SK36B-TP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SK36B-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 60V DC reverse voltage and 3A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives within acceptable parameter tolerances for the Schottky diode category.

Key Parameters

Parameter	SK36B-TP Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 3 A	mV
Current - Reverse Leakage @ Vr	500	µA @ 60 V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Mounting Type	Surface Mount	-
Package / Case	DO-214AA, SMB	-
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the SK36B-TP is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 60V minimum
Current - Average Rectified (Io): 3A minimum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AA or compatible SMB/SMA variants

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may operate at lower forward voltage (improved efficiency)
Current - Reverse Leakage @ Vr: Substitute parts may exhibit lower leakage (improved performance)
Capacitance @ Vr, F: Variation acceptable within application requirements
Operating Temperature - Junction: Substitute parts may support extended temperature ranges

Substitute parts are grouped into two categories: direct equivalents (identical base product number, different packaging) and functional alternatives (different manufacturers, equivalent electrical performance within specified tolerances).

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 3A [mV]	Ir @ Vr [µA]	Package	Temp Range [°C]	Product Status
SK36B-TP	Micro Commercial Co	60	3	750	500 @ 60V	DO-214AA, SMB	-55 to 125	Obsolete
SK36B-LTP	Micro Commercial Co	60	3	750	500 @ 60V	DO-214AA, SMB	-55 to 150	Active
B360B-13-F	Diodes Incorporated	60	3	700	500 @ 60V	DO-214AA, SMB	-55 to 150	Active
B350B-13-F	Diodes Incorporated	50	3	700	500 @ 50V	DO-214AA, SMB	-55 to 150	Active
MBRS360BT3G	onsemi	60	3	630	30 @ 60V	DO-214AA, SMB	-65 to 175	Active
SS36	MDD	60	3	-	500 @ 60V	DO-214AC, SMA	-55 to 150	Active
STPS3L60U	STMicroelectronics	60	3	620	150 @ 60V	DO-214AA, SMB	-55 to 150	Active
STPS3L60UY	STMicroelectronics	60	3	620	150 @ 60V	DO-214AA, SMB	-40 to 150	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Substitute):

SK36B-LTP (Micro Commercial Co) is the direct equivalent to SK36B-TP. This part maintains identical electrical specifications (60V, 3A, 750mV forward voltage) and package configuration (DO-214AA, SMB). The primary distinction is product status: SK36B-LTP is active with extended temperature range (-55°C to 150°C versus -55°C to 125°C). This part is ROHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), matching the original specification.

Functional Alternatives (60V Rating):

B360B-13-F (Diodes Incorporated) and STPS3L60UY (STMicroelectronics) provide 60V rated alternatives with improved forward voltage characteristics (700mV and 620mV respectively at 3A). Both are active products in DO-214AA SMB packages with extended temperature ranges. B360B-13-F carries AEC-Q101 automotive qualification. STPS3L60UY includes automotive grade designation with AEC-Q101 qualification and operates across -40°C to 150°C.

MBRS360BT3G (onsemi) offers 60V rating with superior forward voltage (630mV) and significantly reduced reverse leakage current (30µA versus 500µA). This part supports extended temperature range (-65°C to 175°C) and is active with AEC-Q101 automotive qualification.

Functional Alternative (50V Rating):

B350B-13-F (Diodes Incorporated) provides a 50V rated alternative suitable for applications where 60V reverse voltage rating is not required. This part maintains 3A current rating and improved forward voltage (700mV). It is active, ROHS3 compliant, and operates across -55°C to 150°C.

Package Variant:

SS36 (MDD) is a 60V, 3A Schottky diode in DO-214AC SMA package. This represents a different physical package form factor (SMA versus SMB) and is suitable only for designs accommodating SMA footprints. The part is active and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can SK36B-LTP directly replace SK36B-TP without circuit modification?

A: Yes. SK36B-LTP is a direct equivalent with identical electrical specifications (60V, 3A, 750mV forward voltage) and DO-214AA SMB package. The extended temperature range (-55°C to 150°C) provides additional operational margin. No circuit modification is required.

Q: What is the difference between B360B-13-F and STPS3L60UY?

A: Both parts are 60V, 3A Schottky diodes in DO-214AA SMB packages with active product status. B360B-13-F (Diodes Incorporated) operates at 700mV forward voltage with 500µA reverse leakage. STPS3L60UY (STMicroelectronics) operates at 620mV forward voltage with 150µA reverse leakage, providing improved efficiency and lower leakage. STPS3L60UY includes automotive grade and AEC-Q101 qualification.

Q: Is B350B-13-F suitable as a substitute for SK36B-TP?

A: B350B-13-F is a functional alternative only for applications where 50V reverse voltage rating is sufficient. This part is not suitable for circuits requiring 60V reverse voltage capability. Both parts maintain 3A current rating and DO-214AA SMB package compatibility.

Q: What are the package differences between SMB and SMA variants?

A: SMB (DO-214AA) and SMA (DO-214AC) are distinct surface mount package form factors. SS36 (SMA package) is physically different from SK36B-TP (SMB package) and requires different PCB footprints. Substitution is possible only if the circuit board design accommodates the SMA footprint.

Q: Does MBRS360BT3G offer advantages over other 60V alternatives?

A: MBRS360BT3G provides superior forward voltage performance (630mV at 3A) and significantly reduced reverse leakage current (30µA versus 500µA at 60V). This part supports extended temperature range (-65°C to 175°C) and includes AEC-Q101 automotive qualification. These characteristics make it suitable for applications requiring improved efficiency and thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (SK36B-LTP, B360B-13-F, B350B-13-F, MBRS360BT3G, SS36, STPS3L60U, STPS3L60UY) are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

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

A: AEC-Q101 is an automotive electronics qualification standard. Parts carrying this qualification (B360B-13-F, STPS3L60UY, MBRS360BT3G) have undergone rigorous testing for automotive applications. This qualification is relevant only for designs requiring automotive-grade components.

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