SK26-LTP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SK26-LTP is a 60V, 2A Schottky rectifier diode manufactured by Micro Commercial Co in DO-214AA (SMB) surface mount package. This component is classified as Active product status and is RoHS3 compliant. Schottky diodes in this voltage and current class are widely used in power supply circuits, reverse polarity protection, and high-frequency rectification applications. Substitute parts are identified based on matching or exceeding the electrical performance parameters while maintaining compatible package form factors and thermal characteristics.

Key Parameters

Parameter	SK26-LTP Value	Unit
Voltage - DC Reverse (Vr) Maximum	60	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) Maximum @ If	700 mV @ 2 A	mV
Speed - Fast Recovery	≤ 500 ns, > 200 mA (Io)	ns
Current - Reverse Leakage @ Vr	1 mA @ 60 V	mA
Capacitance @ Vr, F	50 pF @ 4V, 1MHz	pF
Operating Temperature - Junction	-55°C to 125°C	°C
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SK26-LTP are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitution): Parts that match all critical electrical parameters (60V reverse voltage, 2A average rectified current, fast recovery speed, DO-214AA package) with identical or superior performance characteristics. These parts are suitable for direct replacement without circuit redesign.

Similar Parts (Application-Dependent Substitution): Parts that share the same reverse voltage rating (60V) and fast recovery speed but differ in one or more of the following parameters: average rectified current (1A or 3A), forward voltage drop, reverse leakage current, package form factor (SOD-128 vs. DO-214AA), or operating temperature range. These parts require application-level verification to confirm suitability.

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) Maximum: Must equal or exceed 60V
Current - Average Rectified (Io): Must equal or exceed 2A for direct substitution; lower ratings require circuit analysis
Package / Case: DO-214AA (SMB) preferred for form factor compatibility; SOD-128 requires PCB layout adjustment
Speed: Fast Recovery characteristic (≤ 500 ns, > 200 mA) required for all substitutes
Operating Temperature Range: Must accommodate application thermal requirements
RoHS and Compliance Status: Must maintain ROHS3 compliance

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Tj (Max) [°C]	Substitution Type
SK26-LTP	Micro Commercial Co	60	2	700 @ 2A	1000 @ 60V	DO-214AA (SMB)	125	Main Part
SK26HE3-LTP	Micro Commercial Co	60	2	700 @ 2A	100 @ 60V	DO-214AA (SMB)	125	Parametric Equivalent
B260-13-F	Diodes Incorporated	60	2	700 @ 2A	500 @ 60V	DO-214AA (SMB)	150	Similar
PMEG6020EP,115	Nexperia USA Inc.	60	2	530 @ 2A	150 @ 60V	SOD-128	150	Similar
PMEG6020ETP,115	Nexperia USA Inc.	60	2	530 @ 2A	150 @ 60V	SOD-128	175	Similar
SS25	Taiwan Semiconductor Corporation	50	2	700 @ 2A	400 @ 50V	DO-214AA (SMB)	150	Similar
SS26-E3/52T	Vishay General Semiconductor	60	2	700 @ 2A	400 @ 60V	DO-214AA (SMB)	125	Similar
STPS160U	STMicroelectronics	60	1	670 @ 1A	4 @ 60V	DO-214AA (SMB)	150	Similar
STPS160UY	STMicroelectronics	60	1	670 @ 1A	4 @ 60V	DO-214AA (SMB)	150	Similar
STPS3L60U	STMicroelectronics	60	3	620 @ 3A	150 @ 60V	DO-214AA (SMB)	150	Similar
STPS3L60UY	STMicroelectronics	60	3	620 @ 3A	150 @ 60V	DO-214AA (SMB)	150	Similar

Engineering Selection Recommendations

Parametric Equivalent Selection:

SK26HE3-LTP is the direct parametric equivalent to SK26-LTP. Both parts share identical voltage, current, and package specifications. SK26HE3-LTP features lower reverse leakage current (100 µA vs. 1 mA) and includes AEC-Q101 automotive qualification. Selection of SK26HE3-LTP is appropriate for applications requiring automotive-grade reliability or where lower leakage current provides performance benefits. Both parts maintain ROHS3 compliance and MSL 1 rating.

Similar Part Selection Criteria:

DO-214AA (SMB) Package Compatibility: B260-13-F, SS26-E3/52T, STPS160U, STPS160UY, STPS3L60U, and STPS3L60UY maintain identical package form factor to SK26-LTP, enabling direct PCB footprint compatibility.
Current Rating Considerations:
- STPS160U and STPS160UY: 1A rating. Selection requires confirmation that application current demand does not exceed 1A.
- STPS3L60U and STPS3L60UY: 3A rating. These parts provide current margin above the 2A specification and are suitable for applications with higher current requirements or thermal margin requirements.
Voltage Rating Consideration:
- SS25: 50V maximum reverse voltage. Selection requires confirmation that application reverse voltage stress does not exceed 50V.
Package Form Factor Variation:
- PMEG6020EP,115 and PMEG6020ETP,115: SOD-128 package. These parts require PCB layout modification and are not direct footprint replacements. Selection is appropriate only when PCB redesign is feasible.
Compliance and Qualification:
- STPS160UY and STPS3L60UY: AEC-Q101 automotive qualification. Selection is required for automotive applications.
- All listed parts maintain ROHS3 compliance and MSL 1 rating consistent with SK26-LTP.
Operating Temperature Range:
- PMEG6020ETP,115: 175°C maximum junction temperature. Selection provides thermal margin for high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can SK26HE3-LTP be used as a direct replacement for SK26-LTP?

A: Yes. SK26HE3-LTP is a parametric equivalent with identical voltage (60V), current (2A), and package (DO-214AA) specifications. The lower reverse leakage current (100 µA vs. 1 mA) and AEC-Q101 qualification represent performance improvements. No circuit modification is required.

Q: What is the difference between the STPS160UY and STPS3L60UY?

A: Both parts are STMicroelectronics Schottky diodes with 60V reverse voltage rating and DO-214AA package. STPS160UY is rated for 1A average rectified current, while STPS3L60UY is rated for 3A. STPS3L60UY provides higher current capacity and lower forward voltage drop (620 mV @ 3A vs. 670 mV @ 1A). Selection depends on application current requirements.

Q: Can PMEG6020ETP,115 replace SK26-LTP in the same PCB?

A: No. PMEG6020ETP,115 uses SOD-128 package while SK26-LTP uses DO-214AA (SMB) package. These packages have different footprints and pin configurations. PCB layout modification is required for PMEG6020ETP,115 substitution.

Q: Is SS25 suitable for a 60V application?

A: No. SS25 has a maximum reverse voltage rating of 50V, which is below the 60V specification of SK26-LTP. Use of SS25 in a 60V application exceeds the component rating and is not permitted.

Q: What is the significance of AEC-Q101 qualification?

A: AEC-Q101 is an automotive industry qualification standard. Parts with AEC-Q101 qualification (SK26HE3-LTP, STPS160UY, STPS3L60UY) have undergone additional reliability testing and are approved for automotive applications. Selection of AEC-Q101 qualified parts is required for automotive circuit designs.

Q: How does forward voltage drop affect circuit performance?

A: Forward voltage drop (Vf) determines power dissipation and voltage regulation in rectifier circuits. Lower Vf values reduce heat generation and improve efficiency. PMEG6020 series parts (530 mV @ 2A) and STPS3L60U/UY series (620 mV @ 3A) have lower forward voltage than SK26-LTP (700 mV @ 2A). Selection of lower Vf parts is appropriate for high-efficiency or high-power applications.

Q: What does MSL 1 (Unlimited) mean?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts maintain MSL 1 rating, ensuring consistent handling requirements.

Q: Can STPS3L60U be used in place of SK26-LTP for current margin?

A: Yes. STPS3L60U has identical 60V reverse voltage and DO-214AA package, with higher 3A current rating. The lower forward voltage (620 mV @ 3A) provides efficiency benefits. Selection is appropriate when additional current capacity or thermal margin is desired. No circuit modification is required.

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

A: Cut Tape (CT) and Tape & Reel (TR) refer to supply formats, not component specifications. TR packaging is supplied on continuous tape for automated assembly. CT packaging is supplied in cut tape format. Electrical and mechanical specifications are identical; selection depends on assembly process requirements.

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