MOC8020SD Equivalent & Substitute Parts

Part Overview

The MOC8020SD is an optoisolator with Darlington output manufactured by onsemi, featuring 5300Vrms isolation voltage and single-channel configuration in 6-SMD surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

MOC8020SD

onsemiIn Stock: 1156MOC8020SD Datasheet

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MOC8050SR2M

onsemiIn Stock: 12429MOC8050SR2M Datasheet

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MOC8050SR2VM

onsemiIn Stock: 2454MOC8050SR2VM Datasheet

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MOC8020SM

Isocom Components 2004 LTDIn Stock: 884MOC8020SM Datasheet

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MOC8020SMT&R

Isocom Components 2004 LTDIn Stock: 1155MOC8020SMT&R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC8020SD is determined by the following critical parameters:

• Isolation Voltage: Minimum 4170Vrms (MOC8050 series meets this requirement with lower isolation than the original 5300Vrms)
• Output Type: Darlington configuration required
• Number of Channels: Single channel
• Package / Case: 6-SMD, Gull Wing surface mount
• Current - Output / Channel: 150mA capability
• Mounting Type: Surface Mount

The MOC8050SR2M and MOC8050SR2VM are functionally equivalent active alternatives from onsemi with reduced isolation voltage but maintained Darlington output characteristics. The MOC8020SM and MOC8020SMT&R from Isocom Components 2004 LTD represent the same base series with different packaging configurations and isolation specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (onsemi MOC8050 Series): MOC8050SR2M and MOC8050SR2VM are active products from the original manufacturer with established supply chains. Both maintain Darlington output configuration, 150mA output current, and 6-SMD surface mount packaging. The MOC8050 series operates at 4170Vrms isolation, which is lower than the original 5300Vrms specification. These parts carry ROHS3 compliance certification and are suitable for applications where the reduced isolation voltage is acceptable within system design margins.

Alternative Substitutes (Isocom MOC8020 Series): MOC8020SM and MOC8020SMT&R represent the same base series from alternative manufacturer Isocom Components 2004 LTD. These parts maintain Darlington output and 6-SMD packaging but feature significantly different isolation voltage (7.5Vpk) and reduced maximum output voltage (35V). These alternatives are appropriate only for applications with lower isolation requirements and are available in tube and tape & reel packaging options.

Frequently Asked Questions (FAQ)

Q: Can MOC8050SR2M directly replace MOC8020SD in all applications? A: MOC8050SR2M maintains the same Darlington output type, 150mA output current, and 6-SMD surface mount package. The primary difference is reduced isolation voltage (4170Vrms versus 5300Vrms). Direct substitution is valid only if the application isolation requirements do not exceed 4170Vrms.

Q: What is the difference between MOC8050SR2M and MOC8050SR2VM? A: Both parts are functionally identical with identical electrical specifications. The difference is packaging format: MOC8050SR2M is supplied in Cut Tape (CT) & Digi-Reel format, while MOC8050SR2VM is also supplied in Cut Tape (CT) & Digi-Reel format. Inventory availability differs between the two variants.

Q: Why is the MOC8020SD classified as obsolete? A: The MOC8020SD is listed as obsolete by onsemi. The MOC8050 series represents the active product line continuation with similar functionality and improved compliance certifications (ROHS3).

Q: Are the Isocom MOC8020SM and MOC8020SMT&R suitable substitutes? A: These parts share the same base series designation and Darlington output configuration but feature substantially different isolation voltage specifications (7.5Vpk versus 5300Vrms). These are suitable only for applications with significantly lower isolation voltage requirements and should not be considered direct replacements for high-voltage isolation applications.

Q: What compliance certifications apply to substitute parts? A: MOC8050SR2M and MOC8050SR2VM carry ROHS3 compliance. MOC8020SM and MOC8020SMT&R also carry ROHS3 compliance. All parts maintain REACH Unaffected status and EAR99 ECCN classification. Moisture Sensitivity Level is 1 (Unlimited) across all variants.

Q: Does operating temperature range affect substitution decisions? A: MOC8020SD operates from -55°C to 100°C. MOC8050 series operates from -40°C to 100°C, and Isocom MOC8020 variants operate from -25°C to 100°C. Applications requiring operation below -40°C must retain the original MOC8020SD specification or identify alternative solutions.