SBL1040CTP Equivalent & Substitute Parts

Part Overview

The SBL1040CTP is a Schottky diode array manufactured by Diodes Incorporated, configured as a 1 Pair Common Cathode arrangement rated for 40 V DC reverse voltage and 5 A average rectified current per diode. The device is packaged in a TO-220-3 Isolated Tab through-hole configuration and is classified as obsolete. Due to its obsolete product status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SBL1040CTP

Diodes IncorporatedIn Stock: 54822SBL1040CTP Datasheet

Current PartRFQ

SBL1040CT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 1975SBL1040CT-E3/45 Datasheet

DirectRFQ

RB085T-40

Rohm SemiconductorIn Stock: 4290RB085T-40 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SBL1040CTP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Diode configuration: 1 Pair Common Cathode
• Technology: Schottky
• Voltage rating: 40 V DC reverse (Vr) maximum
• Current rating: 5 A average rectified current per diode
• Speed classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Reverse leakage current: ≤ 500 µA @ 40 V

Mechanical Equivalence Criteria:

• Mounting type: Through Hole
• Package family: TO-220-3 variants
• Thermal performance: Operating junction temperature range compatibility

Compliance Criteria:

• RoHS3 compliance
• MSL rating: 1 (Unlimited)

Substitute parts must satisfy all electrical parameters within the specified tolerances and maintain mechanical compatibility with TO-220-3 through-hole mounting. Forward voltage characteristics and reverse leakage specifications are critical for circuit performance and must not exceed the stated maximums.

Parameter Comparison

Engineering Selection Recommendations

SBL1040CT-E3/45 (Vishay General Semiconductor - Diodes Division)

This part is a direct functional equivalent with active product status. It meets all electrical specifications with forward voltage of 550 mV @ 5 A, which is 10 mV lower than the main part specification. The reverse leakage current matches at 500 µA @ 40 V. The operating temperature range is -40°C ~ 125°C, which is narrower than the main part but suitable for standard industrial applications. This substitute is ROHS3 compliant and carries unlimited MSL rating. Current inventory availability is 1,890 pieces.

RB085T-40 (Rohm Semiconductor)

This part is a manufacturer-recommended substitute with active product status. It satisfies all critical electrical parameters with forward voltage of 550 mV @ 5 A and reverse leakage current of 200 µA @ 40 V, which is superior to the main part specification. The maximum operating junction temperature is 150°C, matching the main part upper limit. The device is ROHS3 compliant with unlimited MSL rating. Current inventory availability is 4,185 pieces. The TO-220-3 Full Pack configuration provides enhanced thermal management characteristics.

Both substitutes are suitable for direct replacement in applications where the SBL1040CTP is specified, provided that the operating temperature range and package mechanical interface are compatible with the circuit design.

Frequently Asked Questions (FAQ)

Q: Can SBL1040CT-E3/45 be used as a direct replacement for SBL1040CTP?

A: Yes. Both parts share identical electrical specifications for voltage rating (40 V), current rating (5 A), diode configuration (1 Pair Common Cathode), and Schottky technology. Forward voltage and reverse leakage parameters are within acceptable equivalence. Both are through-hole TO-220-3 packages with ROHS3 compliance and unlimited MSL rating. The operating temperature range of SBL1040CT-E3/45 (-40°C ~ 125°C) is narrower than the main part (-65°C ~ 150°C) and must be verified against circuit requirements.

Q: What is the difference between the TO-220-3 Isolated Tab and TO-220-3 Full Pack packages?

A: Both are TO-220-3 through-hole packages suitable for the same mounting footprint. The Isolated Tab variant (SBL1040CTP) provides electrical isolation of the tab from the die, while the Full Pack variant (RB085T-40) integrates the tab thermally with the die for enhanced heat dissipation. Package selection depends on thermal management requirements and circuit isolation specifications.

Q: Is RB085T-40 compatible with the same PCB footprint as SBL1040CTP?

A: Yes. Both devices use TO-220-3 through-hole mounting and are compatible with standard TO-220-3 PCB footprints. Physical lead spacing and hole positioning are equivalent across both parts.

Q: What are the key differences in reverse leakage current between the substitutes?

A: SBL1040CTP and SBL1040CT-E3/45 both specify 500 µA @ 40 V reverse leakage. RB085T-40 specifies 200 µA @ 40 V, which represents lower leakage current and improved performance characteristics. Lower reverse leakage may benefit applications sensitive to standby current or leakage-dependent circuit behavior.

Q: Are all three parts RoHS3 compliant?

A: Yes. SBL1040CTP, SBL1040CT-E3/45, and RB085T-40 are all ROHS3 compliant with unlimited MSL rating (1), indicating no moisture sensitivity restrictions during storage and handling.

Q: Why is the SBL1040CTP classified as obsolete?

A: The SBL1040CTP is listed as obsolete by the manufacturer. Active substitutes with equivalent electrical and mechanical specifications are available from Vishay General Semiconductor and Rohm Semiconductor to support continued design implementation and production requirements.