SBT80-10LS Equivalent & Substitute Parts

Part Overview

The SBT80-10LS is a Schottky diode array manufactured by onsemi, configured as a 1 Pair Common Cathode arrangement with a maximum reverse voltage rating of 100 V and average rectified current of 8 A per diode. The device is packaged in a TO-220-3 Full Pack through-hole configuration and operates across a junction temperature range of -55°C to 150°C.

This part is classified as obsolete. Substitute components are necessary to maintain design continuity and ensure ongoing availability for new production builds and field replacements. The substitute parts listed maintain electrical and mechanical compatibility while offering active product status and enhanced specifications.

Substiute Parts

SBT80-10LS

onsemiIn Stock: 1022SBT80-10LS Datasheet

Current PartRFQ

MBR20100CTF-G1

Diodes IncorporatedIn Stock: 19603MBR20100CTF-G1 Datasheet

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STPS20S100CFP

STMicroelectronicsIn Stock: 17331STPS20S100CFP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBT80-10LS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 100 V minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-3 Full Pack

Allowable Parameter Variations:

• Current - Average Rectified (Io): Substitute parts rated at 10 A exceed the 8 A requirement and are acceptable for direct replacement
• Voltage - Forward (Vf): Substitute parts with forward voltage specifications within typical Schottky diode ranges are acceptable
• Operating Temperature - Junction: Substitute parts with extended maximum temperature ratings (-55°C to 175°C) provide enhanced thermal performance
• Current - Reverse Leakage @ Vr: Lower leakage specifications in substitute parts represent improved performance characteristics

Both substitute parts (MBR20100CTF-G1 and STPS20S100CFP) satisfy all critical matching parameters and are electrically and mechanically compatible with the SBT80-10LS.

Parameter Comparison

Engineering Selection Recommendations

MBR20100CTF-G1 (Diodes Incorporated)

This substitute part is active in production and carries AEC-Q101 automotive qualification. The device is RoHS3 compliant and rated for extended junction temperatures to 175°C. The 10 A current rating provides margin above the original 8 A specification. This part is suitable for applications requiring automotive-grade reliability and long-term supply assurance.

STPS20S100CFP (STMicroelectronics)

This substitute part is active in production and RoHS3 compliant. The device features the lowest reverse leakage current specification (3.5 µA @ 100 V) among the available options, indicating superior leakage performance. The 10 A current rating and extended temperature range to 175°C provide enhanced operational margins. This part is suitable for applications prioritizing low leakage characteristics and thermal performance.

Both substitute parts eliminate obsolescence risk associated with the SBT80-10LS while maintaining full electrical and mechanical compatibility. Selection between the two substitutes depends on specific application requirements regarding automotive qualification and leakage specifications.

Frequently Asked Questions (FAQ)

Q: Can MBR20100CTF-G1 and STPS20S100CFP be used interchangeably with SBT80-10LS?

A: Yes. Both substitute parts maintain identical diode configuration (1 Pair Common Cathode), technology (Schottky), reverse voltage rating (100 V), and package type (TO-220-3 Full Pack). The higher current ratings (10 A versus 8 A) and extended temperature ranges represent performance enhancements rather than incompatibilities.

Q: What is the significance of the higher current rating in the substitute parts?

A: The substitute parts are rated for 10 A average rectified current per diode, compared to 8 A for the SBT80-10LS. This higher rating provides additional design margin and allows the substitute parts to handle the same or greater current loads without thermal stress. Direct substitution is valid for all applications within the original 8 A specification.

Q: Are there differences in forward voltage characteristics between these parts?

A: Forward voltage specifications differ due to measurement conditions. The SBT80-10LS specifies 800 mV @ 3 A, while substitutes specify 840-850 mV @ 10 A. These variations are within normal Schottky diode operating ranges and do not preclude direct substitution. Circuit designs accounting for typical Schottky forward voltage drops (0.3-0.7 V) accommodate these specifications.

Q: What is the importance of reverse leakage current differences?

A: The substitute parts exhibit lower reverse leakage currents (50 µA and 3.5 µA) compared to the original part (100 µA @ 50 V). Lower leakage reduces power dissipation and heat generation, particularly in high-temperature or high-voltage applications. This represents an improvement in device performance.

Q: Does the extended temperature range of substitute parts affect compatibility?

A: No. The substitute parts rated to 175°C maximum junction temperature are fully compatible with applications designed for the original -55°C to 150°C range. The extended upper temperature limit provides additional operational margin and does not introduce incompatibilities.

Q: What is the difference between the TO-220FI and TO-220F package designations?

A: Both designations refer to TO-220-3 Full Pack through-hole packages. The suffix variations (FI, F, FP) indicate minor manufacturing or supplier-specific package configurations. All three parts are mechanically and electrically compatible in TO-220-3 footprints.

Q: Is AEC-Q101 qualification required for my application?

A: AEC-Q101 qualification is specific to automotive applications. The MBR20100CTF-G1 carries this qualification, while STPS20S100CFP does not. Select MBR20100CTF-G1 for automotive or safety-critical applications requiring automotive-grade component certification.

Q: Can I use these substitute parts in existing PCB designs without modification?

A: Yes. All three parts share identical TO-220-3 Full Pack pinouts and mechanical dimensions. Direct PCB footprint compatibility is maintained. No circuit board redesign or layout modification is required.