STPS30170CG Equivalent & Substitute Parts

Part Overview

The STPS30170CG is a Schottky diode array manufactured by STMicroelectronics, configured as 1 pair common cathode with a maximum reverse voltage rating of 170 V and average rectified current of 15 A per diode. The device is packaged in TO-263-3 (D2PAK) surface mount configuration with 2 leads plus tab. This part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure long-term supply availability for new production and field replacements.

Substiute Parts

STPS30170CG

STMicroelectronicsIn Stock: 985STPS30170CG Datasheet

Current PartRFQ

STPS40170CG-TR

STMicroelectronicsIn Stock: 4369STPS40170CG-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPS30170CG is determined by the following critical parameters that must remain constant or be exceeded:

Fixed Parameters (Must Match Exactly):

• Diode Configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 170 V
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount

Scalable Parameters (Can Be Equal or Exceeded):

• Current - Average Rectified (Io) (per Diode): 15 A minimum
• Voltage - Forward (Vf) (Max) @ If: 920 mV maximum at rated current
• Operating Temperature - Junction (Max): 175°C minimum
• Current - Reverse Leakage @ Vr: 20 µA maximum at 170 V

The STPS40170CG-TR qualifies as a direct substitute because it maintains identical diode configuration, Schottky technology, reverse voltage rating, and D2PAK package while providing enhanced current capability (20 A versus 15 A) and maintaining compliance with RoHS3, REACH, and MSL requirements.

Parameter Comparison

Engineering Selection Recommendations

The STPS40170CG-TR is the appropriate substitute for the obsolete STPS30170CG based on the following engineering criteria:

Product Status: The STPS30170CG is classified as obsolete, while the STPS40170CG-TR maintains active product status with 4300 units in stock. Active status ensures continued availability for procurement and supply chain reliability.

Regulatory Compliance: Both components maintain identical RoHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental regulations.

Electrical Performance: The STPS40170CG-TR provides enhanced current capability (20 A versus 15 A per diode) while maintaining the same 170 V reverse voltage rating, forward voltage characteristics, and fast recovery switching speed. This enhancement provides design margin without introducing incompatibility.

Package Compatibility: Both components utilize identical TO-263-3 D2PAK surface mount packaging with 2 leads plus tab, enabling direct PCB layout compatibility and eliminating redesign requirements.

Thermal Characteristics: Both components share identical maximum junction temperature rating of 175°C, ensuring equivalent thermal performance in system applications.

Frequently Asked Questions (FAQ)

Q: Can the STPS40170CG-TR directly replace the STPS30170CG in existing designs?

A: Yes. The STPS40170CG-TR maintains identical package, pinout, reverse voltage rating, and thermal characteristics. The increased current rating (20 A versus 15 A) provides additional design margin without introducing incompatibility.

Q: What is the significance of the higher current rating in the STPS40170CG-TR?

A: The STPS40170CG-TR is rated for 20 A average rectified current per diode compared to 15 A in the STPS30170CG. This higher rating allows the substitute to operate safely in applications requiring the full 15 A specification while providing headroom for transient conditions or future design iterations.

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

A: Both components specify 920 mV maximum forward voltage at their respective rated currents (15 A for STPS30170CG and 20 A for STPS40170CG-TR). Forward voltage performance is equivalent for applications operating at or below 15 A.

Q: How do the reverse leakage currents compare?

A: The STPS30170CG specifies 20 µA maximum reverse leakage at 170 V, while the STPS40170CG-TR specifies 30 µA at the same voltage. Both values remain within acceptable ranges for Schottky diode applications and do not impact circuit functionality in standard rectification or switching applications.

Q: Is the D2PAK package identical between both components?

A: Yes. Both components use TO-263-3 D2PAK packaging with 2 leads plus tab. PCB footprints, solder pad layouts, and thermal interface characteristics are identical, eliminating any layout or assembly modifications.

Q: What is the supply status difference between these parts?

A: The STPS30170CG is obsolete with limited remaining inventory (912 units). The STPS40170CG-TR is active with robust supply availability (4300 units in stock), ensuring long-term procurement reliability for production and field service applications.

Q: Do both components meet current environmental and regulatory requirements?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating, meeting current manufacturing and environmental standards without qualification modifications.