SK23-LTP Schottky Diode 30V 2A Equivalent & Substitute Parts

Part Overview

The SK23-LTP is a Schottky rectifier diode rated for 30V DC reverse voltage and 2A average rectified current in a DO-214AA (SMB) surface mount package. Manufactured by Micro Commercial Co, this component is classified as Not For New Designs, indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing production requirements with active alternatives from current manufacturers.

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
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	2 mA @ 30 V
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SK23-LTP is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30 V (exact match required)
Current - Average Rectified (Io): 2 A (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)
Technology: Schottky (exact match required)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 500 mV @ 2 A or lower (lower values acceptable)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Operating Temperature - Junction: -55°C ~ 125°C minimum (wider ranges acceptable)
RoHS Status: ROHS3 Compliant (required)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (required)

Parts that meet all primary criteria and secondary compatibility parameters are classified as direct substitutes. Parts with higher current ratings (3A) are listed as upgrades suitable for applications requiring increased current capacity. Parts with different package types (SOD-128) or lower current ratings (1A) are identified separately due to package incompatibility or reduced current capability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Tj (Operating)	Product Status	Reverse Leakage @ Vr
SK23-LTP	Micro Commercial Co	30 V	2 A	500 mV @ 2 A	DO-214AA, SMB	-55°C ~ 125°C	Not For New Designs	2 mA @ 30 V
B230-13-F	Diodes Incorporated	30 V	2 A	500 mV @ 2 A	DO-214AA, SMB	-65°C ~ 150°C	Active	500 µA @ 30 V
B330B-13-F	Diodes Incorporated	30 V	3 A	500 mV @ 3 A	DO-214AA, SMB	-55°C ~ 150°C	Active	500 µA @ 30 V
MBRS130LT3G	onsemi	30 V	2 A	445 mV @ 2 A	DO-214AA, SMB	-65°C ~ 125°C	Active	1 mA @ 30 V
MBRS130T3G	onsemi	30 V	1 A	600 mV @ 1 A	DO-214AA, SMB	-65°C ~ 125°C	Active	1 mA @ 30 V
PMEG3020CEP,115	NXP Semiconductors	30 V	2 A	420 mV @ 2 A	SOD-128	-55°C ~ 150°C	Active	1.5 mA @ 30 V
SL23-E3/52T	Vishay General Semiconductor - Diodes Division	30 V	2 A	440 mV @ 2 A	DO-214AA, SMB	-55°C ~ 125°C	Active	400 µA @ 30 V
SL23-E3/5BT	Vishay General Semiconductor - Diodes Division	30 V	2 A	440 mV @ 2 A	DO-214AA, SMB	-55°C ~ 125°C	Active	400 µA @ 30 V
SS23	Taiwan Semiconductor Corporation	30 V	2 A	500 mV @ 2 A	DO-214AA, SMB	-55°C ~ 125°C	Active	400 µA @ 30 V
STPS130U	STMicroelectronics	30 V	1 A	550 mV @ 1 A	DO-214AA, SMB	-55°C ~ 150°C	Active	10 µA @ 30 V

Engineering Selection Recommendations

Direct Substitutes (30V, 2A, DO-214AA/SMB Package):

The following parts are direct functional equivalents to the SK23-LTP and are suitable for one-to-one replacement in existing designs:

B230-13-F (Diodes Incorporated): Active product status with extended operating temperature range (-65°C ~ 150°C). Forward voltage matches specification at 500 mV @ 2 A. ROHS3 compliant.
MBRS130LT3G (onsemi): Active product status with improved forward voltage performance (445 mV @ 2 A), reducing power dissipation. Operating temperature range -65°C ~ 125°C. ROHS3 compliant.
SL23-E3/52T and SL23-E3/5BT (Vishay General Semiconductor - Diodes Division): Active products with identical voltage and current ratings. Forward voltage 440 mV @ 2 A provides improved efficiency. Both ROHS3 compliant. SL23-E3/5BT is supplied in Tape & Reel packaging, matching the original SK23-LTP packaging format.
SS23 (Taiwan Semiconductor Corporation): Active product status with matching electrical specifications. Forward voltage 500 mV @ 2 A. Supplied in Tape & Reel packaging. ROHS3 compliant.

Upgrade Option (30V, 3A, DO-214AA/SMB Package):

B330B-13-F (Diodes Incorporated): Active product with increased current rating (3A) suitable for applications requiring higher current capacity. Maintains 30V reverse voltage rating and DO-214AA/SMB package compatibility. Includes AEC-Q101 automotive qualification. ROHS3 compliant.

Alternative Package (30V, 2A, SOD-128 Package):

PMEG3020CEP,115 (NXP Semiconductors): Active product with identical voltage and current ratings but different package type (SOD-128/CFP5). Forward voltage 420 mV @ 2 A provides superior efficiency. Requires PCB layout modification due to package change. ROHS3 compliant.

Not Recommended for Direct Substitution:

MBRS130T3G and STPS130U: Current rating of 1A is insufficient for 2A applications and represents a downgrade in capability.

Frequently Asked Questions (FAQ)

Q: Can B230-13-F replace SK23-LTP in my existing design?

A: Yes. B230-13-F is a direct substitute with identical voltage (30V), current (2A), and package (DO-214AA/SMB) specifications. It is an active product from Diodes Incorporated and is ROHS3 compliant. The extended operating temperature range (-65°C ~ 150°C) provides additional margin compared to the original part.

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

A: Both parts are electrically identical with 30V, 2A ratings and DO-214AA/SMB packaging. 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), matching the original SK23-LTP packaging format.

Q: Why is MBRS130LT3G listed as a substitute if it has lower forward voltage?

A: MBRS130LT3G meets all primary substitution criteria: 30V reverse voltage, 2A current rating, and DO-214AA/SMB package. The lower forward voltage (445 mV @ 2 A versus 500 mV @ 2 A) is a beneficial characteristic that reduces power dissipation and heat generation, making it a superior electrical choice while maintaining full functional compatibility.

Q: Can I use B330B-13-F as a drop-in replacement?

A: B330B-13-F is mechanically and electrically compatible as a drop-in replacement due to identical package type (DO-214AA/SMB). However, it is rated for 3A instead of 2A. This higher current rating does not create compatibility issues in 2A applications; the part will operate within its safe operating region. The upgrade is suitable for applications where future current requirements may increase.

Q: Why is PMEG3020CEP,115 listed separately?

A: PMEG3020CEP,115 has different packaging (SOD-128/CFP5 instead of DO-214AA/SMB). While electrically equivalent at 30V and 2A, the different package requires PCB layout modification and cannot be used as a direct drop-in replacement without redesign.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the compliance status of the original SK23-LTP.

Q: What does "Not For New Designs" mean for the SK23-LTP?

A: This designation indicates the SK23-LTP has reached end-of-life status and is no longer recommended for new product designs. Existing inventory may be available, but long-term supply is not guaranteed. Using an active substitute part ensures design continuity and supply chain reliability.

Q: Can MBRS130T3G or STPS130U be used in place of SK23-LTP?

A: No. Both parts are rated for 1A current, which is insufficient for the 2A requirement of the SK23-LTP. Using an undersized component would result in exceeding the device's maximum current rating and cause premature failure or thermal damage.

Q: What is the significance of the reverse leakage current difference between SK23-LTP and substitute parts?

A: The SK23-LTP specifies 2 mA @ 30 V reverse leakage, while most substitutes specify 500 µA to 1.5 mA. Lower reverse leakage current is a beneficial characteristic that reduces standby power consumption. The differences are within acceptable ranges for typical rectifier applications and do not indicate incompatibility.

Q: Is automotive qualification required for my application?

A: B330B-13-F includes AEC-Q101 automotive qualification, making it suitable for automotive and high-reliability applications. Other substitutes are suitable for general industrial and consumer applications. Verify your application requirements before selecting a part.

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