MOC3052M Optoisolator - Equivalent & Substitute Parts

Part Overview

The MOC3052M is an optoisolator with triac output, rated for 5000Vrms isolation voltage, designed for single-channel applications requiring galvanic isolation in through-hole 6-DIP packaging. This component is actively manufactured by LITEON and maintains ROHS3 compliance. Substitute parts may be required due to inventory constraints, regional availability, or specific application requirements where alternative electrical parameters remain within acceptable operating ranges.

Substiute Parts

MOC3052M

LITEONIn Stock: 29299MOC3052M Datasheet

Current PartRFQ

MOC3051TVM

onsemiIn Stock: 2323MOC3051TVM Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The MOC3051TVM (onsemi) qualifies as a substitute for the MOC3052M based on the following alignment criteria:

Matching Parameters:

• Output Type: Triac (both single-channel)
• Voltage - Off State: 600V (identical)
• Static dV/dt (Min): 1kV/µs (identical)
• Mounting Type: Through Hole (identical)
• Package / Case: 6-DIP (0.400", 10.16mm) (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Product Status: Active (both actively manufactured)
• Base Product Number: MOC305 (same series)

Allowable Parameter Variations:

• Voltage - Isolation: 4170Vrms (MOC3051TVM) vs. 5000Vrms (MOC3052M) — lower isolation rating acceptable for applications not requiring maximum isolation specification
• Current - LED Trigger (Ift) (Max): 15mA (MOC3051TVM) vs. 10mA (MOC3052M) — higher trigger current acceptable where driver capability exists
• Current - Hold (Ih) (Typ): 220µA (MOC3051TVM) vs. 400µA (MOC3052M) — lower hold current acceptable
• Voltage - Forward (Vf) (Typ): 1.18V (MOC3051TVM) vs. 1.2V (MOC3052M) — negligible difference
• Current - DC Forward (If) (Max): 60mA (MOC3051TVM) vs. 50mA (MOC3052M) — higher forward current acceptable
• Operating Temperature Range: -40°C to 85°C (MOC3051TVM) vs. -40°C to 100°C (MOC3052M) — narrower range acceptable for standard industrial applications

Parameter Comparison

Engineering Selection Recommendations

MOC3052M (LITEON) — Primary selection for applications requiring maximum isolation voltage (5000Vrms) and extended operating temperature range to 100°C. Maintains active production status with established supply chain.

MOC3051TVM (onsemi) — Acceptable substitute where isolation voltage of 4170Vrms meets application requirements and operating temperature does not exceed 85°C. Verify that the driver circuit can supply the higher LED trigger current (15mA maximum). Both components carry equivalent regulatory compliance (ROHS3) with different certification bodies (onsemi: UR, VDE; LITEON: CSA, FIMKO, UL). Direct pin-compatible replacement in 6-DIP through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can MOC3051TVM replace MOC3052M in all applications?

A: No. The MOC3051TVM has a lower isolation voltage rating (4170Vrms vs. 5000Vrms). Use MOC3051TVM only in applications where the lower isolation specification is acceptable. Additionally, verify that your driver circuit can supply 15mA LED trigger current (vs. 10mA for MOC3052M).

Q: Are the packages identical?

A: Yes. Both components use 6-DIP (0.400", 10.16mm) through-hole packaging and are direct pin-compatible for PCB replacement.

Q: What is the temperature difference impact?

A: MOC3052M operates to 100°C; MOC3051TVM to 85°C. For applications operating above 85°C, MOC3052M is required. For standard industrial applications (≤85°C), both are equivalent.

Q: Do the certifications differ?

A: Yes. MOC3052M carries CSA, FIMKO, and UL approvals; MOC3051TVM carries UR and VDE approvals. Both meet ROHS3 compliance. Select based on your regional certification requirements.

Q: What is the LED trigger current difference?

A: MOC3052M requires maximum 10mA; MOC3051TVM requires maximum 15mA. Ensure your driver circuit can supply the higher current for MOC3051TVM operation.

Q: Are both components actively manufactured?

A: Yes. Both MOC3052M and MOC3051TVM maintain active production status.