FODM352R2 Equivalent & Substitute Parts

Part Overview

The FODM352R2 is an optoisolator with Darlington output manufactured by onsemi, designed for high-voltage isolation applications. This photodarlington opto device provides 3750Vrms isolation with a single channel configuration in a 4-MFP surface mount package. The part is currently active in production with 2296 units in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

FODM352R2

onsemiIn Stock: 2336FODM352R2 Datasheet

Current PartRFQ

FODM352R2

onsemiIn Stock: 2336FODM352R2 Datasheet

Parametric EquivalentRFQ

LTV-352T

Lite-On Inc.In Stock: 87172LTV-352T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FODM352R2 are identified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

• Voltage isolation rating: 3750Vrms
• Number of channels: 1
• Output type: Darlington
• Current transfer ratio minimum: 1000% @ 1mA
• Maximum output voltage: 300V
• Maximum output current per channel: 150mA
• Vce saturation maximum: 1.2V
• Operating temperature range: -55°C ~ 110°C
• Mounting type: Surface Mount
• Input type: DC

The LTV-352T from Lite-On Inc. meets all these electrical parameters. While the package designation differs (4-SOP versus 4-MFP), both are 4-pin surface mount configurations with identical pin functionality and gull wing lead geometry, making them mechanically compatible in standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

Both the FODM352R2 and LTV-352T are active production parts with full regulatory compliance. The FODM352R2 is manufactured by onsemi with 2296 units currently in stock. The LTV-352T is manufactured by Lite-On Inc. with 87100 units in stock, providing greater availability.

Selection between these parts should be based on:

• Supply chain availability and lead time requirements
• Preferred manufacturer qualification within your organization
• Packaging preference (4-MFP versus 4-SOP)
• Inventory management and procurement strategy

Both parts carry ROHS3 compliance, REACH unaffected status, and identical electrical performance specifications. The rise and fall time characteristics are equivalent, with values of 20µs and 100µs appearing in both datasheets.

Frequently Asked Questions (FAQ)

Q: Can the LTV-352T replace the FODM352R2 in existing designs?

A: Yes. Both parts meet identical electrical specifications for isolation voltage, current transfer ratio, output voltage and current ratings, and operating temperature range. The 4-pin surface mount package configurations are mechanically compatible.

Q: What is the difference between the 4-MFP and 4-SOP package designations?

A: Both designations refer to 4-pin surface mount packages with gull wing leads. The functional pin layout and electrical performance are identical. The package designation difference reflects manufacturer nomenclature conventions.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). Both are suitable for the same regulatory environments.

Q: What parameters must remain constant for substitution?

A: The critical parameters for substitution are: 3750Vrms isolation voltage, 1-channel configuration, Darlington output type, 1000% minimum current transfer ratio, 300V maximum output voltage, 150mA maximum output current, 1.2V maximum Vce saturation, and -55°C to 110°C operating temperature range.

Q: Which part should I select based on availability?

A: The LTV-352T offers significantly higher inventory (87100 units) compared to the FODM352R2 (2296 units). For applications requiring immediate availability or high-volume production, the LTV-352T may provide supply chain advantages.