LP-56-200 Equivalent & Substitute Parts

Part Overview

The LP-56-200 is a semi-toroidal power transformer manufactured by Signal Transformer, rated at 12VA with dual primary and secondary windings. The device supports input voltages of 115V or 230V and delivers output configurations of 28V parallel (400mA) or 56V series (200mA). This transformer is designed for through-hole mounting with PC pin termination and maintains ROHS3 compliance and REACH unaffected status. The part is currently active in production with 1071 units in stock.

Equivalent and substitute parts are identified to provide procurement flexibility, ensure supply chain continuity, and support design requirements where the primary part may be unavailable or where alternative core construction offers operational advantages within the specified electrical and mechanical parameters.

Substiute Parts

LP-56-200

Signal TransformerIn Stock: 1105LP-56-200 Datasheet

Current PartRFQ

FP56-200

Triad MagneticsIn Stock: 931FP56-200 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The FP56-200 manufactured by Triad Magnetics qualifies as a direct substitute for the LP-56-200 based on the following critical parameters:

• Identical power rating: 12VA
• Matching primary voltage inputs: 115V, 230V
• Matching secondary voltage outputs: 28V parallel, 56V series
• Matching output current specifications: 400mA parallel, 200mA series
• Identical winding configuration: Dual primary, dual secondary
• Identical mounting and termination: Through hole with PC pin termination
• Matching physical footprint: 64.60mm L × 50.80mm W
• Equivalent height tolerance: 26.97mm (FP56-200) versus 27.10mm (LP-56-200)
• Matching compliance certifications: ROHS3 compliant, REACH unaffected

The primary difference between these parts is core construction: the LP-56-200 uses semi-toroidal core technology, while the FP56-200 uses laminated core technology. Both designs deliver the specified electrical performance within the defined parameters. The FP56-200 provides higher isolation voltage (2000Vrms versus 1500Vrms), which represents an operational advantage in isolation-critical applications.

Parameter Comparison

Engineering Selection Recommendations

Both the LP-56-200 and FP56-200 are active production parts with full regulatory compliance. Selection between these parts should be based on:

• Core construction preference: Semi-toroidal (LP-56-200) versus laminated (FP56-200)
• Isolation voltage requirement: The FP56-200 provides 2000Vrms isolation versus 1500Vrms for the LP-56-200, offering enhanced isolation margin in high-voltage isolation applications
• Packaging format: LP-56-200 supplied in bulk; FP56-200 supplied in box packaging
• Inventory availability: LP-56-200 has 1071 units in stock; FP56-200 has 871 units in stock
• Both parts meet ROHS3 and REACH compliance requirements for regulated markets

Frequently Asked Questions (FAQ)

Q: Can the FP56-200 be used as a direct replacement for the LP-56-200 in existing designs?

A: Yes. Both transformers deliver identical electrical specifications across all primary and secondary voltage and current parameters. The physical footprint and mounting configuration are identical, and both use PC pin termination for through-hole mounting. The height difference of 0.13mm is within standard PCB assembly tolerances.

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

A: Semi-toroidal cores use a partially wound toroidal geometry, while laminated cores use stacked laminations. Both designs achieve the specified 12VA power rating and electrical performance. The choice between them depends on application-specific requirements such as EMI characteristics, thermal performance, and mechanical considerations not specified in the electrical parameters.

Q: Does the higher isolation voltage of the FP56-200 affect compatibility?

A: No. Higher isolation voltage is a superset capability. The FP56-200 meets or exceeds all electrical requirements of the LP-56-200. Applications requiring 1500Vrms isolation will operate correctly with the FP56-200, which provides 2000Vrms isolation.

Q: Are there any packaging considerations when switching between these parts?

A: The LP-56-200 is supplied in bulk packaging, while the FP56-200 is supplied in box packaging. This affects procurement and handling but does not impact electrical or mechanical compatibility in the application.

Q: Do both parts support the same voltage configurations?

A: Yes. Both transformers support dual primary windings (115V or 230V selection) and dual secondary windings (28V parallel or 56V series configuration). Output current ratings are identical: 400mA in parallel mode and 200mA in series mode.