F24-250 Equivalent & Substitute Parts

Part Overview

The F24-250 is an active laminated core power transformer manufactured by Triad Magnetics, rated at 6VA with through-hole mounting and PC pin termination. This Class 2/3 transformer operates with a single primary winding at 115V and dual secondary windings configured for parallel 12V or series 24V output. The part is ROHS3 compliant and maintains 2500Vrms isolation voltage. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, mounting characteristics, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional compromise.

Substiute Parts

F24-250

Triad MagneticsIn Stock: 1109F24-250 Datasheet

Current PartRFQ

164F24

Hammond ManufacturingIn Stock: 959164F24 Datasheet

SimilarRFQ

3FS-424

TamuraIn Stock: 9173FS-424 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F24-250 is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Primary voltage of 115V, secondary voltage configuration supporting both parallel 12V and series 24V modes, maximum output current of 500mA (parallel) and 250mA (series), and 6VA power rating must be identical.

Core and Winding Configuration: Laminated core type, single primary winding, dual secondary windings, and absence of center tap must match exactly.

Mechanical and Mounting Characteristics: Through-hole mounting type and PC pin termination style are required for circuit board integration compatibility.

Isolation and Safety: 2500Vrms isolation voltage and Class 2/3 rating must be maintained.

Compliance and Regulatory: ROHS3 compliance and REACH unaffected status ensure regulatory alignment.

Parts meeting all these criteria are classified as direct substitutes. Dimensional variations within manufacturing tolerances and packaging format differences do not preclude substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

All three parts—F24-250, 164F24, and 3FS-424—are active products with identical electrical specifications and core functionality. Selection between these substitutes is based on availability, packaging format, and dimensional fit within the target application.

F24-250 (Triad Magnetics): Primary choice when Split Pack™ series designation and box packaging are specified. ROHS3 compliant with REACH unaffected status. Inventory: 1041 units.

164F24 (Hammond Manufacturing): Direct electrical and mechanical equivalent with identical dimensions (41.28mm L x 33.32mm W x 33.32mm H). ROHS3 compliant with REACH unaffected status. Bulk packaging format. Inventory: 901 units.

3FS-424 (Tamura): Functionally equivalent with minor dimensional variations (41.50mm L x 34.83mm W x 34.55mm H). RoHS compliant. Tube packaging format. Inventory: 900 units. Dimensional differences require verification of PCB layout clearance in space-constrained applications.

All parts carry identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications, confirming regulatory alignment for export and procurement purposes.

Frequently Asked Questions (FAQ)

Q: Can the 164F24 replace the F24-250 in an existing circuit design?

A: Yes. The 164F24 is electrically and mechanically identical to the F24-250. Both share the same primary voltage (115V), secondary voltage configuration (parallel 12V, series 24V), output current ratings (500mA parallel, 250mA series), core type (laminated), winding configuration (single primary, dual secondary), mounting type (through hole), and termination style (PC pin). Dimensions are identical at 41.28mm L x 33.32mm W x 33.32mm H.

Q: What are the dimensional differences between the F24-250 and 3FS-424?

A: The 3FS-424 has slightly larger dimensions: 41.50mm L x 34.83mm W x 34.55mm H, compared to the F24-250 at 41.28mm L x 33.32mm W x 33.32mm H. These differences are approximately 0.22mm in length, 1.51mm in width, and 1.23mm in height. PCB layout verification is required to confirm clearance in applications with tight spatial constraints.

Q: Are all three parts RoHS compliant?

A: Yes. The F24-250 and 164F24 are ROHS3 compliant. The 3FS-424 is RoHS compliant. All three parts meet RoHS requirements for hazardous substance restrictions.

Q: What is the difference in packaging between these parts?

A: F24-250 is supplied in box packaging, 164F24 in bulk packaging, and 3FS-424 in tube packaging. Packaging format does not affect electrical or mechanical performance and is determined by procurement and inventory management requirements.

Q: Do all three parts have the same isolation voltage rating?

A: Yes. All three parts maintain 2500Vrms isolation voltage, meeting Class 2/3 safety requirements.

Q: Which part should be selected for new designs?

A: Selection is based on availability, packaging preference, and dimensional fit. All three parts are active products with equivalent electrical specifications. The F24-250 and 164F24 are dimensionally identical and interchangeable. The 3FS-424 requires dimensional verification due to minor size variations.

Q: Are there any compliance differences between the three parts?

A: The F24-250 and 164F24 both carry ROHS3 compliance and REACH unaffected status. The 3FS-424 is RoHS compliant with REACH status not specified in available documentation. All three share identical ECCN (EAR99) and HTSUS (8504.31.4035) classifications.