SSL23 Schottky Diode 30V 2A DO-214AA Equivalent & Substitute Parts

Part Overview

The SSL23 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30V DC reverse voltage and 2A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching or superior electrical ratings and compatible package configurations. Alternative parts become necessary when the primary SSL23 is unavailable, when supply chain optimization is required, or when design flexibility permits selection from multiple qualified sources meeting the same functional requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	30	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) Maximum @ If	410	mV @ 2A
Speed - Fast Recovery	≤ 500	ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400	µA @ 30V
Operating Temperature - Junction	-55 to 125	°C
Package / Case	DO-214AA, SMB	Surface Mount
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SSL23 is determined by the following critical parameters:

Mandatory Matching Criteria:

Voltage - DC Reverse (Vr) Maximum: 30V (equal or higher acceptable)
Current - Average Rectified (Io): 2A (equal or higher acceptable)
Package / Case: DO-214AA, SMB (physical and electrical compatibility required)
Technology: Schottky (functional requirement)
Mounting Type: Surface Mount (assembly compatibility)

Secondary Compatibility Factors:

Voltage - Forward (Vf) Maximum @ If: 410 mV @ 2A (lower values indicate superior performance; higher values acceptable within design margins)
Current - Reverse Leakage @ Vr: 400 µA @ 30V (lower values preferred; higher values acceptable)
Operating Temperature Range: -55°C to 125°C (equal or wider range acceptable)
RoHS3 Compliance and MSL Level 1 (regulatory and handling compatibility)

Substitute parts are classified as Direct Equivalents when all mandatory criteria and electrical specifications match within acceptable tolerances, and as Similar Alternatives when current rating or package variant differs while maintaining functional compatibility within the 30V, 2A application envelope.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) mV @ If	Reverse Leakage µA @ 30V	Tj (°C)	Package	Status
SSL23	Taiwan Semiconductor Corporation	30	2	410 @ 2A	400	-55 to 125	DO-214AA, SMB	Active
SK23	Good-Ark Semiconductor	30	2	550 @ 2A	500	-55 to 150	DO-214AA, SMB	Active
SL23-E3/52T	Vishay General Semiconductor - Diodes Division	30	2	440 @ 2A	400	-55 to 125	DO-214AA, SMB	Active
SL23-E3/5BT	Vishay General Semiconductor - Diodes Division	30	2	440 @ 2A	400	-55 to 125	DO-214AA, SMB	Active
B230-13-F	Diodes Incorporated	30	2	500 @ 2A	500	-65 to 150	DO-214AA, SMB	Active
B230A-13-F	Diodes Incorporated	30	2	500 @ 2A	500	-65 to 150	DO-214AC, SMA	Active
B330B-13-F	Diodes Incorporated	30	3	500 @ 3A	500	-55 to 150	DO-214AA, SMB	Active
SK13-LTP	Micro Commercial Co	30	1	500 @ 1A	500	-55 to 125	DO-214AA, SMB	Not For New Designs
SK33B-LTP	Micro Commercial Co	30	3	500 @ 3A	500	-55 to 150	DO-214AA, SMB	Not For New Designs
SK43BL-TP	Micro Commercial Co	30	4	450 @ 4A	500	-55 to 150	DO-214AA, SMB	Not For New Designs
SS23	Taiwan Semiconductor Corporation	30	2	500 @ 2A	400	-55 to 125	DO-214AA, SMB	Active

Engineering Selection Recommendations

Direct Equivalents (Preferred for 1:1 Replacement):

The SL23-E3/52T and SL23-E3/5BT (Vishay General Semiconductor - Diodes Division) are direct functional equivalents to the SSL23. Both parts match the 30V, 2A ratings, DO-214AA package configuration, and operating temperature range of -55°C to 125°C. Forward voltage specifications (440 mV @ 2A) are superior to the SSL23 (410 mV @ 2A), indicating lower power dissipation. Reverse leakage current (400 µA @ 30V) is identical. Both parts are Active status and RoHS3 compliant. The primary distinction is packaging format: SL23-E3/52T is supplied in Cut Tape (CT), while SL23-E3/5BT is supplied in Tape & Reel (TR).

The SS23 (Taiwan Semiconductor Corporation) is a direct equivalent manufactured by the same supplier as the SSL23. It maintains identical 30V, 2A ratings, DO-214AA package, and -55°C to 125°C operating range. Forward voltage is 500 mV @ 2A, which is acceptable within typical design margins. Reverse leakage current (400 µA @ 30V) matches the SSL23. This part is Active status and RoHS3 compliant.

Compatible Alternatives (Functional Substitutes with Parameter Variations):

The SK23 (Good-Ark Semiconductor) provides 30V, 2A ratings in DO-214AA package with extended operating temperature range (-55°C to 150°C). Forward voltage is 550 mV @ 2A and reverse leakage is 500 µA @ 30V, both within acceptable substitution tolerances. This part is Active status and RoHS3 compliant.

The B230-13-F (Diodes Incorporated) matches 30V, 2A ratings in DO-214AA, SMB package with extended operating temperature (-65°C to 150°C). Forward voltage is 500 mV @ 2A and reverse leakage is 500 µA @ 30V. This part is Active status and RoHS3 compliant.

Higher Current Alternatives (Uprating Substitutes):

The B330B-13-F (Diodes Incorporated) and SK33B-LTP (Micro Commercial Co) both provide 30V, 3A ratings in DO-214AA package, offering current margin above the 2A requirement. Both are RoHS3 compliant. B330B-13-F is Active status with AEC-Q101 automotive qualification and extended temperature range (-55°C to 150°C). SK33B-LTP is Not For New Designs status with -55°C to 150°C range.

The SK43BL-TP (Micro Commercial Co) provides 30V, 4A rating in DO-214AA package with superior forward voltage (450 mV @ 4A). This part is Not For New Designs status and should not be selected for new applications.

Package Variant (Not Recommended for Direct Substitution):

The B230A-13-F (Diodes Incorporated) uses DO-214AC, SMA package instead of DO-214AA, SMB. While electrical ratings match (30V, 2A), the different package footprint requires PCB layout modification and is not suitable for direct board-level substitution.

Parts Not Recommended for New Designs:

SK13-LTP, SK33B-LTP, and SK43BL-TP are marked as Not For New Designs. These parts should not be selected for new product development or long-term production applications.

Frequently Asked Questions (FAQ)

Q: Can the SSL23 be directly replaced with the SL23-E3/5BT?

A: Yes. The SL23-E3/5BT is a direct functional equivalent. Both parts share identical 30V reverse voltage, 2A current rating, DO-214AA package, and -55°C to 125°C operating temperature range. The SL23-E3/5BT is supplied in Tape & Reel format, matching the SSL23 packaging specification. Forward voltage (440 mV @ 2A) is superior to the SSL23 (410 mV @ 2A), indicating lower power dissipation and improved performance.

Q: What is the difference between SL23-E3/52T and SL23-E3/5BT?

A: Both parts are electrically identical Vishay Schottky diodes with 30V, 2A ratings and DO-214AA package. The primary difference is packaging format: SL23-E3/52T is supplied in Cut Tape (CT), while SL23-E3/5BT is supplied in Tape & Reel (TR). Selection depends on assembly equipment compatibility and production volume requirements.

Q: Can I use the B330B-13-F (3A) instead of the SSL23 (2A)?

A: Yes, the B330B-13-F is a compatible uprating substitute. It maintains the 30V reverse voltage and DO-214AA package while providing 3A current capacity, exceeding the 2A requirement. This substitution is suitable when higher current margin is desired. The B330B-13-F is Active status with AEC-Q101 automotive qualification and extended operating temperature (-55°C to 150°C). Forward voltage is 500 mV @ 3A, which is acceptable within design margins.

Q: Why is the B230A-13-F listed as a substitute if it uses a different package?

A: The B230A-13-F uses DO-214AC, SMA package instead of DO-214AA, SMB. While electrically equivalent (30V, 2A), the different package footprint requires PCB layout modification. This part is listed as a similar alternative but is not recommended for direct board-level substitution without design review and PCB rework.

Q: Are parts marked "Not For New Designs" acceptable for replacement?

A: Parts marked "Not For New Designs" (SK13-LTP, SK33B-LTP, SK43BL-TP) should not be selected for new product development or long-term production applications. These parts may have limited future availability or are being phased out by manufacturers. For new designs, select from parts with Active status: SL23-E3/52T, SL23-E3/5BT, SK23, B230-13-F, B330B-13-F, or SS23.

Q: What is the significance of the forward voltage difference between SSL23 (410 mV) and SK23 (550 mV)?

A: Forward voltage (Vf) determines power dissipation in the diode. The SSL23 at 410 mV @ 2A dissipates less power than the SK23 at 550 mV @ 2A. The 140 mV difference results in approximately 280 mW additional power dissipation at 2A continuous current. For applications with tight thermal budgets or high-frequency switching, the lower forward voltage of the SSL23 or SL23 series is preferred. For general-purpose applications, the SK23 difference is typically acceptable within design margins.

Q: Can I substitute the SSL23 with the SS23 from the same manufacturer?

A: Yes. The SS23 is manufactured by Taiwan Semiconductor Corporation, the same supplier as the SSL23. Both parts share identical 30V, 2A ratings, DO-214AA package, and -55°C to 125°C operating range. The SS23 forward voltage is 500 mV @ 2A compared to the SSL23 at 410 mV @ 2A. Reverse leakage current is identical at 400 µA @ 30V. This substitution is suitable when SSL23 availability is limited and same-manufacturer sourcing is preferred.

Q: What compliance certifications should I verify when selecting a substitute?

A: All listed substitute parts are RoHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), matching the SSL23 specifications. The B330B-13-F additionally carries AEC-Q101 automotive qualification, which is relevant only for automotive applications. For general industrial and consumer applications, RoHS3 compliance and MSL Level 1 are the primary certifications to verify. All parts listed are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Is the extended operating temperature range of SK23 (-55°C to 150°C) beneficial?

A: The extended upper temperature limit of 150°C (compared to SSL23 at 125°C) provides additional thermal margin in high-temperature environments. This is beneficial for applications operating near thermal limits or in elevated ambient conditions. However, for standard industrial applications operating within -55°C to 125°C, the SSL23 and direct equivalents are sufficient. Selection of extended-temperature parts should be based on specific application requirements rather than general preference.

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