MOC3052S-TA Equivalent & Substitute Parts

Part Overview

The MOC3052S-TA is an optoisolator with triac output manufactured by Lite-On Inc., designed for applications requiring galvanic isolation up to 5000Vrms. This component features a single-channel triac output in a 6-SMD surface mount package and maintains active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the MOC305 series while accommodating specific application constraints such as packaging availability, inventory requirements, or thermal operating ranges.

Substiute Parts

MOC3052S-TA

Lite-On Inc.In Stock: 972MOC3052S-TA Datasheet

Current PartRFQ

MOC3051SR2VM

onsemiIn Stock: 23787MOC3051SR2VM Datasheet

MFR RecommendedRFQ

MOC3052SR2VM

Fairchild SemiconductorIn Stock: 63496MOC3052SR2VM Datasheet

MFR RecommendedRFQ

MOC3052SVM

onsemiIn Stock: 2183MOC3052SVM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts within the MOC305 series are qualified based on the following criteria:

• Output Type: All substitutes maintain triac output configuration
• Package / Case: All substitutes use 6-SMD, Gull Wing surface mount package
• Number of Channels: All substitutes provide single-channel isolation
• Static dV/dt Performance: All substitutes meet or exceed 1kV/µs minimum requirement
• Voltage - Off State: All substitutes maintain 600V off-state voltage rating
• Mounting Type: All substitutes are surface mount compatible
• Base Product Number: All substitutes belong to MOC305 series
• RoHS3 Compliance: All substitutes maintain environmental compliance
• ECCN / HTSUS Classification: All substitutes share identical trade classification

Substitutes differ in isolation voltage rating, LED trigger current specifications, hold current characteristics, forward voltage, maximum forward current, operating temperature range, and moisture sensitivity level. These variations allow selection based on specific application requirements and supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain active product status and RoHS3 compliance, ensuring regulatory alignment with current environmental standards. MOC3051SR2VM and MOC3052SVM, both manufactured by onsemi, provide improved moisture sensitivity characteristics (MSL 1 vs. MSL 3), reducing handling and storage constraints. MOC3052SVM matches the LED trigger current specification (10mA) of the original part while offering superior moisture tolerance. MOC3051SR2VM accommodates higher LED trigger current requirements (15mA maximum) and may be selected when input drive capability is limited. MOC3052SR2VM from Fairchild Semiconductor provides alternative sourcing within the MOC305 series. Selection should prioritize isolation voltage requirements, operating temperature range compatibility, and packaging availability based on application-specific constraints.

Frequently Asked Questions (FAQ)

Q: Can MOC3051SR2VM replace MOC3052S-TA in all applications?

A: MOC3051SR2VM provides 4170Vrms isolation versus the original 5000Vrms rating. Substitution is valid only when application isolation voltage requirements do not exceed 4170Vrms. The part maintains equivalent triac output, package configuration, and dV/dt performance.

Q: What is the significance of MSL rating differences between parts?

A: MSL 3 (168 Hours) indicates moisture sensitivity requiring controlled storage and handling within 168 hours of package opening. MSL 1 (Unlimited) eliminates these constraints. onsemi variants (MOC3051SR2VM, MOC3052SVM) offer superior moisture tolerance for applications with extended shelf life or variable storage conditions.

Q: Are all substitute parts available in the same packaging format?

A: All substitutes use 6-SMD, Gull Wing surface mount packages. Packaging types differ: MOC3052S-TA uses standard packaging, MOC3051SR2VM is supplied in Tape & Reel format, and MOC3052SVM is supplied in Tube format. These variations affect procurement and assembly processes but maintain mechanical compatibility.

Q: What operating temperature range should be considered for thermal design?

A: MOC3052S-TA operates from -40°C to 100°C. onsemi substitutes (MOC3051SR2VM, MOC3052SVM) operate from -40°C to 85°C. Applications requiring operation above 85°C must use the original Lite-On part or verify thermal performance with alternative manufacturers.

Q: How do LED trigger current differences affect circuit design?

A: MOC3052S-TA and MOC3052SVM both specify 10mA maximum LED trigger current. MOC3051SR2VM specifies 15mA maximum, requiring higher input drive current. Existing circuits designed for 10mA operation remain compatible with MOC3051SR2VM but do not benefit from the higher specification.