STTH30L06CT Equivalent & Substitute Parts

Part Overview

The STTH30L06CT is a general-purpose diode array manufactured by STMicroelectronics, configured as a 1 Pair Common Cathode rectifier with 600 V reverse voltage rating and 20 A average rectified current per diode. The device is packaged in TO-220-3 through-hole format and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production and repair applications.

Substiute Parts

STTH30L06CT

STMicroelectronicsIn Stock: 2180STTH30L06CT Datasheet

Current PartRFQ

STTH30L06CW

STMicroelectronicsIn Stock: 1397STTH30L06CW Datasheet

Parametric EquivalentRFQ

SDUR3060CT

SMC Diode SolutionsIn Stock: 736SDUR3060CT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH30L06CT is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io) (per Diode): 20 A
• Mounting Type: Through Hole
• Technology: Standard
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Parametric Equivalent Classification: Parts meeting all primary criteria with identical electrical performance are classified as parametric equivalents. The STTH30L06CW meets all electrical specifications and differs only in package format (TO-247-3 versus TO-220-3), making it a direct parametric equivalent suitable for applications where the larger package footprint is acceptable.

Similar Substitute Classification: Parts meeting the core electrical criteria but with variations in secondary parameters are classified as similar substitutes. The SDUR3060CT maintains the 600 V reverse voltage, 1 Pair Common Cathode configuration, and through-hole mounting in TO-220-3 package. However, it exhibits differences in forward voltage (2.03 V @ 15 A versus 1.55 V @ 15 A), reverse recovery time (50 ns versus 85 ns), reverse leakage current (100 µA @ 600 V versus 15 µA @ 600 V), and operating temperature range (-55°C to 150°C versus 175°C maximum junction temperature).

Parameter Comparison

Engineering Selection Recommendations

STTH30L06CW (Parametric Equivalent - Preferred for Direct Substitution): The STTH30L06CW is the recommended parametric equivalent for the obsolete STTH30L06CT. Both devices are manufactured by STMicroelectronics and share identical electrical specifications across all critical parameters: 600 V reverse voltage, 20 A average rectified current, 1.55 V forward voltage at 15 A, 85 ns reverse recovery time, and 15 µA reverse leakage current at 600 V. The STTH30L06CW maintains active product status and full ROHS3 compliance. The sole difference is the package format: TO-247-3 versus TO-220-3. This substitution is suitable for applications where the larger TO-247-3 package footprint can be accommodated on the printed circuit board. The device is currently in stock with 1340 pieces available.

SDUR3060CT (Similar Substitute - Conditional Use): The SDUR3060CT manufactured by SMC Diode Solutions is a similar substitute that maintains the same 600 V reverse voltage rating, 1 Pair Common Cathode configuration, and TO-220-3 package format as the original STTH30L06CT. This device is suitable for applications where package compatibility with the original TO-220-3 footprint is required. However, the SDUR3060CT exhibits measurable differences in secondary electrical parameters: forward voltage is 2.03 V at 15 A (compared to 1.55 V), reverse recovery time is 50 ns (compared to 85 ns), reverse leakage current is 100 µA at 600 V (compared to 15 µA), and the maximum junction temperature is 150°C (compared to 175°C). The average rectified current per diode is not specified for the SDUR3060CT. The device is active and ROHS3 compliant with 676 pieces in stock. Selection of this substitute requires verification that the application circuit can tolerate the higher forward voltage drop and reverse leakage characteristics.

Product Status Consideration: Both substitute parts are active products, ensuring long-term availability and supply chain continuity compared to the obsolete STTH30L06CT.

Frequently Asked Questions (FAQ)

Q: Can the STTH30L06CW be used as a direct replacement for the STTH30L06CT?

A: Yes. The STTH30L06CW is a parametric equivalent with identical electrical specifications. The only difference is the package format: TO-247-3 instead of TO-220-3. Direct substitution is possible if the circuit board layout can accommodate the larger TO-247-3 package dimensions.

Q: What are the key differences between the STTH30L06CW and SDUR3060CT?

A: Both are suitable substitutes but serve different application requirements. The STTH30L06CW maintains identical electrical performance to the original STTH30L06CT but uses a TO-247-3 package. The SDUR3060CT retains the original TO-220-3 package but exhibits higher forward voltage (2.03 V versus 1.55 V), lower reverse recovery time (50 ns versus 85 ns), higher reverse leakage current (100 µA versus 15 µA), and a lower maximum junction temperature (150°C versus 175°C).

Q: Is the SDUR3060CT suitable for high-temperature applications?

A: The SDUR3060CT has a maximum junction temperature of 150°C, which is lower than the original STTH30L06CT (175°C). Applications requiring operation near or above 150°C junction temperature should use the STTH30L06CW instead.

Q: How does the forward voltage difference affect circuit performance?

A: The SDUR3060CT exhibits 0.48 V higher forward voltage (2.03 V versus 1.55 V at 15 A). This results in increased power dissipation in the diode and higher voltage drop across the rectifier stage. Circuit designs with tight voltage regulation requirements or thermal constraints should account for this difference.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the STTH30L06CW and SDUR3060CT are ROHS3 compliant, matching the compliance status of the original STTH30L06CT.

Q: What is the significance of the reverse leakage current difference?

A: The SDUR3060CT exhibits 100 µA reverse leakage at 600 V, compared to 15 µA for the STTH30L06CT and STTH30L06CW. Higher reverse leakage increases standby power consumption and may affect circuit performance in applications with stringent leakage specifications.

Q: Can I use the STTH30L06CW in a circuit designed for TO-220-3 package?

A: The STTH30L06CW uses a TO-247-3 package, which has different pin spacing and mounting hole locations than TO-220-3. Direct board-level substitution without layout modification is not possible. However, the electrical performance is identical, and the device can be used with appropriate adapter hardware or circuit board redesign.

Q: Which substitute should I select for new production?

A: For new production, the STTH30L06CW is the preferred choice due to identical electrical specifications and active product status. If TO-220-3 package compatibility is mandatory, the SDUR3060CT is suitable provided the application circuit can tolerate the specified parameter variations.