STPSC8H065CT Equivalent & Substitute Parts

Part Overview

The STPSC8H065CT is a Silicon Carbide (SiC) Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement rated for 650 V DC reverse voltage with 4 A average rectified current per diode. The device is packaged in a TO-220-3 through-hole format and operates across a junction temperature range of -40°C to 175°C.

This part is classified as Obsolete. Locating equivalent substitute components is necessary to support ongoing system maintenance, design updates, and procurement continuity for applications requiring SiC Schottky diode arrays with matching electrical and mechanical specifications.

Substiute Parts

STPSC8H065CT

STMicroelectronicsIn Stock: 914STPSC8H065CT Datasheet

Current PartRFQ

STPSC20H065CTY

STMicroelectronicsIn Stock: 987STPSC20H065CTY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPSC8H065CT is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: SiC (Silicon Carbide) Schottky
• Voltage - DC Reverse (Vr) (Max): 650 V
• Mounting Type: Through Hole
• Package / Case: TO-220-3
• Operating Temperature - Junction: -40°C ~ 175°C

Allowable Variation Parameters:

• Current - Average Rectified (Io) (per Diode): Equal to or greater than 4 A
• Voltage - Forward (Vf) (Max) @ If: Equal to or less than 1.75 V at the respective current rating
• Current - Reverse Leakage @ Vr: Equal to or less than 40 µA @ 650 V

The STPSC20H065CTY qualifies as a direct substitute based on these criteria. It maintains identical diode configuration, technology, reverse voltage rating, temperature range, and package format while providing enhanced current capacity (10 A versus 4 A) and improved product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The STPSC20H065CTY is the qualified substitute for the STPSC8H065CT based on the following engineering criteria:

Product Status Alignment: The STPSC20H065CTY carries Active product status, ensuring continued availability and manufacturer support. The STPSC8H065CT is classified as Obsolete, making the substitute necessary for long-term supply chain continuity.

Electrical Compatibility: Both devices maintain identical reverse voltage ratings (650 V), diode configuration (1 Pair Common Cathode), and forward voltage characteristics at their respective current ratings. The STPSC20H065CTY provides higher current capacity (10 A versus 4 A), which is compatible with applications designed for the lower-rated main part.

Compliance and Certification: Both parts are ROHS3 Compliant and REACH Unaffected. The STPSC20H065CTY carries AEC-Q101 automotive qualification, indicating enhanced reliability validation. This additional qualification does not restrict use in non-automotive applications.

Mechanical and Thermal Compatibility: Identical TO-220-3 packaging and operating temperature range (-40°C to 175°C) ensure direct mechanical and thermal compatibility without design modification.

Reverse Leakage Consideration: The STPSC20H065CTY exhibits higher reverse leakage current (100 µA versus 40 µA at 650 V). This parameter remains within acceptable limits for SiC Schottky diode technology and does not preclude substitution in standard rectification applications.

Frequently Asked Questions (FAQ)

Q: Can the STPSC20H065CTY be used as a direct replacement for the STPSC8H065CT in existing designs?

A: Yes. The STPSC20H065CTY is electrically and mechanically compatible with the STPSC8H065CT. Both devices share identical reverse voltage ratings, diode configuration, package format, and operating temperature range. The higher current rating of the substitute (10 A versus 4 A) does not prevent its use in applications designed for the lower-rated part.

Q: What is the significance of the higher current rating in the STPSC20H065CTY?

A: The STPSC20H065CTY is rated for 10 A average rectified current per diode, compared to 4 A for the STPSC8H065CT. This higher rating provides additional design margin and thermal headroom in applications operating at or near the original part's current limits. Designs operating below 4 A experience no functional change.

Q: Are there packaging differences between these parts?

A: Both the STPSC8H065CT and STPSC20H065CTY use the TO-220-3 through-hole package format. No PCB layout or mechanical modifications are required for substitution.

Q: What does the AEC-Q101 qualification on the STPSC20H065CTY indicate?

A: AEC-Q101 is an automotive industry qualification standard. The STPSC20H065CTY meets this standard, indicating enhanced reliability testing and validation. This qualification does not restrict the part's use in non-automotive applications and represents an additional assurance of quality.

Q: How do the reverse leakage currents compare, and does the difference matter?

A: The STPSC8H065CT specifies 40 µA reverse leakage at 650 V, while the STPSC20H065CTY specifies 100 µA at the same voltage. This difference is characteristic of SiC Schottky diode technology and does not prevent substitution in standard rectification circuits. Applications with specific leakage requirements should evaluate this parameter against their design specifications.

Q: Why is the STPSC8H065CT classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production and support for this part. The STPSC20H065CTY, with Active status, ensures ongoing availability and manufacturer technical support for new designs and ongoing production requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both the STPSC8H065CT and STPSC20H065CTY are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic components.