SK153-TP Equivalent & Substitute Parts

Part Overview

The SK153-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 30V DC reverse voltage and 15A average rectified current in a DO-214AB (SMC) surface mount package. This component is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	15 A
Voltage - Forward (Vf) (Max) @ If	550 mV @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 mA @ 30 V
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the SK153-TP is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Current Rating Consideration: The SK153-TP is rated for 15A average rectified current. Substitute parts are grouped into three categories based on current capacity:

Lower Current Substitutes (3A - 5A): Parts with reduced current ratings suitable for applications where full 15A capacity is not required. These include 5821SMJ/TR13 (3A), B330-13-F (3A), MBRS330T3G (3A), SK33/TR13 (3A), and SS33 (3A). The B530C-13-F provides 5A capacity.
Mid-Range Current Substitute (8A): The HSM830J/TR13 rated for 8A provides intermediate current capacity between lower-rated and full-rated options.
Full Current Equivalent: No substitute part in the provided list matches the full 15A rating of the SK153-TP.

All substitute parts maintain the 30V reverse voltage rating, DO-214AB package format, and fast recovery Schottky technology required for direct functional replacement within their respective current ratings.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf (Max) @ If	Package	Tj (°C)	Product Status	RoHS Status
SK153-TP	Micro Commercial Co	30 V	15	550 mV @ 15 A	DO-214AB, SMC	-55 ~ 125	Obsolete	ROHS3 Compliant
5821SMJ/TR13	Microchip Technology	30 V	3	480 mV @ 3 A	DO-214AB, SMC	-55 ~ 150	Active	RoHS non-compliant
B330-13-F	Diodes Incorporated	30 V	3	500 mV @ 3 A	DO-214AB, SMC	-55 ~ 125	Active	ROHS3 Compliant
B530C-13-F	Diodes Incorporated	30 V	5	550 mV @ 5 A	DO-214AB, SMC	-55 ~ 150	Active	ROHS3 Compliant
HSM830J/TR13	Microchip Technology	30 V	8	620 mV @ 8 A	DO-214AB, SMC	-55 ~ 175	Active	RoHS non-compliant
MBRS330T3G	onsemi	30 V	3	500 mV @ 3 A	DO-214AB, SMC	-65 ~ 150	Active	ROHS3 Compliant
SK33/TR13	Microsemi Corporation	30 V	3	500 mV @ 3 A	DO-214AB, SMC	-55 ~ 125	Active	RoHS non-compliant
SS33	Fairchild Semiconductor	30 V	3	500 mV @ 3 A	DO-214AB, SMC	-55 ~ 150	Active	Not specified

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: Select from B330-13-F, B530C-13-F, or MBRS330T3G. These parts maintain ROHS3 compliance matching the original SK153-TP specification. B330-13-F and MBRS330T3G are suitable for 3A applications, while B530C-13-F accommodates 5A requirements.

For Active Product Status: All substitute parts listed carry active product status, ensuring ongoing availability and manufacturing support. The SK153-TP obsolete status necessitates transition to one of these active alternatives.

For Extended Temperature Range: HSM830J/TR13 provides the widest operating temperature range (-55°C to 175°C) and highest current capacity (8A) among available substitutes. B530C-13-F extends to 150°C with 5A capacity. Both options exceed the original -55°C to 125°C range.

For Current Capacity Matching: No substitute part achieves the full 15A rating of SK153-TP. Applications requiring 15A capacity must evaluate alternative component families or parallel configurations. For reduced-current applications, B530C-13-F (5A) provides the closest capacity match while maintaining RoHS3 compliance and active status.

For Packaging and Mounting Compatibility: All substitute parts maintain DO-214AB (SMC) surface mount package format, ensuring PCB layout and assembly process compatibility with original SK153-TP designs.

Frequently Asked Questions (FAQ)

Q: Can the SK153-TP be directly replaced with a lower-current rated substitute?

A: Direct replacement depends on circuit current requirements. If the application draws less than 3A, parts such as B330-13-F, MBRS330T3G, or SK33/TR13 are functionally compatible. If current demand ranges from 3A to 5A, B530C-13-F is suitable. If current demand ranges from 5A to 8A, HSM830J/TR13 is appropriate. Applications requiring the full 15A capacity cannot use any listed substitute and require alternative component selection.

Q: Are all substitute parts compatible with existing PCB layouts designed for SK153-TP?

A: Yes. All substitute parts use the DO-214AB (SMC) surface mount package, maintaining identical footprint and mounting characteristics. No PCB redesign is required for package compatibility.

Q: What is the impact of forward voltage differences between SK153-TP and substitute parts?

A: Forward voltage variations exist across substitutes. SK153-TP specifies 550 mV @ 15A. Lower-current substitutes (3A) range from 480 mV to 500 mV, while the 5A part (B530C-13-F) matches at 550 mV, and the 8A part (HSM830J/TR13) is higher at 620 mV. Circuit designs with tight voltage margin specifications must account for these differences in power dissipation and thermal management calculations.

Q: Which substitute offers the best compliance profile?

A: B330-13-F, B530C-13-F, and MBRS330T3G all maintain ROHS3 compliance matching the original SK153-TP. B330-13-F and MBRS330T3G are rated for 3A, while B530C-13-F accommodates 5A. All three carry active product status.

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

A: Cut Tape packaging is supplied in individual strips suitable for manual assembly or small-volume production. Tape & Reel packaging is supplied on continuous reels for automated pick-and-place assembly equipment. Both formats contain identical components; packaging selection depends on assembly process requirements and volume.

Q: Can RoHS non-compliant substitutes be used in RoHS3-regulated applications?

A: No. Applications subject to RoHS3 regulations require components with ROHS3 compliance certification. Parts such as 5821SMJ/TR13, HSM830J/TR13, SK33/TR13, and SS33 are RoHS non-compliant and cannot be used in regulated environments. Select only B330-13-F, B530C-13-F, or MBRS330T3G for RoHS3-mandated applications.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects power dissipation and circuit performance at maximum reverse voltage. SK153-TP specifies 1 mA @ 30V. Substitutes range from 250 µA to 2 mA. Lower leakage (250 µA in HSM830J/TR13) reduces standby power consumption, while higher leakage (2 mA in MBRS330T3G) increases power dissipation. Circuit designs sensitive to leakage current must verify compatibility with the selected substitute.

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