FD5-24 Equivalent & Substitute Parts Reference

Part Overview

The FD5-24 is a laminated core power transformer manufactured by Triad Magnetics, rated for 12VA maximum power with dual primary windings (115V/230V) and a single center-tapped secondary winding (24V, 500mA output). This chassis-mount transformer is designed for applications requiring isolated AC power conversion with flexible input voltage selection. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory certifications align with the original design requirements.

Substiute Parts

FD5-24

Triad MagneticsIn Stock: 1050FD5-24 Datasheet

Current PartRFQ

DP-241-5-24

Signal TransformerIn Stock: 4656DP-241-5-24 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FD5-24 is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Primary voltage configuration (115V/230V dual winding), secondary voltage output (24V), maximum output current (500mA), power rating (12VA), isolation voltage (2500VAC), and center-tap secondary winding presence.

Mechanical Compatibility: Chassis mount form factor, solder and quick-connect termination capability, and physical dimensions within acceptable tolerance ranges for board-level integration.

Regulatory & Compliance: RoHS3 compliance status, REACH unaffected classification, and equivalent ECCN/HTSUS coding.

The DP-241-5-24 manufactured by Signal Transformer satisfies all substitution criteria through identical electrical ratings, compatible mechanical mounting, and matching regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The FD5-24 (Triad Magnetics) is the original specified component and maintains Active product status with confirmed inventory availability (995 units). This part is the preferred choice for new designs and production builds.

Substitute Part Selection: The DP-241-5-24 (Signal Transformer) is a direct electrical and mechanical equivalent suitable for applications where the FD5-24 is unavailable or where supply chain diversification is required. Both parts carry identical RoHS3 compliance and REACH unaffected status, ensuring regulatory equivalence. The DP-241-5-24 offers higher inventory availability (4596 units), making it advantageous for high-volume production scenarios or extended lead-time mitigation.

Dimensional Considerations: Physical dimensions differ marginally (FD5-24: 71.42mm L × 34.93mm W × 41.28mm H; DP-241-5-24: 71.40mm L × 36.30mm W × 42.80mm H). These variations fall within acceptable mechanical tolerances for standard chassis-mount applications but should be verified against specific PCB layout constraints and enclosure clearances in space-critical designs.

Compliance Equivalence: Both parts share identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications, confirming regulatory and trade compliance alignment.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for the DP-241-5-24 to substitute the FD5-24?

A: The substitute must provide identical primary voltage configuration (115V/230V dual winding), secondary voltage (24V), maximum output current (500mA), power rating (12VA), isolation voltage (2500VAC), and center-tap secondary winding. The DP-241-5-24 meets all these requirements.

Q: Are there mechanical compatibility concerns when substituting the DP-241-5-24 for the FD5-24?

A: Both transformers are chassis-mount with solder and quick-connect termination. Dimensional differences are minor (approximately 1.4mm width and 1.5mm height variation). Verify that the DP-241-5-24's dimensions (71.40mm L × 36.30mm W × 42.80mm H) fit within your PCB layout and enclosure constraints before implementation.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the FD5-24 and DP-241-5-24 are RoHS3 compliant, REACH unaffected, and share identical ECCN and HTSUS classifications. They are regulatory equivalents for procurement and compliance documentation purposes.

Q: Can I use the DP-241-5-24 in existing designs originally specified for the FD5-24?

A: Electrical substitution is direct due to identical specifications. Mechanical substitution requires verification of physical dimensions against your specific PCB layout and mounting clearances. Confirm termination connector compatibility with your existing harness or solder pads.

Q: What is the difference between 2500VAC and 2500Vrms isolation voltage specifications?

A: These terms are equivalent in transformer isolation voltage specifications. Both the FD5-24 (2500VAC) and DP-241-5-24 (2500Vrms) provide identical isolation performance.

Q: Which part should I select for new production designs?

A: The FD5-24 is the original specified component and is recommended for new designs. If supply constraints arise, the DP-241-5-24 is a qualified direct substitute with higher inventory availability.