ST7-16B53 Equivalent & Substitute Parts

Part Overview

The ST7-16B53 is a 36VA laminated core power transformer manufactured by Pulse Electronics, designed for through-hole mounting applications. This split bobbin plug-in transformer features dual secondary windings capable of parallel (8V, 4.5A) or series (16V, 2.25A) output configurations from a 115V primary input. The component is actively produced and maintains full RoHS compliance with 2500Vrms isolation rating. Substitute parts are identified to provide equivalent electrical and mechanical performance for applications requiring component alternatives due to inventory availability, supply chain considerations, or design flexibility.

Substiute Parts

ST7-16B53

Pulse ElectronicsIn Stock: 872ST7-16B53 Datasheet

Current PartRFQ

F16-2250

Triad MagneticsIn Stock: 917F16-2250 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The F16-2250 manufactured by Triad Magnetics qualifies as a direct substitute based on the following critical parameters:

• Identical power rating: 36VA
• Matching primary voltage: 115V
• Identical secondary voltage configuration: Parallel 8V / Series 16V
• Matching output current specifications: Parallel 4.5A / Series 2.25A
• Identical core type: Laminated
• Matching mounting type: Through Hole
• Matching termination style: PC Pin
• Identical isolation voltage: 2500Vrms
• Equivalent physical dimensions within tolerance
• Matching product status: Active

Both transformers employ dual secondary windings with identical electrical characteristics, enabling direct functional replacement in applications requiring either parallel or series secondary output configurations.

Parameter Comparison

Engineering Selection Recommendations

Both the ST7-16B53 and F16-2250 maintain active product status with full regulatory compliance. The ST7-16B53 carries RoHS Compliant certification, while the F16-2250 meets the more recent ROHS3 standard. Both transformers satisfy REACH requirements and fall under identical export classification (EAR99). Selection between these parts should be based on supply availability, lead time requirements, and packaging preferences (Pulse Electronics supplies in standard packaging; Triad Magnetics supplies in box packaging). The negligible width dimension variance (0.08mm) presents no functional impact for through-hole PCB mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the F16-2250 directly replace the ST7-16B53 in existing designs?

A: Yes. Both transformers provide identical electrical specifications across all critical parameters: 36VA power rating, 115V primary input, dual secondary windings with 8V parallel and 16V series configurations, matching output currents, and equivalent isolation voltage. Physical dimensions are within tolerance for through-hole mounting.

Q: Are there differences in RoHS compliance between these parts?

A: The ST7-16B53 carries RoHS Compliant certification, while the F16-2250 meets ROHS3 Compliant standards. ROHS3 represents an updated compliance framework. Both satisfy current regulatory requirements, and the difference does not affect functional compatibility.

Q: What is the significance of the packaging difference?

A: The ST7-16B53 is supplied in standard packaging, while the F16-2250 is supplied in box packaging. This distinction affects logistics and storage but does not impact electrical or mechanical performance.

Q: Are the physical dimensions identical?

A: Dimensions are equivalent within engineering tolerance. Length is identical at 66.80mm, height is identical at 39.62mm, and width differs by 0.08mm (55.63mm versus 55.55mm), which is negligible for PCB mounting applications.

Q: Do both transformers support parallel and series secondary configurations?

A: Yes. Both the ST7-16B53 and F16-2250 feature dual secondary windings enabling parallel output (8V, 4.5A) or series output (16V, 2.25A) configurations from the same 115V primary input.