SBL3040CT Equivalent & Substitute Parts

Part Overview

The SBL3040CT is a Schottky diode array in a 1 Pair Common Cathode configuration, rated for 40 V DC reverse voltage and 15 A average rectified current per diode. Manufactured by Diodes Incorporated, this component is packaged in a Through Hole TO-220-3 case and features fast recovery characteristics with a maximum forward voltage of 550 mV at 15 A.

The SBL3040CT is classified as Obsolete. 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 diode array configuration.

Substiute Parts

SBL3040CT

Diodes IncorporatedIn Stock: 6183SBL3040CT Datasheet

Current PartRFQ

STPS30L45CT

STMicroelectronicsIn Stock: 5424STPS30L45CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBL3040CT is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Diode Configuration: 1 Pair Common Cathode (pin-compatible topology)
• Technology: Schottky (fast recovery characteristics)
• Current Rating: 15 A average rectified current per diode (minimum requirement)
• Voltage Rating: Minimum 40 V DC reverse voltage (equal or higher ratings acceptable)
• Forward Voltage: 550 mV @ 15 A (maximum specification)
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: TO-220-3 (physical and electrical pin compatibility)

Compliance Criteria:

• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

A substitute part must satisfy all electrical parameters at or above the SBL3040CT specifications and maintain identical mechanical packaging and pin configuration. The STPS30L45CT from STMicroelectronics meets these requirements with a higher voltage rating (45 V) and equivalent current and forward voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: STPS30L45CT (STMicroelectronics)

The STPS30L45CT is the manufacturer-recommended substitute for the SBL3040CT. This part maintains electrical equivalence across all critical parameters while offering enhanced specifications in voltage rating (45 V versus 40 V) and maximum junction temperature (150°C versus 125°C). Both components are ROHS3 compliant and carry MSL Rating 1 (Unlimited).

The STPS30L45CT is classified as Active product status, ensuring continued availability and supply chain support. The higher voltage rating provides additional design margin in applications operating near the 40 V specification limit of the original part.

Mechanical compatibility is confirmed through identical TO-220-3 packaging and 1 Pair Common Cathode pin configuration, enabling direct board-level substitution without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the STPS30L45CT be used as a direct replacement for the SBL3040CT in existing designs?

A: Yes. The STPS30L45CT is electrically and mechanically compatible with the SBL3040CT. Both components feature identical diode configuration (1 Pair Common Cathode), current rating (15 A), forward voltage (550 mV @ 15 A), and package type (TO-220-3). The STPS30L45CT's higher voltage rating (45 V) and maximum junction temperature (150°C) do not create incompatibility; they represent enhanced specifications suitable for the same application space.

Q: What is the significance of the voltage rating difference between 40 V and 45 V?

A: The STPS30L45CT's 45 V rating exceeds the SBL3040CT's 40 V rating. In circuit applications, this higher rating provides additional design margin and reduces stress on the component when operating at or near the maximum reverse voltage specification. The substitute part remains fully compatible with designs rated for 40 V operation.

Q: Are there any compliance or certification differences between these parts?

A: Both the SBL3040CT and STPS30L45CT are ROHS3 compliant and carry MSL Rating 1 (Unlimited). Compliance status is equivalent, and both components are suitable for applications with identical regulatory requirements.

Q: Why is the SBL3040CT classified as Obsolete?

A: Obsolete status indicates that the SBL3040CT is no longer in active production. The STPS30L45CT, classified as Active, represents the current-generation equivalent and is the recommended path for new designs and ongoing production support.

Q: Does the TO-220-3 package ensure pin-for-pin compatibility?

A: Yes. Both components use the TO-220-3 package with identical pin configuration for the 1 Pair Common Cathode diode array topology. This ensures mechanical fit and electrical pin compatibility on printed circuit boards designed for the SBL3040CT.