PL2.5-28-130B Equivalent & Substitute Parts

Part Overview

The PL2.5-28-130B is a laminated core power transformer manufactured by Tamura, rated at 2.5VA with dual primary and secondary windings. This through-hole mounted component is designed for applications requiring 115V or 230V primary input with configurable secondary output of 14V (parallel) or 28V (series). The product maintains active status with RoHS compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or equivalent performance specifications across different manufacturers while maintaining identical electrical and mechanical parameters.

Substiute Parts

PL2.5-28-130B

TamuraIn Stock: 844PL2.5-28-130B Datasheet

Current PartRFQ

14A-2.5R-28

Signal TransformerIn Stock: 165814A-2.5R-28 Datasheet

DirectRFQ

VPP28-090

Triad MagneticsIn Stock: 21026VPP28-090 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PL2.5-28-130B is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Power rating: 2.5VA
• Primary voltage options: 115V, 230V
• Secondary voltage configuration: Parallel 14V, Series 28V
• Maximum output current: Parallel 180mA, Series 90mA
• Dual primary and dual secondary winding architecture
• No center tap configuration
• Laminated core construction

Mechanical Parameters (Must Match Exactly):

• Mounting type: Through hole
• Termination style: PC pin
• Height seated (maximum): 28.60mm
• Dimensional tolerance: Length and width within 0.1mm variance

Compliance Parameters:

• RoHS compliance status (RoHS3 or equivalent)
• ECCN classification: EAR99
• HTSUS code: 8504.31.4035

The identified substitutes (14A-2.5R-28 and VPP28-090) meet all electrical and mechanical equivalence criteria. Isolation voltage exceeds the minimum requirement in substitute parts, providing enhanced performance margin.

Parameter Comparison

Engineering Selection Recommendations

PL2.5-28-130B (Tamura) remains the primary specification when original manufacturer sourcing is required or when inventory availability is confirmed at 752 pieces. This part carries active product status with RoHS compliance and meets all stated electrical and mechanical requirements.

14A-2.5R-28 (Signal Transformer) qualifies as a direct substitute with enhanced isolation voltage (4000Vrms versus 3500Vrms), providing additional safety margin. This part is available in higher inventory quantity (1594 pieces) and carries ROHS3 compliance certification. Dimensional variance is minimal (length +0.02mm, width +0.13mm), remaining within acceptable PCB layout tolerances for through-hole mounting.

VPP28-090 (Triad Magnetics) qualifies as a direct substitute with the highest inventory availability (20,958 pieces) and enhanced isolation voltage (4000Vrms). This part carries ROHS3 compliance and REACH unaffected status. Width dimension is reduced by 3.05mm compared to the main part; PCB layout verification is required to confirm clearance compatibility in space-constrained applications.

All three parts share identical electrical specifications, core construction, winding configuration, and mounting methodology. Selection between substitutes should be based on inventory availability, lead time requirements, and physical space constraints within the target application.

Frequently Asked Questions (FAQ)

Q: Can 14A-2.5R-28 be used as a direct replacement for PL2.5-28-130B without circuit modification?

A: Yes. Both parts provide identical electrical output: 2.5VA power rating, dual 115V/230V primary input, and dual secondary winding configuration with 14V parallel or 28V series output at 180mA or 90mA respectively. The enhanced isolation voltage (4000Vrms) in the substitute part does not require circuit changes and provides additional safety margin.

Q: What is the significance of the width dimension difference in VPP28-090?

A: VPP28-090 has a width of 33.32mm compared to 36.37mm in the main part, representing a 3.05mm reduction. This dimension difference requires verification against PCB layout constraints, particularly in applications with limited horizontal spacing. Length and height dimensions remain compatible across all three parts.

Q: Are all three parts suitable for the same PCB footprint?

A: Length and height dimensions are equivalent across all parts (41.28-41.30mm length, 28.58-28.60mm height). Width dimensions vary: PL2.5-28-130B and 14A-2.5R-28 are 36.37mm and 36.50mm respectively, while VPP28-090 is 33.32mm. PCB footprint design must accommodate the widest part (14A-2.5R-28 at 36.50mm) to ensure compatibility with all substitutes.

Q: Do the substitute parts carry the same compliance certifications?

A: All three parts carry RoHS compliance (RoHS Compliant or ROHS3 Compliant). The substitute parts additionally carry REACH unaffected status. All parts share identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications, confirming regulatory equivalence for export and trade purposes.

Q: What is the practical difference between 3500Vrms and 4000Vrms isolation voltage?

A: Both isolation voltages exceed standard safety requirements for this power class. The 4000Vrms rating in substitute parts provides a 14% higher isolation margin, which may be beneficial in applications with elevated EMI environments or stringent safety specifications. Circuit operation remains identical at either rating.

Q: Can these parts be interchanged mid-production?

A: Yes, provided PCB layout accommodates the width variance (maximum 36.50mm for 14A-2.5R-28). All electrical parameters, mounting type, termination style, and winding configuration are identical. Compliance certifications are equivalent across all parts.