MOC119M Equivalent & Substitute Parts

Part Overview

The MOC119M is a high-voltage optoisolator with Darlington output manufactured by onsemi, designed for applications requiring galvanic isolation up to 5300Vrms. This component features a single channel configuration in a 6-DIP through-hole package with a maximum output current of 150mA per channel.

The MOC119M is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

MOC119M

onsemiIn Stock: 5375MOC119M Datasheet

Current PartRFQ

MOC8050M

onsemiIn Stock: 1721MOC8050M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MOC119M is determined by the following critical parameters:

• Package compatibility: 6-DIP (0.300", 7.62mm) through-hole mounting
• Output configuration: Darlington output type with single channel
• Output current capability: 150mA per channel minimum
• Isolation voltage: Minimum 4170Vrms (acceptable reduction from 5300Vrms for most applications)
• Input type: DC input
• Operating temperature range: Must support -40°C minimum or better

The MOC8050M meets these substitution criteria. While it provides lower isolation voltage (4170Vrms versus 5300Vrms), it maintains identical package geometry, output current rating, and Darlington configuration. The MOC8050M is currently in active production status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

The MOC8050M is the designated substitute for the obsolete MOC119M based on the following factors:

Compliance and Production Status: The MOC8050M is in active production with ROHS3 compliance certification, whereas the MOC119M is obsolete. This ensures long-term component availability and supply chain continuity.

Electrical Compatibility: Both components share identical package geometry (6-DIP), output current rating (150mA), and Darlington output configuration. The MOC8050M provides higher current transfer ratio (500% versus 300%), which improves switching performance.

Isolation Voltage Consideration: The MOC8050M provides 4170Vrms isolation versus the MOC119M's 5300Vrms. This represents a 21% reduction in isolation voltage. Selection of the MOC8050M is appropriate for applications where the lower isolation voltage meets system requirements.

Temperature Range Trade-off: The MOC119M operates from -55°C to 100°C, while the MOC8050M operates from -40°C to 100°C. Applications requiring operation below -40°C cannot use the MOC8050M as a direct substitute.

Output Voltage Rating: The MOC8050M supports higher maximum output voltage (80V versus 30V), providing greater design flexibility for higher-voltage switching applications.

Frequently Asked Questions (FAQ)

Q: Can the MOC8050M directly replace the MOC119M in existing designs?

A: Direct replacement is possible if the application isolation voltage requirement does not exceed 4170Vrms and the operating temperature range does not go below -40°C. The identical 6-DIP package and 150mA output current rating ensure mechanical and electrical compatibility at the pin level.

Q: What is the primary difference between these two components?

A: The main differences are isolation voltage (5300Vrms for MOC119M versus 4170Vrms for MOC8050M), product status (obsolete versus active), and operating temperature range (-55°C to 100°C versus -40°C to 100°C). The MOC8050M offers superior current transfer ratio and higher output voltage rating.

Q: Is the MOC8050M suitable for high-isolation applications?

A: The MOC8050M provides 4170Vrms isolation, which is suitable for most industrial and consumer applications. Applications specifically requiring 5300Vrms isolation or higher must evaluate alternative components outside this substitution group.

Q: Are there any timing differences between these components?

A: Yes. The MOC119M has a turn-on time of 4.6µs, while the MOC8050M has a turn-on time of 8.5µs. Both share identical turn-off time of 95µs. Applications with strict timing requirements below 8.5µs turn-on must verify compatibility with the MOC8050M.

Q: What certifications apply to the MOC8050M?

A: The MOC8050M is ROHS3 compliant and REACH unaffected. Both components carry EAR99 export classification and HTSUS code 8541.49.8000.