FODM3053V Optoisolator Equivalent & Substitute Parts

Part Overview

The FODM3053V is a 3.75kV isolation optoisolator with triac output manufactured by onsemi. This component is designed for applications requiring galvanic isolation in AC switching circuits. The device features a single channel with triac output capability and is packaged in a 4-SMD surface mount configuration.

The FODM3053V is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

FODM3053V

onsemiIn Stock: 815FODM3053V Datasheet

Current PartRFQ

S2S3LA0F

SHARP/Socle TechnologyIn Stock: 1498S2S3LA0F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the FODM3053V is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Isolation: 3750Vrms (primary isolation specification)
• Output Type: Triac (functional requirement for AC switching)
• Number of Channels: 1 (circuit architecture requirement)
• Voltage - Off State: 600 V (maximum blocking voltage)
• Current - LED Trigger (Ift): 5mA maximum (input drive requirement)

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount
• Package / Case: 4-SMD configuration
• Pin count and footprint compatibility

The substitute part S2S3LA0F meets these core substitution criteria. Both components share identical isolation voltage, triac output topology, single-channel configuration, and 4-SMD surface mount packaging. Differences in secondary parameters (dV/dt rating, on-state current, hold current, and temperature range) must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The S2S3LA0F is a direct functional substitute for the obsolete FODM3053V based on matching isolation voltage, triac output topology, channel count, and surface mount 4-SMD packaging.

Product Status Advantage: The S2S3LA0F carries Active product status, ensuring ongoing availability and supply chain support compared to the obsolete FODM3053V.

Compliance Considerations: The FODM3053V holds approvals from BSI, CSA, UL, and VDE. The S2S3LA0F holds CSA and UR approvals. Applications requiring specific regulatory certifications must verify that S2S3LA0F certifications satisfy design and market requirements.

RoHS Compliance: The S2S3LA0F is RoHS Compliant, whereas RoHS status for FODM3053V is not specified in available data.

Parameter Deviations: The S2S3LA0F exhibits lower static dV/dt rating (100V/µs versus 1kV/µs), reduced on-state current capability (50 mA versus 70 mA), higher hold current (4.6mA versus 300µA typical), and narrower operating temperature range (-30°C to 100°C versus -40°C to 100°C). These differences must be evaluated against application-specific performance requirements.

Frequently Asked Questions (FAQ)

Q: Can S2S3LA0F directly replace FODM3053V in existing designs?

A: Both components share identical isolation voltage (3750Vrms), triac output configuration, single-channel topology, and 4-SMD surface mount packaging. Direct mechanical and electrical substitution is possible. However, differences in dV/dt rating, on-state current, hold current, and temperature range must be verified against circuit requirements and application operating conditions.

Q: What are the key differences between these parts?

A: Primary differences include static dV/dt (FODM3053V: 1kV/µs; S2S3LA0F: 100V/µs), on-state current (FODM3053V: 70 mA max; S2S3LA0F: 50 mA max), hold current (FODM3053V: 300µA typical; S2S3LA0F: 4.6mA), operating temperature range (FODM3053V: -40°C to 100°C; S2S3LA0F: -30°C to 100°C), and regulatory approvals.

Q: Are the packages mechanically compatible?

A: Both components use 4-SMD surface mount packaging. The FODM3053V specifies Gull Wing leads, while S2S3LA0F specifies standard 4-SMD configuration. Footprint compatibility should be confirmed with component datasheets before PCB layout finalization.

Q: What certifications does each part carry?

A: FODM3053V holds BSI, CSA, UL, and VDE approvals. S2S3LA0F holds CSA and UR approvals. Applications with specific regulatory requirements must verify certification alignment with design standards and market regulations.

Q: Is S2S3LA0F RoHS compliant?

A: Yes, S2S3LA0F is RoHS Compliant. RoHS status for FODM3053V is not specified in available documentation.

Q: What is the minimum operating temperature for each part?

A: FODM3053V operates from -40°C to 100°C. S2S3LA0F operates from -30°C to 100°C. Applications requiring operation below -30°C must use FODM3053V or identify alternative components with extended low-temperature ratings.