API Delevan 6494-028 Laminated Power Transformer Equivalent & Substitute Parts

Part Overview

The API Delevan 6494-028 is a 25VA laminated core power transformer designed for chassis mount applications with dual primary and secondary windings. The unit supports configurable voltage outputs through series and parallel winding configurations, delivering either 14V at 1.86A (parallel) or 28V at 900mA (series) from a 115V or 230V primary input.

The 6494-028 carries an obsolete product status, which necessitates identification of active equivalent components for new designs, repairs, and ongoing system support. The original part is non-RoHS compliant and lacks current regulatory certifications.

Substiute Parts

6494-028

API Delevan Inc.In Stock: 9196494-028 Datasheet

Current PartRFQ

6494R-028

API Delevan Inc.In Stock: 10236494R-028 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 6494-028 is based on electrical and mechanical parameter equivalence. The active substitute part 6494R-028 maintains identical specifications across all critical functional parameters:

Electrical Equivalence Criteria:

• Identical power rating (25VA)
• Matching primary voltage inputs (115V, 230V)
• Identical secondary voltage configurations (14V parallel, 28V series)
• Matching output current specifications (1.86A parallel, 900mA series)
• Equivalent winding configurations (dual primary, dual secondary)
• Identical isolation voltage rating (4000Vrms)

Mechanical Equivalence Criteria:

• Identical core type (laminated)
• Matching physical dimensions (71.44mm L × 47.63mm W)
• Identical height specification (58.74mm seated maximum)
• Identical mounting type (chassis mount)
• Identical termination style (solder, quick connect)

The 6494R-028 is the direct active replacement manufactured by API Delevan Inc., with current product status and enhanced regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The 6494R-028 is the direct functional and mechanical equivalent of the obsolete 6494-028. Selection of the 6494R-028 is based on the following engineering factors:

Product Status: The 6494-028 is classified as obsolete, indicating discontinued manufacturing and limited availability. The 6494R-028 maintains active product status with current manufacturing support and documented inventory availability (960 pieces in stock versus 846 pieces for the obsolete variant).

Regulatory Compliance: The 6494R-028 achieves ROHS3 compliance and carries REACH Unaffected designation, meeting current environmental and hazardous substance regulations. The original 6494-028 is non-RoHS compliant and lacks REACH documentation.

Export Classification: The 6494R-028 is classified under ECCN EAR99 with HTSUS code 8504.31.4035, providing clear regulatory classification for international commerce. The obsolete 6494-028 carries an OBSOLETE ECCN designation.

Electrical and Mechanical Compatibility: All functional parameters, physical dimensions, mounting specifications, and termination styles are identical between the two parts, ensuring direct substitution without circuit redesign or mechanical modification.

Frequently Asked Questions (FAQ)

Q: Can the 6494R-028 be used as a direct replacement for the 6494-028 in existing designs?

A: Yes. The 6494R-028 is electrically and mechanically equivalent to the 6494-028 across all specified parameters. Identical voltage ratings, current capacities, winding configurations, physical dimensions, mounting type, and termination style enable direct substitution without circuit modification or mechanical rework.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: power rating (25VA), primary voltage inputs (115V, 230V), secondary voltage outputs (14V parallel, 28V series), maximum output currents (1.86A parallel, 900mA series), winding configuration (dual primary, dual secondary), and isolation voltage (4000Vrms). The 6494R-028 matches all these specifications.

Q: What are the mechanical requirements for substitution?

A: Mechanical compatibility requires matching core type (laminated), physical dimensions (71.44mm L × 47.63mm W × 58.74mm H seated), mounting configuration (chassis mount), and termination style (solder, quick connect). The 6494R-028 satisfies all mechanical requirements.

Q: Why is the 6494-028 listed as obsolete?

A: The 6494-028 has been discontinued by the manufacturer. The 6494R-028 represents the current active production equivalent, ensuring ongoing availability and support for new designs and field replacements.

Q: Does the 6494R-028 offer any advantages over the 6494-028?

A: The 6494R-028 maintains identical electrical and mechanical specifications while providing enhanced regulatory compliance. It achieves ROHS3 certification and REACH Unaffected status, whereas the 6494-028 is non-RoHS compliant. The 6494R-028 also carries current ECCN classification (EAR99) and HTSUS coding for clear export compliance.

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

A: No. Both parts feature identical dual primary and dual secondary winding configurations, enabling the same series and parallel voltage output options. No reconfiguration is required when substituting the 6494R-028 for the 6494-028.

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

A: Both the 6494-028 and 6494R-028 provide 4000Vrms isolation voltage. This specification is unchanged in the substitute part.

Q: Are the termination options the same on both parts?

A: Yes. Both parts support identical termination styles: solder and quick connect. Existing wiring and connection methods are compatible without modification.