MOC208R2M Equivalent & Substitute Parts

Part Overview

The MOC208R2M is an optoisolator transistor with base output rated for 2500Vrms isolation voltage in an 8-SOIC surface mount package. This component is currently obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The part provides DC input with transistor output including base connection, supporting applications requiring galvanic isolation with moderate voltage ratings and switching speeds.

Substiute Parts

MOC208R2M

onsemiIn Stock: 4257MOC208R2M Datasheet

Current PartRFQ

MOC206R2M

Fairchild SemiconductorIn Stock: 5116MOC206R2M Datasheet

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MOC207R2M

onsemiIn Stock: 32168MOC207R2M 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 eligibility for the MOC208R2M is determined by the following critical parameters:

• Isolation Voltage: Minimum 2500Vrms required to maintain equivalent isolation performance
• Output Configuration: Transistor with base output mandatory for circuit compatibility
• Package Type: 8-SOIC surface mount package required for PCB layout compatibility
• Number of Channels: Single channel configuration
• Input Type: DC input required
• Output Current Capability: Minimum 150mA per channel
• Operating Temperature Range: Must support -40°C to 100°C minimum

Substitute parts are grouped into two categories based on isolation voltage capability:

Category A - Direct Isolation Voltage Match (2500Vrms): MOC206R2M and MOC207R2M maintain the same isolation voltage rating as the original part.

Category B - Enhanced Isolation Voltage (4000Vrms): IL215AT and IL216AT provide higher isolation voltage ratings, suitable for applications requiring greater isolation margins or operating in higher voltage environments.

Parameter Comparison

Engineering Selection Recommendations

MOC207R2M is the primary recommended substitute for the obsolete MOC208R2M. Both parts are manufactured by onsemi with identical isolation voltage (2500Vrms), package configuration, and output specifications. MOC207R2M is currently in active production status with significantly higher inventory availability (32,100 pcs). The part carries RoHS3 compliance certification and REACH unaffected status. Current transfer ratio performance is superior (100-200% @ 10mA versus 40-125% @ 10mA), providing improved switching characteristics.

MOC206R2M by Fairchild Semiconductor serves as a secondary substitute option, maintaining 2500Vrms isolation voltage and identical package specifications. This part is in active production status. The current transfer ratio minimum is higher (63% @ 10mA) compared to the original part, though maximum rating remains equivalent at 125% @ 10mA.

IL215AT and IL216AT by Vishay Semiconductor Opto Division are suitable for applications requiring enhanced isolation voltage margins. Both parts provide 4000Vrms isolation rating in the same 8-SOIC package. IL216AT offers superior current transfer ratio performance (50% @ 1mA minimum) compared to IL215AT (20% @ 1mA minimum). Both parts support extended operating temperature range (-55°C to 100°C) and carry RoHS3 compliance. These substitutes are appropriate when system design permits higher isolation voltage specifications or when operating in demanding thermal environments.

Frequently Asked Questions (FAQ)

Q: Can MOC207R2M directly replace MOC208R2M without circuit modifications?

A: Yes. MOC207R2M maintains identical isolation voltage (2500Vrms), package type (8-SOIC), output configuration (transistor with base), and current rating (150mA). Pin-to-pin compatibility is preserved. The superior current transfer ratio (100-200% @ 10mA) may improve circuit performance without requiring design changes.

Q: What is the key difference between MOC206R2M and MOC207R2M?

A: Both parts maintain 2500Vrms isolation and identical package specifications. MOC207R2M provides higher current transfer ratio performance (100-200% @ 10mA versus 63-125% @ 10mA for MOC206R2M), resulting in faster switching response and improved noise margins. MOC207R2M is recommended as the primary choice due to superior electrical characteristics and higher production inventory.

Q: Are IL215AT and IL216AT compatible with circuits designed for MOC208R2M?

A: IL215AT and IL216AT are mechanically and functionally compatible in the 8-SOIC package with transistor base output configuration. The primary difference is enhanced isolation voltage (4000Vrms versus 2500Vrms). These parts are suitable substitutes when system design permits higher isolation ratings. Note that current transfer ratio specifications are measured at different input current levels (1mA versus 10mA), requiring verification against specific circuit requirements.

Q: Why is the maximum output voltage different between MOC208R2M (70V) and substitute parts (30V)?

A: The MOC208R2M specification lists 70V maximum output voltage, while MOC206R2M, MOC207R2M, IL215AT, and IL216AT are rated for 30V maximum output voltage. Applications requiring output voltages exceeding 30V cannot use the listed substitute parts. Verify circuit operating conditions before substitution.

Q: What compliance certifications should I verify for production use?

A: MOC207R2M carries RoHS3 compliance and REACH unaffected status. IL215AT and IL216AT also provide RoHS3 compliance and REACH unaffected status. MOC206R2M compliance information is not specified in available data. Verify compliance requirements against your specific application and regional regulations before final part selection.

Q: Is the 8-SOIC package identical across all substitute parts?

A: Yes. All substitute parts use the 8-SOIC package with 0.154" (3.90mm) width specification. PCB footprint and reflow soldering profiles are compatible across all listed parts. No layout modifications are required for package substitution.