FP56-45 Equivalent & Substitute Parts Reference

Part Overview

The FP56-45 is a laminated core power transformer manufactured by Triad Magnetics, rated at 2.5VA with dual primary and secondary windings. This through-hole mounted component operates at 115V or 230V primary voltage with configurable secondary output of 28V parallel or 56V series. The part is Active status and ROHS3 compliant, designed for applications requiring isolated AC power conversion in compact form factors.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across primary voltage, secondary voltage configuration, output current ratings, isolation voltage, mounting type, and termination style.

Substiute Parts

FP56-45

Triad MagneticsIn Stock: 756FP56-45 Datasheet

Current PartRFQ

229E56

Hammond ManufacturingIn Stock: 857229E56 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FP56-45 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Primary voltage configuration: 115V, 230V dual input
• Secondary voltage output: Parallel 28V and Series 56V configuration
• Maximum output current: Parallel 90mA and Series 45mA
• Power rating: Minimum 2.0VA (2.5VA preferred)
• Isolation voltage: Minimum 1750Vrms

Mechanical Equivalence Requirements:

• Mounting type: Through Hole
• Termination style: PC Pin
• Physical dimensions: Compatible with 47.63mm L x 39.67mm W footprint envelope
• Height seated: Maximum 16.51mm

Compliance Requirements:

• ROHS3 Compliant
• REACH Unaffected
• Active product status

The Hammond Manufacturing 229E56 meets all electrical and mechanical substitution criteria with identical primary/secondary voltage configuration, output current ratings, mounting type, and termination style. Core type differs (semi-toroidal vs. laminated), and power rating is 2VA versus 2.5VA, with isolation voltage of 1750Vrms versus 2000Vrms.

Parameter Comparison

Engineering Selection Recommendations

FP56-45 (Triad Magnetics - Primary Selection)

The FP56-45 is the specified component with Active product status, 700 units in stock, and full compliance certifications. This part provides the highest isolation voltage rating at 2000Vrms and maximum power capacity at 2.5VA. Selection of the FP56-45 is appropriate for applications requiring maximum isolation margin and power headroom.

229E56 (Hammond Manufacturing - Substitute Selection)

The 229E56 is an Active status substitute with 803 units in stock. This part maintains electrical equivalence across all primary voltage, secondary voltage, and output current parameters. The 229E56 operates at 2VA power rating and 1750Vrms isolation voltage, both lower than the FP56-45. The 229E56 is suitable for applications where the specified electrical performance is within design margins and the lower power and isolation ratings are acceptable. Both parts are ROHS3 compliant and REACH unaffected.

Selection between these parts should be based on application power budget requirements and isolation voltage margin specifications. Both parts are Active status with current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the 229E56 directly replace the FP56-45 in all applications?

A: The 229E56 provides electrical equivalence for primary voltage, secondary voltage configuration, and output current ratings. However, the 229E56 has a lower power rating (2VA vs. 2.5VA) and lower isolation voltage (1750Vrms vs. 2000Vrms). Substitution is valid only when application power requirements do not exceed 2VA and isolation voltage requirements do not exceed 1750Vrms.

Q: What are the key differences between these parts?

A: The primary differences are core type (laminated vs. semi-toroidal), power rating (2.5VA vs. 2VA), and isolation voltage (2000Vrms vs. 1750Vrms). Electrical performance across primary voltage, secondary voltage, and output current is identical. Physical dimensions differ slightly in length and width orientation.

Q: Are both parts ROHS3 compliant?

A: Yes. Both the FP56-45 and 229E56 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference between laminated core and semi-toroidal core construction?

A: This information is provided as a specification difference only. Core type selection should be based on application-specific requirements for efficiency, EMI characteristics, and thermal performance as defined in your design specifications.

Q: Can I use the 229E56 if my application requires 2000Vrms isolation?

A: No. The 229E56 is rated at 1750Vrms isolation voltage. Applications requiring 2000Vrms isolation must use the FP56-45 or equivalent parts rated at 2000Vrms or higher.

Q: Are the physical dimensions compatible between these parts?

A: Both parts are through-hole mounted with PC pin termination and maximum seated height of 16.51mm. The FP56-45 dimensions are 47.63mm L x 39.67mm W. The 229E56 dimensions are 39.62mm L x 47.75mm W. Verify PCB layout compatibility before substitution.