Equivalent & Substitute Parts for Tamura 3FS-524 Laminated Power Transformer

Part Overview

The Tamura 3FS-524 is a 12VA laminated core power transformer with single primary and dual secondary windings, designed for through-hole mounting applications. The transformer provides 115V primary input with configurable secondary output of 12V parallel or 24V series, delivering maximum output currents of 1A parallel or 500mA series respectively. This Active product is RoHS Compliant and maintains 2500Vrms isolation voltage rating. Equivalent substitute parts are identified when design requirements necessitate alternative sourcing, inventory optimization, or manufacturer preference changes while maintaining identical electrical and mechanical specifications.

Substiute Parts

3FS-524

TamuraIn Stock: 11993FS-524 Datasheet

Current PartRFQ

ST-5-24

Signal TransformerIn Stock: 884ST-5-24 Datasheet

DirectRFQ

F24-500

Triad MagneticsIn Stock: 1302F24-500 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Tamura 3FS-524 are classified based on strict electrical and mechanical parameter equivalence. The substitution criteria are defined by the following mandatory parameters:

Electrical Equivalence Requirements:

• Primary voltage: 115V
• Secondary voltage configuration: Parallel 12V / Series 24V
• Output current capacity: Parallel 1A / Series 500mA
• Power rating: 12VA
• Isolation voltage: 2500Vrms
• Winding configuration: Single primary, dual secondary, no center tap

Mechanical Equivalence Requirements:

• Core type: Laminated
• Mounting type: Through hole
• Termination style: PC pin
• Physical dimensions within tolerance range
• Height seated maximum: 36.50mm to 38.00mm

Compliance Requirements:

• Product status: Active
• RoHS compliance: RoHS3 or equivalent
• ECCN classification: EAR99
• HTSUS code: 8504.31.4035

Parts meeting all three requirement categories are classified as Direct equivalents. Parts meeting electrical and compliance requirements with minor dimensional variations are classified as Similar equivalents.

Parameter Comparison

Engineering Selection Recommendations

Signal Transformer ST-5-24 (Direct Equivalent)

The ST-5-24 meets all electrical and mechanical substitution criteria for the Tamura 3FS-524. Dimensional variations are within acceptable tolerance ranges: length reduction of 0.70mm, width reduction of 1.92mm, and height reduction of 1.10mm. Both parts maintain identical electrical specifications and isolation voltage ratings. The ST-5-24 carries ROHS3 Compliant status and Active product status, ensuring regulatory alignment and long-term availability. This part is suitable for direct substitution in applications where the Tamura 3FS-524 is specified.

Triad Magnetics F24-500 (Similar Equivalent)

The F24-500 satisfies all electrical and compliance requirements with dimensional variations within acceptable tolerance ranges: length reduction of 0.87mm, width reduction of 1.85mm, and height reduction of 1.50mm. This part maintains identical electrical specifications, isolation voltage, and winding configuration. The F24-500 carries ROHS3 Compliant status and Active product status. The part is designated as Split Pack™ Class 2/3 series. This part is suitable for substitution in applications where the Tamura 3FS-524 is specified.

Both substitute parts are Active products with current manufacturing status and equivalent regulatory compliance certifications. Selection between the main part and substitutes should be based on inventory availability, lead time requirements, and procurement preferences.

Frequently Asked Questions (FAQ)

Q: What defines electrical equivalence for the 3FS-524 transformer?

A: Electrical equivalence requires identical primary voltage (115V), secondary voltage configuration (12V parallel or 24V series), output current capacity (1A parallel or 500mA series), power rating (12VA), isolation voltage (2500Vrms), and winding configuration (single primary, dual secondary, no center tap).

Q: Are the substitute parts mechanically compatible with the original Tamura 3FS-524?

A: Both substitute parts use through-hole mounting with PC pin termination, matching the original part. Dimensional variations exist: the ST-5-24 and F24-500 are slightly smaller in length, width, and height. These variations remain within acceptable tolerance ranges for through-hole PCB mounting applications. Physical fit should be verified for space-constrained designs.

Q: What is the difference between Direct and Similar substitute classifications?

A: Direct equivalents (ST-5-24) meet all electrical, mechanical, and compliance requirements with minimal dimensional variation. Similar equivalents (F24-500) meet all electrical and compliance requirements with slightly larger dimensional variations but remain functionally compatible.

Q: Do all substitute parts maintain the same RoHS compliance status?

A: The Tamura 3FS-524 is RoHS Compliant. Both substitute parts carry ROHS3 Compliant status, which represents an updated compliance standard. Both certifications satisfy RoHS requirements for equivalent component selection.

Q: Can the substitute parts be used interchangeably in existing designs?

A: Yes, both substitute parts are electrically and mechanically equivalent for through-hole PCB applications. Verification of physical fit in space-constrained designs is recommended due to minor dimensional differences. All parts maintain identical electrical performance and isolation voltage specifications.

Q: What inventory status applies to these substitute parts?

A: The Tamura 3FS-524 has 1107 pieces in stock. The Signal Transformer ST-5-24 has 867 pieces in stock. The Triad Magnetics F24-500 has 1232 pieces in stock. All parts maintain Active product status with current manufacturing availability.