FEP16GTD Equivalent & Substitute Parts

Part Overview

The FEP16GTD is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Series Connection rated for 400 V DC reverse voltage and 16 A average rectified current per diode. The device is packaged in a TO-220-3 through-hole format and features fast recovery characteristics with a 50 ns reverse recovery time. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

FEP16GTD

onsemiIn Stock: 2370FEP16GTD Datasheet

Current PartRFQ

SDUR3040CT

SMC Diode SolutionsIn Stock: 806SDUR3040CT Datasheet

DirectRFQ

DSEE15-06CC

IXYSIn Stock: 1845DSEE15-06CC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FEP16GTD is determined by alignment across the following critical electrical and mechanical parameters:

Voltage Rating: The substitute must support a maximum DC reverse voltage of 400 V or greater to maintain circuit protection margins.

Current Rating: The substitute must support an average rectified current of 16 A or greater per diode to handle the design load without thermal stress.

Speed Classification: The substitute must maintain fast recovery characteristics (≤ 500ns, > 200mA) to preserve switching performance and minimize reverse recovery losses.

Reverse Recovery Time: The substitute should maintain comparable or faster reverse recovery time to prevent circuit instability.

Reverse Leakage Current: The substitute must not exceed 10 µA at the rated voltage to maintain acceptable standby power consumption.

Operating Temperature Range: The substitute must support the junction temperature range of -55°C to 150°C or broader.

Mounting Type and Package: The substitute must be through-hole mounted in a TO-220-3 or compatible package format to ensure mechanical and thermal compatibility with existing PCB layouts.

Diode Configuration: The substitute must maintain a 1 Pair configuration to preserve circuit topology and signal routing.

Parameter Comparison

Engineering Selection Recommendations

SDUR3040CT (SMC Diode Solutions) is the primary direct substitute for the FEP16GTD. This part maintains identical voltage and temperature specifications, matching reverse leakage current performance, and delivers equivalent fast recovery characteristics. The SDUR3040CT is currently in active production status with ROHS3 compliance certification. The current rating of 15 A is 1 A lower than the FEP16GTD; this difference is acceptable in applications where the design load does not exceed 15 A per diode. The diode configuration differs (Common Cathode versus Series Connection), requiring verification of circuit topology compatibility before substitution. The TO-220-3 package format ensures direct mechanical and thermal compatibility with existing PCB designs.

DSEE15-06CC (IXYS) is a secondary alternative suitable for applications requiring enhanced voltage margin or extended operating temperature range. This part provides 600 V reverse voltage rating, offering 200 V additional headroom above the FEP16GTD specification. The ISOPLUS220™ package is mechanically compatible with TO-220-3 footprints in most applications. The reverse recovery time of 30 ns is superior to the FEP16GTD, reducing switching losses. However, the forward voltage drop of 1.7 V at 15 A is significantly higher than the FEP16GTD specification, resulting in increased power dissipation. The reverse leakage current of 100 µA at 600 V exceeds the FEP16GTD specification by one order of magnitude. The DSEE15-06CC is ROHS3 compliant and in active production status. Selection of this part is appropriate only when the higher voltage rating and extended temperature range provide design benefits that offset the increased forward voltage drop and leakage current.

Frequently Asked Questions (FAQ)

Q: Can the SDUR3040CT directly replace the FEP16GTD without circuit modification?

A: The SDUR3040CT matches the FEP16GTD in voltage rating, temperature range, and package format. However, the diode configuration differs: the FEP16GTD is a Series Connection pair, while the SDUR3040CT is a Common Cathode pair. Circuit topology verification is required to confirm compatibility. If the circuit design depends on the Series Connection configuration, the SDUR3040CT cannot be used without redesign.

Q: What is the significance of the 1 A current rating difference between FEP16GTD (16 A) and SDUR3040CT (15 A)?

A: The current rating represents the maximum average rectified current per diode under specified thermal conditions. If the application design load is 15 A or less per diode, the SDUR3040CT operates within its rated specification. If the design load exceeds 15 A, the SDUR3040CT will experience thermal stress and reduced reliability. Review the actual circuit current requirements before substitution.

Q: Why does the DSEE15-06CC have higher forward voltage drop than the FEP16GTD?

A: Forward voltage drop is determined by semiconductor material properties, doping profiles, and junction design. The DSEE15-06CC is rated for 600 V reverse voltage, requiring a different junction structure than the 400 V FEP16GTD. This structural difference results in higher forward voltage drop. The increased voltage drop generates additional heat during operation, requiring thermal management evaluation.

Q: Is the ISOPLUS220™ package mechanically compatible with TO-220-3 PCB footprints?

A: The ISOPLUS220™ package shares the same three-lead through-hole configuration and pin spacing as the TO-220-3 package. Mechanical compatibility is confirmed for standard PCB layouts. However, thermal interface requirements may differ due to package geometry variations. Verify thermal pad design and heatsink mounting compatibility for the specific application.

Q: What does "Product Status: Obsolete" mean for the FEP16GTD?

A: Obsolete status indicates that the FEP16GTD is no longer manufactured by onsemi and is not available for new orders from the manufacturer. Existing inventory from authorized distributors may be available for a limited time. For new designs or long-term production requirements, selection of an active substitute part is necessary to ensure supply chain continuity.

Q: Can the DSEE15-06CC be used in applications where the FEP16GTD was originally specified?

A: The DSEE15-06CC can be used if the application circuit topology is compatible with the Series Connection diode configuration and if the higher forward voltage drop and reverse leakage current do not exceed thermal or power budget limits. The 600 V rating provides additional safety margin in overvoltage conditions. Thermal analysis is required to confirm that the increased power dissipation does not cause junction temperature to exceed 175°C under worst-case operating conditions.

Q: What is the difference between "Series Connection" and "Common Cathode" diode configurations?

A: In a Series Connection configuration, the two diodes are internally connected in series, with one anode and one cathode available as external terminals. In a Common Cathode configuration, both diodes share a common cathode terminal, with two separate anode terminals. These configurations produce different voltage and current characteristics in the circuit. The specific circuit design determines which configuration is required.

Q: Are there any compliance or regulatory differences between the substitute parts?

A: The SDUR3040CT is ROHS3 compliant and REACH Affected. The FEP16GTD and DSEE15-06CC are REACH Unaffected. All three parts are classified as EAR99 for export control purposes. If the application requires REACH compliance documentation, the SDUR3040CT is the appropriate selection. Verify compliance requirements with the end-use application specifications before final part selection.