STPS20SM80CT Equivalent & Substitute Parts

Part Overview

The STPS20SM80CT is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement with an 80 V reverse voltage rating and 10 A average rectified current per diode. The component is packaged in a Through Hole TO-220-3 configuration and features fast recovery characteristics suitable for high-frequency rectification applications.

This part is classified as Obsolete, necessitating identification of equivalent and substitute components to maintain design continuity and ensure supply chain availability. Substitute parts must maintain electrical compatibility across critical parameters including reverse voltage rating, diode configuration, package type, and thermal characteristics.

Substiute Parts

STPS20SM80CT

STMicroelectronicsIn Stock: 959STPS20SM80CT Datasheet

Current PartRFQ

MBR2080CTL

SMC Diode SolutionsIn Stock: 1231MBR2080CTL Datasheet

DirectRFQ

DST3080C

Littelfuse Inc.In Stock: 703DST3080C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the STPS20SM80CT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Diode Configuration: Must be 1 Pair Common Cathode
• Technology: Must be Schottky
• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 80 V
• Mounting Type: Must be Through Hole
• Package / Case: Must be TO-220-3
• Speed: Must support Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

• Current - Average Rectified (Io): Substitute parts rated at or above 10 A per diode are acceptable
• Voltage - Forward (Vf): Variations within typical Schottky diode operating ranges are permissible
• Current - Reverse Leakage @ Vr: Acceptable within standard Schottky specifications
• RoHS Status: Must maintain ROHS3 Compliance

The identified substitute parts satisfy all primary criteria and maintain electrical compatibility with the original STPS20SM80CT specification.

Parameter Comparison

Engineering Selection Recommendations

MBR2080CTL (SMC Diode Solutions)

The MBR2080CTL is classified as Active product status, ensuring ongoing availability and supply chain support. This component maintains full electrical compatibility with the STPS20SM80CT across all primary substitution criteria: identical 80 V reverse voltage rating, 1 Pair Common Cathode configuration, TO-220-3 package, and fast recovery characteristics. The forward voltage specification of 750 mV @ 10 A is favorable relative to the original 780 mV specification. ROHS3 compliance is maintained. The MBR2080CTL is suitable for direct replacement in applications where the original STPS20SM80CT is specified.

DST3080C (Littelfuse Inc.)

The DST3080C is classified as Active product status with established supply availability. This component satisfies all primary substitution criteria with an 80 V reverse voltage rating, 1 Pair Common Cathode configuration, TO-220-3 package, and fast recovery performance. The DST3080C is rated for 15 A average rectified current per diode, exceeding the original 10 A specification, providing additional current margin. ROHS3 compliance is maintained. The DST3080C is suitable for applications requiring equivalent or higher current capacity within the same voltage and package specifications.

Both substitute parts maintain RoHS3 compliance and are available in active product status, providing long-term supply chain viability compared to the obsolete STPS20SM80CT.

Frequently Asked Questions (FAQ)

Q: Can the MBR2080CTL directly replace the STPS20SM80CT in existing designs?

A: Yes. The MBR2080CTL maintains identical electrical specifications across all primary parameters: 80 V reverse voltage, 1 Pair Common Cathode configuration, TO-220-3 package, and fast recovery characteristics. The component is pin-compatible and electrically equivalent for direct substitution.

Q: What is the primary advantage of the DST3080C over the STPS20SM80CT?

A: The DST3080C is rated for 15 A average rectified current per diode, compared to the original 10 A specification. This higher current rating provides additional design margin in applications approaching the original current limits. Both components maintain identical voltage ratings and package configurations.

Q: Are there thermal performance differences between the substitute parts and the original STPS20SM80CT?

A: The STPS20SM80CT specifies a maximum junction temperature of 175°C, while both substitute parts specify an operating range of -55°C to 150°C. Applications operating near the original 175°C maximum junction temperature may require thermal analysis to confirm compatibility with the substitute parts' 150°C maximum specification.

Q: Do all three components maintain the same TO-220-3 package pinout?

A: Yes. All three components are packaged in TO-220-3 configuration with identical pin assignments for 1 Pair Common Cathode diode arrays. Physical and electrical pin compatibility is maintained across all three parts.

Q: What is the significance of the reverse leakage current differences between these parts?

A: The STPS20SM80CT specifies 25 µA reverse leakage at 80 V, while the MBR2080CTL specifies 1 mA and the DST3080C specifies 700 µA at the same voltage. These variations are within normal Schottky diode specifications. Applications with stringent leakage requirements should evaluate the specific leakage performance against circuit design parameters.

Q: Are all three components RoHS3 compliant?

A: Yes. The STPS20SM80CT, MBR2080CTL, and DST3080C are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What is the difference between the MBR2080CTL and DST3080C in terms of product availability?

A: Both components are classified as Active product status, ensuring ongoing manufacturing and supply chain availability. The MBR2080CTL maintains the original 10 A current specification, while the DST3080C provides a higher 15 A rating. Selection between these parts depends on application current requirements and design specifications.