SS23 Schottky Diode 30V 2A DO-214AA Equivalent & Substitute Parts

Part Overview

The SS23 is a Schottky rectifier diode manufactured by onsemi, rated for 30V DC reverse voltage and 2A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for design continuity, inventory management, and ongoing production support for existing applications utilizing this diode.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A
Technology	Schottky
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-65°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SS23 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 reverse bias protection.

Current Rating: The SS23 is rated for 2A average rectified current. Substitute parts with equal or higher current ratings (2A, 3A, or 4A) are electrically compatible, as they can safely handle the 2A requirement without exceeding thermal or electrical stress limits.

Package Compatibility: The SS23 uses DO-214AA (SMB) surface mount packaging. Substitutes must use identical or mechanically compatible packages to ensure PCB footprint compatibility. PMEG3020BEP,115 uses SOD-128 packaging and is not mechanically interchangeable without PCB redesign.

Technology: All substitute parts utilize Schottky diode technology, maintaining identical switching characteristics and forward voltage behavior.

Speed Characteristics: All candidates meet the fast recovery specification (≤ 500ns, > 200mA), ensuring equivalent transient response.

Product Status: Active status substitutes are preferred for new procurement. Parts marked "Not For New Designs" (SK33B-LTP, SK43BL-TP) are suitable only for legacy system support.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Package	Temp Range (°C)	Product Status	Packaging Type
SS23	onsemi	30 V	2	500 mV @ 2 A	DO-214AA, SMB	-65 ~ 125	Not For New Designs	Tape & Reel (TR)
MBRS230LT3G	onsemi	30 V	2	500 mV @ 2 A	DO-214AA, SMB	-55 ~ 125	Active	Cut Tape (CT) & Digi-Reel®
B130B-13-F	Diodes Incorporated	30 V	1	500 mV @ 1 A	DO-214AA, SMB	-65 ~ 150	Active	Tape & Reel (TR)
B130BQ-13-F	Diodes Incorporated	30 V	1	500 mV @ 1 A	DO-214AA, SMB	-65 ~ 150	Active	Tape & Reel (TR)
B130LB-13-F	Diodes Incorporated	30 V	2	445 mV @ 2 A	DO-214AA, SMB	-55 ~ 125	Active	Cut Tape (CT) & Digi-Reel®
B230-13-F	Diodes Incorporated	30 V	2	500 mV @ 2 A	DO-214AA, SMB	-65 ~ 150	Active	Cut Tape (CT) & Digi-Reel®
B230Q-13-F	Diodes Incorporated	30 V	2	500 mV @ 2 A	DO-214AA, SMB	-65 ~ 150	Active	Tape & Reel (TR)
B330B-13-F	Diodes Incorporated	30 V	3	500 mV @ 3 A	DO-214AA, SMB	-55 ~ 150	Active	Cut Tape (CT) & Digi-Reel®
PMEG3020BEP,115	Nexperia USA Inc.	30 V	2	450 mV @ 2 A	SOD-128	-55 ~ 150	Active	Tape & Reel (TR)
SK33B-LTP	Micro Commercial Co	30 V	3	500 mV @ 3 A	DO-214AA, SMB	-55 ~ 150	Not For New Designs	Tape & Reel (TR)
SK43BL-TP	Micro Commercial Co	30 V	4	450 mV @ 4 A	DO-214AA, SMB	-55 ~ 150	Not For New Designs	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitutes (Active Status, Identical Current Rating):

MBRS230LT3G (onsemi) and B230-13-F (Diodes Incorporated) are direct functional equivalents to the SS23. Both maintain 30V reverse voltage, 2A current rating, and DO-214AA packaging. MBRS230LT3G is manufactured by the same supplier as the original part. B230-13-F offers extended temperature range (-65°C to 150°C) and is available in higher volume. Both are ROHS3 compliant and carry unlimited moisture sensitivity rating.

Secondary Substitutes (Active Status, Higher Current Rating):

B130LB-13-F and B330B-13-F provide higher current capacity (2A and 3A respectively) while maintaining 30V voltage rating and DO-214AA packaging. These parts are suitable for applications where thermal margin or future design headroom is required. B330B-13-F includes AEC-Q101 automotive qualification.

Reduced Current Substitutes:

B130B-13-F and B130BQ-13-F are rated for 1A current. These parts are suitable only for applications where the actual circuit current requirement is 1A or less. B130BQ-13-F includes AEC-Q101 automotive qualification.

Package Variant (Different Footprint):

PMEG3020BEP,115 (Nexperia) matches the 30V/2A electrical specification but uses SOD-128 packaging instead of DO-214AA. This part requires PCB redesign and is not a direct mechanical substitute.

Legacy Substitutes (Not For New Designs):

SK33B-LTP and SK43BL-TP are available for legacy system support only. Both are marked "Not For New Designs" and should not be selected for new production designs.

Frequently Asked Questions (FAQ)

Q: Can B130B-13-F replace SS23 in all applications?

A: B130B-13-F is rated for 1A current, while SS23 is rated for 2A. This substitute is suitable only if the actual circuit current requirement does not exceed 1A. For applications requiring 2A capacity, use MBRS230LT3G, B230-13-F, or B130LB-13-F.

Q: What is the difference between B230-13-F and B230Q-13-F?

A: Both parts have identical electrical specifications (30V, 2A, 500mV forward voltage). B230Q-13-F includes AEC-Q101 automotive qualification and is supplied on Tape & Reel. B230-13-F is supplied on Cut Tape & Digi-Reel. Select based on packaging requirements and automotive compliance needs.

Q: Is PMEG3020BEP,115 a direct replacement for SS23?

A: PMEG3020BEP,115 matches the electrical specifications (30V, 2A) but uses SOD-128 packaging instead of DO-214AA. This requires PCB footprint modification and is not a direct mechanical substitute. Use only if PCB redesign is acceptable.

Q: Why are SK33B-LTP and SK43BL-TP marked "Not For New Designs"?

A: These parts have reached end-of-life status. They are available for legacy system support and repair only. For new production designs, select from active status alternatives such as MBRS230LT3G, B230-13-F, or B130LB-13-F.

Q: Can I use B330B-13-F (3A) instead of SS23 (2A)?

A: Yes. B330B-13-F maintains the same 30V voltage rating and DO-214AA packaging. The higher 3A current rating provides additional thermal margin and is electrically compatible with 2A circuit requirements. This substitution is suitable for applications requiring design headroom.

Q: What is the temperature range difference between SS23 and its substitutes?

A: SS23 operates from -65°C to 125°C. Most active substitutes (B230-13-F, B230Q-13-F, B330B-13-F) extend the upper limit to 150°C. MBRS230LT3G and B130LB-13-F operate to 125°C, matching the original part. Select based on application temperature requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity rating (MSL 1), matching the original SS23 specifications.

Q: Which substitute offers the best forward voltage performance?

A: B130LB-13-F and SK43BL-TP offer reduced forward voltage (445mV and 450mV respectively at their rated currents) compared to SS23 (500mV @ 2A). PMEG3020BEP,115 also provides 450mV @ 2A. Lower forward voltage reduces power dissipation in high-current applications.

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