LP-56-100 Equivalent & Substitute Parts

Part Overview

The LP-56-100 is a semi-toroidal power transformer rated at 6VA with dual primary and secondary windings. It supports input voltages of 115V or 230V and provides output configurations of 28V parallel (200mA) or 56V series (100mA). The component is designed for through-hole mounting with PC pin termination and is currently in active production status. Equivalent parts are identified when component availability is limited, supply chain disruptions occur, or inventory requirements necessitate alternative sourcing from qualified manufacturers.

Substiute Parts

LP-56-100

Signal TransformerIn Stock: 824LP-56-100 Datasheet

Current PartRFQ

FP56-100

Triad MagneticsIn Stock: 781FP56-100 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LP-56-100 is determined by strict equivalence across the following critical parameters:

• Power rating: 6VA
• Primary voltage configuration: Dual winding supporting 115V and 230V
• Secondary voltage outputs: Parallel 28V and series 56V
• Output current capacity: Parallel 200mA and series 100mA
• Winding configuration: Dual primary and dual secondary
• Mounting and termination: Through hole with PC pin termination
• Regulatory compliance: ROHS3 compliant

The FP56-100 from Triad Magnetics meets all electrical and mechanical requirements for direct substitution. While the core construction differs (laminated versus semi-toroidal), both designs deliver identical electrical performance within the specified parameters. Physical dimensions remain within acceptable tolerance ranges for through-hole PCB mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the LP-56-100 and FP56-100 are active production components with ROHS3 compliance and equivalent electrical specifications. Selection between these parts should be based on:

Availability and Lead Time: Choose based on current inventory status and procurement timelines from respective manufacturers.

Isolation Voltage Requirement: The FP56-100 provides 2000Vrms isolation compared to 1500Vrms for the LP-56-100. Applications requiring higher isolation voltage margin should specify the FP56-100.

Physical Space Constraints: The FP56-100 has a maximum seated height of 22.22mm versus 21.60mm for the LP-56-100. Verify PCB clearance in height-constrained designs.

Core Technology Preference: The LP-56-100 uses semi-toroidal construction while the FP56-100 uses laminated core design. Both deliver identical electrical performance within specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the FP56-100 directly replace the LP-56-100 in existing designs?

A: Yes. Both components deliver identical electrical performance across all specified parameters: 6VA power rating, dual primary windings supporting 115V/230V input, dual secondary windings providing 28V parallel or 56V series output, and 200mA/100mA current capacity respectively. Physical dimensions are within acceptable tolerance for through-hole PCB mounting.

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

A: The LP-56-100 uses semi-toroidal core geometry while the FP56-100 uses laminated core design. Both core types deliver the specified electrical performance. Core selection typically reflects manufacturing process and cost optimization rather than functional differences at the specified power rating.

Q: Does the higher isolation voltage of the FP56-100 affect compatibility?

A: No. The FP56-100 provides 2000Vrms isolation versus 1500Vrms for the LP-56-100. Higher isolation voltage is a superset capability and does not create incompatibility. Applications designed for 1500Vrms isolation operate without issue with the FP56-100.

Q: Are there dimensional concerns when substituting the FP56-100?

A: The FP56-100 is 0.62mm taller (22.22mm versus 21.60mm maximum seated height). Verify adequate PCB clearance above the component. Length and width differences are negligible (0.13mm and 0.07mm respectively).

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the LP-56-100 and FP56-100 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8504.31.4035.