SS23FA Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23FA is a 30V, 2A Schottky rectifier diode manufactured by onsemi in SOD-123FA surface mount packaging. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part is automotive-grade with AEC-Q101 qualification and is RoHS3 compliant. Due to its discontinued status, equivalent substitute parts are necessary for ongoing production support, maintenance applications, and design continuity where this diode specification is required.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Technology	Schottky	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—

Substitute Part Grouping Explanation

Substitution of the SS23FA is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Current - Average Rectified (Io): 2A minimum
Voltage - Forward (Vf) (Max) @ If: 500mV or lower at 2A
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
Technology: Schottky

Mechanical & Environmental Requirements:

Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Operating Temperature Range: Must encompass or exceed -55°C to 125°C

Compliance Requirements:

Automotive Grade and AEC-Q101 qualification preferred for direct replacement in automotive applications

Substitute parts meeting these criteria are functionally interchangeable with the SS23FA, though package form factors may differ. Physical PCB layout modifications may be required when package types differ between the main part and substitute.

Parameter Comparison

Parameter	SS23FA (onsemi)	SS2030FL_R1_00001 (Panjit)	SS2FL3HM3/H (Vishay)
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	500 mV @ 2 A	540 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 30 V	100 µA @ 30 V	200 µA @ 30 V
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123W	SOD-123F	DO-219AB
Operating Temperature - Junction	-55°C ~ 125°C	-50°C ~ 150°C	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Automotive	Not specified	Automotive
Qualification	AEC-Q101	Not specified	AEC-Q101
Product Status	Not For New Designs	Active	Active

Engineering Selection Recommendations

SS2030FL_R1_00001 (Panjit International Inc.): This substitute meets all core electrical parameters and is RoHS3 compliant with active product status. The part operates across an extended temperature range (-50°C to 150°C) and exhibits lower reverse leakage current (100 µA vs. 400 µA), which may provide improved performance in certain applications. However, automotive grade and AEC-Q101 qualification are not specified for this part. The SOD-123F package differs from the SOD-123W of the original part, requiring PCB layout verification. This substitute is suitable for non-automotive applications or where automotive qualification is not mandatory.

SS2FL3HM3/H (Vishay General Semiconductor - Diodes Division): This substitute provides direct automotive-grade equivalence with AEC-Q101 qualification matching the original SS23FA. All electrical parameters are met, with forward voltage at 540 mV remaining within acceptable tolerance for Schottky diode applications. The part operates across -55°C to 150°C, fully encompassing the original temperature range. Reverse leakage current is 200 µA, intermediate between the original and the Panjit alternative. The DO-219AB (SMF) package differs from SOD-123W, necessitating PCB layout modification. This substitute is the preferred choice for automotive applications requiring maintained qualification status and compliance continuity.

Frequently Asked Questions (FAQ)

Q: Can the SS2030FL_R1_00001 be used as a direct replacement for the SS23FA in automotive applications?

A: The SS2030FL_R1_00001 meets all core electrical specifications (30V, 2A, 500mV forward voltage, fast recovery). However, automotive grade and AEC-Q101 qualification are not specified for this part. Use in automotive applications requires verification that your application does not mandate these certifications. PCB layout modification is required due to package differences (SOD-123F vs. SOD-123W).

Q: What is the primary difference between the SS2FL3HM3/H and the original SS23FA?

A: Both parts are automotive-grade with AEC-Q101 qualification and meet the 30V, 2A electrical specification. The SS2FL3HM3/H has a forward voltage of 540 mV at 2A compared to 500 mV for the SS23FA, a 40 mV difference typical within Schottky diode manufacturing tolerances. The package differs (DO-219AB vs. SOD-123W), requiring PCB layout changes. The Vish

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