MOC3023FR2M Optoisolator Equivalent & Substitute Parts

Part Overview

The MOC3023FR2M is a 7.5kV isolation optoisolator with triac output manufactured by onsemi in 6-SMD surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MOC3023FR2M serves applications requiring high-voltage isolation with triac switching capability in compact surface mount form factors.

Key Parameters

Parameter	MOC3023FR2M
Manufacturer	onsemi
Category	Optoisolators
Output Type	Triac
Number of Channels	1
Voltage - Isolation	7500Vpk
Voltage - Off State	400 V
Current - LED Trigger (Ift) (Max)	5mA
Current - Hold (Ih)	100µA (Typ)
Current - DC Forward (If) (Max)	60 mA
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution for the MOC3023FR2M is determined by the following critical parameters:

Primary Substitution Criteria:

Output Type: Triac (all substitutes must maintain triac output)
Number of Channels: 1 (single channel isolation)
Voltage - Isolation: Minimum 5000Vrms or equivalent peak voltage (7500Vpk reference)
Voltage - Off State: 400 V (standard across all candidates)
Current - LED Trigger (Ift): 5mA maximum (matching specification)
Current - Hold (Ih): 100µA typical (standard across candidates)
Current - DC Forward (If): 50-60 mA range acceptable

Packaging Consideration: The MOC3023FR2M uses 6-SMD surface mount packaging. Substitutes include both surface mount (MOC3023SR2M) and through-hole DIP variants (EL3021, EL3022, EL3023, IS3020G, IS3021G, IS3022G, MOC3020, MOC3021, MOC3022). Through-hole substitutes require board redesign but maintain electrical compatibility.

Product Status Impact: The MOC3023FR2M is obsolete. Active alternatives include MOC3023SR2M (onsemi), EL3021/EL3022/EL3023 (Everlight), and IS3020G/IS3021G/IS3022G (Isocom). Obsolete alternatives include MOC3020, MOC3021, and MOC3022 (onsemi).

Parameter Comparison

Part Number	Manufacturer	Voltage - Isolation	Current - LED Trigger (Ift) (Max)	Current - Hold (Ih)	Current - DC Forward (If) (Max)	Mounting Type	Package / Case	Product Status	Operating Temperature
MOC3023FR2M	onsemi	7500Vpk	5mA	100µA (Typ)	60 mA	Surface Mount	6-SMD, Gull Wing	Obsolete	-
MOC3023SR2M	onsemi	4170Vrms	5mA	100µA (Typ)	60 mA	Surface Mount	6-SMD, Gull Wing	Active	-40°C ~ 85°C
EL3021	Everlight Electronics Co Ltd	5000Vrms	15mA	250µA (Typ)	60 mA	Through Hole	6-DIP (0.300", 7.62mm)	Active	-55°C ~ 100°C
EL3022	Everlight Electronics Co Ltd	5000Vrms	10mA	250µA (Typ)	60 mA	Through Hole	6-DIP (0.300", 7.62mm)	Active	-55°C ~ 100°C
EL3023	Everlight Electronics Co Ltd	5000Vrms	5mA	250µA (Typ)	60 mA	Through Hole	6-DIP (0.300", 7.62mm)	Active	-55°C ~ 100°C
IS3020G	Isocom Components 2004 LTD	5300Vrms	30mA	100µA (Typ)	50 mA	Through Hole	6-DIP (0.400", 10.16mm)	Active	-40°C ~ 100°C
IS3021G	Isocom Components 2004 LTD	5300Vrms	15mA	100µA (Typ)	50 mA	Through Hole	6-DIP (0.400", 10.16mm)	Active	-40°C ~ 100°C
IS3022G	Isocom Components 2004 LTD	5300Vrms	10mA	100µA (Typ)	50 mA	Through Hole	6-DIP (0.400", 10.16mm)	Active	-40°C ~ 100°C
MOC3020	onsemi	5300Vrms	30mA	100µA	50 mA	Through Hole	6-DIP (0.300", 7.62mm)	Obsolete	-
MOC3021	onsemi	5300Vrms	15mA	100µA	50 mA	Through Hole	6-DIP (0.300", 7.62mm)	Obsolete	-
MOC3022	onsemi	5300Vrms	10mA	100µA	50 mA	Through Hole	6-DIP (0.300", 7.62mm)	Obsolete	-

Engineering Selection Recommendations

For Surface Mount Applications (Direct Replacement): MOC3023SR2M is the active surface mount alternative from onsemi. It maintains the same 6-SMD gull wing package and meets the 5mA LED trigger current specification. The isolation voltage is 4170Vrms, which is lower than the original 7500Vpk but remains within acceptable triac optoisolator specifications. This part carries UL approval and is RoHS3 compliant.

For Through-Hole Applications (Package Redesign Required): EL3023 (Everlight) is the closest electrical match with 5mA LED trigger current and 5000Vrms isolation. It is RoHS3 compliant with CSA, DEMKO, FIMKO, NEMKO, SEMKO, and UL approvals. Operating temperature range extends to -55°C ~ 100°C.

IS3022G (Isocom) provides 5300Vrms isolation with 10mA LED trigger current and RoHS3 compliance. Operating temperature range is -40°C ~ 100°C.

MOC3021 (onsemi, obsolete) offers 5300Vrms isolation with 15mA LED trigger current in 6-DIP through-hole package, maintaining onsemi sourcing continuity for legacy designs.

Compliance Considerations: All active substitutes carry RoHS3 compliance. Everlight and Isocom parts include multiple international approvals (UL, CSA, DEMKO, FIMKO, NEMKO, SEMKO). All parts maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can MOC3023SR2M directly replace MOC3023FR2M without board changes? A: Yes. MOC3023SR2M uses identical 6-SMD gull wing surface mount packaging and maintains the same 5mA LED trigger current specification. The isolation voltage is lower (4170Vrms vs 7500Vpk), but both meet standard triac optoisolator isolation requirements. Verify your application does not require the higher isolation voltage before substitution.

Q: What is the difference between the EL3021, EL3022, and EL3023 variants? A: These Everlight parts differ only in LED trigger current specification: EL3021 requires 15mA maximum, EL3022 requires 10mA maximum, and EL3023 requires 5mA maximum. All three provide 5000Vrms isolation, 6-DIP through-hole packaging, and identical hold current (250µA typical). Select based on your circuit's LED drive current capability.

Q: Why do Isocom IS3020G, IS3021G, and IS3022G use different DIP package dimensions? A: Isocom parts use 6-DIP (0.400", 10.16mm) spacing, while onsemi and Everlight DIP variants use 6-DIP (0.300", 7.62mm) spacing. This difference requires board layout verification before substitution. Electrical specifications remain compatible.

Q: Are obsolete parts (MOC3020, MOC3021, MOC3022) acceptable for new designs? A: Obsolete parts are not recommended for new designs. Use active alternatives: MOC3023SR2M for surface mount, or EL3023/IS3022G for through-hole applications. Obsolete parts are listed for reference only in legacy design updates.

Q: What is the isolation voltage difference between 7500Vpk and 4170Vrms? A: Peak voltage (Vpk) and RMS voltage (Vrms) represent different measurement standards. 7500Vpk approximately equals 5300Vrms. MOC3023SR2M at 4170Vrms is lower but remains within standard triac optoisolator isolation specifications. Confirm your application's isolation voltage requirement before substitution.

Q: Do all substitutes maintain the same hold current (Ih) specification? A: No. MOC3023FR2M specifies 100µA typical hold current. Everlight parts (EL3021, EL3022, EL3023) specify 250µA typical, which is higher. Isocom and onsemi DIP variants maintain 100µA. Verify your circuit design accommodates the hold current specification of your selected substitute.

Q: Which substitute offers the widest operating temperature range? A: Everlight EL3021, EL3022, and EL3023 offer -55°C ~ 100°C operating temperature range, the widest among all substitutes. MOC3023FR2M does not specify operating temperature. Isocom and active onsemi parts specify -40°C ~ 100°C.

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