Equivalent & Substitute Parts for F5-24 Laminated Power Transformer

Part Overview

The F5-24 is a laminated core power transformer manufactured by Triad Magnetics, rated at 12VA with a 115V primary and 24V secondary output. This chassis mount transformer is designed for applications requiring isolated AC power conversion with a maximum output current of 500mA. The part is currently active in production and maintains full RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when inventory requirements necessitate alternative manufacturers.

Key Parameters

Parameter	Value
Power Rating	12VA
Primary Voltage	115V
Secondary Voltage	24V
Maximum Output Current	500mA
Core Type	Laminated
Primary Winding Configuration	Single
Secondary Winding Configuration	Single with Center Tap
Mounting Type	Chassis Mount
Isolation Voltage	2500VAC / 2500Vrms
Termination Style	Solder, Quick Connect

Substitute Part Grouping Explanation

Substitution eligibility for the F5-24 is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Primary voltage (115V), secondary voltage (24V), power rating (12VA), maximum output current (500mA), and isolation voltage (2500VAC/Vrms) must be identical. The secondary winding must include a center tap configuration.

Mechanical Specifications: Mounting type must be chassis mount with compatible termination style (Solder, Quick Connect). Physical dimensions and height must accommodate the same mounting footprint within standard tolerance ranges.

Compliance & Status: Both parts must maintain active product status and RoHS3 compliance. REACH and ECCN classifications must align.

The Signal Transformer model 241-5-24 meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Parameter	F5-24 (Triad Magnetics)	241-5-24 (Signal Transformer)	Match Status
Power Rating	12VA	12VA	Identical
Primary Voltage	115V	115V	Identical
Secondary Voltage	24V	24V	Identical
Maximum Output Current	500mA	500mA	Identical
Core Type	Laminated	Laminated	Identical
Primary Winding(s)	Single	Single	Identical
Secondary Winding(s)	Single with Center Tap	Single with Center Tap	Identical
Mounting Type	Chassis Mount	Chassis Mount	Identical
Termination Style	Solder, Quick Connect - 0.187" (4.7mm)	Solder, Quick Connect	Compatible
Isolation Voltage	2500VAC	2500Vrms	Equivalent
Length	71.42mm	71.40mm	Equivalent
Width	34.93mm	36.30mm	Compatible
Height (Seated Max)	41.28mm	42.80mm	Compatible
Weight	0.7 lb (317.51 g)	0.7 lb (317.51 g)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Product Status	Active	Active	Identical
ECCN	EAR99	EAR99	Identical
HTSUS Code	8504.31.4035	8504.31.4035	Identical

Engineering Selection Recommendations

Direct Substitution: The Signal Transformer 241-5-24 is a direct substitute for the Triad Magnetics F5-24. Both parts are active products with identical electrical specifications, core type, winding configuration, and compliance certifications. Physical dimensions are within compatible ranges for standard chassis mount applications.

Sourcing Considerations: The 241-5-24 is available in higher inventory quantity (1202 units) compared to the F5-24 (771 units), making it suitable for applications where extended lead times or supply continuity is a concern. Both parts carry identical RoHS3, REACH, and ECCN classifications, ensuring regulatory compliance across applications.

Packaging Difference: The F5-24 is supplied in bulk packaging, while the 241-5-24 is supplied in box packaging. This distinction affects handling and storage but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 241-5-24 be used as a direct replacement for the F5-24 in existing designs?

A: Yes. The 241-5-24 meets all electrical and mechanical specifications required for direct substitution. Identical primary voltage (115V), secondary voltage (24V), power rating (12VA), output current (500mA), isolation voltage (2500VAC/Vrms), and mounting type (chassis mount) ensure functional equivalence. Physical dimensions are compatible within standard tolerance ranges.

Q: Are there any compliance or certification differences between these parts?

A: No. Both the F5-24 and 241-5-24 maintain identical RoHS3 compliance status, REACH classification, and ECCN designation (EAR99). Both are classified under the same HTSUS code (8504.31.4035).

Q: What is the difference between the packaging options?

A: The F5-24 is supplied in bulk packaging, while the 241-5-24 is supplied in box packaging. This affects storage and handling procedures but does not alter electrical performance or mechanical compatibility.

Q: Are the physical dimensions identical?

A: Dimensions are compatible. Length measurements are equivalent (71.42mm vs. 71.40mm). Width and height show minor variations (width: 34.93mm vs. 36.30mm; height: 41.28mm vs. 42.80mm) that remain within acceptable tolerances for standard chassis mount applications.

Q: Do both parts include center tap secondary windings?

A: Yes. Both the F5-24 and 241-5-24 feature single secondary windings with center tap configuration, enabling split-rail power supply designs and other center-tap dependent applications.

Q: What termination options are available?

A: Both parts use solder and quick connect termination styles. The F5-24 specifies 0.187" (4.7mm) quick connect terminals, while the 241-5-24 specifies compatible quick connect termination without dimensional specification. Both support solder termination for permanent connections.

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