MOC3062FM Equivalent & Substitute Parts

Part Overview

The MOC3062FM is an optoisolator with triac output manufactured by onsemi, designed for high-voltage isolation applications. It features a 7500Vpk isolation rating, single-channel triac output with zero-crossing detection, and surface-mount 6-SMD packaging. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	MOC3062FM
Manufacturer	onsemi
Output Type	Triac
Zero Crossing Circuit	Yes
Number of Channels	1
Voltage - Isolation	7500Vpk
Voltage - Off State	600 V
Current - LED Trigger (Ift) (Max)	10mA
Current - Hold (Ih)	500µA (Typ)
Current - DC Forward (If) (Max)	60 mA
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the MOC3062FM is determined by the following critical parameters:

Output Type: Must be Triac
Zero Crossing Circuit: Must be present
Number of Channels: Must be 1
Voltage - Isolation: Minimum 7500Vpk (or equivalent RMS rating)
Voltage - Off State: 600 V
Current - LED Trigger (Ift): Maximum 10mA
Current - Hold (Ih): Typical 500µA or lower
Current - DC Forward (If): Maximum 60 mA
Mounting Type: Surface Mount preferred; Through Hole acceptable with design modification
Package / Case: 6-SMD preferred; 6-DIP acceptable with PCB redesign

The MOC3062FM operates at 7500Vpk isolation. Substitute parts with 5000Vrms isolation (approximately 7071Vpk) meet the isolation requirement. The MOC3062SM from onsemi provides the closest match with 4170Vrms isolation, which is below the original specification but remains within the same product family. Everlight and QT Brightek alternatives provide 5000Vrms isolation with compatible electrical characteristics but require package conversion from surface mount to through-hole.

Parameter Comparison

Parameter	MOC3062FM	MOC3062SM	EL3061	EL3062	EL3063	Q3062	Q3063
Manufacturer	onsemi	onsemi	Everlight	Everlight	Everlight	QT Brightek	QT Brightek
Output Type	Triac	Triac	Triac	Triac	Triac	Triac	Triac
Zero Crossing Circuit	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Number of Channels	1	1	1	1	1	1	1
Voltage - Isolation	7500Vpk	4170Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Voltage - Off State	600 V	600 V	600 V	600 V	600 V	600 V	600 V
Current - LED Trigger (Ift) (Max)	10mA	10mA	15mA	10mA	5mA	10mA	5mA
Current - Hold (Ih)	500µA (Typ)	500µA (Typ)	280µA (Typ)	280µA (Typ)	280µA (Typ)	280µA (Typ)	280µA (Typ)
Current - DC Forward (If) (Max)	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA	60 mA
Mounting Type	Surface Mount	Surface Mount	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)
Operating Temperature	Not specified	-40°C ~ 85°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute (Same Mounting): MOC3062SM from onsemi is the direct surface-mount replacement. It maintains the same manufacturer lineage, 6-SMD gull-wing package, and electrical interface. The isolation voltage is reduced to 4170Vrms, which represents a trade-off from the original 7500Vpk specification. This part is active and ROHS3 compliant with UL approval.

Alternative Substitutes (Package Conversion Required): EL3062 and Q3062 provide 5000Vrms isolation with matching LED trigger current (10mA) and hold current (280µA). Both are through-hole 6-DIP packages requiring PCB redesign. EL3062 offers CSA, DEMKO, FIMKO, NEMKO, SEMKO, and UL certifications. Q3062 carries UR and VDE approvals.

Lower Trigger Current Options: EL3063 and Q3063 feature reduced LED trigger current (5mA), which may reduce input circuit power requirements. Both maintain 5000Vrms isolation and 6-DIP through-hole packaging.

Selection should prioritize product status (all substitutes are active), compliance certifications relevant to the application, and package compatibility with existing PCB designs.

Frequently Asked Questions (FAQ)

Q: Can MOC3062SM directly replace MOC3062FM without PCB modification?

A: Yes. MOC3062SM uses identical 6-SMD gull-wing surface-mount packaging and pinout. The primary difference is reduced isolation voltage (4170Vrms vs. 7500Vpk). Verify that the application isolation requirement does not exceed 4170Vrms RMS.

Q: What is the isolation voltage difference between MOC3062FM and the Everlight/QT Brightek alternatives?

A: MOC3062FM specifies 7500Vpk isolation. Everlight EL3061, EL3062, EL3063 and QT Brightek Q3062, Q3063 specify 5000Vrms isolation, which equals approximately 7071Vpk. This represents a reduction of approximately 429Vpk from the original specification.

Q: Do through-hole 6-DIP packages require PCB redesign?

A: Yes. The MOC3062FM uses surface-mount 6-SMD packaging. Substituting with 6-DIP through-hole packages (EL3061, EL3062, EL3063, Q3062, Q3063) requires PCB layout modification, including hole drilling and trace routing changes.

Q: Which substitute has the lowest LED trigger current requirement?

A: EL3063 and Q3063 both specify 5mA maximum LED trigger current, compared to 10mA for MOC3062FM and MOC3062SM. This reduces input circuit power consumption.

Q: Are all substitute parts RoHS3 compliant?

A: MOC3062SM, EL3061, EL3062, EL3063, Q3062, and Q3063 are all ROHS3 compliant. The original MOC3062FM does not specify RoHS status.

Q: What certifications apply to each substitute?

A: MOC3062SM carries UL approval. Everlight parts (EL3061, EL3062, EL3063) carry CSA, DEMKO, FIMKO, NEMKO, SEMKO, and UL certifications. QT Brightek parts (Q3062, Q3063) carry UR and VDE approvals.

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