FD5-120 Equivalent & Substitute Parts

Part Overview

The FD5-120 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 (120V, 100mA output). This chassis-mount transformer is designed for applications requiring isolated AC power conversion with selectable primary voltage input. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts are identified to provide alternative sourcing options when the primary manufacturer part is unavailable or when inventory constraints require component alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

FD5-120

Triad MagneticsIn Stock: 1151FD5-120 Datasheet

Current PartRFQ

DP-241-5-120

Signal TransformerIn Stock: 1114DP-241-5-120 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FD5-120 with equivalent parts is determined by strict electrical and mechanical parameter matching. The following criteria establish substitution validity:

Electrical Parameters (Must Match Exactly):

• Primary voltage configuration: Dual winding supporting 115V and 230V input
• Secondary voltage output: 120V at full load
• Maximum output current: 100mA
• Power rating: 12VA maximum
• Center tap secondary winding configuration
• Isolation voltage: 2500VAC minimum

Mechanical Parameters (Must Match Exactly):

• Core type: Laminated
• Mounting type: Chassis mount
• Termination style: Solder and Quick Connect 0.187" (4.7mm)
• Physical dimensions: Compatible within specified length, width, and height tolerances
• Weight: Equivalent at 0.7 lb (317.51 g)

Compliance Parameters (Must Match):

• RoHS3 compliance status
• REACH unaffected status
• ECCN and HTSUS classifications

The DP-241-5-120 manufactured by Signal Transformer meets all specified electrical, mechanical, and compliance requirements for direct substitution with the FD5-120.

Parameter Comparison

Engineering Selection Recommendations

Both the FD5-120 and DP-241-5-120 are active production components with identical electrical specifications and full regulatory compliance. Selection between these parts is based on availability and packaging requirements:

FD5-120 (Triad Magnetics): Supplied in box packaging with 1088 units currently in stock. This configuration is suitable for applications requiring individual unit handling and traceability documentation.

DP-241-5-120 (Signal Transformer): Supplied in bulk packaging with 1080 units currently in stock. This configuration is suitable for high-volume manufacturing environments where bulk component handling is standard practice.

Both parts maintain identical electrical performance, mechanical compatibility, and regulatory compliance status (RoHS3 Compliant, REACH Unaffected, EAR99 ECCN classification). Physical dimensions are within acceptable tolerance ranges for chassis-mount applications. The choice between these substitutes is determined by procurement requirements, packaging preferences, and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the DP-241-5-120 be used as a direct replacement for the FD5-120 in existing designs?

A: Yes. The DP-241-5-120 meets all electrical and mechanical specifications of the FD5-120. Primary voltage configuration (115V/230V dual winding), secondary voltage (120V), output current (100mA), power rating (12VA), center-tap configuration, isolation voltage (2500VAC), and mounting type (chassis mount) are identical. Physical dimensions are within acceptable tolerance ranges for chassis-mount applications.

Q: What is the difference between box and bulk packaging for these transformers?

A: The FD5-120 is supplied in box packaging, which provides individual unit packaging suitable for component traceability and controlled handling. The DP-241-5-120 is supplied in bulk packaging, which is optimized for high-volume manufacturing environments where components are handled in larger quantities. Both packaging types contain the same electrical component with identical specifications.

Q: Are the termination styles compatible between FD5-120 and DP-241-5-120?

A: Yes. Both parts feature solder and quick connect termination with 0.187" (4.7mm) connector specifications, ensuring compatibility with existing PCB layouts and connector interfaces.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the FD5-120 and DP-241-5-120 are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8504.31.4035. They meet the same regulatory requirements for international distribution and use.

Q: What are the physical dimension tolerances between these two parts?

A: Length dimensions are 71.42mm (FD5-120) versus 71.40mm (DP-241-5-120), a difference of 0.02mm. Width dimensions are 34.93mm (FD5-120) versus 36.30mm (DP-241-5-120), a difference of 1.37mm. Height dimensions are 41.28mm (FD5-120) versus 42.80mm (DP-241-5-120), a difference of 1.52mm. These variations are within acceptable tolerances for chassis-mount transformer applications.

Q: Are both parts currently in active production?

A: Yes. Both the FD5-120 and DP-241-5-120 maintain active product status with current inventory availability (1088 units and 1080 units respectively).