Equivalent & Substitute Parts for S2K-LTP

Part Overview

The S2K-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active and complies with ROHS3 and REACH Unaffected standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturer discontinuation, or design flexibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15	V @ 2 A
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	5	µA @ 800 V
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the S2K-LTP are grouped into two categories based on electrical and mechanical compatibility:

Category 1: Direct Parametric Equivalents (Same Current Rating) Parts that maintain identical or superior electrical specifications at the 2 A current rating with matching 800 V reverse voltage, forward voltage characteristics, and DO-214AA package form factor. These parts are interchangeable without circuit redesign.

Category 2: Higher Current Rated Alternatives (5 A Rating) Parts rated for 5 A average rectified current at 800 V reverse voltage. These components operate within the same voltage class and package but provide increased current capacity. Selection of these parts requires verification that the application circuit can accommodate the higher current rating without adverse effects.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 800 V (fixed requirement)
Package / Case: DO-214AA, SMB (mechanical compatibility)
Mounting Type: Surface Mount (assembly compatibility)
RoHS Status: ROHS3 Compliant (regulatory requirement)
Operating Temperature Range: -55°C to 150°C (thermal compatibility)

Parameter Comparison

Parameter	S2K-LTP (Micro Commercial Co)	S2K (Diotec Semiconductor)	S2KH (Taiwan Semiconductor)	S5KB (Taiwan Semiconductor)	S5KB R5G (Taiwan Semiconductor)
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	2 A	2 A	2 A	5 A	5 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	1.15 V @ 2 A	1.15 V @ 2 A	1.1 V @ 5 A	1.1 V @ 5 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	1 µA @ 800 V	10 µA @ 800 V	10 µA @ 800 V
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150°C	-50 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
Product Status	Active	Active	Active	Active	Discontinued at DiGi Electronics
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (2 A Rating):

The S2K (Diotec Semiconductor) and S2KH (Taiwan Semiconductor) are direct parametric equivalents to the S2K-LTP. Both maintain the 2 A current rating, 800 V reverse voltage, and identical forward voltage characteristics. The S2K is suitable for general applications requiring standard recovery characteristics. The S2KH offers automotive-grade qualification (AEC-Q101) with lower reverse leakage current (1 µA versus 5 µA), making it appropriate for automotive and high-reliability applications. Both parts are Active status with ROHS3 compliance.

Higher Current Alternatives (5 A Rating):

The S5KB and S5KB R5G are rated for 5 A average rectified current at 800 V reverse voltage. These parts are suitable only when the application circuit design accommodates the higher current capacity. The S5KB R5G features fast recovery characteristics (≤500ns) compared to standard recovery (>500ns) in other variants, affecting switching performance in high-frequency applications. The S5KB R5G is listed as Discontinued at DiGi Electronics; the S5KB remains Active status.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and surface mount DO-214AA packaging. The S2K-LTP (696 pcs), S2K (3535 pcs), S2KH (6850 pcs), S5KB (3879 pcs), and S5KB R5G (3312 pcs) are available in inventory. Selection should prioritize Active status parts for new designs.

Frequently Asked Questions (FAQ)

Q: Can the S2K-LTP be replaced with the S2K or S2KH without circuit modification?

A: Yes. The S2K (Diotec Semiconductor) and S2KH (Taiwan Semiconductor) are direct parametric equivalents with identical 2 A current rating, 800 V reverse voltage, and 1.15 V forward voltage at 2 A. Both use the same DO-214AA (SMB) surface mount package. No circuit redesign is required for substitution between these three parts.

Q: What is the difference between the S2KH and S2K-LTP?

A: The S2KH is manufactured by Taiwan Semiconductor and includes automotive-grade qualification (AEC-Q101) with lower reverse leakage current (1 µA at 800 V versus 5 µA). The S2KH also specifies reverse recovery time (1.5 µs) and higher capacitance (30 pF at 4 V, 1 MHz). The S2K-LTP is manufactured by Micro Commercial Co. Both parts are electrically compatible for standard applications.

Q: Can the 5 A rated S5KB or S5KB R5G replace the 2 A rated S2K-LTP?

A: The S5KB and S5KB R5G are mechanically compatible (same DO-214AA package) and maintain the 800 V reverse voltage specification. However, these parts are rated for 5 A average rectified current. Substitution requires verification that the application circuit design can accommodate the higher current rating without introducing unintended circuit behavior. These parts are not direct drop-in replacements for 2 A applications.

Q: What is the difference between standard recovery and fast recovery diodes?

A: Recovery speed refers to the time required for the diode to transition from forward conduction to reverse blocking. The S2K-LTP, S2K, and S2KH specify standard recovery (>500ns at >200mA). The S5KB R5G specifies fast recovery (≤500ns at >200mA). Fast recovery diodes are used in high-frequency switching applications to reduce switching losses. Standard recovery diodes are suitable for lower-frequency rectification applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The S2K-LTP, S2K, S2KH, S5KB, and S5KB R5G are all ROHS3 Compliant. All parts are suitable for applications requiring RoHS compliance.

Q: What is the operating temperature range for these diodes?

A: The S2K-LTP, S2KH, S5KB, and S5KB R5G operate from -55°C to 150°C junction temperature. The S2K (Diotec Semiconductor) operates from -50°C to 150°C. For applications requiring the full -55°C lower limit, the S2K-LTP, S2KH, S5KB, or S5KB R5G are appropriate selections.

Q: Why is the S5KB R5G listed as discontinued?

A: The S5KB R5G is marked as Discontinued at DiGi Electronics. This status indicates that the part is no longer actively stocked through this distribution channel. The S5KB (standard recovery variant) remains Active status and is available in inventory. For new designs, the S5KB is the recommended 5 A alternative.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive electronics qualification standard. The S2KH carries this qualification, indicating it meets automotive industry reliability and performance requirements. This qualification is relevant for automotive applications and high-reliability environments where component traceability and quality assurance are critical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message