SS23HR5G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23HR5G is a 30V, 2A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in DO-214AA (SMB) surface mount package. This part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent alternatives for ongoing production and repair applications. The SS23HR5G meets automotive-grade specifications with AEC-Q101 qualification and operates across a junction temperature range of -55°C to 125°C. Substitute parts must maintain electrical equivalence across reverse voltage, forward current, and thermal performance parameters while accommodating available packaging and product status constraints.

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
Current - Reverse Leakage @ Vr	400	µA @ 30 V
Technology	Schottky	—
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 125	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SS23HR5G is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 500 mV @ 2 A
Technology: Schottky
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Secondary Compatibility Factors:

Operating Temperature Range: Minimum -55°C junction temperature
RoHS Compliance: ROHS3 Compliant preferred
Automotive Grade / AEC-Q101: Required for automotive applications
Current - Reverse Leakage @ Vr: ≤ 500 µA @ 30 V

Parts are grouped into three categories:

Direct Equivalents (Same Electrical & Package Specifications): Parts with identical 30V/2A ratings, 500 mV forward voltage, and DO-214AA SMB packaging.
Parametric Equivalents (Same Electrical, Different Packaging): Parts with identical 30V/2A electrical specifications but alternative surface mount packages (SMA vs. SMB).
Functional Alternatives (Different Current Rating): Parts with 30V reverse voltage and fast recovery Schottky technology but different current ratings (1A or 3A), suitable only when circuit design permits current derating or upgrading.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Temp Range [°C]	Grade	Product Status	RoHS
SS23HR5G	Taiwan Semiconductor	30	2	500 @ 2A	DO-214AA, SMB	-55 to 125	Automotive	Discontinued	ROHS3
SS23	Taiwan Semiconductor	30	2	500 @ 2A	DO-214AA, SMB	-55 to 125	—	Active	ROHS3
SS23H	Taiwan Semiconductor	30	2	500 @ 2A	DO-214AA, SMB	-55 to 125	Automotive	Active	ROHS3
B230-13-F	Diodes Incorporated	30	2	500 @ 2A	DO-214AA, SMB	-65 to 150	—	Active	ROHS3
B230A-13-F	Diodes Incorporated	30	2	500 @ 2A	DO-214AC, SMA	-65 to 150	—	Active	ROHS3
B230Q-13-F	Diodes Incorporated	30	2	500 @ 2A	DO-214AA, SMB	-65 to 150	Automotive	Active	ROHS3
B330B-13-F	Diodes Incorporated	30	3	500 @ 3A	DO-214AA, SMB	-55 to 150	Automotive	Active	ROHS3
5818SMJ/TR13	Microchip Technology	30	1	550 @ 1A	DO-214AA, SMB	-55 to 150	—	Active	Non-compliant
SK13-LTP	Micro Commercial Co	30	1	500 @ 1A	DO-214AA, SMB	-55 to 125	—	Not For New Designs	ROHS3
SK13-TP	Micro Commercial Co	30	1	550 @ 1A	DO-214AA, SMB	-55 to 125	—	Active	ROHS3
SK13E3/TR13	Microsemi Corporation	30	1	550 @ 1A	DO-214AA, SMB	-65 to 175	—	Active	ROHS3

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Recommended for Automotive Applications):

SS23H (Taiwan Semiconductor) is the primary recommended substitute. This part maintains identical electrical specifications (30V, 2A, 500 mV forward voltage) and DO-214AA SMB packaging as the SS23HR5G. SS23H carries automotive-grade designation with AEC-Q101 qualification, matching the original part's compliance profile. Product status is active with 685 units in stock. This part provides drop-in compatibility for automotive-qualified designs.

Tier 2 - Direct Electrical Equivalent (General Applications):

SS23 (Taiwan Semiconductor) provides identical electrical and package specifications with active product status and 6366 units in stock. This part lacks automotive-grade designation but maintains ROHS3 compliance and fast recovery Schottky technology. Suitable for non-automotive applications requiring 30V/2A performance.

B230Q-13-F (Diodes Incorporated) offers automotive-grade AEC-Q101 qualification with identical 30V/2A electrical specifications in DO-214AA SMB package. Operating temperature range extends to 150°C (versus 125°C for SS23HR5G). Product status is active with 12600 units available. This part accommodates higher thermal environments while maintaining automotive compliance.

B230-13-F (Diodes Incorporated) provides 30V/2A electrical equivalence in DO-214AA SMB package with extended operating temperature to 150°C. Product status is active with 20300 units in stock. Lacks automotive-grade designation; suitable for commercial applications.

Tier 3 - Package Variant (SMA Alternative):

B230A-13-F (Diodes Incorporated) maintains 30V/2A electrical specifications but uses DO-214AC SMA package instead of SMB. This part is suitable only when PCB layout accommodates SMA footprint. Product status is active with 64245 units in stock.

Tier 4 - Current Derating (1A Applications):

SK13-TP (Micro Commercial Co) and SK13E3/TR13 (Microsemi Corporation) provide 30V/1A Schottky rectifiers in DO-214AA SMB package. These parts are suitable only for applications where circuit design permits operation at 1A maximum current. Both maintain fast recovery characteristics and ROHS3 compliance. SK13E3/TR13 extends operating temperature to 175°C.

Tier 5 - Current Upgrading (3A Applications):

B330B-13-F (Diodes Incorporated) provides 30V/3A Schottky rectifier in DO-214AA SMB package with automotive-grade AEC-Q101 qualification. This part accommodates higher current applications and maintains identical package footprint. Product status is active with 188300 units in stock.

Parts Not Recommended:

5818SMJ/TR13 (Microchip Technology) is not RoHS3 compliant and carries RoHS non-compliant status, disqualifying it from applications requiring environmental compliance.

SK13-LTP (Micro Commercial Co) carries "Not For New Designs" product status and should not be selected for new development.

Frequently Asked Questions (FAQ)

Q: Can SS23 be used as a direct replacement for SS23HR5G?

A: SS23 provides identical electrical specifications (30V, 2A, 500 mV forward voltage) and DO-214AA SMB packaging. However, SS23 lacks automotive-grade designation and AEC-Q101 qualification present in SS23HR5G. Use SS23 only in non-automotive applications. For automotive applications, specify SS23H instead.

Q: What is the difference between SS23H and SS23HR5G?

A: Both parts share identical electrical specifications and automotive-grade AEC-Q101 qualification. SS23HR5G is discontinued at DiGi Electronics, while SS23H maintains active product status. SS23H is the direct replacement for discontinued SS23HR5G in automotive applications.

Q: Can B230Q-13-F replace SS23HR5G in automotive designs?

A: Yes. B230Q-13-F maintains 30V/2A electrical specifications, DO-214AA SMB package, and automotive-grade AEC-Q101 qualification. Operating temperature range extends to 150°C compared to 125°C for SS23HR5G. This part is suitable for automotive applications with higher thermal requirements.

Q: Why is B330B-13-F listed as a substitute if it has 3A current rating?

A: B330B-13-F is a functional alternative for applications where circuit design permits operation at higher current capacity. The 30V reverse voltage, fast recovery Schottky technology, and DO-214AA SMB package remain compatible. This part is suitable only when the application can utilize 3A capability or when current upgrading is required.

Q: Can 1A-rated parts (SK13-TP, SK13E3/TR13) replace the 2A SS23HR5G?

A: 1A-rated parts are not direct replacements for 2A applications. These parts are suitable only when circuit design permits operation at reduced 1A maximum current. Verify circuit requirements before selecting 1A alternatives.

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

A: DO-214AA SMB is the surface mount package footprint for the SS23HR5G. Substitute parts must use identical DO-214AA SMB package for direct PCB compatibility. B230A-13-F uses DO-214AC SMA package and requires PCB layout modification.

Q: Are all listed substitutes RoHS3 compliant?

A: No. 5818SMJ/TR13 is RoHS non-compliant and should not be selected for applications requiring environmental compliance. All other listed parts maintain ROHS3 compliance.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging is supplied on continuous reel for automated assembly processes. Cut Tape & Digi-Reel packaging is supplied in cut lengths for manual or lower-volume assembly. Both formats contain identical components; selection depends on assembly process requirements.

Q: Can SK13-LTP be used as a substitute?

A: No. SK13-LTP carries "Not For New Designs" product status and should not be selected for new development or production applications.

Q: What temperature range should be considered when selecting a substitute?

A: SS23HR5G operates from -55°C to 125°C junction temperature. Substitute parts with extended temperature ranges (such as B230-13-F at -65°C to 150°C) provide additional thermal margin but are not required for direct replacement. Verify application temperature requirements before selecting alternatives with different ranges.

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