SBG1640CT Equivalent & Substitute Parts

Part Overview

The SBG1640CT is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common cathode with a maximum reverse voltage of 40 V and average rectified current of 16 A per diode. The component is packaged in TO-263-3 (D2PAK) surface mount configuration and is classified as obsolete product status. Due to its obsolete classification, identification of equivalent substitute components is necessary to maintain design continuity and ensure continued availability for production and repair applications.

Substiute Parts

SBG1640CT

Diodes IncorporatedIn Stock: 2289SBG1640CT Datasheet

Current PartRFQ

STPS2545CGY-TR

STMicroelectronicsIn Stock: 3116STPS2545CGY-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBG1640CT is determined by the following critical parameters that must be maintained or exceeded:

Configuration Requirements: The substitute component must maintain 1 pair common cathode diode array configuration to ensure pin compatibility and circuit functionality.

Technology Requirement: Schottky diode technology must be preserved to maintain fast recovery characteristics and forward voltage performance.

Electrical Performance: The substitute must support the required voltage and current specifications. The maximum reverse voltage (Vr) must be equal to or greater than 40 V. The average rectified current (Io) per diode must be equal to or greater than 16 A to handle the design load requirements.

Package Compatibility: The substitute must use TO-263-3 (D2PAK) surface mount package to ensure mechanical and thermal compatibility with existing PCB layouts and thermal management designs.

Environmental and Compliance Standards: The substitute must maintain ROHS3 compliance and MSL 1 rating to satisfy regulatory requirements and manufacturing process compatibility.

The STPS2545CGY-TR from STMicroelectronics meets these substitution criteria with enhanced electrical specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The STPS2545CGY-TR is a direct substitute for the SBG1640CT based on the following engineering criteria:

Product Status Advantage: The STPS2545CGY-TR maintains active product status with STMicroelectronics, ensuring long-term availability and continued manufacturing support. The SBG1640CT is classified as obsolete, making the substitute necessary for ongoing production requirements.

Compliance and Certification: Both components maintain ROHS3 compliance and MSL 1 rating, satisfying regulatory and manufacturing process requirements. The STPS2545CGY-TR includes AEC-Q101 automotive qualification, providing additional quality assurance for applications requiring automotive-grade components.

Electrical Specifications: The STPS2545CGY-TR provides a higher maximum reverse voltage rating of 45 V compared to the 40 V specification of the SBG1640CT, offering improved voltage margin. The substitute's average rectified current rating of 12.5 A per diode is lower than the SBG1640CT's 16 A rating. This difference requires circuit-level evaluation to confirm suitability for the specific application current requirements.

Package Compatibility: Both components use identical TO-263-3 (D2PAK) surface mount packaging, ensuring mechanical and thermal compatibility with existing PCB designs without layout modifications.

Temperature Operating Range: The STPS2545CGY-TR extends the upper operating temperature limit to 175°C compared to the SBG1640CT's 125°C, providing enhanced thermal performance for high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the STPS2545CGY-TR directly replace the SBG1640CT without PCB modifications?

A: Yes, both components use identical TO-263-3 (D2PAK) surface mount packaging with the same pin configuration (2 leads + tab). No PCB layout modifications are required for mechanical and electrical connection compatibility.

Q: What is the significance of the current rating difference between the two components?

A: The SBG1640CT is rated for 16 A average rectified current per diode, while the STPS2545CGY-TR is rated for 12.5 A per diode. Circuit designs operating at or near the 16 A specification of the original component require evaluation to confirm the substitute's 12.5 A rating is sufficient for the application. Designs operating below 12.5 A per diode present no compatibility concerns.

Q: Are there compliance differences between the two components?

A: Both components maintain ROHS3 compliance and MSL 1 rating. The STPS2545CGY-TR includes AEC-Q101 automotive qualification, which is an additional certification not specified for the SBG1640CT. This qualification is beneficial for automotive applications but does not affect compatibility for non-automotive uses.

Q: Why is the reverse leakage current specification different?

A: The STPS2545CGY-TR specifies 125 µA reverse leakage at 45 V, compared to 1 mA for the SBG1640CT at 40 V. The lower leakage current in the substitute component indicates improved reverse bias performance and is a beneficial characteristic for circuit operation.

Q: What is the difference between bulk and tape & reel packaging?

A: The SBG1640CT is supplied in bulk packaging, while the STPS2545CGY-TR is supplied in tape & reel (TR) format. Tape & reel packaging is standard for automated assembly processes and provides improved handling and component protection during manufacturing. Bulk packaging is typically used for manual assembly or lower-volume applications.

Q: Does the extended temperature range of the STPS2545CGY-TR affect substitution suitability?

A: The STPS2545CGY-TR's extended operating temperature range of -40°C to 175°C compared to the SBG1640CT's -65°C to 125°C provides enhanced thermal performance. For applications operating within the SBG1640CT's original temperature range, the substitute performs equivalently. For applications requiring operation above 125°C or below -40°C, the substitute's extended range provides additional capability.