Equivalent & Substitute Parts for Tamura 3FS-216

Part Overview

The Tamura 3FS-216 is a laminated core power transformer rated at 1.1VA with a single primary winding (115V) and dual secondary windings (8V parallel / 16V series configuration). This through-hole mounted transformer is designed for Class 2/3 applications requiring galvanic isolation at 2500Vrms. The part is Active in product status and RoHS Compliant, making it suitable for modern electronic equipment requiring environmental compliance. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits functional alternatives within specified electrical and mechanical parameters.

Substiute Parts

3FS-216

TamuraIn Stock: 7393FS-216 Datasheet

Current PartRFQ

ST-2-16

Signal TransformerIn Stock: 1500ST-2-16 Datasheet

DirectRFQ

F16-070

Triad MagneticsIn Stock: 1040F16-070 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Tamura 3FS-216 are classified based on electrical and mechanical compatibility within the following criteria:

Electrical Compatibility Requirements:

• Primary voltage: 115V (single winding)
• Secondary voltage configuration: Parallel 8V / Series 16V (dual windings)
• Output current capacity: Parallel 140mA / Series 70mA
• Power rating: 1.1VA
• Isolation voltage: 2500Vrms
• Core type: Laminated
• No center tap

Mechanical Compatibility Requirements:

• Mounting type: Through Hole
• Termination style: PC Pin
• Physical dimensions: Approximately 35mm L × 31mm W × 25mm H (seated)

Substitute Classification:

Direct Equivalent: Signal Transformer ST-2-16 meets all electrical specifications and mechanical mounting requirements with minimal dimensional variance (34.90mm L × 28.60mm W × 24.60mm H).

Similar Equivalent: Triad Magnetics F16-070 meets all electrical specifications and mechanical mounting requirements with minimal dimensional variance (34.93mm L × 28.58mm W × 23.80mm H).

Both substitute parts maintain identical electrical performance parameters and through-hole PC pin termination, permitting direct functional substitution in circuit designs where the Tamura 3FS-216 is specified.

Parameter Comparison

Engineering Selection Recommendations

Tamura 3FS-216 Selection Criteria:

• Primary choice when Tamura component qualification is required by design specification or procurement standards
• RoHS Compliant status suitable for applications requiring environmental compliance
• Active product status ensures continued manufacturer support and availability
• Tube packaging suitable for automated assembly processes

Signal Transformer ST-2-16 Selection Criteria:

• Direct electrical equivalent with identical voltage and current specifications
• ROHS3 Compliant status meets enhanced environmental requirements
• Active product status ensures continued availability
• Slightly reduced physical dimensions (34.90mm L × 28.60mm W × 24.60mm H) may provide PCB layout advantages
• Box packaging suitable for manual assembly or lower-volume production
• Higher inventory availability (1449 pcs) supports rapid procurement

Triad Magnetics F16-070 Selection Criteria:

• Direct electrical equivalent with identical voltage and current specifications
• ROHS3 Compliant status meets enhanced environmental requirements
• Active product status ensures continued availability
• Smallest physical profile (34.93mm L × 28.58mm W × 23.80mm H) optimizes PCB space utilization
• Split Pack™ series designation indicates specialized packaging configuration
• Box packaging suitable for manual assembly or lower-volume production
• Moderate inventory availability (988 pcs) supports standard procurement timelines

All three parts share identical electrical performance, isolation voltage, and through-hole PC pin termination. Selection between alternatives is determined by component qualification requirements, PCB layout constraints, packaging preferences, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the Signal Transformer ST-2-16 be used as a direct replacement for the Tamura 3FS-216?

A: Yes. The ST-2-16 provides identical electrical specifications (1.1VA, 115V primary, 8V/16V secondary, 140mA/70mA output, 2500Vrms isolation) and identical mechanical mounting (through-hole PC pin termination). Dimensional differences are minimal (34.90mm L × 28.60mm W × 24.60mm H versus 35.56mm L × 31.00mm W × 25.40mm H), and the smaller profile may provide PCB layout benefits.

Q: Can the Triad Magnetics F16-070 be used as a direct replacement for the Tamura 3FS-216?

A: Yes. The F16-070 provides identical electrical specifications (1.1VA, 115V primary, 8V/16V secondary, 140mA/70mA output, 2500Vrms isolation) and identical mechanical mounting (through-hole PC pin termination). Dimensional differences are minimal (34.93mm L × 28.58mm W × 23.80mm H versus 35.56mm L × 31.00mm W × 25.40mm H), and the smallest profile optimizes PCB space utilization.

Q: What are the critical electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: primary voltage (115V), secondary voltage configuration (8V parallel / 16V series), output current capacity (140mA parallel / 70mA series), power rating (1.1VA), isolation voltage (2500Vrms), core type (laminated), winding configuration (single primary, dual secondary, no center tap), and mounting type (through-hole PC pin termination).

Q: Are there dimensional constraints that affect substitution?

A: All three parts maintain similar physical dimensions within approximately 1mm variance in length and width, and 1.6mm variance in seated height. Through-hole PC pin termination is identical across all parts. Verify PCB footprint and clearance requirements for your specific application, as the Triad Magnetics F16-070 has the smallest profile (23.80mm height).

Q: What compliance certifications apply to these transformers?

A: The Tamura 3FS-216 is RoHS Compliant. The Signal Transformer ST-2-16 and Triad Magnetics F16-070 are both ROHS3 Compliant, indicating enhanced environmental compliance. All three parts are classified as EAR99 for export control purposes and share the same HTSUS code (8504.31.4035).

Q: How do packaging differences affect component selection?

A: The Tamura 3FS-216 is supplied in Tube packaging, suitable for automated assembly processes. The Signal Transformer ST-2-16 and Triad Magnetics F16-070 are supplied in Box packaging, suitable for manual assembly or lower-volume production runs. Packaging selection depends on manufacturing process requirements and production volume.

Q: What inventory considerations should influence substitution decisions?

A: Current inventory levels are: Tamura 3FS-216 (718 pcs), Signal Transformer ST-2-16 (1449 pcs), and Triad Magnetics F16-070 (988 pcs). Higher inventory availability for the ST-2-16 may support faster procurement timelines. All three parts maintain Active product status, ensuring continued manufacturer support.