LP10-250B23 Equivalent & Substitute Parts

Part Overview

The LP10-250B23 is a 2VA semi-toroidal power transformer manufactured by Pulse Electronics, designed for through-hole mounting applications. This component features dual primary and secondary windings with configurable output options (parallel 5V at 500mA or series 10V at 250mA). The transformer is actively produced and maintains full RoHS compliance with 1500Vrms isolation rating, making it suitable for industrial and commercial power supply designs requiring compact form factors and reliable voltage transformation.

Equivalent parts are identified when component availability, lead time, or inventory constraints necessitate alternative sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

LP10-250B23

Pulse ElectronicsIn Stock: 751LP10-250B23 Datasheet

Current PartRFQ

LP-10-250

Signal TransformerIn Stock: 241337LP-10-250 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LP-10-250 manufactured by Signal Transformer qualifies as a direct equivalent based on the following substitution criteria:

Electrical Compatibility:

• Identical power rating: 2VA
• Matching secondary output configurations: parallel 5V at 500mA and series 10V at 250mA
• Equivalent isolation voltage: 1500Vrms
• Identical winding configuration: dual primary and dual secondary

Mechanical Compatibility:

• Matching transformer type: semi-toroidal
• Compatible mounting: through-hole with PC pin termination
• Equivalent dimensions: 47.50mm L x 39.60mm W (within tolerance of 47.63mm x 39.67mm)
• Equivalent seated height: 16.50mm (within tolerance of 16.51mm)
• Equivalent weight: 0.313 lb

Regulatory Compliance:

• RoHS3 compliant (exceeds RoHS requirement)
• REACH unaffected status maintained
• Identical ECCN and HTSUS classifications

Parameter Comparison

Engineering Selection Recommendations

Both the LP10-250B23 and LP-10-250 are active production components with full regulatory compliance. Selection between these parts should be based on:

Availability and Lead Time: The LP-10-250 maintains significantly higher inventory (241,320 pieces) compared to the LP10-250B23 (714 pieces), making it the preferred choice for applications where supply chain continuity is critical.

Compliance Status: The LP-10-250 carries RoHS3 certification, which exceeds the RoHS compliance requirement of the LP10-250B23. Both maintain REACH unaffected status and identical trade classification codes.

Mechanical Fit: Dimensional tolerances between the two parts are negligible (0.13mm length variance, 0.07mm width variance, 0.01mm height variance), ensuring direct mechanical compatibility in through-hole PCB applications without design modification.

Electrical Performance: Identical electrical specifications across all measured parameters—power rating, output voltage/current configurations, isolation voltage, and winding architecture—ensure functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the LP-10-250 be used as a direct replacement for the LP10-250B23 in existing designs?

A: Yes. Both transformers share identical electrical specifications (2VA power rating, dual primary/secondary windings, 5V/500mA parallel or 10V/250mA series output, 1500Vrms isolation) and compatible mechanical characteristics (semi-toroidal, through-hole mounting, PC pin termination). Dimensional differences are within standard manufacturing tolerances and do not affect PCB layout or assembly.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching: power rating (2VA), transformer type (semi-toroidal), winding configuration (dual primary and secondary), output voltage and current specifications (parallel 5V/500mA or series 10V/250mA), isolation voltage (1500Vrms), mounting method (through-hole), termination style (PC pin), and physical dimensions within tolerance. All these parameters are identical between the LP10-250B23 and LP-10-250.

Q: Are there any compliance differences between these parts?

A: Both parts maintain REACH unaffected status and EAR99 export classification. The LP-10-250 carries RoHS3 certification while the LP10-250B23 carries RoHS compliance. RoHS3 represents an enhanced compliance standard, making the LP-10-250 suitable for applications with stricter environmental requirements.

Q: How do the physical dimensions compare?

A: The LP10-250B23 measures 47.63mm L x 39.67mm W x 16.51mm H (seated), while the LP-10-250 measures 47.50mm L x 39.60mm W x 16.50mm H (seated). These differences (0.13mm, 0.07mm, and 0.01mm respectively) fall within standard manufacturing tolerances and do not impact PCB footprint or assembly clearances.

Q: Which part should be selected for new designs?

A: The LP-10-250 is recommended for new designs due to superior inventory availability (241,320 pieces versus 714 pieces) and enhanced RoHS3 compliance status. Both parts are active production components with identical electrical and mechanical specifications.