SBG1040CT-T-F Equivalent & Substitute Parts

Part Overview

The SBG1040CT-T-F is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 pair common cathode with 40 V DC reverse voltage rating and 10 A average rectified current per diode. The component is packaged in TO-263-3 (D2PAK) surface mount configuration. This part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement continuity.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io) (per Diode)	10 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 5 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 40 V
Operating Temperature - Junction	-65°C ~ 125°C
Mounting Type	Surface Mount
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SBG1040CT-T-F is determined by the following critical parameters: diode configuration (1 pair common cathode), package type (TO-263-3 D2PAK), voltage rating (40 V DC reverse), current rating (10 A average rectified per diode), and technology classification (Schottky). Substitute parts are grouped into two categories based on electrical compatibility:

Category 1: Full Parametric Equivalents (40 V, 10 A) Parts matching all primary electrical specifications: voltage rating, current rating, forward voltage characteristics, and reverse leakage performance. These components provide direct functional replacement with identical electrical performance.

Category 2: Reduced Current Rating Substitutes (40 V, 5 A) Parts with lower average rectified current ratings (5 A versus 10 A) but identical voltage ratings and package configuration. These are suitable for applications where the full 10 A current capacity is not required.

Category 3: Enhanced Voltage Rating Substitutes (45 V, 12.5 A) Parts with higher voltage and current ratings that provide design margin for applications requiring increased electrical headroom while maintaining package compatibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	Ir @ Vr	Tj (Operating)	Package	Product Status
SBG1040CT-T-F	Diodes Incorporated	40 V	10 A	550 mV @ 5 A	1 mA @ 40 V	-65°C ~ 125°C	TO-263-3 D2PAK	Obsolete
MBRB1040CT-TP	Micro Commercial Co	40 V	10 A	550 mV @ 5 A	500 µA @ 40 V	-55°C ~ 125°C	TO-263-3 D2PAK	Not For New Designs
SB1040DC_R2_00001	Panjit International Inc.	40 V	10 A	550 mV @ 5 A	200 µA @ 40 V	-55°C ~ 150°C	TO-263-3 D2PAK	Active
SRS1040 MNG	Taiwan Semiconductor Corporation	40 V	10 A	550 mV @ 5 A	500 µA @ 40 V	-55°C ~ 125°C	TO-263-3 D2PAK	Active
SRS1040H	Taiwan Semiconductor Corporation	40 V	10 A	550 mV @ 5 A	500 µA @ 40 V	-55°C ~ 125°C	TO-263-3 D2PAK	Active
SBR1040CTB	Diodes Incorporated	40 V	5 A	600 mV @ 5 A	500 µA @ 40 V	-65°C ~ 175°C	TO-263-3 D2PAK	Active
STPS10L40CG-TR	STMicroelectronics	40 V	5 A	530 mV @ 5 A	200 µA @ 40 V	-40°C ~ 150°C	TO-263-3 D2PAK	Active
STPS2545CGY-TR	STMicroelectronics	45 V	12.5 A	840 mV @ 25 A	125 µA @ 45 V	-40°C ~ 175°C	TO-263-3 D2PAK	Active

Engineering Selection Recommendations

For Direct Replacement (40 V, 10 A Rating):

SB1040DC_R2_00001 (Panjit International Inc.) is the primary recommended substitute. This part maintains identical electrical specifications to the SBG1040CT-T-F, operates across an extended temperature range (-55°C ~ 150°C), and carries active product status. The component is RoHS3 compliant and REACH unaffected.

SRS1040H (Taiwan Semiconductor Corporation) provides an alternative with automotive-grade qualification (AEC-Q101) and active product status. This part is suitable for applications requiring automotive-level reliability assurance while maintaining full parametric equivalence.

SRS1040 MNG (Taiwan Semiconductor Corporation) offers equivalent electrical performance with active product status for non-automotive applications.

MBRB1040CT-TP (Micro Commercial Co) provides parametric equivalence but carries "Not For New Designs" status, limiting suitability for new development programs.

For Current-Reduced Applications (40 V, 5 A Rating):

SBR1040CTB (Diodes Incorporated) is an active product from the original manufacturer with extended operating temperature range (-65°C ~ 175°C). This part is suitable for applications where 5 A per diode capacity is sufficient.

STPS10L40CG-TR (STMicroelectronics) provides equivalent 5 A performance with improved forward voltage characteristics (530 mV @ 5 A) and active product status.

For Enhanced Electrical Margin (45 V, 12.5 A Rating):

STPS2545CGY-TR (STMicroelectronics) offers higher voltage and current ratings with automotive qualification (AEC-Q101) and extended temperature range (-40°C ~ 175°C). This part is suitable for applications requiring increased design margin beyond the original 40 V, 10 A specification.

Frequently Asked Questions (FAQ)

Q: Can SB1040DC_R2_00001 be used as a direct replacement for SBG1040CT-T-F?

A: Yes. SB1040DC_R2_00001 maintains identical voltage rating (40 V), current rating (10 A per diode), forward voltage (550 mV @ 5 A), and package configuration (TO-263-3 D2PAK). The part is active and RoHS3 compliant.

Q: What is the difference between SRS1040H and SRS1040 MNG?

A: Both parts are manufactured by Taiwan Semiconductor Corporation with identical electrical specifications (40 V, 10 A, 550 mV @ 5 A). SRS1040H includes automotive-grade qualification (AEC-Q101) and is supplied in Tape & Reel packaging, while SRS1040 MNG is the standard industrial version.

Q: Can SBR1040CTB replace SBG1040CT-T-F in all applications?

A: SBR1040CTB is suitable only for applications where the 5 A per diode current rating is adequate. The part cannot be used in circuits requiring the full 10 A capacity of the original component. Both parts share the same 40 V voltage rating and TO-263-3 D2PAK package.

Q: Why does STPS2545CGY-TR have higher forward voltage (840 mV @ 25 A) compared to the original part (550 mV @ 5 A)?

A: Forward voltage is measured at different current levels. STPS2545CGY-TR is specified at 25 A, while SBG1040CT-T-F is specified at 5 A. Forward voltage increases with current. At equivalent current levels, STPS2545CGY-TR provides comparable or superior performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance status, meeting environmental and hazardous substance restrictions.

Q: What is the significance of "Not For New Designs" status on MBRB1040CT-TP?

A: This designation indicates the manufacturer is not recommending the part for new product development. While the part remains available and functionally equivalent, it is intended for legacy system support only. New designs should utilize active-status alternatives such as SB1040DC_R2_00001 or SRS1040H.

Q: Can STPS10L40CG-TR be used in place of SBG1040CT-T-F?

A: STPS10L40CG-TR is suitable only for applications where 5 A per diode capacity is sufficient. The part shares the 40 V voltage rating and TO-263-3 D2PAK package but cannot support the full 10 A current requirement of the original component.

Q: What packaging formats are available for substitute parts?

A: Substitute parts are available in multiple packaging formats: Tube (SBR1040CTB), Tape & Reel (STPS10L40CG-TR, STPS2545CGY-TR, SRS1040H, SB1040DC_R2_00001, MBRB1040CT-TP), and unspecified packaging (SRS1040 MNG). All maintain the same TO-263-3 D2PAK surface mount configuration.

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