Equivalent & Substitute Parts for Tamura 3FD-316 Laminated Power Transformer

Part Overview

The Tamura 3FD-316 is a laminated core power transformer rated at 2.4VA with dual primary and secondary windings. The transformer operates at 115V or 230V primary voltage and delivers parallel 8V or series 16V secondary output. This through-hole mounted component is designed for applications requiring isolated AC power conversion with dual winding flexibility.

The 3FD-316 maintains Active product status and is RoHS Compliant. Equivalent substitute parts are available from alternative manufacturers to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

3FD-316

TamuraIn Stock: 8153FD-316 Datasheet

Current PartRFQ

DST-3-16

Signal TransformerIn Stock: 2388DST-3-16 Datasheet

DirectRFQ

FS16-150

Triad MagneticsIn Stock: 5588FS16-150 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Tamura 3FD-316 are qualified based on strict electrical and mechanical parameter matching:

Electrical Equivalence Criteria:

• Identical power rating: 2.4VA
• Matching primary voltage options: 115V, 230V
• Matching secondary voltage configuration: Parallel 8V, Series 16V
• Matching output current specifications: Parallel 300mA, Series 150mA
• Identical isolation voltage: 2500Vrms
• Dual primary and dual secondary winding configuration
• No center tap requirement

Mechanical Equivalence Criteria:

• Through-hole mounting type
• PC pin termination style
• Laminated core construction
• Comparable physical dimensions and height

Compliance Equivalence Criteria:

• Active product status
• RoHS compliance (RoHS3 or RoHS Compliant)
• Matching ECCN and HTSUS classifications

The following parts meet all substitution criteria and are direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

All three transformers—Tamura 3FD-316, Signal Transformer DST-3-16, and Triad Magnetics FS16-150—are functionally equivalent and maintain Active product status with current RoHS compliance certifications.

Electrical Performance: All parts deliver identical electrical specifications across primary voltage selection, secondary voltage configuration, and output current ratings. Isolation voltage of 2500Vrms is consistent across all three models.

Mechanical Compatibility: Physical dimensions vary slightly between manufacturers. The Tamura 3FD-316 measures 35.56mm L × 31.00mm W × 32.10mm H (seated). The Signal Transformer DST-3-16 measures 34.90mm L × 28.60mm W × 30.80mm H (seated). The Triad Magnetics FS16-150 measures 34.93mm L × 28.56mm W × 30.15mm H (seated). PCB layout and mounting hole spacing must be verified for dimensional compatibility in existing designs.

Compliance Status: All parts carry EAR99 ECCN classification and 8504.31.4035 HTSUS code. The Tamura 3FD-316 is RoHS Compliant. The Signal Transformer DST-3-16 and Triad Magnetics FS16-150 are ROHS3 Compliant, representing current regulatory alignment.

Packaging Considerations: The Tamura 3FD-316 is supplied in Tube packaging. The Signal Transformer DST-3-16 and Triad Magnetics FS16-150 are supplied in Box packaging, which may affect handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the Signal Transformer DST-3-16 directly replace the Tamura 3FD-316 in an existing circuit?

A: Yes, the DST-3-16 is electrically equivalent. All primary and secondary voltage ratings, output current specifications, and isolation voltage match the 3FD-316. However, verify PCB mounting hole spacing and clearance, as physical dimensions differ slightly.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by: 2.4VA power rating, 115V/230V primary voltage options, 8V parallel and 16V series secondary voltage configuration, 300mA parallel and 150mA series output current, 2500Vrms isolation voltage, dual primary and dual secondary windings, and no center tap.

Q: Are there differences in RoHS compliance between these parts?

A: The Tamura 3FD-316 is RoHS Compliant. The Signal Transformer DST-3-16 and Triad Magnetics FS16-150 are ROHS3 Compliant. Both compliance levels are current and acceptable for new designs.

Q: How do packaging differences affect component selection?

A: The Tamura 3FD-316 is supplied in Tube packaging, while the Signal Transformer DST-3-16 and Triad Magnetics FS16-150 are supplied in Box packaging. Packaging affects handling, storage, and automated assembly compatibility. Verify packaging requirements for your manufacturing process.

Q: Are physical dimension differences significant for PCB layout?

A: Physical dimensions vary between manufacturers. The Tamura 3FD-316 is slightly larger (35.56mm L × 31.00mm W × 32.10mm H) compared to the Signal Transformer DST-3-16 (34.90mm L × 28.60mm W × 30.80mm H) and Triad Magnetics FS16-150 (34.93mm L × 28.56mm W × 30.15mm H). Verify mounting hole spacing and clearance requirements for your specific PCB design before substitution.

Q: Do all three transformers support both 115V and 230V primary operation?

A: Yes. All three transformers support dual primary voltage operation at 115V or 230V, with corresponding secondary output of 8V parallel or 16V series.

Q: What is the maximum output current for each winding configuration?

A: In parallel configuration, maximum output current is 300mA. In series configuration, maximum output current is 150mA. This specification is identical across all three equivalent parts.