SF1608G Equivalent & Substitute Parts

Part Overview

The SF1608G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 16 A average rectified current. The device is packaged in TO-220AB through-hole configuration and is classified as a fast recovery diode with reverse recovery time of 35 ns. This component is actively produced and RoHS3 compliant, making it suitable for industrial power conversion and rectification applications.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified voltage and current ratings, while maintaining compatibility with the TO-220 package family and fast recovery diode technology classification.

Substiute Parts

SF1608G

Taiwan Semiconductor CorporationIn Stock: 2276SF1608G Datasheet

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APT30DQ60KG

Microchip TechnologyIn Stock: 4323APT30DQ60KG Datasheet

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STTH16L06CT

STMicroelectronicsIn Stock: 7399STTH16L06CT Datasheet

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STTH16L06CTY

STMicroelectronicsIn Stock: 3229STTH16L06CTY Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SF1608G is determined by the following criteria:

Primary Electrical Parameters:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 600 V
• Current - Average Rectified (Io): Must equal or exceed 16 A
• Speed Classification: Must be Fast Recovery technology (≤ 500ns)
• Reverse Recovery Time (trr): Must be ≤ 500 ns

Package Compatibility:

• Mounting Type: Through Hole
• Package Family: TO-220 variants (TO-220-2, TO-220-3)

Compliance Requirements:

• RoHS3 Compliant
• Active product status

The substitute parts identified meet these criteria with the following considerations:

APT30DQ60KG (Microchip Technology): Exceeds current rating (30 A vs. 16 A) while maintaining 600 V reverse voltage and fast recovery characteristics. Package is TO-220-2 (two-pin configuration).

STTH16L06CTY and STTH16L06CT (STMicroelectronics): Configured as diode arrays with 1 Pair Common Cathode topology. Per-diode current rating is 10 A, with 600 V reverse voltage and fast recovery characteristics. Package is TO-220-3 (three-pin configuration).

Parameter Comparison

Engineering Selection Recommendations

APT30DQ60KG Selection Criteria: The APT30DQ60KG provides higher current capacity (30 A) compared to the SF1608G (16 A) while maintaining identical 600 V reverse voltage rating. This part is suitable for applications requiring current margin or where higher current capability is beneficial. The TO-220-2 package differs from the SF1608G TO-220-3 configuration, requiring verification of pin compatibility with existing circuit layouts. Both parts are RoHS3 compliant and actively produced.

STTH16L06CT Selection Criteria: The STTH16L06CT is a diode array with 1 Pair Common Cathode configuration, rated at 10 A per diode with 600 V reverse voltage. This part maintains TO-220-3 package compatibility with the SF1608G. The common cathode topology requires circuit design consideration for proper application. This part is RoHS3 compliant and actively produced.

STTH16L06CTY Selection Criteria: The STTH16L06CTY is functionally equivalent to STTH16L06CT with identical electrical specifications and TO-220-3 package. This part carries automotive grade qualification (AEC-Q101) and extended operating temperature range (-40 to 175°C), making it suitable for automotive and high-reliability applications. RoHS3 compliant and actively produced.

Frequently Asked Questions (FAQ)

Q: Can the APT30DQ60KG directly replace the SF1608G in all applications?

A: The APT30DQ60KG maintains the same 600 V reverse voltage and fast recovery characteristics as the SF1608G. However, the package configuration differs: APT30DQ60KG uses TO-220-2 (two-pin) while SF1608G uses TO-220-3 (three-pin). Pin-to-pin compatibility must be verified against the specific circuit layout before substitution.

Q: What is the difference between the STTH16L06CT and STTH16L06CTY?

A: Both parts are diode arrays with identical electrical specifications and TO-220-3 package configuration. The STTH16L06CTY includes automotive grade qualification (AEC-Q101) and operates across a wider temperature range (-40 to 175°C) compared to STTH16L06CT (maximum 175°C). Selection depends on application requirements for automotive qualification and low-temperature operation.

Q: Why do the STTH16L06CT and STTH16L06CTY show 10 A per diode instead of 16 A total?

A: These parts are configured as diode arrays with 1 Pair Common Cathode topology, containing two diodes in a single package. The 10 A rating applies to each individual diode within the array. Circuit design must account for this configuration when evaluating current capacity.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The SF1608G and all identified substitute parts (APT30DQ60KG, STTH16L06CT, STTH16L06CTY) are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of reverse recovery time differences between these parts?

A: The SF1608G has a reverse recovery time of 35 ns, while the APT30DQ60KG has 30 ns and the STMicroelectronics parts have 55 ns. All values remain within the fast recovery classification (≤ 500 ns). Shorter reverse recovery time reduces switching losses in high-frequency applications. The specific impact depends on circuit operating frequency and switching characteristics.

Q: Can the SF1608G be used in applications requiring the higher current rating of the APT30DQ60KG?

A: No. The SF1608G is rated for 16 A average rectified current. Applications requiring 30 A operation must use the APT30DQ60KG or equivalent higher-rated device. Using an undersized component risks thermal stress and premature failure.