Equivalent & Substitute Parts: 3FS-416

Part Overview

The 3FS-416 is a laminated core power transformer manufactured by Tamura, rated for 6VA with dual secondary windings. This through-hole mounted component features a single primary winding (115V) and dual secondary windings capable of parallel (8V, 800mA) or series (16V, 400mA) configurations. The part is active in production status and RoHS compliant, making it suitable for industrial and commercial power supply applications where isolation and voltage transformation are required.

Equivalent parts are identified when alternative manufacturers offer transformers with identical electrical specifications, matching isolation voltage, equivalent physical dimensions, and compatible termination methods. Substitute identification ensures design flexibility and supply chain continuity.

Substiute Parts

3FS-416

TamuraIn Stock: 11353FS-416 Datasheet

Current PartRFQ

F16-400

Triad MagneticsIn Stock: 962F16-400 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3FS-416 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Identical power rating (6VA)
• Matching primary voltage (115V)
• Matching secondary voltage outputs in both parallel (8V) and series (16V) configurations
• Matching output current capabilities (800mA parallel, 400mA series)
• Equivalent isolation voltage (2500Vrms)
• Identical winding configuration (single primary, dual secondary, no center tap)

Mechanical & Interface Equivalence Requirements:

• Through-hole mounting type
• PC pin termination style
• Physical dimensions within acceptable tolerance for PCB mounting

Compliance Equivalence Requirements:

• RoHS compliance status
• Active production status

The F16-400 manufactured by Triad Magnetics meets all electrical and mechanical equivalence criteria and is classified as a direct substitute for the 3FS-416.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 3FS-416 (Tamura)

The 3FS-416 is the specified component and remains the primary choice for new designs. It is active in production with 1041 units in stock, RoHS compliant, and carries MSL Level 1 (unlimited moisture sensitivity rating), indicating robust handling characteristics.

Substitute Selection: F16-400 (Triad Magnetics)

The F16-400 is a direct electrical and mechanical equivalent suitable for use when 3FS-416 availability is constrained. It meets all critical electrical parameters, isolation requirements, and mounting specifications. The F16-400 is ROHS3 compliant (equivalent to RoHS compliance) and active in production with 874 units in stock. Physical dimensions are within acceptable tolerance for standard PCB mounting applications. The F16-400 is packaged in box format compared to the tube packaging of the 3FS-416; this does not affect functional equivalence but may impact inventory management and component handling procedures.

Both parts are classified under ECCN EAR99 and carry identical HTSUS commodity codes within the transformer category (8504.31.xx), confirming regulatory equivalence.

Frequently Asked Questions (FAQ)

Q: Can the F16-400 be used as a direct replacement for the 3FS-416 in existing designs?

A: Yes. The F16-400 provides electrical and mechanical equivalence across all critical parameters: power rating, voltage outputs, current capacity, isolation voltage, winding configuration, mounting type, and termination style. Physical dimensions are compatible with standard through-hole PCB layouts.

Q: Are there differences in packaging between these parts?

A: The 3FS-416 is supplied in tube packaging, while the F16-400 is supplied in box packaging. This affects component handling and storage procedures but does not impact electrical performance or functional compatibility.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS compliant. The 3FS-416 carries RoHS Compliant status, and the F16-400 carries ROHS3 Compliant status, which represents equivalent environmental compliance. Both are classified under ECCN EAR99 for export control purposes.

Q: What is the significance of the isolation voltage rating?

A: Both parts provide 2500Vrms isolation voltage between primary and secondary windings. This specification determines the maximum voltage differential that can be safely applied across the transformer windings and is critical for safety and regulatory compliance in power supply applications.

Q: Are the physical dimensions identical?

A: Physical dimensions are compatible but not identical. The F16-400 is slightly smaller (41.28mm L × 33.32mm W × 33.32mm H) compared to the 3FS-416 (41.50mm L × 34.83mm W × 34.55mm H). These differences are within acceptable tolerance for standard through-hole PCB mounting and do not affect functional compatibility.

Q: Can both parts operate in parallel and series secondary configurations?

A: Yes. Both the 3FS-416 and F16-400 feature dual secondary windings that support parallel configuration (8V, 800mA) and series configuration (16V, 400mA) output modes.