SB130 Equivalent & Substitute Parts

Part Overview

The SB130 is a Schottky rectifier diode manufactured by onsemi, rated for 30 V DC reverse voltage and 1 A average rectified current in a DO-41 through-hole axial package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The SB130 serves applications requiring fast recovery Schottky diode performance with low forward voltage drop characteristics typical of this device category.

Key Parameters

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

Substitute Part Grouping Explanation

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

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 1 A
Technology: Schottky
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial configuration

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may range from 480 mV to 550 mV @ 1 A
Current - Reverse Leakage @ Vr: Substitute parts may range from 500 µA to 1 mA @ 30 V
Operating Temperature - Junction: Substitute parts may extend to -55°C ~ 150°C or remain at -65°C ~ 125°C
Capacitance @ Vr, F: Specification may be listed or omitted without affecting substitution validity

Substitute parts must maintain active product status or equivalent compliance certifications (RoHS3, REACH Unaffected) to ensure long-term availability and regulatory alignment.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ 1A	Reverse Leakage @ 30V	Package	Status
SB130	onsemi	30 V	1 A	500 mV	500 µA	DO-41	Obsolete
1N5818-T	Diodes Incorporated	30 V	1 A	550 mV	1 mA	DO-41	Active
1N5818RLG	onsemi	30 V	1 A	550 mV	1 mA	Axial	Active
1N5818-E3/54	Vishay General Semiconductor - Diodes Division	30 V	1 A	550 mV	1 mA	DO-204AL (DO-41)	Active
1N5818	Microchip Technology	30 V	1 A	550 mV	1 mA	DO-41	Active
1N5818G	onsemi	30 V	1 A	550 mV	1 mA	Axial	Active
1N5818-AP	Micro Commercial Co	30 V	1 A	550 mV	1 mA	DO-41	Active
1N5818-TP	Micro Commercial Co	30 V	1 A	550 mV	1 mA	DO-41	Active
10DQ03	SMC Diode Solutions	30 V	1 A	550 mV	500 µA	DO-41	Active
SB130-E3/54	Vishay General Semiconductor - Diodes Division	30 V	1 A	480 mV	500 µA	DO-204AL (DO-41)	Active

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The 1N5818-T (Diodes Incorporated), 1N5818RLG (onsemi), and 1N5818-E3/54 (Vishay) are direct functional equivalents with active product status. These parts maintain identical voltage and current ratings, fast recovery Schottky technology, and through-hole mounting. The 1N5818-T and 1N5818-E3/54 are available in DO-41 packaging, matching the original SB130 form factor. All three parts carry RoHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for new designs.

Secondary Substitutes (Acceptable Alternatives):

The 1N5818 (Microchip Technology), 1N5818G (onsemi), 1N5818-AP (Micro Commercial Co), and 1N5818-TP (Micro Commercial Co) provide equivalent electrical performance with active product status. These parts differ primarily in packaging configuration (axial vs. DO-41) and reverse leakage characteristics (1 mA vs. 500 µA @ 30 V). Selection depends on PCB layout requirements and acceptable leakage current specifications.

Alternative with Matched Leakage Characteristics:

The 10DQ03 (SMC Diode Solutions) and SB130-E3/54 (Vishay) maintain the original SB130 reverse leakage specification of 500 µA @ 30 V, providing closer electrical matching for applications sensitive to leakage current. The SB130-E3/54 is a direct onsemi SB130 series variant with active status and superior forward voltage performance (480 mV @ 1 A).

Compliance and Availability:

All recommended substitutes carry RoHS3 compliance and REACH Unaffected status. Inventory availability ranges from 667 to 39,320 units across substitute options, supporting both prototype and production-volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1N5818-T directly replace the SB130 in existing designs?

A: Yes. The 1N5818-T maintains identical voltage (30 V), current (1 A), and fast recovery Schottky technology specifications. Both components use DO-41 through-hole packaging, enabling direct PCB substitution without layout modification. Forward voltage increases from 500 mV to 550 mV, which is within acceptable tolerance for most applications.

Q: What is the difference between 1N5818G and 1N5818-T?

A: Both parts are 30 V, 1 A Schottky diodes with identical electrical ratings. The primary difference is packaging: 1N5818G uses axial configuration (bulk packaging), while 1N5818-T uses DO-41 configuration (cut tape packaging). Electrical performance is equivalent.

Q: Does the SB130-E3/54 offer advantages over other 1N5818 variants?

A: The SB130-E3/54 maintains the original SB130 reverse leakage specification (500 µA @ 30 V) and provides superior forward voltage performance (480 mV @ 1 A). For applications where leakage current is a critical parameter, this variant provides closer electrical matching to the original SB130.

Q: Are all substitute parts RoHS3 compliant?

A: All recommended substitute parts carry RoHS3 compliance certification, with the exception of 10DQ03 (SMC Diode Solutions), which is REACH Affected. For applications requiring strict RoHS3 compliance, select from onsemi, Diodes Incorporated, Vishay, Microchip Technology, or Micro Commercial Co variants.

Q: What is the impact of reverse leakage variation (500 µA vs. 1 mA)?

A: Reverse leakage variation affects power dissipation and circuit performance in high-impedance applications. The SB130 and 10DQ03 specify 500 µA @ 30 V, while most 1N5818 variants specify 1 mA @ 30 V. For applications where leakage current is non-critical, this variation is acceptable. For precision analog circuits, select parts with 500 µA specification.

Q: Can axial-packaged substitutes (1N5818G, 1N5818RLG) be used in place of DO-41 packaged SB130?

A: Axial and DO-41 packages are mechanically and electrically equivalent for through-hole applications. Substitution depends on PCB layout compatibility. If the original design accommodates axial lead spacing, these parts are suitable. If the PCB is designed specifically for DO-41 lead geometry, select DO-41 packaged alternatives (1N5818-T, 1N5818-E3/54, 1N5818-AP, 1N5818-TP).

Q: What is the operating temperature range difference between SB130 and substitute parts?

A: The SB130 operates from -65°C to 125°C. Most 1N5818 variants maintain this range. The Microchip 1N5818 extends to -55°C to 150°C, providing wider temperature coverage. For applications requiring the full -65°C lower limit, select onsemi, Diodes Incorporated, Vishay, or Micro Commercial Co variants.

Q: Is the 10DQ03 a suitable substitute despite REACH Affected status?

A: The 10DQ03 is electrically equivalent with active product status and RoHS3 compliance. REACH Affected status indicates the component contains substances of concern but remains compliant with current regulations. Selection depends on end-application regulatory requirements. For applications with strict REACH Unaffected requirements, select alternative substitutes.

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