SBL1050CT Equivalent & Substitute Parts

Part Overview

The SBL1050CT is a Schottky diode array manufactured by Diodes Incorporated, configured as a 1 Pair Common Cathode with a maximum reverse voltage of 50 V and average rectified current of 10 A per diode. The device is packaged in a Through Hole TO-220-3 case and features fast recovery characteristics suitable for high-frequency rectification applications.

The SBL1050CT is classified as Obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where the original part is no longer readily procurable from primary sources.

Substiute Parts

SBL1050CT

Diodes IncorporatedIn Stock: 786SBL1050CT Datasheet

Current PartRFQ

DST2045C

Littelfuse Inc.In Stock: 1025DST2045C Datasheet

MFR RecommendedRFQ

STPS10L40CT

STMicroelectronicsIn Stock: 3632STPS10L40CT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SBL1050CT are selected based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Compatibility Parameters:

• Diode Configuration: 1 Pair Common Cathode (pinout compatibility)
• Technology: Schottky (fast recovery rectification characteristics)
• Mounting Type: Through Hole (mechanical fit)
• Package / Case: TO-220-3 (physical form factor)
• Voltage - DC Reverse (Vr) (Max): Equal to or greater than 50 V
• Current - Average Rectified (Io) (per Diode): Equal to or greater than 10 A
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Substitute parts must maintain or exceed the electrical performance specifications of the original part to ensure functional equivalence in the target application. Parts with lower voltage or current ratings are not suitable substitutes. Parts with different diode configurations or package types are not electrically or mechanically compatible.

Parameter Comparison

Engineering Selection Recommendations

DST2045C (Littelfuse Inc.): The DST2045C is an Active product with identical diode configuration, technology, and package form factor to the SBL1050CT. It maintains the 10 A current rating and provides a reverse voltage rating of 45 V, which is lower than the original 50 V specification. The DST2045C is ROHS3 Compliant and carries REACH Unaffected status. This part is suitable for applications where the 45 V reverse voltage rating is sufficient for the circuit design.

STPS10L40CT (STMicroelectronics): The STPS10L40CT is an Active product with identical diode configuration, technology, and package form factor to the SBL1050CT. However, this part provides a reduced current rating of 5 A per diode compared to the original 10 A specification, and a reverse voltage rating of 40 V. The STPS10L40CT is ROHS3 Compliant and carries REACH Unaffected status. This part is suitable only for applications where both the 40 V reverse voltage and 5 A current ratings are compatible with the circuit requirements.

Both substitute parts are Active products with current manufacturing support and full regulatory compliance. Selection between these substitutes depends on the specific voltage and current requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can the DST2045C be used as a direct replacement for the SBL1050CT?

A: The DST2045C shares the same diode configuration (1 Pair Common Cathode), technology (Schottky), mounting type (Through Hole), and package form factor (TO-220-3) as the SBL1050CT. The reverse voltage rating is 45 V compared to 50 V on the original part. The current rating remains at 10 A per diode. Substitution is valid when the application circuit operates at or below 45 V reverse voltage.

Q: Can the STPS10L40CT be used as a direct replacement for the SBL1050CT?

A: The STPS10L40CT shares the same diode configuration (1 Pair Common Cathode), technology (Schottky), mounting type (Through Hole), and package form factor (TO-220-3) as the SBL1050CT. However, the current rating is reduced to 5 A per diode compared to 10 A on the original part, and the reverse voltage rating is 40 V. Substitution is valid only when the application circuit requires 5 A or less per diode and operates at or below 40 V reverse voltage.

Q: What is the significance of the "1 Pair Common Cathode" configuration?

A: The 1 Pair Common Cathode configuration indicates that the diode array contains two diodes with a shared cathode terminal. This specific pinout arrangement is critical for circuit compatibility. Substitute parts must maintain this exact configuration to ensure proper electrical connection and function within the target application.

Q: Are all substitute parts RoHS3 Compliant?

A: Yes. Both the DST2045C and STPS10L40CT are ROHS3 Compliant, matching the compliance status of the original SBL1050CT. All parts carry Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q: What is the difference in forward voltage between the substitute parts?

A: The SBL1050CT specifies a maximum forward voltage of 700 mV at 5 A. The DST2045C specifies 580 mV at 10 A, and the STPS10L40CT specifies 530 mV at 5 A. Lower forward voltage reduces power dissipation in the diode during conduction. The measurement conditions differ between parts, so direct comparison requires evaluation at identical current levels.

Q: Why is the SBL1050CT classified as Obsolete?

A: Obsolete status indicates that the manufacturer has discontinued production and support for this part. Active substitute parts such as the DST2045C and STPS10L40CT are recommended for new designs and ongoing production requirements.

Q: Are there any temperature range differences between the substitute parts?

A: The SBL1050CT operates from -65°C to 150°C. The DST2045C operates from -55°C to 150°C, providing a narrower low-temperature range. The STPS10L40CT specifies a maximum junction temperature of 150°C without a defined minimum. Applications requiring operation below -55°C may not be compatible with the DST2045C or STPS10L40CT.