SK154-TP Schottky Diode 40V 15A Equivalent & Substitute Parts

Part Overview

The SK154-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 40V 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)	40 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 @ 40 V
Package / Case	DO-214AB, SMC
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky

Substitute Part Grouping Explanation

Substitution of the SK154-TP is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 40 V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Current Rating Consideration: The SK154-TP is rated for 15A average rectified current. Substitute parts are grouped by current capacity. Parts rated at 15A or higher maintain full electrical equivalence. Parts rated below 15A (3A, 5A, 8A) are functional substitutes for applications requiring lower current capacity but cannot be used in circuits demanding the full 15A rating.

Compliance and Status: Active product status substitutes are preferred for long-term availability. RoHS3 compliance status is noted where applicable.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Io (A)	Vf (Max) @ If	Vr (Max)	Package	Product Status	RoHS Status	Tj (°C)
SK154-TP	Micro Commercial Co	15	550 mV @ 15 A	40 V	DO-214AB, SMC	Obsolete	ROHS3 Compliant	-55 ~ 125
5822SMJ/TR13	Microchip Technology	3	500 mV @ 3 A	40 V	DO-214AB, SMC	Active	RoHS non-compliant	-55 ~ 150
B340-13-F	Diodes Incorporated	3	500 mV @ 3 A	40 V	DO-214AB, SMC	Active	ROHS3 Compliant	-55 ~ 125
B540C-13-F	Diodes Incorporated	5	550 mV @ 5 A	40 V	DO-214AB, SMC	Active	ROHS3 Compliant	-55 ~ 150
CDBC540-G	Comchip Technology	5	550 mV @ 5 A	40 V	DO-214AB, SMC	Active	ROHS3 Compliant	-40 ~ 125
HSM840J/TR13	Microchip Technology	8	620 mV @ 8 A	40 V	DO-214AB, SMC	Active	RoHS non-compliant	-55 ~ 175
LSM340J/TR13	Microchip Technology	3	520 mV @ 3 A	40 V	DO-214AB, SMC	Active	RoHS non-compliant	-55 ~ 150
LSM540J/TR13	Microchip Technology	5	520 mV @ 5 A	40 V	DO-214AB, SMC	Active	RoHS non-compliant	-55 ~ 150
LSM840J/TR13	Microchip Technology	8	520 mV @ 8 A	40 V	DO-214AB, SMC	Active	RoHS non-compliant	-55 ~ 150
MBRS340T3G	onsemi	3	500 mV @ 3 A	40 V	DO-214AB, SMC	Active	ROHS3 Compliant	-65 ~ 150
MBRS540T3G	onsemi	5	500 mV @ 5 A	40 V	DO-214AB, SMC	Active	ROHS3 Compliant	-65 ~ 150

Engineering Selection Recommendations

For Full 15A Current Capacity: No active substitute parts are available with 15A or higher current rating in the provided dataset. The SK154-TP remains the only part specified for this current level. Alternative sourcing strategies or design modifications may be required for applications requiring the full 15A rating.

For Reduced Current Applications (≤ 8A): The following active parts provide functional substitution with matching 40V reverse voltage and DO-214AB package:

RoHS3 Compliant Options (Preferred for regulatory compliance):

B340-13-F (Diodes Incorporated, 3A) - Active status, ROHS3 compliant, operating range -55°C to 125°C
B540C-13-F (Diodes Incorporated, 5A) - Active status, ROHS3 compliant, extended operating range to 150°C
CDBC540-G (Comchip Technology, 5A) - Active status, ROHS3 compliant, operating range -40°C to 125°C
MBRS340T3G (onsemi, 3A) - Active status, ROHS3 compliant, extended temperature range -65°C to 150°C
MBRS540T3G (onsemi, 5A) - Active status, ROHS3 compliant, extended temperature range -65°C to 150°C

RoHS Non-Compliant Options (Legacy applications):

LSM340J/TR13 (Microchip Technology, 3A) - Active status, extended operating range to 150°C
LSM540J/TR13 (Microchip Technology, 5A) - Active status, extended operating range to 150°C
LSM840J/TR13 (Microchip Technology, 8A) - Active status, extended operating range to 150°C
HSM840J/TR13 (Microchip Technology, 8A) - Active status, extended operating range to 175°C
5822SMJ/TR13 (Microchip Technology, 3A) - Active status, extended operating range to 150°C

Selection Criteria: Choose substitutes based on actual circuit current requirements. If the application requires less than 15A, select the lowest rated part that meets the current demand. For new designs or products requiring regulatory compliance, prioritize RoHS3 compliant options. For applications requiring extended temperature operation beyond 125°C, select parts with operating ranges extending to 150°C or higher.

Frequently Asked Questions (FAQ)

Q: Can I use a 3A or 5A rated diode in place of the 15A SK154-TP?

A: Only if your circuit current requirement is below the substitute part's rating. A 3A part cannot safely conduct 15A. Verify actual circuit current demand before substitution. Using an undersized diode results in excessive heat generation and component failure.

Q: What is the difference between DO-214AB and SMC package designations?

A: DO-214AB and SMC refer to the same physical package. Both designations are used interchangeably in the industry. All substitute parts listed use this identical package, ensuring mechanical and thermal compatibility.

Q: Are RoHS3 compliant parts required for my application?

A: RoHS3 compliance is mandatory for products sold in the European Union and many other regulated markets. If your product is subject to RoHS regulations, select only ROHS3 compliant substitutes. For legacy or non-regulated applications, RoHS non-compliant parts are functionally equivalent.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean?

A: This specifies the diode's switching speed. All listed substitute parts meet this specification, indicating they switch from conducting to blocking state within 500 nanoseconds at currents exceeding 200mA. This parameter is critical for high-frequency rectification applications.

Q: Can I use a part with lower reverse leakage current than the SK154-TP?

A: Yes. Lower reverse leakage current is a beneficial characteristic. Parts with reverse leakage specifications lower than 1 mA @ 40V provide improved performance in low-current or high-impedance circuits.

Q: What is the significance of forward voltage (Vf) differences between parts?

A: Forward voltage affects power dissipation and heat generation. The SK154-TP specifies 550 mV @ 15A. Substitute parts with lower Vf (such as 500 mV or 520 mV) generate less heat at equivalent current levels. This is advantageous for thermal management but requires circuit analysis to confirm compatibility.

Q: Are Tape & Reel (TR) packaged parts compatible with Cut Tape (CT) & Digi-Reel® packaged parts?

A: Both packaging formats contain identical components in the same DO-214AB package. The difference is in supply format: Tape & Reel is for high-volume automated assembly, while Cut Tape & Digi-Reel is for lower-volume or mixed-component applications. Component performance is identical.

Q: Why do some substitutes have extended operating temperature ranges?

A: Extended temperature ranges (such as -55°C to 150°C versus -55°C to 125°C) indicate the component maintains specified electrical characteristics across a wider temperature band. This is beneficial for applications in extreme environments but not required for standard industrial temperature ranges.

Q: Can I substitute a part with higher current rating than required?

A: Yes. A higher-rated part operates safely at lower currents. However, this may result in unnecessary cost and board space usage. Select the lowest rated part that meets or exceeds your circuit requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message