FD5-20 Equivalent & Substitute Parts Reference

Part Overview

The FD5-20 is a laminated core power transformer manufactured by Triad Magnetics, rated for 12VA maximum power with dual primary windings (115V/230V) and a single 20V secondary winding with center tap. This chassis mount transformer is designed for applications requiring isolated AC power conversion with a maximum output current of 600mA. The part is currently active in production with ROHS3 compliance and is suitable for direct integration into electronic equipment requiring standardized power transformation.

Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers while preserving form factor and termination compatibility.

Substiute Parts

FD5-20

Triad MagneticsIn Stock: 1128FD5-20 Datasheet

Current PartRFQ

DP-241-5-20

Signal TransformerIn Stock: 1880DP-241-5-20 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FD5-20 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Identical power rating: 12VA maximum
• Matching primary voltage configuration: Dual 115V/230V
• Matching secondary voltage: 20V at full load
• Matching output current capacity: 600mA minimum
• Identical secondary winding configuration: Single winding with center tap
• Equivalent isolation voltage: 2500VAC or higher

Mechanical Equivalence Requirements:

• Identical core type: Laminated
• Identical mounting type: Chassis Mount
• Compatible termination style: Solder and Quick Connect 0.187" (4.7mm)
• Physical dimensions within acceptable tolerance for chassis integration

Compliance Requirements:

• ROHS3 compliance maintained
• REACH unaffected status maintained
• Equivalent ECCN and HTSUS classification

The DP-241-5-20 manufactured by Signal Transformer meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

FD5-20 (Triad Magnetics): Select this part when existing inventory or supply chain preference favors Triad Magnetics. The part is active in production with 1084 units in stock. ROHS3 compliance and REACH unaffected status confirm regulatory alignment for current and future applications.

DP-241-5-20 (Signal Transformer): Select this part as a direct substitute when supply availability of the FD5-20 is constrained. The DP-241-5-20 maintains identical electrical specifications and compliance certifications. Higher inventory availability (1817 units) may support extended production schedules. Physical dimensions are within acceptable tolerance for standard chassis mount applications.

Both parts are classified as Active products, confirming long-term availability and manufacturer support. Selection between these parts should be based on supply chain logistics, cost considerations, and existing qualification documentation rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the DP-241-5-20 be used as a direct replacement for the FD5-20 in existing designs?

A: Yes. The DP-241-5-20 is electrically and mechanically equivalent to the FD5-20. All critical parameters including power rating, voltage specifications, output current, winding configuration, isolation voltage, and termination style are identical. Physical dimensions are within acceptable tolerance for chassis mount integration.

Q: Are there any compliance differences between the FD5-20 and DP-241-5-20?

A: No. Both parts maintain ROHS3 compliance, REACH unaffected status, and identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications. Regulatory requirements are satisfied by either part.

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

A: Substitution is determined by matching power rating (12VA), primary voltage configuration (115V/230V dual), secondary voltage (20V), output current capacity (600mA), secondary winding configuration (single with center tap), and isolation voltage (2500VAC). All substitute parts must meet or exceed these specifications.

Q: Are the physical dimensions of the DP-241-5-20 compatible with FD5-20 mounting locations?

A: Yes. The DP-241-5-20 dimensions (71.40mm L × 36.30mm W × 42.80mm H) are within acceptable tolerance of the FD5-20 dimensions (71.42mm L × 34.93mm W × 41.28mm H) for standard chassis mount applications. Minor dimensional variations do not affect mechanical compatibility.

Q: What termination options are available on both parts?

A: Both the FD5-20 and DP-241-5-20 feature dual termination options: Solder and Quick Connect 0.187" (4.7mm). This allows flexible integration into existing PCB layouts and connector systems.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on supply chain availability, cost, and existing manufacturer relationships. Both parts are active in production and maintain equivalent compliance certifications.