DSSK30-0045B Equivalent & Substitute Parts

Part Overview

The DSSK30-0045B is an active Schottky diode array manufactured by IXYS, configured as a 1 Pair Common Cathode arrangement rated for 45 V DC reverse voltage and 15 A average rectified current per diode. The device is packaged in a TO-247-3 through-hole format and is ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements while maintaining electrical and mechanical compatibility within the defined parameter envelope.

Substiute Parts

DSSK30-0045B

IXYSIn Stock: 1143DSSK30-0045B Datasheet

Current PartRFQ

STPS4045CWY

STMicroelectronicsIn Stock: 3448STPS4045CWY Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSSK30-0045B is permissible when the alternative part meets or exceeds the following critical parameters:

1. Diode Configuration: Must be 1 Pair Common Cathode
2. Technology: Must be Schottky
3. Voltage - DC Reverse (Vr) (Max): Must be ≥ 45 V
4. Current - Average Rectified (Io) (per Diode): Must be ≥ 15 A
5. Speed: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
6. Mounting Type: Must be Through Hole
7. Package / Case: Must be TO-247-3
8. RoHS Status: Must be ROHS3 Compliant
9. Moisture Sensitivity Level (MSL): Must be 1 (Unlimited)

The substitute part STPS4045CWY satisfies all substitution criteria with equal or superior electrical ratings and maintains identical mechanical and environmental compliance specifications.

Parameter Comparison

Engineering Selection Recommendations

The STPS4045CWY is a direct substitute for the DSSK30-0045B based on the following engineering criteria:

Electrical Compatibility: Both devices share identical voltage ratings (45 V DC reverse), matching diode configuration (1 Pair Common Cathode), and identical fast recovery speed specifications. The STPS4045CWY provides higher current capacity (20 A versus 15 A per diode), which is compatible with applications designed for the DSSK30-0045B.

Mechanical Compatibility: Both parts utilize the TO-247-3 through-hole package, ensuring identical PCB footprint and mounting requirements.

Compliance and Certification: Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating. The STPS4045CWY carries AEC-Q101 automotive qualification, indicating additional quality assurance for applications requiring automotive-grade components.

Environmental Performance: The STPS4045CWY extends the operating temperature range to -40 to 175 °C compared to the DSSK30-0045B range of -55 to 150 °C, providing broader thermal operating capability.

Product Status: Both parts are active products with confirmed inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the STPS4045CWY replace the DSSK30-0045B in existing designs?

A: Yes. The STPS4045CWY is electrically and mechanically compatible. Both devices share identical voltage ratings, diode configuration, package type, and fast recovery speed specifications. The higher current rating of the STPS4045CWY (20 A versus 15 A) does not create compatibility issues in applications designed for the DSSK30-0045B.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (IXYS versus STMicroelectronics), current rating (15 A versus 20 A per diode), forward voltage characteristics at rated current, reverse leakage current (10 mA versus 200 µA at 45 V), and operating temperature range (-55 to 150 °C versus -40 to 175 °C). The STPS4045CWY includes AEC-Q101 automotive qualification.

Q: Are both parts available in the same package?

A: Yes. Both the DSSK30-0045B and STPS4045CWY are packaged in TO-247-3 through-hole format, ensuring identical PCB mounting and thermal management characteristics.

Q: Do these parts have the same RoHS compliance status?

A: Yes. Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements.

Q: Which part should be selected for new designs?

A: Selection depends on application-specific requirements. The STPS4045CWY offers higher current capacity and extended temperature range, making it suitable for demanding applications. The DSSK30-0045B remains appropriate for applications with 15 A current requirements. Both parts meet identical compliance standards.

Q: Is there a performance difference in forward voltage drop?

A: Forward voltage specifications are provided at different operating points. The DSSK30-0045B specifies 470 mV at 15 A, while the STPS4045CWY specifies 760 mV at 20 A. Direct comparison requires evaluation at identical current levels, which is not provided in the available specifications.