MOC3033FVM Equivalent & Substitute Parts

Part Overview

The MOC3033FVM is a surface mount optoisolator with triac output manufactured by onsemi, designed for high-voltage isolation applications. This component features a 7500Vpk isolation voltage rating and integrated zero-crossing detection circuit, making it suitable for AC power control applications. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

MOC3033FVM

onsemiIn Stock: 1076MOC3033FVM Datasheet

Current PartRFQ

MOC3033SVM

Fairchild SemiconductorIn Stock: 4540MOC3033SVM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3033FVM is determined by the following critical parameters:

• Output Type: Must be Triac output optoisolator
• Zero Crossing Circuit: Must include integrated zero-crossing detection
• Number of Channels: Must be single channel (1)
• Voltage - Isolation: Minimum 4170Vrms (equivalent to 5900Vpk) acceptable; 7500Vpk preferred for full compatibility
• Voltage - Off State: 250 V standard
• Current - LED Trigger (Ift): Maximum 5mA
• Current - Hold (Ih): 400µA typical
• Current - DC Forward (If): Maximum 60 mA
• Mounting Type: Surface Mount required
• Package / Case: 6-SMD, Gull Wing required

The MOC3033SVM meets these substitution criteria with compatible electrical characteristics and identical package configuration.

Parameter Comparison

Engineering Selection Recommendations

The MOC3033SVM is a direct functional substitute for the obsolete MOC3033FVM based on the following factors:

Electrical Compatibility: Both components share identical triac output configuration, zero-crossing detection, single-channel architecture, and matching trigger current specifications (5mA maximum). The hold current (400µA typical) and forward current (60mA maximum) are identical across both parts.

Package Compatibility: Both components utilize the 6-SMD, Gull Wing surface mount package, enabling direct PCB layout compatibility without redesign.

Isolation Voltage Consideration: The MOC3033FVM specifies 7500Vpk isolation voltage, while the MOC3033SVM specifies 4170Vrms isolation voltage. For applications requiring the full 7500Vpk isolation rating, the MOC3033SVM's lower rating may not satisfy design requirements. For applications operating within 4170Vrms isolation specifications, the MOC3033SVM provides equivalent performance.

Product Status and Availability: The MOC3033SVM maintains active manufacturing status with established supply chain availability, whereas the MOC3033FVM is obsolete. The MOC3033SVM carries IEC/EN/DIN and UL certifications, providing regulatory compliance documentation.

Design Consideration: Applications originally designed for MOC3033FVM should verify that the 4170Vrms isolation voltage of MOC3033SVM meets system isolation requirements before implementation.

Frequently Asked Questions (FAQ)

Q: Can MOC3033SVM directly replace MOC3033FVM in existing designs?

A: MOC3033SVM is electrically and mechanically compatible with MOC3033FVM for applications requiring isolation voltages up to 4170Vrms. If the original design specifically requires 7500Vpk isolation voltage, alternative components with higher isolation ratings must be evaluated.

Q: What are the key compatibility criteria for substitution?

A: Substitution requires matching triac output type, zero-crossing detection circuit, single-channel configuration, 6-SMD Gull Wing package, and compatible current specifications (5mA trigger, 400µA hold, 60mA forward current maximum).

Q: Why is the isolation voltage different between these parts?

A: Isolation voltage ratings reflect different design specifications and manufacturing processes between onsemi and Fairchild Semiconductor. The MOC3033SVM's 4170Vrms rating is sufficient for standard AC power control applications within this voltage range.

Q: Are there regulatory or certification differences?

A: MOC3033SVM carries IEC/EN/DIN and UL certifications, while MOC3033FVM certification status is not specified. For applications requiring specific regulatory approvals, MOC3033SVM's documented certifications provide compliance verification.

Q: What is the moisture sensitivity level for MOC3033SVM?

A: Moisture sensitivity level (MSL) for MOC3033SVM is not provided in available specifications. Contact the manufacturer for detailed MSL classification if required for storage and handling procedures.

Q: Can both parts be used interchangeably in new designs?

A: MOC3033SVM is the recommended choice for new designs due to active manufacturing status, established supply chain, and regulatory certifications. MOC3033FVM should not be specified for new designs as it is obsolete.