FODM3052R2 Equivalent & Substitute Parts

Part Overview

The FODM3052R2 is a 3.75kV isolation optoisolator with triac output manufactured by onsemi. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part features single-channel triac output in a 4-SMD gull wing package, suitable for high-voltage isolation applications requiring galvanic separation.

Substiute Parts

FODM3052R2

onsemiIn Stock: 2634FODM3052R2 Datasheet

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S2S3LA0F

SHARP/Socle TechnologyIn Stock: 1498S2S3LA0F Datasheet

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S2S5A00F

SHARP/Socle TechnologyIn Stock: 27752S2S5A00F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the FODM3052R2 is based on the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

• Voltage - Isolation: 3750Vrms
• Voltage - Off State: 600 V
• Output Type: Triac
• Number of Channels: 1
• Mounting Type: Surface Mount
• Package / Case: 4-SMD configuration

Allowable Parameter Variations: Substitute parts may differ in static dV/dt rating, LED trigger current, on-state current, hold current, turn-on time, and operating temperature range, provided the core isolation voltage and triac output characteristics remain unchanged.

The identified substitute parts S2S3LA0F and S2S5A00F, both manufactured by SHARP/Socle Technology, meet the mandatory matching criteria and are classified as active products, making them suitable replacements for the obsolete FODM3052R2.

Parameter Comparison

Engineering Selection Recommendations

Both S2S3LA0F and S2S5A00F are active products from SHARP/Socle Technology and provide direct functional equivalence to the obsolete FODM3052R2 based on isolation voltage, off-state voltage, triac output configuration, and single-channel architecture.

S2S5A00F is the preferred substitute when package compatibility is critical, as it maintains the 4-SMD gull wing configuration identical to the original FODM3052R2. This part also offers superior static dV/dt performance at 500V/µs compared to S2S3LA0F at 100V/µs, and matches the original LED trigger current specification of 10mA maximum.

S2S3LA0F provides an alternative with lower LED trigger current requirement (5mA maximum) and is available in tape and reel packaging. This part may be suitable for applications where reduced input drive current is beneficial, though the lower static dV/dt rating of 100V/µs should be evaluated against circuit requirements.

Both substitute parts are RoHS compliant and carry CSA and UR certifications, meeting modern regulatory requirements. The operating temperature range for both substitutes is -30°C to 100°C, which is narrower than the original part's -40°C to 100°C range and should be considered for applications requiring extended low-temperature operation.

Frequently Asked Questions (FAQ)

Q: Can S2S5A00F directly replace FODM3052R2 without circuit modification?

A: S2S5A00F maintains electrical equivalence in isolation voltage (3750Vrms), off-state voltage (600V), triac output type, and single-channel configuration. The package format is identical (4-SMD gull wing). However, differences in static dV/dt, on-state current, and hold current specifications should be evaluated within the specific circuit application to confirm compatibility.

Q: What is the primary difference between S2S3LA0F and S2S5A00F?

A: The primary differences are static dV/dt rating (100V/µs versus 500V/µs), LED trigger current (5mA maximum versus 10mA maximum), packaging format (tape and reel versus cut tape and digi-reel), and package case designation (4-SMD versus 4-SMD gull wing). Both maintain identical isolation voltage and triac output specifications.

Q: Why is the operating temperature range different in the substitute parts?

A: The substitute parts from SHARP/Socle Technology specify an operating temperature range of -30°C to 100°C, compared to the original FODM3052R2 range of -40°C to 100°C. Applications requiring operation below -30°C must account for this specification difference.

Q: Are the substitute parts RoHS compliant?

A: Yes, both S2S3LA0F and S2S5A00F are RoHS compliant. The original FODM3052R2 RoHS status was not specified in the available data.

Q: What certifications do the substitute parts carry?

A: Both S2S3LA0F and S2S5A00F carry CSA and UR certifications. The original FODM3052R2 carried BSI, CSA, and UL certifications. Applications requiring specific certification compliance should verify alignment with system requirements.

Q: How do the on-state current specifications compare?

A: The FODM3052R2 specifies 70mA maximum on-state current, while both S2S3LA0F and S2S5A00F specify 50mA maximum. Circuits designed for the original 70mA specification should evaluate whether the 50mA limit of the substitutes is acceptable for the intended application.