MOC8030300 Equivalent & Substitute Parts

Part Overview

The MOC8030300 is a 6-DIP optoisolator with Darlington output configuration, manufactured by onsemi. This component provides 5300Vrms isolation voltage with a 300% minimum current transfer ratio at 10mA input. The MOC8030300 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MOC8030300

onsemiIn Stock: 1134MOC8030300 Datasheet

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H11G2M

onsemiIn Stock: 2340H11G2M Datasheet

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MOC8050VM

onsemiIn Stock: 2831MOC8050VM Datasheet

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MOC8030

onsemiIn Stock: 1307MOC8030 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOC8030300 are identified based on the following critical parameters that determine functional equivalence:

Primary Compatibility Criteria:

• Package / Case: 6-DIP (0.300", 7.62mm) form factor
• Mounting Type: Through Hole
• Number of Channels: 1
• Input Type: DC
• Output Type: Darlington or Darlington with Base
• Voltage - Output (Max): 80V or greater
• Current - Output / Channel: 150mA or greater

Secondary Consideration:

• Voltage - Isolation: Minimum 4170Vrms (lower than MOC8030300's 5300Vrms but within acceptable substitution range for most applications)

The MOC8030300 can be substituted with active-status alternatives that maintain identical or superior electrical performance within the specified package constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MOC8050VM

The MOC8050VM is the preferred active-status substitute for the obsolete MOC8030300. Both components share identical package geometry (6-DIP), mounting type (Through Hole), and output specifications (80V maximum, 150mA per channel). The MOC8050VM features a 500% minimum current transfer ratio, exceeding the MOC8030300's 300% specification. The isolation voltage is reduced to 4170Vrms compared to the MOC8030300's 5300Vrms; this reduction is acceptable for applications where the lower isolation rating meets system requirements. The MOC8050VM carries ROHS3 compliance and is currently in active production status.

Secondary Recommendation: H11G2M

The H11G2M provides an alternative with enhanced current transfer ratio (1000% @ 10mA) and Darlington with Base output configuration. This part maintains the same 6-DIP package and 80V maximum output voltage. The H11G2M is suitable for applications requiring higher gain characteristics. Operating temperature range is -40°C to 100°C, which is narrower than the MOC8030300's -55°C to 100°C range. The H11G2M is ROHS3 compliant and in active production.

Compatibility Note for Lower Temperature Applications:

Applications requiring operation below -40°C should retain the MOC8030300 or MOC8030 due to their extended operating temperature range of -55°C to 100°C. The MOC8050VM and H11G2M are limited to -40°C minimum operating temperature.

Frequently Asked Questions (FAQ)

Q: Can MOC8050VM directly replace MOC8030300 in existing designs?

A: Yes, for applications where the 4170Vrms isolation voltage meets system requirements. Both components use identical 6-DIP packaging and share the same 80V maximum output voltage and 150mA output current specifications. Verify that your circuit design does not specifically require the MOC8030300's 5300Vrms isolation rating.

Q: What is the difference between MOC8050VM and H11G2M?

A: Both are active-status substitutes with 6-DIP packaging. The MOC8050VM has a 500% current transfer ratio and standard Darlington output. The H11G2M has a 1000% current transfer ratio and Darlington with Base output, providing higher gain. The H11G2M's Base connection allows external circuit control of the output transistor. Select based on your circuit's gain and control requirements.

Q: Why is isolation voltage different between MOC8030300 and MOC8050VM?

A: The MOC8030300 provides 5300Vrms isolation, while MOC8050VM provides 4170Vrms. Both are valid optoisolator designs with different isolation specifications. Select the part whose isolation rating matches or exceeds your system's isolation requirements.

Q: Are there temperature range limitations with substitute parts?

A: Yes. The MOC8050VM and H11G2M operate from -40°C to 100°C, while the MOC8030300 operates from -55°C to 100°C. For applications requiring operation below -40°C, the MOC8030300 or MOC8030 must be used.

Q: What does "Darlington with Base" mean in the H11G2M specification?

A: The H11G2M includes an accessible base connection on the output Darlington transistor, allowing external circuit connections to control or bias the output stage. The MOC8050VM and MOC8030300 have standard Darlington output without external base access.

Q: Are all substitute parts ROHS3 compliant?

A: The MOC8050VM and H11G2M are ROHS3 compliant. The MOC8030300 and MOC8030 do not list RoHS status in their specifications.