SSL12H Schottky Diode 20V 1A DO-214AC Equivalent & Substitute Parts

Part Overview

The SSL12H is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20V DC reverse voltage and 1A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and carries AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and compliance certifications align with the SSL12H specifications, enabling direct replacement in circuit designs without functional degradation.

Key Parameters

Parameter	SSL12H Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	390 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	200	µA @ 20 V
Technology	Schottky	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55°C ~ 125°C	°C
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the SSL12H are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents share identical electrical specifications (20V reverse voltage, 1A average rectified current, 390 mV forward voltage at 1A, fast recovery speed ≤ 500ns) and mechanical packaging (DO-214AC SMA). These parts are direct functional replacements with no circuit redesign required.

Similar Substitutes maintain the same reverse voltage (20V) and current rating (1A or higher), fast recovery speed, and surface mount DO-214AC SMA packaging, but may exhibit variations in forward voltage drop (500–520 mV @ 1A), reverse leakage current (200–500 µA @ 20V), operating temperature range (-65°C to -50°C minimum), or capacitance characteristics. These parts are electrically compatible within standard circuit tolerances but require verification of forward voltage performance in applications sensitive to power dissipation.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 20V (mandatory match)
Current - Average Rectified (Io): 1A minimum (equal or higher acceptable)
Technology: Schottky (mandatory match)
Package / Case: DO-214AC, SMA (mandatory match for direct PCB compatibility)
Speed: Fast Recovery ≤ 500ns, > 200mA (mandatory match)
Mounting Type: Surface Mount (mandatory match)
RoHS Status: ROHS3 Compliant (mandatory match)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package / Case	Temp Range [°C]	Product Status	Grade	AEC-Q101
SSL12H	Taiwan Semiconductor Corporation	20	1	390 @ 1A	200 @ 20V	DO-214AC, SMA	-55 ~ 125	Active	Automotive	Yes
SSL12	Taiwan Semiconductor Corporation	20	1	390 @ 1A	200 @ 20V	DO-214AC, SMA	-55 ~ 125	Active	—	—
B120-13-F	Diodes Incorporated	20	1	500 @ 1A	500 @ 20V	DO-214AC, SMA	-65 ~ 150	Active	—	—
B120-E3/5AT	Vishay General Semiconductor - Diodes Division	20	1	520 @ 1A	200 @ 20V	DO-214AC, SMA	-65 ~ 125	Active	—	—
B120-E3/61T	Vishay General Semiconductor - Diodes Division	20	1	520 @ 1A	200 @ 20V	DO-214AC, SMA	-65 ~ 125	Active	—	—
B120B-13-F	Diodes Incorporated	20	1	500 @ 1A	500 @ 20V	DO-214AA, SMB	-65 ~ 150	Active	—	—
B120Q-13-F	Diodes Incorporated	20	1	500 @ 1A	500 @ 20V	DO-214AC, SMA	-65 ~ 150	Active	Automotive	Yes
B220AQ-13-F	Diodes Incorporated	20	2	500 @ 2A	500 @ 20V	DO-214AC, SMA	-65 ~ 150	Active	Automotive	Yes
CMSH1-20M TR13 PBFREE	Central Semiconductor Corp	20	1	500 @ 1A	500 @ 20V	DO-214AC, SMA	-65 ~ 150	Active	—	—
SK32A-LTP	Micro Commercial Co	20	3	500 @ 3A	500 @ 20V	DO-214AC, SMA	-50 ~ 125	Not For New Designs	—	—
SS12-E3/5AT	Vishay General Semiconductor - Diodes Division	20	1	500 @ 1A	200 @ 20V	DO-214AC, SMA	-65 ~ 125	Active	—	—

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): SSL12 (Taiwan Semiconductor Corporation) is the parametric equivalent to SSL12H, offering identical electrical specifications and mechanical packaging. Both parts carry Active product status and are suitable for direct substitution without circuit modification.

Automotive-Qualified Alternatives: B120Q-13-F (Diodes Incorporated) is an automotive-grade substitute with AEC-Q101 qualification matching the SSL12H. This part maintains 20V reverse voltage, 1A current rating, DO-214AC SMA packaging, and Active product status. Forward voltage is specified at 500 mV @ 1A (versus 390 mV for SSL12H), representing a 110 mV increase in forward drop. Reverse leakage is 500 µA @ 20V (versus 200 µA for SSL12H). Operating temperature range extends to -65°C minimum and 150°C maximum. This part is suitable for automotive applications requiring AEC-Q101 certification.

General-Purpose Alternatives (Active Status): B120-13-F, B120-E3/5AT, B120-E3/61T, CMSH1-20M TR13 PBFREE, and SS12-E3/5AT all maintain 20V reverse voltage, 1A current rating, DO-214AC SMA packaging, and Active product status. Forward voltage specifications range from 500 mV to 520 mV @ 1A. Reverse leakage varies between 200 µA and 500 µA @ 20V. Operating temperature ranges extend to -65°C minimum. These parts are electrically compatible for non-automotive applications where forward voltage tolerance and leakage current variation are acceptable.

Higher Current Capacity: B220AQ-13-F (Diodes Incorporated) provides 2A average rectified current with 20V reverse voltage rating, automotive grade, and AEC-Q101 qualification. This part is suitable for applications requiring higher current capacity than the 1A SSL12H specification.

Not Recommended for New Designs: SK32A-LTP (Micro Commercial Co) carries "Not For New Designs" product status and is excluded from new circuit development. This part provides 3A current capacity but should not be selected for new applications.

Package Incompatibility: B120B-13-F (Diodes Incorporated) uses DO-214AA SMB package instead of DO-214AC SMA. Direct PCB substitution is not possible without footprint modification.

Frequently Asked Questions (FAQ)

Q: Can SSL12H be replaced with SSL12? A: Yes. SSL12 is the parametric equivalent, sharing identical electrical specifications (20V, 1A, 390 mV forward voltage, 200 µA reverse leakage) and DO-214AC SMA packaging. Both parts are Active status and suitable for direct substitution.

Q: What is the difference between SSL12H and B120Q-13-F? A: Both parts maintain 20V reverse voltage, 1A current rating, DO-214AC SMA packaging, and Active product status. B120Q-13-F carries automotive grade and AEC-Q101 qualification. Forward voltage is 500 mV @ 1A (SSL12H: 390 mV), and reverse leakage is 500 µA @ 20V (SSL12H: 200 µA). Operating temperature range for B120Q-13-F extends to -65°C minimum and 150°C maximum (SSL12H: -55°C to 125°C). B120Q-13-F is suitable for automotive applications; SSL12H is specified for automotive use with AEC-Q101 qualification.

Q: Can I use B120-13-F as a direct replacement for SSL12H? A: B120-13-F maintains 20V reverse voltage, 1A current rating, and DO-214AC SMA packaging. Forward voltage is 500 mV @ 1A (versus 390 mV for SSL12H), and reverse leakage is 500 µA @ 20V (versus 200 µA). Operating temperature range extends to -65°C to 150°C. This part is electrically compatible for applications where the higher forward voltage drop and leakage current are acceptable. B120-13-F does not carry automotive qualification.

Q: Why is B120B-13-F not recommended as a substitute? A: B120B-13-F uses DO-214AA SMB package, which has different mechanical dimensions and PCB footprint compared to SSL12H's DO-214AC SMA package. Direct PCB substitution is not possible without circuit board redesign.

Q: Is SK32A-LTP suitable for new designs? A: No. SK32A-LTP carries "Not For New Designs" product status and should not be selected for new circuit development. Although it provides 3A current capacity with 20V reverse voltage and DO-214AC SMA packaging, its discontinued design status makes it unsuitable for long-term production applications.

Q: What is the advantage of B220AQ-13-F over SSL12H? A: B220AQ-13-F provides 2A average rectified current (versus 1A for SSL12H) while maintaining 20V reverse voltage and DO-214AC SMA packaging. It carries automotive grade and AEC-Q101 qualification. This part is suitable for applications requiring higher current capacity than the SSL12H specification.

Q: Can I substitute SSL12H with a part rated for higher voltage? A: Substitution with higher voltage-rated parts is not recommended based on the provided parameters. The SSL12H is specified for 20V reverse voltage applications. Parts rated for higher voltages may introduce unnecessary cost and size penalties without functional benefit.

Q: What packaging options are available for 20V 1A Schottky diodes? A: The SSL12H and most equivalent parts use DO-214AC SMA surface mount package. B120B-13-F uses DO-214AA SMB package, which is mechanically incompatible with SSL12H PCB footprints. All recommended substitutes maintain DO-214AC SMA packaging for direct PCB compatibility.

Q: How does forward voltage affect circuit performance? A: Forward voltage (Vf) determines the voltage drop across the diode during conduction. SSL12H specifies 390 mV @ 1A, while most substitute parts specify 500–520 mV @ 1A. Higher forward voltage increases power dissipation and heat generation. Applications sensitive to voltage drop or thermal performance should verify substitute part specifications before implementation.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All substitute parts listed carry ROHS3 Compliant status, matching the SSL12H compliance requirement. All parts are also REACH Unaffected and carry EAR99 ECCN classification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message