MOC3052TM Equivalent & Substitute Parts

Part Overview

The MOC3052TM is an optoisolator with triac output manufactured by onsemi, designed for applications requiring galvanic isolation with direct AC load switching capability. This component features 4170Vrms isolation voltage and is housed in a 6-DIP package. The MOC3052TM is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MOC3052TM

onsemiIn Stock: 928MOC3052TM Datasheet

Current PartRFQ

MOC3052TVM

Fairchild SemiconductorIn Stock: 23527MOC3052TVM Datasheet

DirectRFQ

IS3052

Isocom Components 2004 LTDIn Stock: 5369IS3052 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOC3052TM optoisolator are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

• Triac output configuration (single channel)
• Isolation voltage rating of 4170Vrms or higher
• Off-state voltage of 600V
• LED trigger current (Ift) maximum of 10mA
• Hold current (Ih) of 220µA typical or lower
• Forward voltage (Vf) of 1.18V typical or compatible
• DC forward current (If) maximum of 60mA or lower
• 6-DIP package form factor
• Static dV/dt minimum of 1kV/µs
• Operating temperature range encompassing -40°C to 85°C

Parts meeting these criteria are classified as direct equivalents. Parts with enhanced specifications (higher isolation voltage, extended temperature range, or improved compliance certifications) are classified as compatible substitutes.

Parameter Comparison

Engineering Selection Recommendations

MOC3052TVM (Fairchild Semiconductor) is the primary direct equivalent for MOC3052TM applications. This part maintains identical electrical specifications across all critical parameters including isolation voltage, off-state voltage, trigger current, hold current, forward voltage, and DC forward current. The MOC3052TVM is classified as active product status, ensuring continued availability and supply chain stability. This part carries UR and VDE approval agencies and is ROHS3 compliant, providing enhanced regulatory compliance compared to the obsolete MOC3052TM.

IS3052 (Isocom Components) functions as a compatible substitute with enhanced specifications. The IS3052 provides higher isolation voltage (5000Vrms versus 4170Vrms), extended operating temperature range (-40°C to 100°C versus -40°C to 85°C), and active product status. The IS3052 exhibits slightly lower hold current (200µA typical versus 220µA typical) and reduced DC forward current maximum (50mA versus 60mA), both favorable characteristics. However, the IS3052 package dimensions differ (0.300" versus 0.400" DIP height), requiring mechanical verification for PCB layout compatibility. The IS3052 carries UL and VDE approvals and is ROHS3 compliant.

Selection between MOC3052TVM and IS3052 depends on mechanical constraints and thermal requirements. For applications with standard PCB layouts designed for 0.400" DIP spacing, MOC3052TVM provides direct compatibility. For applications requiring extended temperature operation or higher isolation voltage margins, IS3052 is suitable provided PCB layout accommodates the 0.300" DIP package height.

Frequently Asked Questions (FAQ)

Q: Can MOC3052TVM directly replace MOC3052TM without circuit modifications?

A: Yes. MOC3052TVM maintains identical electrical specifications across all critical parameters: 4170Vrms isolation voltage, 600V off-state voltage, 10mA maximum LED trigger current, 220µA typical hold current, 1.18V typical forward voltage, and 60mA maximum DC forward current. Both components use 6-DIP (0.400", 10.16mm) packaging. No circuit modifications are required.

Q: What are the mechanical differences between MOC3052TVM and IS3052?

A: Both components use 6-DIP packaging but differ in height. MOC3052TVM uses 6-DIP (0.400", 10.16mm) spacing, while IS3052 uses 6-DIP (0.300", 7.62mm) spacing. This difference affects PCB layout compatibility. Verify PCB footprint and component clearance before substituting IS3052 for MOC3052TVM in existing designs.

Q: Is IS3052 suitable for applications originally designed for MOC3052TM?

A: IS3052 is electrically compatible with enhanced specifications: higher isolation voltage (5000Vrms), extended temperature range (-40°C to 100°C), and lower hold current (200µA typical). However, the package height difference (0.300" versus 0.400" DIP) requires mechanical verification. Confirm PCB layout accommodates the smaller package height before implementation.

Q: What compliance certifications should I verify for substitute parts?

A: MOC3052TVM carries UR and VDE approvals with ROHS3 compliance. IS3052 carries UL and VDE approvals with ROHS3 compliance. Both parts are REACH unaffected. Verify that selected substitute meets your application's specific regulatory requirements before final component selection.

Q: Why is MOC3052TM classified as obsolete?

A: MOC3052TM is listed as obsolete by onsemi. MOC3052TVM (Fairchild Semiconductor) and IS3052 (Isocom Components) are active products with ongoing manufacturing and supply availability, making them preferred choices for new designs and system support.