6025-028 Laminated Power Transformer Equivalent & Substitute Parts

Part Overview

The 6025-028 is a 12VA laminated core power transformer manufactured by API Delevan Inc., designed for through-hole mounting applications. It features dual primary windings supporting 115V or 230V input, and dual secondary windings providing parallel 14V or series 28V output configurations. The transformer is rated for maximum 840mA parallel output or 420mA series output current.

This part carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this transformer specification.

Key Parameters

Parameter	Value
Power Rating	12VA
Primary Voltage Options	115V, 230V
Secondary Voltage (Parallel)	14V
Secondary Voltage (Series)	28V
Maximum Output Current (Parallel)	840mA
Maximum Output Current (Series)	420mA
Core Type	Laminated
Primary Windings	Dual
Secondary Windings	Dual
Center Tap	No
Mounting Type	Through Hole
Termination Style	PC Pin
Isolation Voltage	2500Vrms
Physical Dimensions (L x W)	47.63mm x 39.67mm
Height (Seated Max)	36.50mm
Weight	0.7 lb (317.51 g)

Substitute Part Grouping Explanation

Substitution of the 6025-028 is determined by strict equivalence across all electrical and mechanical parameters. The substitute relationship is based on the following criteria:

Electrical Parameters (Must Match Exactly):

Power rating: 12VA
Primary voltage configuration: Dual windings supporting 115V and 230V
Secondary voltage outputs: Parallel 14V and series 28V
Output current ratings: Parallel 840mA and series 420mA
Isolation voltage: 2500Vrms
Winding configuration: Dual primary, dual secondary, no center tap

Mechanical Parameters (Must Match Exactly):

Core type: Laminated
Mounting type: Through hole
Termination style: PC pin
Physical dimensions: 47.63mm L x 39.67mm W x 36.50mm height (seated max)
Weight: 0.7 lb (317.51 g)

The 6025R-028 meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Parameter	6025-028 (Main Part)	6025R-028 (Substitute)	Match Status
Manufacturer	API Delevan Inc.	API Delevan Inc.	Identical
Power Rating	12VA	12VA	Identical
Primary Voltage	115V, 230V	115V, 230V	Identical
Secondary Voltage (Parallel)	14V	14V	Identical
Secondary Voltage (Series)	28V	28V	Identical
Output Current (Parallel Max)	840mA	840mA	Identical
Output Current (Series Max)	420mA	420mA	Identical
Core Type	Laminated	Laminated	Identical
Primary Windings	Dual	Dual	Identical
Secondary Windings	Dual	Dual	Identical
Center Tap	No	No	Identical
Mounting Type	Through Hole	Through Hole	Identical
Termination Style	PC Pin	PC Pin	Identical
Isolation Voltage	2500Vrms	2500Vrms	Identical
Dimensions (L x W)	47.63mm x 39.67mm	47.63mm x 39.67mm	Identical
Height (Seated Max)	36.50mm	36.50mm	Identical
Weight	0.7 lb (317.51 g)	0.7 lb (317.51 g)	Identical
Product Status	Obsolete	Active	Substitute is active
RoHS Compliance	Non-compliant	ROHS3 Compliant	Substitute offers improved compliance

Engineering Selection Recommendations

The 6025R-028 is the direct substitute for the obsolete 6025-028. Both parts are manufactured by API Delevan Inc. and share identical electrical and mechanical specifications across all functional parameters.

Key Selection Factors:

Product Status: The 6025-028 is obsolete, while the 6025R-028 maintains active product status. This ensures ongoing availability and manufacturer support for the 6025R-028.

Regulatory Compliance: The 6025R-028 is ROHS3 compliant, whereas the 6025-028 is non-compliant. For applications subject to RoHS regulations or requiring compliance documentation, the 6025R-028 is the appropriate selection.

Functional Equivalence: All electrical parameters, mechanical dimensions, mounting characteristics, and performance specifications are identical between the two parts. The 6025R-028 provides complete functional replacement without circuit redesign or board layout modification.

Supply Continuity: With 912 pieces in stock, the 6025R-028 offers superior supply chain availability compared to the obsolete 6025-028.

Frequently Asked Questions (FAQ)

Q: Can the 6025R-028 be used as a direct replacement for the 6025-028 without circuit modifications?

A: Yes. The 6025R-028 is electrically and mechanically identical to the 6025-028. All voltage ratings, current ratings, winding configurations, mounting type, termination style, and physical dimensions match exactly. No circuit redesign or PCB layout changes are required.

Q: What is the difference between the 6025-028 and 6025R-028?

A: The primary differences are product status and regulatory compliance. The 6025-028 is obsolete and RoHS non-compliant. The 6025R-028 is an active product with ROHS3 compliance. All functional specifications are identical.

Q: Are the physical dimensions identical between these two transformers?

A: Yes. Both parts have identical dimensions of 47.63mm length x 39.67mm width, with a maximum seated height of 36.50mm. Both weigh 0.7 lb (317.51 g). They are pin-compatible for through-hole mounting applications.

Q: Does the 6025R-028 support the same voltage configurations as the 6025-028?

A: Yes. Both transformers feature dual primary windings supporting 115V or 230V input, and dual secondary windings providing parallel 14V or series 28V output. Maximum output current ratings are identical: 840mA in parallel configuration and 420mA in series configuration.

Q: What is the isolation voltage rating for the 6025R-028?

A: The isolation voltage rating is 2500Vrms, identical to the 6025-028.

Q: Is the 6025R-028 available in stock?

A: Yes. The 6025R-028 has 912 pieces in stock as new original inventory.

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