STPR620CT Equivalent & Substitute Parts

Part Overview

The STPR620CT is a general-purpose diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode rectifier with a maximum reverse voltage rating of 200 V and average rectified current of 3 A per diode. The device is housed in a Through Hole TO-220-3 package and features fast recovery characteristics with a reverse recovery time of 30 ns.

The STPR620CT is classified as an obsolete product. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

STPR620CT

STMicroelectronicsIn Stock: 16201STPR620CT Datasheet

Current PartRFQ

STTH602CT

STMicroelectronicsIn Stock: 20359STTH602CT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STPR620CT is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match or Exceed):

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 200 V minimum
• Current - Average Rectified (Io) (per Diode): 3 A minimum
• Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Reverse Recovery Time (trr): 30 ns maximum

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: TO-220-3

Compliance Parameters (Must Match or Exceed):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The STTH602CT meets all substitution criteria. This part maintains identical electrical configuration, voltage and current ratings, speed classification, and mechanical packaging while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The STTH602CT is a direct substitute for the STPR620CT based on the following engineering criteria:

Electrical Equivalence: The STTH602CT maintains identical voltage and current ratings (200 V reverse, 3 A average rectified current), diode configuration (1 Pair Common Cathode), and speed classification (Fast Recovery ≤ 500 ns, 30 ns reverse recovery time). These parameters ensure functional compatibility in all applications designed for the STPR620CT.

Mechanical Compatibility: Both parts utilize identical Through Hole mounting and TO-220-3 packaging, ensuring direct pin-for-pin compatibility without PCB redesign or mechanical rework.

Compliance Alignment: The STTH602CT maintains ROHS3 compliance and MSL 1 (Unlimited) rating, matching the regulatory and environmental requirements of the original part.

Product Status Advantage: The STTH602CT is classified as an active product with confirmed inventory availability (20,300 pcs), whereas the STPR620CT is obsolete. This transition eliminates supply chain risk and ensures long-term component availability.

Performance Enhancement: The STTH602CT demonstrates improved performance characteristics, including reduced reverse leakage current (3 µA versus 50 µA at 200 V) and elevated maximum junction temperature rating (175 °C versus 150 °C), providing enhanced reliability margins in thermal and leakage-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH602CT be used as a direct replacement for the STPR620CT without circuit modification?

A: Yes. The STTH602CT is electrically and mechanically equivalent to the STPR620CT. Both parts share identical diode configuration, voltage rating (200 V), current rating (3 A per diode), speed classification, and TO-220-3 package. No circuit modification or PCB redesign is required.

Q: What are the key differences between the STPR620CT and STTH602CT?

A: The primary differences are product status and performance characteristics. The STTH602CT is an active product with higher maximum junction temperature (175 °C versus 150 °C) and significantly lower reverse leakage current (3 µA versus 50 µA at 200 V). The forward voltage rating is slightly higher on the STTH602CT (1.1 V versus 990 mV at 3 A), which represents a minor increase in forward conduction loss.

Q: Are both parts available in the same packaging?

A: Yes. Both the STPR620CT and STTH602CT are housed in Through Hole TO-220-3 packages. The STTH602CT is supplied in Tube packaging, while the STPR620CT was supplied in standard packaging. This difference does not affect electrical or mechanical compatibility.

Q: Why is the STPR620CT classified as obsolete?

A: The STPR620CT has reached end-of-life status. The STTH602CT represents the active successor product line from STMicroelectronics, offering equivalent functionality with improved performance characteristics and assured long-term availability.

Q: What compliance certifications apply to both parts?

A: Both the STPR620CT and STTH602CT are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Both parts are REACH Unaffected and classified under ECCN EAR99 for export control purposes.

Q: Can the STTH602CT handle higher temperatures than the STPR620CT?

A: Yes. The STTH602CT has a maximum junction temperature rating of 175 °C, compared to 150 °C for the STPR620CT. This 25 °C improvement provides additional thermal margin in high-temperature operating environments.

Q: Is there any performance penalty when substituting the STTH602CT for the STPR620CT?

A: No performance penalty exists. The STTH602CT meets or exceeds all electrical specifications of the STPR620CT. The slightly higher forward voltage (1.1 V versus 990 mV at 3 A) results in marginally increased conduction loss, which is negligible in most applications and is offset by improved reverse leakage characteristics and thermal performance.