MOC8050300 Equivalent & Substitute Parts

Part Overview

The MOC8050300 is an optoisolator with Darlington output manufactured by onsemi, rated for 5300Vrms isolation voltage in a 6-DIP through-hole package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations. The MOC8050300 provides galvanic isolation for low-speed switching applications requiring high voltage isolation with Darlington output configuration.

Substiute Parts

MOC8050300

onsemiIn Stock: 864MOC8050300 Datasheet

Current PartRFQ

MOC8050VM

onsemiIn Stock: 2831MOC8050VM Datasheet

SimilarRFQ

MOC8050

onsemiIn Stock: 3945MOC8050 Datasheet

Parametric EquivalentRFQ

MOC8050

onsemiIn Stock: 3945MOC8050 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MOC8050300 are identified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

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

Secondary Compatibility Parameters:

• Current Transfer Ratio (Min): 500% @ 10mA
• Voltage - Forward (Vf) (Typ): 1.15V - 1.18V
• Current - DC Forward (If) (Max): 60mA

Substitutes are grouped into two categories: parametric equivalents (matching isolation voltage specification) and functional alternatives (meeting core electrical and mechanical requirements with different isolation ratings).

Parameter Comparison

Engineering Selection Recommendations

MOC8050VM is the primary active substitute for the MOC8050300. This part maintains identical electrical performance for output stage (150mA, 80V maximum), current transfer ratio (500% @ 10mA), and package configuration (6-DIP through-hole). The MOC8050VM is currently in active production status with ROHS3 compliance certification. The isolation voltage specification is reduced to 4170Vrms compared to the MOC8050300's 5300Vrms rating. Turn-on time is increased to 8.5µs versus 4.6µs. These differences must be evaluated against application requirements. The MOC8050VM is suitable for applications where the lower isolation voltage and slightly slower switching response are acceptable.

MOC8050 is a parametric equivalent offering identical isolation voltage (5300Vrms), switching times (4.6µs, 95µs), and forward voltage characteristics (1.15V typical). This part shares the same base product number and electrical specifications as the MOC8050300. The MOC8050 is also classified as obsolete. Packaging is specified as tube format rather than the original part's unspecified packaging.

Both substitute parts maintain the critical functional parameters: single-channel Darlington output, 6-DIP through-hole mounting, 150mA output current capability, and 80V maximum output voltage.

Frequently Asked Questions (FAQ)

Q: Can MOC8050VM directly replace MOC8050300 in existing designs?

A: MOC8050VM is mechanically and electrically compatible for the output stage and isolation function. However, the isolation voltage is reduced from 5300Vrms to 4170Vrms, and turn-on time increases from 4.6µs to 8.5µs. Substitution is valid only if the application requirements permit these parameter changes.

Q: What is the difference between MOC8050300 and MOC8050?

A: Both parts are parametric equivalents with identical electrical specifications: 5300Vrms isolation, 500% CTR @ 10mA, 4.6µs turn-on time, and 1.15V forward voltage. The primary difference is packaging format (tube versus unspecified). Both are obsolete products.

Q: Why is MOC8050VM the recommended active substitute?

A: MOC8050VM is the only substitute listed with active product status and current manufacturing availability. It maintains all critical output stage parameters and package configuration. The reduced isolation voltage and increased switching time are the only specification changes and must be evaluated for application compatibility.

Q: Are all substitutes pin-compatible with MOC8050300?

A: Yes. All substitute parts use the 6-DIP (0.300", 7.62mm) through-hole package with identical pinout configuration for single-channel Darlington output optoisolators.

Q: What compliance certifications apply to substitute parts?

A: MOC8050VM carries ROHS3 compliance certification. All parts are REACH Unaffected and classified under ECCN EAR99 for export control purposes.