FES16FT Equivalent & Substitute Parts

Part Overview

The FES16FT is a general-purpose rectifier diode manufactured by onsemi, rated for 300 V DC reverse voltage and 16 A average rectified current in a Through Hole TO-220-2 package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The FES16FT operates across a junction temperature range of -65°C to 150°C and features fast recovery characteristics with a reverse recovery time of 50 ns.

Substiute Parts

FES16FT

onsemiIn Stock: 9773FES16FT Datasheet

Current PartRFQ

FES16FT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1314FES16FT-E3/45 Datasheet

DirectRFQ

STTH15L06D

STMicroelectronicsIn Stock: 17333STTH15L06D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FES16FT are identified based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

• Voltage - DC Reverse (Vr) rating equal to or greater than 300 V
• Current - Average Rectified (Io) rating equal to or greater than 16 A
• Through Hole mounting type
• TO-220-2 or compatible package configuration
• Fast Recovery speed classification
• Operating temperature range supporting -65°C to 150°C minimum

Substitute Classification:

Direct Equivalent: FES16FT-E3/45 matches the FES16FT across all critical electrical parameters (300 V, 16 A, 50 ns reverse recovery time) and maintains identical package specifications. This part is manufactured by Vishay General Semiconductor - Diodes Division and carries Active product status with RoHS3 compliance.

Similar Substitute: STTH15L06D provides functional substitution with higher voltage rating (600 V) and comparable current rating (15 A). This part is manufactured by STMicroelectronics and carries Active product status with RoHS3 compliance. The higher voltage rating accommodates applications requiring additional voltage margin, though the current rating is 1 A lower than the original specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement:

The FES16FT-E3/45 is the primary substitute for the obsolete FES16FT. This part maintains identical electrical specifications (300 V, 16 A, 50 ns reverse recovery time) and package configuration. The FES16FT-E3/45 carries Active product status and RoHS3 compliance, providing regulatory alignment for new designs and procurement continuity for existing applications. Forward voltage characteristics are equivalent at rated current levels.

For Applications Requiring Voltage Margin:

The STTH15L06D provides substitution for applications where higher reverse voltage rating (600 V) is beneficial. This part is manufactured by STMicroelectronics with Active product status and RoHS3 compliance. The current rating is 15 A, which is 1 A lower than the FES16FT specification. The reverse recovery time is 85 ns, compared to 50 ns for the original part. The maximum junction temperature rating is 175°C, exceeding the FES16FT specification of 150°C. This substitute is suitable for designs where voltage derating or thermal margin is a design consideration.

Both substitute parts maintain Through Hole mounting and TO-220-2 package compatibility, ensuring mechanical interchangeability in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the FES16FT-E3/45 be used as a direct replacement for the FES16FT?

A: Yes. The FES16FT-E3/45 maintains identical voltage (300 V), current (16 A), and reverse recovery time (50 ns) specifications. Both parts use the TO-220-2 package and Through Hole mounting. The FES16FT-E3/45 is manufactured by Vishay General Semiconductor - Diodes Division and carries Active product status.

Q: What are the differences between the FES16FT-E3/45 and STTH15L06D?

A: The FES16FT-E3/45 matches the original FES16FT across all electrical parameters. The STTH15L06D provides a higher reverse voltage rating (600 V versus 300 V) but has a lower current rating (15 A versus 16 A) and longer reverse recovery time (85 ns versus 50 ns). Both parts are compatible with TO-220-2 package footprints.

Q: Is the STTH15L06D suitable for applications designed for the FES16FT?

A: The STTH15L06D can substitute the FES16FT in applications where the 1 A current reduction and 85 ns reverse recovery time are acceptable. The higher voltage rating (600 V) provides additional voltage margin. Applications requiring the full 16 A current rating or the faster 50 ns recovery time should use the FES16FT-E3/45.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the FES16FT-E3/45 and STTH15L06D carry RoHS3 compliance certification. Both parts are REACH Unaffected.

Q: What is the package compatibility between these parts?

A: All three parts (FES16FT, FES16FT-E3/45, and STTH15L06D) use the TO-220-2 package with Through Hole mounting. They are mechanically interchangeable on standard PCB layouts designed for this package type.

Q: Why is the FES16FT classified as obsolete?

A: The FES16FT is listed as obsolete by onsemi. The FES16FT-E3/45 provides equivalent functionality with Active product status from an alternative manufacturer, ensuring continued availability and regulatory compliance for new designs.