVM's 7500Vpk rating. Selection depends on application isolation requirements. For applications requiring the higher 7500Vpk isolation specification, alternative components outside the MOC308 family may be necessary.

Frequently Asked Questions (FAQ)

Q: Can MOC3083SVM directly replace MOC3083FVM on existing PCBs?

A: Yes, the MOC3083SVM uses the identical 6-SMD, Gull Wing package and pinout, allowing direct PCB substitution without layout changes. Both components are surface mount compatible with the same footprint requirements.

Q: What is the primary difference between these two parts?

A: The isolation voltage rating differs: MOC3083FVM provides 7500Vpk isolation, while MOC3083SVM provides 4170Vrms isolation. All other electrical parameters including trigger current, hold current, and off-state voltage are identical.

Q: Is the MOC3083SVM suitable for high-voltage isolation applications?

A: The MOC3083SVM's 4170Vrms isolation rating is suitable for standard industrial and consumer AC control applications. Applications requiring isolation above 4170Vrms should evaluate alternative optoisolator families with higher voltage ratings.

Q: What compliance standards does the MOC3083SVM meet?

A: The MOC3083SVM meets IEC/EN/DIN and UL standards with ROHS3 compliance. Both components are REACH Unaffected and classified as EAR99 for export purposes.

Q: Why is the MOC3083FVM listed as obsolete?

A: The MOC3083FVM has been discontinued by onsemi. The MOC3083SVM serves as the active production equivalent within the MOC308 optoisolator family.

Q: Are there any thermal or operating temperature differences?

A: The MOC3083SVM specifies an operating temperature range of -40°C to 85°C. The MOC3083FVM operating temperature range is not specified in available documentation.