SB340F055 Equivalent & Substitute Parts

Part Overview

The SB340F055 is a 40V 3A Schottky diode in DO-201AD axial through-hole packaging manufactured by onsemi. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The SB340F055 serves as a fast recovery rectifier diode suitable for applications requiring low forward voltage drop and rapid switching characteristics in the 40V, 3A operating range.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	40 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 40 V
Capacitance @ Vr, F	180pF @ 4V, 1MHz
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature - Junction	-65°C ~ 125°C
Technology	Schottky

Substitute Part Grouping Explanation

Substitution of the SB340F055 is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 40 V minimum
Current - Average Rectified (Io): 3 A minimum
Technology: Schottky
Mounting Type: Through Hole
Package / Case: DO-201AD or equivalent axial configuration

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: 500 mV to 525 mV @ 3 A acceptable range
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr: 100 µA to 2 mA @ 40 V acceptable range
Operating Temperature - Junction: -50°C to -65°C minimum, 125°C maximum

Substitute parts are grouped into two categories: Direct Equivalents (matching all primary parameters and package specifications) and Similar Alternatives (meeting primary electrical parameters with minor variations in secondary characteristics or packaging variants).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Product Status
SB340F055	onsemi	40 V	3 A	500 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Obsolete
SR304-AP	Micro Commercial Co	40 V	3 A	500 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Active
SR304-BP	Micro Commercial Co	40 V	3 A	500 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Active
SR304-TP	Micro Commercial Co	40 V	3 A	500 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Active
1N5822RLG	onsemi	40 V	3 A	525 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	2 mA @ 40 V	DO-201AA, DO-27, Axial	Active
1N5822-TP	Micro Commercial Co	40 V	3 A	525 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Active
1N5822-E3/73	Vishay General Semiconductor - Diodes Division	40 V	3 A	525 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	2 mA @ 40 V	DO-201AD	Active
1N5822	Microchip Technology	40 V	3 A	500 mV @ 3 A	Fast Recovery ≤ 500ns, > 200mA	100 µA @ 40 V	B, Axial	Active
1N5822G	Microchip Technology	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Axial	Active
SR804HB0G	Taiwan Semiconductor Corporation	40 V	8 A	550 mV @ 8 A	Fast Recovery ≤ 500ns, > 200mA	500 µA @ 40 V	DO-201AD	Active

Engineering Selection Recommendations

Direct Equivalent Substitutes (Recommended Primary Choices):

The SR304 series from Micro Commercial Co (SR304-AP, SR304-BP, SR304-TP) provides direct electrical and mechanical equivalence to the SB340F055. These parts match all primary parameters including 40V reverse voltage, 3A average rectified current, 500mV forward voltage at 3A, and identical DO-201AD packaging. All three variants are in active product status with REACH compliance and are suitable for direct replacement without circuit modification.

Compatible Active Alternatives:

The 1N5822-TP from Micro Commercial Co and 1N5822-E3/73 from Vishay General Semiconductor - Diodes Division are compatible substitutes with identical electrical ratings and DO-201AD packaging. These parts exhibit slightly elevated forward voltage (525mV @ 3A) within acceptable operating margins. Both are ROHS3 compliant and in active production status.

The 1N5822RLG from onsemi (same manufacturer as the original SB340F055) provides electrical compatibility with identical voltage and current ratings. This part is available in DO-201AA, DO-27, and axial configurations and maintains active product status.

The 1N5822 from Microchip Technology meets all primary electrical specifications with 40V reverse voltage and 3A current rating. This part is available in bulk packaging with active status and REACH compliance.

Higher Current Alternative:

The SR804HB0G from Taiwan Semiconductor Corporation is rated for 8A average rectified current at 40V reverse voltage in DO-201AD packaging. This part exceeds the 3A requirement and is suitable for applications requiring additional current margin. It carries AEC-Q101 automotive qualification and ROHS3 compliance.

Compliance and Availability:

All recommended substitute parts maintain REACH compliance status. The SR304 series and 1N5822-TP variants are available in quantities exceeding 900 units. The 1N5822 from Microchip Technology offers the highest inventory availability at 26,834 units.

Frequently Asked Questions (FAQ)

Q: Can the SR304-AP, SR304-BP, and SR304-TP be used interchangeably with the SB340F055?

A: Yes. These three Micro Commercial Co variants are direct electrical and mechanical equivalents to the SB340F055. All three match the 40V reverse voltage, 3A current rating, 500mV forward voltage specification, and DO-201AD axial through-hole packaging. The part number suffix indicates packaging format (AP, BP, TP refer to different tape and reel configurations), not electrical differences.

Q: What is the difference between the 1N5822-TP and 1N5822-E3/73?

A: Both parts meet the primary electrical requirements of 40V, 3A Schottky diodes in DO-201AD packaging. The 1N5822-TP is manufactured by Micro Commercial Co and exhibits 525mV forward voltage with 500µA reverse leakage. The 1N5822-E3/73 is manufactured by Vishay General Semiconductor - Diodes Division and exhibits 525mV forward voltage with 2mA reverse leakage. Both are ROHS3 compliant and suitable for direct substitution.

Q: Is the SR804HB0G a suitable replacement for the SB340F055?

A: The SR804HB0G is electrically compatible but rated for 8A average rectified current versus the 3A requirement of the SB340F055. This higher current rating provides additional design margin and is suitable for applications where increased current capacity is beneficial or required. The part maintains identical 40V reverse voltage rating and DO-201AD packaging. The SR804HB0G carries AEC-Q101 automotive qualification.

Q: Why is the 1N5822G listed as a substitute if electrical parameters are not specified?

A: The 1N5822G from Microchip Technology is listed based on the base product number 1N5822 series compatibility and axial through-hole packaging. However, complete electrical parameter specifications are not provided in the available data. Verification of specific electrical characteristics is necessary before selection for critical applications.

Q: What is the operating temperature range difference between the SB340F055 and substitute parts?

A: The SB340F055 operates from -65°C to 125°C junction temperature. The SR304 series (SR304-AP, SR304-BP, SR304-TP) operates from -50°C to 125°C, providing a 15°C reduction in minimum operating temperature. The 1N5822-TP operates from -55°C to 125°C. For applications requiring the full -65°C minimum temperature, the 1N5822-E3/73, 1N5822RLG, or 1N5822 from Microchip Technology maintain the -65°C specification.

Q: Are all substitute parts REACH compliant?

A: Yes. All substitute parts listed maintain REACH Unaffected status, matching the compliance profile of the original SB340F055.

Q: What packaging options are available for substitute parts?

A: The SR304 series and 1N5822-TP are available in DO-201AD axial through-hole packaging, matching the original SB340F055. The 1N5822RLG is available in DO-201AA, DO-27, and axial configurations. The 1N5822 from Microchip Technology is available in B and axial package variants. The SR804HB0G is available in DO-201AD axial packaging. All maintain through-hole mounting type compatibility.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message