SBL2045CTP Equivalent & Substitute Parts

Part Overview

The SBL2045CTP is a Schottky diode array manufactured by Diodes Incorporated, configured as 1 Pair Common Cathode with a maximum reverse voltage of 45 V and average rectified current of 10A per diode. The device is packaged in TO-220-3 Isolated Tab configuration for through-hole mounting applications.

This part is classified as Obsolete. Identifying 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.

Key Parameters

Parameter	Value
Manufacturer Part Number	SBL2045CTP
Manufacturer	Diodes Incorporated
Category	Diodes, Rectifiers
Diode Configuration	1 Pair Common Cathode
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V
Current - Average Rectified (Io) (per Diode)	10A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-220-3 Isolated Tab
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SBL2045CTP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Current - Average Rectified (Io): 10A per diode
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Allowable Parameter Variations:

Voltage - DC Reverse (Vr) (Max): Equal to or greater than 45 V
Voltage - Forward (Vf) (Max) @ If: Within acceptable circuit design margins
Current - Reverse Leakage @ Vr: Acceptable within application requirements
Operating Temperature - Junction: Must support -65°C minimum and 150°C maximum
Package / Case: TO-220-3 configuration (Isolated Tab or Full Pack variants acceptable)

Substitute parts meeting these criteria are functionally compatible with the SBL2045CTP in applications where the original part specifications are met or exceeded.

Parameter Comparison

Parameter	SBL2045CTP	MBRF2045CT	MBRF2045CT-E3/45	RB215T-40	STPS20L45CFP
Manufacturer	Diodes Incorporated	Diodes Incorporated	Vishay General Semiconductor	Rohm Semiconductor	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	45 V	60 V	45 V	40 V	45 V
Current - Average Rectified (Io) (per Diode)	10A	10A	10A	10A	10A
Voltage - Forward (Vf) (Max) @ If	600 mV @ 10 A	640 mV @ 10 A	650 mV @ 10 A	550 mV @ 10 A	550 mV @ 10 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 45 V	100 µA @ 60 V	100 µA @ 45 V	500 µA @ 40 V	200 µA @ 45 V
Operating Temperature - Junction	-65°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	150°C (Max)	150°C (Max)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-220-3 Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack, Isolated Tab	TO-220-3 Full Pack	TO-220-3 Full Pack
Product Status	Obsolete	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

MBRF2045CT-E3/45 (Vishay General Semiconductor - Diodes Division)

This substitute is the primary recommended equivalent. The MBRF2045CT-E3/45 matches the SBL2045CTP in voltage rating (45 V), current rating (10A), and operating temperature range (-65°C ~ 150°C). The part is classified as Active, ensuring continued availability and supply chain support. ROHS3 compliance and REACH Unaffected status provide regulatory alignment. Forward voltage characteristics are within acceptable design margins.

STPS20L45CFP (STMicroelectronics)

This substitute provides equivalent voltage (45 V) and current (10A) ratings with Active product status. The STPS20L45CFP offers lower forward voltage (550 mV @ 10 A) compared to the original part, which may provide thermal efficiency benefits in power conversion applications. ROHS3 compliance and REACH Unaffected status are confirmed.

MBRF2045CT (Diodes Incorporated)

This substitute offers higher voltage rating (60 V) with matching current (10A) and fast recovery characteristics. While classified as Obsolete, it provides voltage margin for applications with potential supply transients. Automotive qualification (AEC-Q101) is available. Forward voltage is slightly elevated (640 mV @ 10 A).

RB215T-40 (Rohm Semiconductor)

This substitute operates at reduced voltage rating (40 V) with matching current (10A). The RB215T-40 is classified as Active and offers lower forward voltage (550 mV @ 10 A). This option is suitable for applications where the 45 V rating is not required and lower forward voltage drop is beneficial.

Frequently Asked Questions (FAQ)

Q: Can MBRF2045CT-E3/45 directly replace SBL2045CTP in all applications?

A: Yes, the MBRF2045CT-E3/45 is a direct functional equivalent. Both parts share identical voltage rating (45 V), current rating (10A per diode), diode configuration (1 Pair Common Cathode), and operating temperature range (-65°C ~ 150°C). The TO-220-3 package footprint is compatible. Forward voltage variation (650 mV vs. 600 mV @ 10 A) is within typical circuit design tolerances.

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

A: Both are TO-220-3 through-hole packages suitable for the same PCB footprint. The Isolated Tab variant provides electrical isolation of the tab from the die, while the Full Pack variant connects the tab to the die. Package selection depends on thermal management and electrical isolation requirements of the specific application. Mechanical mounting compatibility is maintained across both variants.

Q: Why is STPS20L45CFP listed as a substitute if it has lower forward voltage?

A: Lower forward voltage (550 mV vs. 600 mV @ 10 A) is a beneficial characteristic that reduces power dissipation and heat generation. The STPS20L45CFP maintains all critical electrical parameters: 45 V reverse voltage, 10A current rating, Schottky technology, and fast recovery characteristics. This substitute is suitable for applications where thermal efficiency is advantageous.

Q: Can RB215T-40 be used in applications requiring 45 V rating?

A: No. The RB215T-40 is rated for maximum 40 V reverse voltage, which is below the SBL2045CTP specification of 45 V. This substitute is suitable only for applications where the circuit design operates at or below 40 V. Using this part in a 45 V application would exceed the device rating and create reliability risk.

Q: What is the significance of Active vs. Obsolete product status?

A: Active status indicates the manufacturer continues production and supports the part through normal distribution channels. Obsolete status indicates the manufacturer has discontinued production. For the SBL2045CTP (Obsolete), substitutes with Active status (MBRF2045CT-E3/45, STPS20L45CFP, RB215T-40) provide assured long-term availability and supply chain continuity.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the SBL2045CTP. This ensures regulatory alignment for applications subject to ROHS3 requirements.

Q: What does "1 Pair Common Cathode" configuration mean?

A: This configuration contains two diodes within a single package with a shared cathode connection. The common cathode terminal is internally connected, reducing the number of external leads required. All substitute parts maintain this configuration, ensuring electrical compatibility with existing circuit designs.

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