STPS80L30CY Equivalent & Substitute Parts

Part Overview

The STPS80L30CY is a Schottky diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode arrangement with a maximum reverse voltage rating of 30 V and average rectified current of 40 A per diode. The device is packaged in a TO-247-3 through-hole format and features fast recovery characteristics with a maximum forward voltage of 480 mV at 40 A.

The STPS80L30CY is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer available from primary sources.

Substiute Parts

STPS80L30CY

STMicroelectronicsIn Stock: 1093STPS80L30CY Datasheet

Current PartRFQ

DSSK80-0045B

IXYSIn Stock: 1440DSSK80-0045B Datasheet

SimilarRFQ

DSSK80-003B

IXYSIn Stock: 863DSSK80-003B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS80L30CY is determined by the following critical parameters:

Mandatory Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Mounting Type: Through Hole
• Package / Case: TO-247-3
• Current - Average Rectified (Io): 40 A per diode

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr) (Max): Substitute parts must equal or exceed 30 V
• Voltage - Forward (Vf) (Max) @ If: Substitute parts must not exceed 480 mV @ 40 A by more than the tolerance of the original specification
• Current - Reverse Leakage @ Vr: Substitute parts may vary within acceptable limits for the application
• Operating Temperature - Junction: Substitute parts must support a maximum of 150°C or higher

Two substitute parts are identified:

1. DSSK80-003B (IXYS): Parametric equivalent with identical electrical ratings (30 V, 40 A, 480 mV forward voltage) and matching package configuration. Product status is Active.

2. DSSK80-0045B (IXYS): Functional substitute with higher voltage rating (45 V) and compatible current rating (40 A). Product status is Active. This part provides additional voltage margin for applications where reverse voltage stress may exceed 30 V.

Parameter Comparison

Engineering Selection Recommendations

DSSK80-003B Selection Criteria:

The DSSK80-003B is the direct parametric equivalent to the STPS80L30CY. This part maintains identical electrical specifications: 30 V reverse voltage rating, 40 A average rectified current, and 480 mV maximum forward voltage at 40 A. The DSSK80-003B is manufactured by IXYS and carries Active product status, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant and carry identical compliance certifications (REACH Unaffected, EAR99 ECCN classification). The DSSK80-003B is the preferred substitute for direct replacement applications where the original STPS80L30CY specifications are required without modification.

DSSK80-0045B Selection Criteria:

The DSSK80-0045B is a functional substitute suitable for applications where the circuit design permits operation at higher reverse voltage ratings. This part maintains the 40 A current rating and fast recovery characteristics of the original part. The DSSK80-0045B features a 45 V reverse voltage rating, providing additional voltage margin over the 30 V specification of the STPS80L30CY. The forward voltage specification increases to 510 mV at 40 A, representing a 30 mV increase from the original part. The DSSK80-0045B is Active in product status and carries identical compliance certifications. This part is suitable for applications where reverse voltage stress may approach or exceed 30 V, or where design standardization on a higher voltage rating is preferred across multiple circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can the DSSK80-003B be used as a direct replacement for the STPS80L30CY without circuit modification?

A: Yes. The DSSK80-003B maintains identical electrical specifications for reverse voltage (30 V), average rectified current (40 A), and forward voltage (480 mV @ 40 A). Both parts use the same TO-247-3 package configuration and mounting type. No circuit modification is required for direct substitution.

Q: What is the primary difference between the DSSK80-003B and DSSK80-0045B?

A: The DSSK80-0045B features a higher reverse voltage rating of 45 V compared to the 30 V rating of both the STPS80L30CY and DSSK80-003B. The forward voltage specification of the DSSK80-0045B is 510 mV at 40 A, compared to 480 mV for the other two parts. Both parts maintain the same 40 A current rating and TO-247-3 package.

Q: Are there any compliance or regulatory differences between the substitute parts and the original STPS80L30CY?

A: No. All three parts (STPS80L30CY, DSSK80-003B, and DSSK80-0045B) are ROHS3 compliant, REACH Unaffected, and classified under EAR99 ECCN. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both the original part and DSSK80-003B.

Q: Why does the DSSK80-003B show higher reverse leakage current (40 mA @ 30 V) compared to the STPS80L30CY (4 mA @ 30 V)?

A: Reverse leakage current is a parameter that varies between manufacturers and manufacturing processes. The DSSK80-003B specification reflects IXYS manufacturing characteristics. Both values remain within acceptable limits for Schottky diode applications. Circuit designers must evaluate leakage current impact on their specific application requirements.

Q: Can the DSSK80-0045B be used in applications designed for the STPS80L30CY?

A: The DSSK80-0045B is functionally compatible with applications designed for the STPS80L30CY. The higher 45 V reverse voltage rating provides additional safety margin. The 30 mV increase in forward voltage (510 mV vs. 480 mV at 40 A) must be evaluated for applications with tight voltage drop specifications or thermal constraints. In most rectification and switching applications, this difference is acceptable.

Q: What is the inventory status of these substitute parts?

A: The DSSK80-003B has 810 pieces in stock. The DSSK80-0045B has 1419 pieces in stock. Both parts are manufactured by IXYS and carry Active product status, indicating ongoing availability and production support.

Q: Are the TO-247-3 packages of all three parts physically identical?

A: Yes. The STPS80L30CY, DSSK80-003B, and DSSK80-0045B all use the TO-247-3 through-hole package configuration. Physical dimensions and pin assignments are identical, allowing direct mechanical substitution on printed circuit boards.