SF806GHC0G Equivalent & Substitute Parts

Part Overview

The SF806GHC0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 8 A average rectified current. The device is packaged in a TO-220AB through-hole configuration and is qualified to AEC-Q101 automotive standards. This part is currently active in production with 1076 units in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. The SF806GHC0G may require substitution due to supply constraints, lead time requirements, or inventory availability.

Substiute Parts

SF806GHC0G

Taiwan Semiconductor CorporationIn Stock: 1111SF806GHC0G Datasheet

Current PartRFQ

DUR1040CT

Littelfuse Inc.In Stock: 1923DUR1040CT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF806GHC0G is permissible when the alternative component maintains the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-3
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA
• Operating Temperature Range: -55°C to 150°C minimum
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal to or greater than 8 A per diode element
• Voltage - Forward (Vf) (Max): Equal to or less than 1.3 V at rated current
• Reverse Recovery Time (trr): Equal to or less than 35 ns
• Current - Reverse Leakage @ Vr: Equal to or less than 10 µA @ 400 V

The DUR1040CT is identified as a substitute part. However, this part is configured as a diode array with 1 Pair Common Cathode topology, with a per-diode current rating of 5 A. This configuration and current rating differ from the single-diode SF806GHC0G topology and 8 A rating.

Parameter Comparison

Engineering Selection Recommendations

SF806GHC0G (Primary Selection): The SF806GHC0G is the specified component for applications requiring an 8 A single-diode rectifier at 400 V. This part maintains active production status, AEC-Q101 automotive qualification, and ROHS3 compliance. Current inventory of 1076 units supports immediate availability.

DUR1040CT (Conditional Substitution): The DUR1040CT is a diode array configuration with per-diode current rating of 5 A, which is lower than the SF806GHC0G 8 A rating. The DUR1040CT exhibits higher reverse recovery time (45 ns versus 35 ns) and higher reverse leakage current (30 µA @ 100 V versus 10 µA @ 400 V). The DUR1040CT maintains matching voltage ratings, temperature range, package type, and compliance certifications.

Substitution of DUR1040CT for SF806GHC0G is permissible only in circuit designs where the per-diode current requirement does not exceed 5 A and where the diode array common-cathode topology is compatible with the application circuit. Applications requiring the full 8 A single-diode performance cannot use DUR1040CT as a direct substitute.

Frequently Asked Questions (FAQ)

Q: Can the DUR1040CT replace the SF806GHC0G in all applications?

A: No. The DUR1040CT is a diode array with 5 A per-diode rating, while the SF806GHC0G is a single diode rated for 8 A. Substitution is valid only when circuit design accommodates the lower per-diode current and the common-cathode array topology.

Q: What is the significance of the diode array configuration in the DUR1040CT?

A: The DUR1040CT contains two diodes with a common cathode connection. This topology differs fundamentally from the single-diode SF806GHC0G. Circuit compatibility depends on whether the application can utilize the array configuration and whether current distribution across the diode pair meets design requirements.

Q: Are the voltage and temperature ratings equivalent between these parts?

A: Yes. Both parts are rated for 400 V DC reverse voltage and operate across the -55°C to 150°C junction temperature range. Forward voltage drop is identical at 1.3 V maximum within their respective current ratings.

Q: What is the impact of the higher reverse recovery time in the DUR1040CT?

A: The DUR1040CT exhibits 45 ns reverse recovery time compared to 35 ns in the SF806GHC0G. This 10 ns difference may affect switching performance in high-frequency applications. Applications sensitive to reverse recovery characteristics should evaluate this parameter against design specifications.

Q: Do both parts meet automotive qualification standards?

A: The SF806GHC0G carries AEC-Q101 automotive qualification. The DUR1040CT specifications provided do not include automotive qualification documentation. Applications requiring automotive-grade components should confirm qualification status with the manufacturer before substitution.

Q: Are the packages physically identical?

A: Both parts use TO-220-3 through-hole packaging and TO-220AB supplier device packages. Physical mounting and thermal interface characteristics are compatible. PCB layout modifications are not required for package substitution.