SS23H Schottky Diode 30V 2A Equivalent & Substitute Parts

Part Overview

The SS23H is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30V DC reverse voltage and 2A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as Active product status and carries AEC-Q101 automotive qualification. Equivalent and substitute parts are identified based on matching or exceeding the electrical specifications and package compatibility of the original SS23H device.

Key Parameters

Parameter	SS23H Specification
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 30 V
Package / Case	DO-214AA, SMB
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SS23H is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a minimum DC reverse voltage rating of 30V to ensure equivalent or superior voltage withstand capability.

Current Rating: Substitute parts are grouped by average rectified current capacity. Direct equivalents carry 2A rating. Parts rated at 3A or 4A provide higher current capacity and are suitable for applications where the SS23H 2A rating is sufficient but additional margin is desired.

Package Compatibility: The SS23H uses DO-214AA (SMB) surface mount package. Substitute parts must use identical or mechanically compatible packages. The B230A-13-F uses DO-214AC (SMA) package, which differs in footprint and is not mechanically interchangeable without PCB redesign.

Forward Voltage: The SS23H specifies 500 mV maximum forward voltage at 2A. Substitute parts with equal or lower forward voltage at their rated current are acceptable.

Reverse Leakage Current: The SS23H specifies 400 µA maximum reverse leakage at 30V. Substitute parts with equal or lower leakage current are acceptable.

Temperature Range: The SS23H operates from -55°C to 125°C junction temperature. Substitute parts with equal or wider operating ranges are acceptable.

Automotive Grade & Qualification: The SS23H carries Automotive grade and AEC-Q101 qualification. Substitute parts with matching automotive qualification are preferred for automotive applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Tj Range	Grade	AEC-Q101	Product Status
SS23H	Taiwan Semiconductor	30 V	2 A	500 mV @ 2 A	400 µA @ 30 V	DO-214AA, SMB	-55°C ~ 125°C	Automotive	Yes	Active
B230-13-F	Diodes Incorporated	30 V	2 A	500 mV @ 2 A	500 µA @ 30 V	DO-214AA, SMB	-65°C ~ 150°C	—	—	Active
B230A-13-F	Diodes Incorporated	30 V	2 A	500 mV @ 2 A	500 µA @ 30 V	DO-214AC, SMA	-65°C ~ 150°C	—	—	Active
B330B-13-F	Diodes Incorporated	30 V	3 A	500 mV @ 3 A	500 µA @ 30 V	DO-214AA, SMB	-55°C ~ 150°C	Automotive	Yes	Active
SK13-LTP	Micro Commercial Co	30 V	1 A	500 mV @ 1 A	500 µA @ 30 V	DO-214AA, SMB	-55°C ~ 125°C	—	—	Not For New Designs
SK33B-LTP	Micro Commercial Co	30 V	3 A	500 mV @ 3 A	500 µA @ 30 V	DO-214AA, SMB	-55°C ~ 150°C	—	—	Not For New Designs
SK43BL-TP	Micro Commercial Co	30 V	4 A	450 mV @ 4 A	500 µA @ 30 V	DO-214AA, SMB	-55°C ~ 150°C	—	—	Not For New Designs
SS23-E3/52T	Vishay General Semiconductor	30 V	2 A	500 mV @ 2 A	400 µA @ 30 V	DO-214AA, SMB	-65°C ~ 125°C	—	—	Active
SS23S-E3/61T	Vishay General Semiconductor	30 V	2 A	550 mV @ 2 A	200 µA @ 30 V	DO-214AA, SMB	-55°C ~ 150°C	—	—	Active
SSB43L-E3/52T	Vishay General Semiconductor	30 V	4 A	450 mV @ 4 A	600 µA @ 30 V	DO-214AA, SMB	-65°C ~ 150°C	—	—	Active
STPS130U	STMicroelectronics	30 V	1 A	550 mV @ 1 A	10 µA @ 30 V	DO-214AA, SMB	—	—	—	Active

Engineering Selection Recommendations

Direct Electrical Equivalents (2A Rating, DO-214AA Package):

The B230-13-F from Diodes Incorporated and SS23-E3/52T from Vishay General Semiconductor are direct electrical equivalents to the SS23H. Both maintain 30V reverse voltage, 2A average rectified current, and 500 mV forward voltage at 2A. Both are Active product status. The B230-13-F offers extended operating temperature range (-65°C to 150°C) compared to the SS23H (-55°C to 125°C). The SS23-E3/52T provides identical reverse leakage current (400 µA) to the SS23H.

Automotive-Qualified Substitute (3A Rating, DO-214AA Package):

The B330B-13-F from Diodes Incorporated is rated for 3A average rectified current while maintaining 30V reverse voltage and DO-214AA package compatibility. This part carries Automotive grade and AEC-Q101 qualification, matching the SS23H automotive credentials. The B330B-13-F is suitable for applications where the SS23H 2A rating is adequate but higher current capacity provides design margin. Product status is Active.

Package-Incompatible Substitute (2A Rating, DO-214AC Package):

The B230A-13-F from Diodes Incorporated is electrically equivalent to the SS23H but uses DO-214AC (SMA) package instead of DO-214AA (SMB). This part is not mechanically interchangeable without PCB redesign. Selection of this part requires footprint modification.

Higher Current Alternatives (3A and 4A Ratings, DO-214AA Package):

The SK33B-LTP (3A) and SK43BL-TP (4A) from Micro Commercial Co maintain 30V reverse voltage and DO-214AA package compatibility. Both parts are marked as Not For New Designs product status. The SK43BL-TP offers lower forward voltage (450 mV @ 4A) compared to the SS23H (500 mV @ 2A).

Lower Current Alternatives (1A Rating, DO-214AA Package):

The SK13-LTP from Micro Commercial Co and STPS130U from STMicroelectronics are rated for 1A average rectified current. The SK13-LTP is marked as Not For New Designs. The STPS130U is Active product status but offers significantly lower reverse leakage current (10 µA @ 30V) compared to the SS23H (400 µA @ 30V).

Higher Current Vishay Alternative (4A Rating, DO-214AA Package):

The SSB43L-E3/52T from Vishay General Semiconductor is rated for 4A average rectified current with 450 mV forward voltage at 4A. This part maintains DO-214AA package compatibility and is Active product status. Extended operating temperature range (-65°C to 150°C) exceeds the SS23H specification.

Frequently Asked Questions (FAQ)

Q: Can the B230A-13-F replace the SS23H directly on the PCB?

A: No. The B230A-13-F uses DO-214AC (SMA) package while the SS23H uses DO-214AA (SMB) package. These packages have different footprints and are not mechanically interchangeable. PCB redesign is required for this substitution.

Q: Is the B330B-13-F suitable as a drop-in replacement for the SS23H?

A: Yes, from an electrical and mechanical standpoint. The B330B-13-F maintains 30V reverse voltage, uses identical DO-214AA (SMB) package, and carries Automotive grade with AEC-Q101 qualification. The 3A current rating exceeds the SS23H 2A requirement, providing additional design margin. Both parts are Active product status.

Q: Why are SK13-LTP and SK33B-LTP marked as Not For New Designs?

A: These parts from Micro Commercial Co carry Not For New Designs product status, indicating they are in end-of-life phase. While electrically functional, they are not recommended for new circuit designs. Active alternatives should be prioritized.

Q: What is the difference between SS23-E3/52T and SS23S-E3/61T?

A: Both are Vishay SS23 base product variants in DO-214AA package rated for 2A at 30V. The SS23-E3/52T specifies 500 mV forward voltage at 2A and 400 µA reverse leakage at 30V. The SS23S-E3/61T specifies 550 mV forward voltage at 2A but lower reverse leakage (200 µA at 30V) and extended operating temperature range (-55°C to 150°C). Selection depends on forward voltage and leakage current requirements.

Q: Can I use a 1A-rated diode (SK13-LTP or STPS130U) in place of the SS23H?

A: No. The SS23H is rated for 2A average rectified current. Using a 1A-rated diode would exceed the device's current rating and cause thermal stress and potential failure. The substitute diode must be rated for equal or higher current capacity than the original part.

Q: Does the STPS130U from STMicroelectronics have automotive qualification?

A: No. The STPS130U does not carry Automotive grade or AEC-Q101 qualification. It is suitable for commercial applications but not recommended for automotive applications where the SS23H's AEC-Q101 qualification is required.

Q: What is the significance of the DO-214AA package designation?

A: DO-214AA is the industry standard package designation for SMB (Surface Mount Body) Schottky diodes. All substitute parts using this package designation are mechanically compatible with the SS23H footprint and can be used as drop-in replacements without PCB modification, provided electrical specifications are met.

Q: Why does the B330B-13-F have higher current rating (3A) than the SS23H (2A)?

A: Higher current rating indicates the device can safely conduct greater average rectified current without exceeding thermal limits. A 3A-rated device can be used in applications requiring 2A or less. The B330B-13-F provides design margin and is suitable for applications where future current requirements may increase.

Q: Are all listed substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 Compliant status, matching the SS23H compliance level. All parts are also REACH Unaffected and carry EAR99 ECCN classification.

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