MOC3043SR2VM Equivalent & Substitute Parts

Part Overview

The MOC3043SR2VM is an optoisolator with triac output manufactured by onsemi, designed for applications requiring galvanic isolation in AC switching circuits. This component features a 4170Vrms isolation voltage rating and integrated zero-crossing detection, making it suitable for AC load control applications. The part is currently in active production status with substantial inventory availability (23,600 pcs). Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for this optoisolator category.

Substiute Parts

MOC3043SR2VM

onsemiIn Stock: 23640MOC3043SR2VM Datasheet

Current PartRFQ

VO3063-X017T

Vishay Semiconductor Opto DivisionIn Stock: 3383VO3063-X017T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC3043SR2VM is determined by the following critical parameters:

• Isolation Voltage Rating: Substitute parts must maintain isolation voltage at or above 4170Vrms to ensure equivalent safety margins in high-voltage isolation applications.
• Output Type: Triac output configuration is mandatory for AC switching compatibility.
• Zero Crossing Detection: Required for synchronized AC switching applications.
• Package Configuration: 6-SMD, Gull Wing surface mount package ensures mechanical and electrical compatibility with existing PCB layouts.
• Channel Count: Single-channel configuration must be preserved.
• Environmental Compliance: RoHS3 compliance and MSL Level 1 rating ensure regulatory and manufacturing process compatibility.

The VO3063-X017T from Vishay Semiconductor Opto Division qualifies as a substitute based on these parameters, offering enhanced electrical performance characteristics while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the MOC3043SR2VM and VO3063-X017T maintain active product status and full ROHS3 compliance. The VO3063-X017T provides enhanced isolation voltage (5300Vrms versus 4170Vrms) and extended operating temperature range (-55°C to 100°C versus -40°C to 85°C), offering greater design margin for demanding applications. The MOC3043SR2VM remains suitable for applications within its specified operating envelope. Both components carry equivalent regulatory approvals (IEC/EN/DIN, UL for MOC3043SR2VM; cUR, UR, VDE for VO3063-X017T) appropriate for their respective markets. Selection between these parts should be based on specific application voltage and temperature requirements, as well as supply chain availability and cost considerations.

Frequently Asked Questions (FAQ)

Q: Can the VO3063-X017T directly replace the MOC3043SR2VM in existing designs?

A: Yes, the VO3063-X017T is mechanically and functionally compatible as a substitute. Both components use identical 6-SMD, Gull Wing packaging and maintain the same channel count, output type, and zero-crossing functionality. The higher isolation voltage and extended temperature range of the VO3063-X017T provide additional design margin without requiring circuit modifications.

Q: What are the key differences between these two optoisolators?

A: The primary differences are isolation voltage rating (5300Vrms for VO3063-X017T versus 4170Vrms for MOC3043SR2VM), off-state voltage (600V versus 400V), static dV/dt rating (1.5kV/µs versus 1kV/µs), hold current (200µA versus 400µA typical), and operating temperature range (-55°C to 100°C versus -40°C to 85°C). These differences represent performance enhancements in the Vishay device.

Q: Are there any package or pinout differences?

A: No. Both components use identical 6-SMD, Gull Wing surface mount packaging with the same physical footprint and pin configuration, ensuring direct PCB compatibility.

Q: Do both parts meet the same regulatory standards?

A: Both components are ROHS3 compliant and carry MSL Level 1 rating. The MOC3043SR2VM holds IEC/EN/DIN and UL approvals, while the VO3063-X017T carries cUR, UR, and VDE approvals. Selection should consider the specific regulatory requirements of the target application and market.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. The VO3063-X017T is suitable when higher isolation voltage margin, extended temperature range, or improved dV/dt performance is beneficial. The MOC3043SR2VM remains appropriate for applications within its specified parameters where cost or supply availability is a primary consideration.