MOC205VM Equivalent & Substitute Parts

Part Overview

The MOC205VM is an optoisolator transistor with base output manufactured by onsemi, rated for 2500Vrms isolation voltage in an 8-SOIC surface mount package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part provides galvanic isolation with a single transistor output channel suitable for DC input applications requiring moderate isolation ratings and switching speeds.

Substiute Parts

MOC205VM

onsemiIn Stock: 836MOC205VM Datasheet

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IL215AT

Vishay Semiconductor Opto DivisionIn Stock: 1679IL215AT Datasheet

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IL216AT

Vishay Semiconductor Opto DivisionIn Stock: 1472IL216AT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the MOC205VM is determined by the following critical parameters:

• Package Compatibility: Both substitute parts maintain the 8-SOIC (0.154", 3.90mm Width) surface mount package, ensuring mechanical and electrical PCB compatibility.
• Output Configuration: All parts feature transistor output with base connection, maintaining circuit topology compatibility.
• Isolation Voltage: Substitute parts IL215AT and IL216AT provide 4000Vrms isolation, exceeding the MOC205VM requirement of 2500Vrms, ensuring functional equivalence with enhanced isolation margin.
• Maximum Output Voltage and Saturation: All parts share 30V maximum output voltage and 400mV Vce saturation specifications.
• Input Type: All parts accept DC input signals.
• Mounting and MSL: Surface mount configuration and MSL 1 (Unlimited) moisture sensitivity are consistent across all parts.

The IL215AT and IL216AT differ primarily in Current Transfer Ratio specifications and product status (both active versus obsolete), but both satisfy the electrical requirements for direct substitution in applications previously using the MOC205VM.

Parameter Comparison

Engineering Selection Recommendations

Both IL215AT and IL216AT are suitable substitutes for the obsolete MOC205VM based on the following factors:

Product Status: The IL215AT and IL216AT are active products with ongoing manufacturer support, addressing the obsolescence of the MOC205VM. This ensures long-term availability and supply chain stability for new designs and production continuity.

Compliance and Certifications: Both Vishay substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements. The MOC205VM compliance status is not specified, making the active substitutes preferable for applications requiring documented regulatory compliance.

Electrical Compatibility: The 4000Vrms isolation rating of both substitutes exceeds the MOC205VM requirement, providing enhanced isolation margin without circuit modification. All critical electrical parameters—maximum output voltage, saturation voltage, forward current, and package configuration—are identical or compatible.

Temperature Range: Both substitutes extend the operating temperature range to -55°C ~ 100°C compared to the MOC205VM range of -40°C ~ 100°C, providing broader operational capability.

Switching Performance: The IL215AT and IL216AT offer faster switching times (3µs turn-on/off versus 7.5µs/5.7µs), which may improve system performance in time-sensitive applications.

Selection Between IL215AT and IL216AT: The IL216AT provides a higher minimum Current Transfer Ratio (50% @ 1mA) compared to IL215AT (20% @ 1mA), offering better gain consistency. For applications requiring predictable current transfer characteristics, IL216AT is the preferred choice. IL215AT is suitable where lower current transfer ratio specifications are acceptable.

Frequently Asked Questions (FAQ)

Q: Can IL215AT or IL216AT be used as direct replacements for MOC205VM without circuit modifications?

A: Yes. Both substitutes maintain identical package geometry (8-SOIC), output configuration (transistor with base), maximum output voltage (30V), and saturation voltage (400mV). The higher isolation voltage (4000Vrms versus 2500Vrms) is a functional enhancement requiring no circuit changes.

Q: What is the difference between IL215AT and IL216AT?

A: The primary difference is the minimum Current Transfer Ratio specification. IL216AT specifies 50% @ 1mA, while IL215AT specifies 20% @ 1mA. Both parts share identical isolation voltage, package, output voltage, and saturation characteristics. IL216AT is preferred for applications requiring higher and more consistent current transfer gain.

Q: Are the substitute parts available in the same packaging options as MOC205VM?

A: IL215AT is supplied in Tape & Reel (TR) packaging, while IL216AT is supplied in Cut Tape (CT) & Digi-Reel® packaging. Both maintain the same 8-SOIC component package. Packaging format selection depends on assembly process requirements rather than electrical compatibility.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both IL215AT and IL216AT are ROHS3 compliant and carry EAR99 ECCN classification, matching the MOC205VM export control status. Both parts have MSL 1 (Unlimited) moisture sensitivity rating, eliminating bake-out requirements.

Q: How do the switching speeds compare?

A: The IL215AT and IL216AT offer faster switching performance with 3µs typical turn-on and turn-off times compared to the MOC205VM specifications of 7.5µs turn-on and 5.7µs turn-off. This faster response may improve system performance in high-frequency switching applications.

Q: What is the inventory status of these substitutes?

A: IL215AT has 1623 pieces in stock, and IL216AT has 1460 pieces in stock, both as new original components. The MOC205VM has 756 pieces available but is classified as obsolete.