FODM3053 Equivalent & Substitute Parts

Part Overview

The FODM3053 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 FODM3053 provides galvanic isolation in triac-switching applications with a single channel configuration in a 4-SMD surface mount package.

Substiute Parts

FODM3053

onsemiIn Stock: 1264FODM3053 Datasheet

Current PartRFQ

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

Substitute parts for the FODM3053 are qualified based on the following critical parameters that must match or exceed the original specification:

• Isolation voltage: 3750Vrms minimum
• Output type: Triac configuration
• Number of channels: 1
• Voltage - Off State: 600 V minimum
• Mounting type: Surface Mount
• Package configuration: 4-SMD format
• Operating temperature range: Must encompass or exceed -40°C ~ 100°C

The two identified substitutes, S2S3LA0F and S2S5A00F, both manufactured by SHARP/Socle Technology, meet these core electrical and mechanical requirements. Both parts are active products with current availability, addressing the obsolescence of the FODM3053.

Parameter Comparison

Engineering Selection Recommendations

Both S2S3LA0F and S2S5A00F are active products suitable for replacing the obsolete FODM3053. Selection between these two substitutes depends on specific application requirements:

S2S3LA0F is appropriate for applications where the lower operating temperature minimum of -30°C is acceptable and where the reduced current specifications (50 mA on-state current, 5 mA LED trigger current) align with circuit design parameters.

S2S5A00F is appropriate for applications requiring higher LED trigger current capability (10 mA maximum) and where the 4-Mini-Flat package variant is compatible with existing PCB layouts. This part offers higher static dV/dt performance (500V/µs) compared to S2S3LA0F (100V/µs).

Both substitute parts carry RoHS compliance certification, whereas the original FODM3053 RoHS status is not specified. Both are certified by CSA and UR approval agencies.

Frequently Asked Questions (FAQ)

Q: Can S2S3LA0F or S2S5A00F be used as direct replacements for FODM3053?

A: Both parts meet the core electrical specifications (3750Vrms isolation, 600V off-state voltage, triac output, single channel). However, the operating temperature minimum differs: FODM3053 operates to -40°C while both substitutes operate to -30°C. Confirm your application's minimum operating temperature requirement before selection.

Q: What is the difference between S2S3LA0F and S2S5A00F?

A: The primary differences are LED trigger current (S2S3LA0F: 5 mA max; S2S5A00F: 10 mA max), static dV/dt rating (S2S3LA0F: 100V/µs; S2S5A00F: 500V/µs), and packaging format (S2S3LA0F: standard 4-SMD; S2S5A00F: 4-Mini-Flat). Both have identical isolation voltage, off-state voltage, and on-state current ratings of 50 mA.

Q: Are there packaging compatibility considerations?

A: The FODM3053 uses 4-SMD Gull Wing packaging. S2S5A00F maintains this same package format. S2S3LA0F uses standard 4-SMD packaging, which may require PCB layout verification for pin alignment and spacing compatibility.

Q: What certifications apply to these substitute parts?

A: S2S3LA0F and S2S5A00F both carry CSA and UR certifications. The original FODM3053 includes BSI, CSA, and UL certifications. Confirm that the substitute part certifications meet your application's regulatory requirements.

Q: Are the substitute parts RoHS compliant?

A: Yes, both S2S3LA0F and S2S5A00F are RoHS compliant. The FODM3053 RoHS status is not specified in available documentation.