DST3-24B17 Equivalent & Substitute Parts

Part Overview

The DST3-24B17 is a laminated core power transformer manufactured by Pulse Electronics, rated at 2.4VA with dual primary and secondary windings. This through-hole component is designed for applications requiring switchable voltage configurations through series/parallel winding arrangements. The part is active in production with RoHS compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial electronic equipment. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.

Substiute Parts

DST3-24B17

Pulse ElectronicsIn Stock: 960DST3-24B17 Datasheet

Current PartRFQ

3FD-324

TamuraIn Stock: 60513FD-324 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DST3-24B17 is determined by strict equivalence across the following critical parameters:

• Power rating: 2.4VA
• Primary voltage options: 115V and 230V
• Secondary voltage configuration: Parallel 12V / Series 24V
• Output current capacity: Parallel 200mA / Series 100mA
• Winding configuration: Dual primary and dual secondary
• Core type: Laminated
• Mounting and termination: Through hole with PC pin termination
• Isolation voltage: 2500Vrms minimum
• Regulatory compliance: RoHS compliant

The 3FD-324 from Tamura meets all these electrical and mechanical requirements, establishing it as a direct functional equivalent despite minor dimensional variations within acceptable tolerances for through-hole mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the DST3-24B17 and 3FD-324 are active production components with RoHS compliance and equivalent electrical specifications. Selection between these parts should be based on:

• PCB layout constraints: The 3FD-324 has slightly larger footprint dimensions (35.56mm L × 31.00mm W × 32.10mm H) compared to the DST3-24B17 (35.05mm L × 28.70mm W × 30.23mm H). Verify available board space before substitution.
• Supply chain availability: The 3FD-324 currently has higher inventory (5974 pcs) versus DST3-24B17 (891 pcs).
• Packaging format: DST3-24B17 is supplied in standard packaging; 3FD-324 is supplied in tube packaging.
• Series designation: DST3-24B17 belongs to the Split Bobbin Plug-In series; 3FD-324 belongs to the 3FD-3xx series.

Both parts satisfy identical electrical and isolation requirements for applications requiring dual-voltage primary and secondary configurations.

Frequently Asked Questions (FAQ)

Q: Can the 3FD-324 directly replace the DST3-24B17 in existing designs?

A: Yes, provided PCB layout accommodates the dimensional differences. The 3FD-324 is 0.51mm longer, 2.30mm wider, and 1.87mm taller. Verify clearance around the mounting location before implementation.

Q: Are the voltage and current ratings identical between these parts?

A: Yes. Both transformers provide identical primary voltage options (115V/230V), secondary voltage configurations (12V parallel / 24V series), and output current capacity (200mA parallel / 100mA series).

Q: What is the significance of the dual primary and dual secondary winding configuration?

A: This configuration allows flexible voltage selection. Primary windings can be connected in series or parallel to accommodate 115V or 230V input. Secondary windings similarly support 12V (parallel) or 24V (series) output, enabling single-component solutions for multi-voltage applications.

Q: Are both parts RoHS compliant?

A: Yes. Both DST3-24B17 and 3FD-324 are RoHS compliant with unlimited moisture sensitivity rating (MSL 1).

Q: What is the isolation voltage specification?

A: Both parts provide 2500Vrms isolation voltage between primary and secondary windings, meeting industrial safety requirements for power isolation applications.

Q: Does packaging format affect electrical performance?

A: No. The DST3-24B17 standard packaging and 3FD-324 tube packaging do not affect electrical characteristics. Packaging selection depends on assembly process requirements and inventory management.