SB130 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SB130 is an active Schottky rectifier diode rated for 30V DC reverse voltage and 1A average rectified current in a through-hole DO-41 package. This component is designed for fast recovery applications requiring low forward voltage drop characteristics. The SB130 is ROHS3 compliant and maintains unlimited moisture sensitivity classification, making it suitable for standard industrial and commercial applications.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs. Substitutes must match critical electrical parameters including reverse voltage rating, forward current capacity, and package form factor.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500 µA @ 30 V	µA
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65°C ~ 125°C	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SB130 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal 30V
Current - Average Rectified (Io): Must equal 1A
Voltage - Forward (Vf) (Max) @ If: Must equal 550 mV @ 1 A
Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
Operating Temperature - Junction: Must span -65°C ~ 125°C

Mechanical Equivalence Criteria:

Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial configuration
Technology: Schottky

Compliance Criteria:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 1N5818-E3/73 meets all electrical and mechanical equivalence requirements and maintains identical compliance certifications.

Parameter Comparison

Parameter	SB130 (Main Part)	1N5818-E3/73 (Substitute)	Match Status
Manufacturer	SMC Diode Solutions	Vishay General Semiconductor - Diodes Division	Different Manufacturer
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	Equivalent
Current - Average Rectified (Io)	1 A	1 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	550 mV @ 1 A	550 mV @ 1 A	Equivalent
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Current - Reverse Leakage @ Vr	500 µA @ 30 V	1 mA @ 30 V	Different
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	Equivalent
Operating Temperature - Junction	-65°C ~ 125°C	-65°C ~ 125°C	Equivalent
Technology	Schottky	Schottky	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent

Engineering Selection Recommendations

The 1N5818-E3/73 is a direct electrical and mechanical substitute for the SB130. Both components are ROHS3 compliant, maintain identical moisture sensitivity classification, and operate across the same temperature range. Both are classified as active products with current inventory availability.

Selection between SB130 and 1N5818-E3/73 is based on supply availability, packaging format preference (Tape & Box versus Cut Tape), and manufacturer preference. The reverse leakage current specification differs between the two parts (500 µA for SB130 versus 1 mA for 1N5818-E3/73 at 30V), which may be a consideration in applications with strict leakage requirements.

Both components satisfy the core electrical requirements for 30V, 1A Schottky rectifier applications with fast recovery characteristics and are suitable for direct substitution in through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the 1N5818-E3/73 be used as a direct replacement for the SB130?

A: Yes. Both components share identical voltage ratings (30V), current ratings (1A), forward voltage characteristics (550 mV @ 1 A), and fast recovery speed specifications. Both are through-hole mounted in DO-41 package configurations and maintain ROHS3 compliance.

Q: What is the difference in reverse leakage current between these parts?

A: The SB130 specifies 500 µA reverse leakage at 30V, while the 1N5818-E3/73 specifies 1 mA at 30V. This difference should be evaluated for applications where leakage current is a critical design parameter.

Q: Are the package dimensions identical?

A: Both components use DO-204AL (DO-41) axial through-hole packages. Physical dimensions and pin spacing are equivalent, allowing direct PCB substitution without layout modifications.

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

A: Tape & Box packaging (SB130) provides components on tape with a protective box for storage and handling. Cut Tape packaging (1N5818-E3/73) provides components on tape without the box. Both formats contain the same component and are suitable for automated assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the SB130 and 1N5818-E3/73 are ROHS3 compliant and carry unlimited moisture sensitivity classification (MSL 1), making them suitable for standard manufacturing and storage conditions.

Q: What applications are these Schottky diodes suitable for?

A: These 30V, 1A Schottky rectifiers are designed for fast recovery rectification, power supply circuits, and applications requiring low forward voltage drop. The fast recovery characteristic (≤ 500ns) makes them suitable for switching power supplies and high-frequency rectification circuits.

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