MOC3052FVM Equivalent & Substitute Parts

Part Overview

The MOC3052FVM is a 7.5kV isolation optoisolator with triac output manufactured by onsemi in a 6-SMD surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The MOC3052FVM provides galvanic isolation suitable for AC switching applications requiring high voltage isolation ratings.

Substiute Parts

MOC3052FVM

onsemiIn Stock: 876MOC3052FVM Datasheet

Current PartRFQ

MOC3052SVM

onsemiIn Stock: 2183MOC3052SVM Datasheet

SimilarRFQ

VO3052-X016

Vishay Semiconductor Opto DivisionIn Stock: 2899VO3052-X016 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC3052FVM is determined by the following critical parameters:

• Output Type: Triac output configuration
• Voltage - Isolation: Minimum 7500Vpk isolation rating
• Number of Channels: Single channel
• Voltage - Off State: 600 V
• Current - LED Trigger (Ift): Maximum 10mA
• Current - DC Forward (If): Maximum 60 mA
• Operating Temperature Range: -40°C to 85°C minimum
• Mounting Type: Surface mount preferred for PCB compatibility

The MOC3052FVM has two identified substitutes: MOC3052SVM (onsemi) and VO3052-X016 (Vishay). Both maintain the core triac output functionality and single-channel configuration. However, they differ in isolation voltage ratings, package types, and product status, which affects their suitability as direct replacements.

Parameter Comparison

Engineering Selection Recommendations

MOC3052SVM (onsemi): This substitute is the closest functional equivalent to the MOC3052FVM. Both are onsemi products with identical 6-SMD surface mount packaging and operating temperature ranges. The MOC3052SVM is currently active in production and ROHS3 compliant. However, the isolation voltage is reduced from 7500Vpk to 4170Vrms, which represents a lower isolation rating. This substitute is suitable only for applications where the reduced isolation voltage meets system requirements.

VO3052-X016 (Vishay): This substitute provides 5300Vrms isolation, which is intermediate between the MOC3052FVM and MOC3052SVM. The VO3052-X016 offers superior static dV/dt performance (1.5kV/µs versus 1kV/µs) and an extended operating temperature range (-55°C to 100°C). However, it uses through-hole 6-DIP packaging rather than surface mount, requiring PCB layout modifications. The VO3052-X016 is active and ROHS3 compliant.

Both substitutes maintain the critical triac output configuration, single-channel design, 600V off-state voltage, and 10mA maximum LED trigger current. Selection depends on isolation voltage requirements and packaging constraints.

Frequently Asked Questions (FAQ)

Q: Can MOC3052SVM directly replace MOC3052FVM in all applications?

A: MOC3052SVM shares identical packaging and mounting type but has lower isolation voltage (4170Vrms versus 7500Vpk). Direct replacement is possible only if your application isolation requirements are met by the lower rating. Verify system voltage isolation specifications before substitution.

Q: What is the difference between Vpk and Vrms isolation ratings?

A: Vpk (peak voltage) and Vrms (RMS voltage) are different measurement standards for isolation voltage. The MOC3052FVM specifies 7500Vpk while MOC3052SVM specifies 4170Vrms. These are not directly comparable values. Consult application requirements and isolation standards to determine adequacy.

Q: Why does VO3052-X016 use through-hole packaging instead of surface mount?

A: VO3052-X016 is a Vishay product with a different design heritage than the onsemi MOC305 series. The 6-DIP through-hole package requires different PCB footprints and assembly processes compared to the 6-SMD surface mount configuration of MOC3052FVM and MOC3052SVM.

Q: Are all three parts ROHS3 compliant?

A: MOC3052FVM does not specify RoHS status. MOC3052SVM and VO3052-X016 are both ROHS3 compliant. If RoHS compliance is required for your application, use MOC3052SVM or VO3052-X016.

Q: What is the significance of static dV/dt rating?

A: Static dV/dt (minimum 1kV/µs for MOC3052FVM, 1.5kV/µs for VO3052-X016) indicates the maximum rate of voltage change the triac output can withstand without false triggering. Higher dV/dt ratings provide better noise immunity in switching applications.

Q: Can I use VO3052-X016 as a drop-in replacement?

A: VO3052-X016 requires PCB redesign due to different packaging (6-DIP through-hole versus 6-SMD surface mount). It is not a drop-in replacement but is a functional alternative if layout modifications are acceptable.