FS48-250 Laminated Power Transformer Equivalent & Substitute Parts

Part Overview

The FS48-250 is a 12VA laminated core power transformer manufactured by Triad Magnetics, designed for through-hole mounting applications. This transformer features dual primary and secondary windings, supporting both parallel (24V, 500mA) and series (48V, 250mA) output configurations. The part is currently active in production and maintains full stock availability. Equivalent substitute parts are identified to provide procurement flexibility, alternative sourcing options, and continuity of supply for applications requiring identical electrical and mechanical specifications.

Substiute Parts

FS48-250

Triad MagneticsIn Stock: 747FS48-250 Datasheet

Current PartRFQ

162G48

Hammond ManufacturingIn Stock: 1246162G48 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FS48-250 are identified based on strict equivalence of the following critical parameters:

Electrical Equivalence Criteria:

• Identical power rating (12VA)
• Matching primary voltage inputs (115V, 230V)
• Matching secondary voltage outputs in both parallel (24V) and series (48V) configurations
• Identical maximum output current specifications (500mA parallel, 250mA series)
• Matching dual primary and dual secondary winding configuration
• Equivalent isolation voltage (2500Vrms)

Mechanical Equivalence Criteria:

• Through-hole mounting type
• PC pin termination style
• Laminated core construction
• Compatible footprint dimensions (47.63mm L x 39.67mm W)
• Height compatibility for PCB assembly

Compliance Equivalence Criteria:

• ROHS3 compliance
• REACH unaffected status
• Matching ECCN and HTSUS classifications

The Hammond Manufacturing 162G48 meets all electrical and mechanical equivalence requirements and qualifies as a direct substitute for the FS48-250.

Parameter Comparison

Engineering Selection Recommendations

Both the FS48-250 and 162G48 are active production parts with full regulatory compliance. Selection between these parts should be based on the following factors:

Procurement Considerations: The FS48-250 (Triad Magnetics) is available in box packaging with 705 units in current stock. The 162G48 (Hammond Manufacturing) is available in bulk packaging with 1148 units in current stock. Bulk packaging availability may provide cost advantages for high-volume applications.

Physical Compatibility: The 162G48 has a maximum seated height of 38.10mm compared to the FS48-250 at 36.50mm. This 1.60mm height difference must be evaluated for PCB assembly clearance in space-constrained applications.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and safety standards. Both share identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications for export and tariff purposes.

Series Designation: The FS48-250 belongs to the Split Pack™ series, while the 162G48 belongs to the Hammond 162 series. Series designation does not affect electrical or mechanical compatibility for direct substitution applications.

Frequently Asked Questions (FAQ)

Q: Can the 162G48 be used as a direct replacement for the FS48-250 in existing designs?

A: Yes. The 162G48 meets all electrical specifications (12VA power rating, dual 115V/230V primary, dual 24V/48V secondary, 500mA/250mA output current) and mechanical requirements (through-hole mounting, PC pin termination, laminated core, identical footprint dimensions). The 1.60mm height difference (38.10mm vs. 36.50mm) must be verified for PCB clearance compatibility.

Q: Are there any winding configuration differences between these parts?

A: No. Both the FS48-250 and 162G48 feature identical dual primary and dual secondary winding configurations with no center tap. Both support parallel (24V, 500mA) and series (48V, 250mA) output modes.

Q: What is the significance of the packaging difference (Box vs. Bulk)?

A: Packaging type affects inventory management and procurement logistics but does not impact electrical or mechanical performance. Box packaging (FS48-250) is typically used for smaller orders, while bulk packaging (162G48) is standard for high-volume procurement.

Q: Does the height difference affect PCB assembly?

A: The 162G48 seated height of 38.10mm is 1.60mm taller than the FS48-250 at 36.50mm. This difference must be evaluated against available PCB clearance, component spacing, and enclosure height constraints in the target application.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the FS48-250 and 162G48 are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance restrictions.

Q: What is the isolation voltage specification, and is it identical for both parts?

A: Both parts provide 2500Vrms isolation voltage, meeting standard safety requirements for transformer applications requiring galvanic isolation between primary and secondary circuits.

Q: Can these transformers be used in series or parallel configurations?

A: Yes. Both transformers support dual winding configurations enabling series connection (48V output at 250mA maximum) and parallel connection (24V output at 500mA maximum). Winding configuration must be verified against circuit design requirements.