SK1010-TP Schottky Diode Equivalent & Substitute Parts

Part Overview

The SK1010-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 100V DC reverse voltage and 10A average rectified current in a DO-214AB (SMC) surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The SK1010-TP operates across a junction temperature range of -55°C to 125°C and exhibits fast recovery characteristics suitable for high-frequency rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	10	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 10 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	1	mA @ 100 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SK1010-TP is determined by the following critical parameters: DC reverse voltage rating (100V), average rectified current capacity, forward voltage drop characteristics, fast recovery speed classification, surface mount packaging (DO-214AB/SMC), and operating temperature range. Substitute parts must maintain electrical compatibility within these specifications.

The SK1010-TP operates at 10A current capacity. Substitute parts are grouped into three categories based on current rating:

Lower Current Substitutes (3A rating): B3100-13-F, HSM3100J/TR13, MBRS3100T3G, and S310 are rated for 3A average rectified current. These parts share the 100V reverse voltage rating, DO-214AB/SMC package, fast recovery speed, and -55°C to 125°C (or extended) operating temperature range. These substitutes are suitable for applications where the circuit current requirement does not exceed 3A.

Mid-Range Current Substitutes (5A rating): CDBC5100-G and HSM5100J/TR13 are rated for 5A average rectified current. Both maintain 100V reverse voltage, DO-214AB/SMC packaging, fast recovery characteristics, and compatible operating temperatures. These substitutes accommodate circuits requiring 5A capacity.

Higher Current Substitute (8A rating): HSM8100J/TR13 is rated for 8A average rectified current, providing the closest current capacity to the original 10A specification while maintaining all other critical parameters: 100V reverse voltage, DO-214AB/SMC package, fast recovery speed, and -55°C to 175°C operating temperature range.

All substitute parts are Schottky technology diodes with surface mount configuration and comply with RoHS3 requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [mV]	Speed	Package	Tj Range [°C]	Product Status	RoHS Status
SK1010-TP	Micro Commercial Co	100	10	850 @ 10A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 125	Obsolete	ROHS3 Compliant
B3100-13-F	Diodes Incorporated	100	3	790 @ 3A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 125	Active	ROHS3 Compliant
CDBC5100-G	Comchip Technology	100	5	850 @ 5A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 125	Active	ROHS3 Compliant
HSM3100J/TR13	Microchip Technology	100	3	810 @ 3A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 175	Active	RoHS non-compliant
HSM5100J/TR13	Microchip Technology	100	5	800 @ 5A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 175	Active	RoHS non-compliant
HSM8100J/TR13	Microchip Technology	100	8	780 @ 8A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 175	Active	RoHS non-compliant
MBRS3100T3G	onsemi	100	3	790 @ 3A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-65 to 175	Active	ROHS3 Compliant
S310	Fairchild Semiconductor	100	3	850 @ 3A	Fast Recovery ≤ 500ns	DO-214AB, SMC	-55 to 150	Active	Not specified
SK310/TR13	Microsemi Corporation	100	3	Not specified	Not specified	SMCJ	Not specified	Active	RoHS non-compliant

Engineering Selection Recommendations

For Direct Current Capacity Replacement: HSM8100J/TR13 provides the closest electrical match to the SK1010-TP with 8A current rating, maintaining 100V reverse voltage and fast recovery characteristics. This part is manufactured by Microchip Technology and carries active product status. However, HSM8100J/TR13 is RoHS non-compliant, which may impact procurement for regulated applications.

For RoHS3 Compliant Designs: CDBC5100-G (Comchip Technology, 5A) or B3100-13-F (Diodes Incorporated, 3A) are suitable alternatives. Both maintain ROHS3 compliance, active product status, and identical 100V reverse voltage with DO-214AB/SMC packaging. CDBC5100-G provides higher current capacity at 5A, while B3100-13-F operates at 3A.

For Extended Temperature Range: HSM8100J/TR13, HSM5100J/TR13, and MBRS3100T3G support operating temperatures to 175°C, exceeding the original SK1010-TP specification of 125°C maximum. MBRS3100T3G additionally provides the widest temperature range (-65°C to 175°C) and maintains ROHS3 compliance.

For General Purpose Substitution: MBRS3100T3G (onsemi, 3A) combines ROHS3 compliance, active status, extended temperature range, and lowest reverse leakage current (50 µA @ 100V), making it suitable for applications where the 3A current rating is acceptable.

Selection should prioritize current capacity requirements of the target application, compliance certifications, and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SK1010-TP be directly replaced with a lower current rated substitute such as B3100-13-F or S310?

A: Direct replacement depends on circuit current requirements. B3100-13-F and S310 are rated for 3A average rectified current, compared to the SK1010-TP's 10A rating. These substitutes are suitable only if the application circuit operates at or below 3A. Exceeding the rated current of the substitute part will result in thermal stress and potential failure.

Q: What is the difference between HSM8100J/TR13 and CDBC5100-G for substitution purposes?

A: HSM8100J/TR13 (Microchip Technology) is rated for 8A current capacity with an operating temperature range of -55°C to 175°C but is RoHS non-compliant. CDBC5100-G (Comchip Technology) is rated for 5A current capacity with a maximum junction temperature of 125°C and maintains ROHS3 compliance. HSM8100J/TR13 provides higher current capacity and extended temperature range, while CDBC5100-G is suitable for RoHS-regulated applications.

Q: Are all substitute parts available in the same DO-214AB/SMC package?

A: All listed substitute parts utilize the DO-214AB or SMC package designation, ensuring mechanical and thermal compatibility with the original SK1010-TP footprint. SK310/TR13 is designated as SMCJ package, which is equivalent to DO-214AB/SMC for surface mount applications.

Q: What is the significance of forward voltage drop differences among substitutes?

A: Forward voltage drop (Vf) varies among substitutes due to manufacturing differences and current rating variations. The SK1010-TP specifies 850 mV @ 10A. Substitutes such as HSM8100J/TR13 (780 mV @ 8A) and HSM5100J/TR13 (800 mV @ 5A) exhibit lower forward voltage drops at their respective current ratings. Lower forward voltage reduces power dissipation and heat generation in the circuit. Selection should account for the specific current operating point of the application.

Q: Why is reverse leakage current specified differently across substitute parts?

A: Reverse leakage current (Ir) is a manufacturing parameter that varies by semiconductor process and die design. The SK1010-TP specifies 1 mA @ 100V, while substitutes range from 50 µA to 500 µA @ 100V. Lower reverse leakage current indicates better diode quality and reduced standby power consumption. This parameter becomes significant in low-power or precision applications where leakage current contributes to overall system power budget.

Q: Can HSM3100J/TR13 or HSM5100J/TR13 be used in applications requiring RoHS compliance?

A: HSM3100J/TR13 and HSM5100J/TR13 are both RoHS non-compliant. These parts cannot be used in applications or supply chains requiring RoHS3 certification. For RoHS-compliant substitution, select B3100-13-F, CDBC5100-G, MBRS3100T3G, or S310.

Q: What is the impact of operating temperature range differences on part selection?

A: The SK1010-TP operates from -55°C to 125°C. Substitutes such as HSM8100J/TR13, HSM5100J/TR13, and MBRS3100T3G extend the upper temperature limit to 175°C. If the application operates within the original -55°C to 125°C range, all substitutes are compatible. If the application requires operation above 125°C, only the extended-range substitutes are suitable.

Q: Is packaging compatibility guaranteed across all substitute parts?

A: All substitute parts are specified for DO-214AB or SMC package designation, which are mechanically and thermally equivalent for surface mount applications. PCB footprints designed for the SK1010-TP will accommodate all listed substitutes without modification. Verify supplier device package designation during procurement to confirm exact package format.

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