SB560B Schottky Diode Equivalent & Substitute Parts

Part Overview

The SB560B is a Schottky rectifier diode manufactured by Diodes Incorporated, rated for 60V DC reverse voltage and 5A average rectified current in a DO-201AD axial through-hole package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	60 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	670 mV @ 5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 60 V
Mounting Type	Through Hole
Package / Case	DO-201AD, Axial
Operating Temperature - Junction	-65°C ~ 150°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SB560B is determined by electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) rating must equal or exceed 60V
Current - Average Rectified (Io) rating must equal or exceed 5A
Package / Case must be DO-201AD, Axial (through-hole mounting)
Technology must be Schottky
Speed classification must be Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Operating Temperature - Junction range
Forward voltage characteristics
Reverse leakage current specifications
RoHS and regulatory compliance status

Parameter Comparison

Parameter	SB560B (Main Part)	SB560-T (Parametric Equivalent)	SR306-TP (Manufacturer Recommended)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Micro Commercial Co
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V
Current - Average Rectified (Io)	5 A	5 A	3 A
Voltage - Forward (Vf) (Max) @ If	670 mV @ 5 A	670 mV @ 5 A	720 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 60 V	500 µA @ 60 V	1 mA @ 60 V
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Mounting Type	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 125°C
Technology	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Bulk	Cut Tape (CT)	Cut Tape (CT)

Engineering Selection Recommendations

SB560-T (Parametric Equivalent - Primary Recommendation)

The SB560-T is a direct parametric equivalent to the SB560B, manufactured by Diodes Incorporated. This part maintains identical electrical specifications: 60V reverse voltage, 5A average rectified current, 670mV forward voltage at 5A, and identical fast recovery speed characteristics. The SB560-T is in active product status with higher inventory availability (16,142 units in stock). Both parts share identical operating temperature range (-65°C ~ 150°C) and RoHS3 compliance. The primary difference is packaging format (Cut Tape versus bulk), which does not affect electrical performance. This substitute provides direct functional replacement with no circuit redesign required.

SR306-TP (Manufacturer Recommended - Conditional Substitute)

The SR306-TP is a Schottky diode from Micro Commercial Co with identical 60V reverse voltage rating and DO-201AD package. However, this part has a reduced current rating of 3A compared to the 5A specification of the SB560B. The SR306-TP exhibits higher forward voltage (720mV @ 3A) and higher reverse leakage current (1mA @ 60V). The operating temperature range is narrower (-55°C ~ 125°C). This substitute is suitable only for applications where the circuit current requirement does not exceed 3A and the narrower temperature range is acceptable. Use of this part in circuits designed for 5A operation will result in thermal stress and potential component failure.

Frequently Asked Questions (FAQ)

Q: Can SB560-T directly replace SB560B in existing designs?

A: Yes. The SB560-T is a parametric equivalent with identical electrical specifications (60V, 5A, 670mV forward voltage, fast recovery speed). No circuit modifications are required. The only difference is packaging format (Cut Tape versus bulk), which does not affect electrical performance or PCB mounting compatibility.

Q: Is SR306-TP a suitable replacement for SB560B?

A: SR306-TP is suitable only for applications where circuit current does not exceed 3A. The part has a reduced current rating (3A versus 5A), higher forward voltage (720mV @ 3A), and higher reverse leakage current (1mA @ 60V). Applications requiring the full 5A rating must use SB560-T instead.

Q: What is the difference between Cut Tape and bulk packaging?

A: Cut Tape (CT) packaging provides components on continuous tape in specified quantities, suitable for automated assembly. Bulk packaging provides loose components. Both formats contain identical components with identical electrical specifications. Selection depends on assembly process requirements and procurement volume.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both SB560-T and SR306-TP are ROHS3 compliant, matching the compliance status of the SB560B.

Q: What is the operating temperature difference between SB560-T and SR306-TP?

A: SB560-T operates from -65°C to 150°C (junction temperature), identical to SB560B. SR306-TP operates from -55°C to 125°C, a narrower range. Applications requiring operation below -55°C or above 125°C must use SB560-T.

Q: Can I use SR306-TP in a 5A circuit if I derate the current?

A: No. The SR306-TP is rated for maximum 3A average rectified current. Using this part in a circuit designed for 5A operation, regardless of actual current draw, violates the component's electrical rating and creates reliability risk.

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