DSEC16-04AS Equivalent & Substitute Parts

Part Overview

The DSEC16-04AS is a general-purpose diode array manufactured by IXYS, configured as a 1 Pair Common Cathode rectifier with a maximum reverse voltage rating of 400 V and an average rectified current of 10 A per diode. The device is housed in a Surface Mount TO-263-3 D2PAK package and is part of the HiPerFRED™ series. This component is classified as Active product status and is RoHS3 compliant.

Equivalent and substitute parts are identified when alternative diode arrays meet the same functional requirements within specified electrical and mechanical tolerances. Substitution becomes necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining circuit performance and reliability.

Substiute Parts

DSEC16-04AS

IXYSIn Stock: 1644DSEC16-04AS Datasheet

Current PartRFQ

STTH16R04CG-TR

STMicroelectronicsIn Stock: 21963STTH16R04CG-TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSEC16-04AS are identified based on electrical and mechanical compatibility within the following criteria:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 400 V
• Mounting Type: Surface Mount
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Technology: Standard
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Equal to or greater than 10 A
• Voltage - Forward (Vf) (Max) @ If: Within acceptable forward voltage drop range
• Reverse Recovery Time (trr): Within fast recovery classification
• Current - Reverse Leakage @ Vr: Within acceptable leakage specifications
• Operating Temperature - Junction: Must encompass or exceed -55°C to 175°C range

The STTH16R04CG-TR from STMicroelectronics meets the mandatory matching parameters. However, the current rating of 8 A per diode is below the 10 A specification of the main part, which represents a functional limitation in maximum current handling capacity.

Parameter Comparison

Engineering Selection Recommendations

DSEC16-04AS (IXYS) - Primary Selection

The DSEC16-04AS is the specified component and remains the primary selection when the full 10 A average rectified current per diode is required. This part is Active product status, RoHS3 compliant, and carries REACH Unaffected designation. The HiPerFRED™ series classification indicates optimized performance characteristics for general-purpose rectification applications.

STTH16R04CG-TR (STMicroelectronics) - Conditional Substitute

The STTH16R04CG-TR is a functional substitute when circuit design permits operation at 8 A average rectified current per diode. Both parts share identical package geometry (TO-263-3 D2PAK), reverse voltage rating (400 V), and diode configuration (1 Pair Common Cathode). Both are Active product status and RoHS3 compliant.

Substitution Constraints:

The STTH16R04CG-TR exhibits the following parameter variations:

• Current rating reduced from 10 A to 8 A per diode
• Reverse recovery time increased from 30 ns to 50 ns
• Operating temperature minimum raised from -55°C to -40°C

These variations must be evaluated against specific circuit requirements. The reduced current rating limits maximum load capacity. The increased reverse recovery time may affect switching performance in high-frequency applications. The narrower temperature range restricts operation in extreme cold environments below -40°C.

Frequently Asked Questions (FAQ)

Q: Can the STTH16R04CG-TR be used as a direct replacement for the DSEC16-04AS?

A: The STTH16R04CG-TR shares the same package footprint and reverse voltage rating. However, the 8 A current rating is lower than the 10 A specification of the DSEC16-04AS. Direct substitution is only valid when circuit design operates at or below 8 A average rectified current per diode.

Q: What is the significance of the 30 ns versus 50 ns reverse recovery time difference?

A: Reverse recovery time affects switching speed and switching losses. The DSEC16-04AS at 30 ns provides faster recovery compared to the STTH16R04CG-TR at 50 ns. In applications with high switching frequencies or stringent EMI requirements, the faster recovery time of the DSEC16-04AS may be necessary.

Q: Are both parts physically compatible with the same PCB layout?

A: Yes. Both the DSEC16-04AS and STTH16R04CG-TR use the TO-263-3 D2PAK package with identical pin configuration and lead spacing. PCB footprints designed for one part accommodate the other without modification.

Q: What is the impact of the -55°C to -40°C temperature range difference?

A: The DSEC16-04AS operates from -55°C to 175°C, while the STTH16R04CG-TR operates from -40°C to 175°C. Applications requiring operation below -40°C junction temperature must use the DSEC16-04AS. Both parts support the full upper temperature limit of 175°C.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the DSEC16-04AS and STTH16R04CG-TR are RoHS3 compliant, carry Moisture Sensitivity Level 1 (Unlimited), and are classified under ECCN EAR99. Both are REACH Unaffected.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This configuration contains two diodes within a single package with a shared cathode terminal. The common cathode connection reduces the number of external leads required compared to two independent diodes, enabling the D2PAK 3-lead package format (two anodes plus one common cathode tab).

Q: How do forward voltage characteristics compare between these parts?

A: The DSEC16-04AS specifies 1.53 V forward voltage at 10 A, while the STTH16R04CG-TR specifies 1.5 V at 8 A. Forward voltage varies with current level, making direct comparison at different current ratings imprecise. At equivalent current levels, both parts exhibit comparable forward voltage characteristics.