SK36 Schottky Rectifier Diode Equivalent & Substitute Parts

Part Overview

The SK36 is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 60 V DC reverse voltage and 3 A average rectified current in a surface mount SMC (DO-214AB) package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for design continuity and procurement planning. The SK36 operates across a junction temperature range of -55°C to 150°C and exhibits fast recovery characteristics suitable for high-frequency switching applications.

Key Parameters

Parameter	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
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	500	µA @ 60 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—

Substitute Part Grouping Explanation

Substitute parts for the SK36 are classified based on electrical and mechanical compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 60 V minimum
Current - Average Rectified (Io): 3 A minimum
Technology: Schottky
Mounting Type: Surface Mount
Package / Case: DO-214AB (SMC) or compatible surface mount package
Operating Temperature - Junction: -55°C to 150°C minimum range

Substitution Categories:

Direct Equivalents (Identical Electrical and Package Specifications): Parts meeting all critical parameters with DO-214AB SMC packaging and 60 V / 3 A ratings.

Functional Equivalents (Same Electrical Performance, Different Package): Parts with 60 V / 3 A ratings in alternative surface mount packages (SMA, DO-214AC) that maintain electrical compatibility.

Higher Current Rated Alternatives (Uprated Current): Parts rated for 5 A at 60 V, providing additional current margin while maintaining voltage and package compatibility.

Lower Voltage Alternatives (Downrated Voltage): Parts rated for 50 V at 3 A, suitable only for applications with reduced voltage requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Package	Product Status	RoHS Status
SK36	Micro Commercial Co	60	3	750 @ 3A	DO-214AB, SMC	Obsolete	Non-compliant
SK36-TP	Micro Commercial Co	60	3	750 @ 3A	DO-214AB, SMC	Obsolete	ROHS3 Compliant
B350-13-F	Diodes Incorporated	50	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant
B360-13-F	Diodes Incorporated	60	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant
B360AM-13-F	Diodes Incorporated	60	3	700 @ 3A	DO-214AC, SMA	Active	ROHS3 Compliant
B360Q-13-F	Diodes Incorporated	60	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant
B560C-13-F	Diodes Incorporated	60	5	700 @ 5A	DO-214AB, SMC	Active	ROHS3 Compliant
B560CQ-13-F	Diodes Incorporated	60	5	700 @ 5A	DO-214AB, SMC	Active	ROHS3 Compliant
CDBC360-G	Comchip Technology	60	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant
CMSH3-60 BK PBFREE	Central Semiconductor Corp	60	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant
CMSH3-60 TR13 PBFREE	Central Semiconductor Corp	60	3	700 @ 3A	DO-214AB, SMC	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation - Direct Replacement:

B360-13-F (Diodes Incorporated) is the preferred direct substitute for SK36. This part maintains identical electrical specifications (60 V, 3 A, DO-214AB SMC package) with active product status and ROHS3 compliance. The forward voltage is reduced to 700 mV at 3 A, providing improved efficiency compared to the original 750 mV specification.

Alternative Direct Replacements:

CDBC360-G (Comchip Technology) and CMSH3-60 series (Central Semiconductor Corp) provide equivalent electrical performance in the same package with active product status and full RoHS compliance.

Automotive-Grade Options:

B360Q-13-F and B560CQ-13-F (Diodes Incorporated) are AEC-Q101 qualified alternatives suitable for automotive applications requiring enhanced reliability and traceability.

Higher Current Margin:

B560C-13-F and B560CQ-13-F provide 5 A current rating at 60 V in the same SMC package, offering additional design margin for applications approaching the 3 A limit.

Package Variant:

B360AM-13-F provides 60 V / 3 A performance in a DO-214AC (SMA) package for applications requiring a smaller footprint, with AEC-Q101 qualification.

Voltage-Downrated Alternative:

B350-13-F is suitable only for applications with maximum reverse voltage requirements of 50 V or less, offering no advantage over 60 V rated parts in standard designs.

Frequently Asked Questions (FAQ)

Q: Can SK36-TP be used as a direct replacement for SK36?

A: Yes. SK36-TP is a direct equivalent from the same manufacturer with identical electrical specifications (60 V, 3 A, 750 mV forward voltage). The primary difference is improved RoHS3 compliance. Both parts are classified as obsolete.

Q: What is the difference between B360-13-F and B360Q-13-F?

A: Both parts have identical electrical specifications (60 V, 3 A, DO-214AB SMC package). B360Q-13-F includes AEC-Q101 automotive qualification and is supplied on tape and reel. B360-13-F is supplied on cut tape and digi-reel. Selection depends on packaging requirements and automotive qualification needs.

Q: Can B360AM-13-F replace SK36 in existing PCB designs?

A: B360AM-13-F has identical electrical specifications but uses a DO-214AC (SMA) package instead of DO-214AB (SMC). This package change requires PCB footprint modification and is not a direct drop-in replacement. Use only if PCB redesign is acceptable.

Q: Why would B560C-13-F be selected over B360-13-F?

A: B560C-13-F is rated for 5 A versus 3 A, providing additional current margin. Both maintain 60 V rating and SMC packaging. Selection depends on whether the application requires higher current capacity or if 3 A is sufficient.

Q: Is B350-13-F a suitable replacement for SK36?

A: B350-13-F is rated for 50 V maximum reverse voltage versus SK36's 60 V rating. This part is suitable only for applications with confirmed maximum reverse voltage requirements of 50 V or less. For standard 60 V designs, use 60 V rated alternatives.

Q: What is the significance of RoHS compliance in substitute selection?

A: SK36 is RoHS non-compliant. All active substitute parts listed are ROHS3 compliant, meeting current environmental and regulatory requirements for new designs and procurement. RoHS compliance is mandatory for most commercial and industrial applications.

Q: Can CMSH3-60 series parts be used interchangeably?

A: CMSH3-60 BK PBFREE and CMSH3-60 TR13 PBFREE have identical electrical specifications. The difference is packaging: bulk versus tape and reel. Selection depends on assembly process requirements and quantity needs.

Q: What is the operating temperature range difference between SK36 and substitutes?

A: SK36 operates from -55°C to 150°C. CMSH3-60 series extends to -65°C minimum. B360AM-13-F and most Diodes Incorporated parts maintain -55°C to 150°C. CDBC360-G specifies 125°C maximum, which is lower than SK36. Verify temperature requirements before selection.

Q: Are there any leakage current differences between SK36 and substitutes?

A: Most substitutes specify 500 µA reverse leakage at 60 V, matching SK36. B360AM-13-F specifies 100 µA at 60 V, providing lower leakage. This difference is beneficial for low-power applications but not critical for standard designs.

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