SK1200-LTP Equivalent & Substitute Parts

Part Overview

The SK1200-LTP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 200V DC reverse voltage and 1A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications within the Schottky diode rectifier category, specifically for applications requiring 200V rated devices in SMB packaging.

Substiute Parts

SK1200-LTP

Micro Commercial CoIn Stock: 1062SK1200-LTP Datasheet

Current PartRFQ

S320

onsemiIn Stock: 1806S320 Datasheet

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STPS2200U

STMicroelectronicsIn Stock: 5190STPS2200U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SK1200-LTP are selected based on the following criteria:

Primary Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V (exact match required)
• Package / Case: DO-214AA, SMB (exact match required)
• Technology: Schottky (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

• Current - Average Rectified (Io): Equal to or greater than 1A
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts may exceed the current rating of the main part while maintaining identical voltage ratings and package specifications. Forward voltage characteristics and reverse leakage current may vary within acceptable ranges for the same voltage class and package type.

Parameter Comparison

Engineering Selection Recommendations

SK1200-LTP (Primary Selection)

The SK1200-LTP is the recommended primary selection for new designs. This part maintains Active product status, ensuring continued availability and manufacturer support. It is RoHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), suitable for standard manufacturing environments.

STPS2200U (Preferred Substitute)

The STPS2200U from STMicroelectronics is the preferred substitute option. This part is classified as Active product status, matching the primary part's lifecycle designation. It provides 2A current capacity, exceeding the 1A requirement of the SK1200-LTP while maintaining identical 200V voltage rating and DO-214AA SMB package specifications. The STPS2200U exhibits lower forward voltage (800 mV @ 2A) and reduced reverse leakage current (5 µA @ 200V) compared to the main part. Operating temperature range extends to 175°C, providing enhanced thermal margin. RoHS3 compliance and MSL 1 rating are maintained.

S320 (Alternative Substitute)

The S320 from onsemi is an alternative substitute with 3A current capacity. However, this part carries Not For New Designs product status, indicating it is not recommended for new circuit development. While it meets all electrical and package requirements with 200V rating and DO-214AA SMB package, its lifecycle status restricts its use to legacy system maintenance or replacement applications only. The S320 provides superior reverse leakage performance (7 µA @ 200V) and extended operating temperature range (-65°C ~ 150°C).

Frequently Asked Questions (FAQ)

Q: Can the S320 be used as a direct replacement for the SK1200-LTP?

A: The S320 meets all electrical and mechanical compatibility requirements, including 200V voltage rating, DO-214AA SMB package, and Schottky technology. However, the S320 carries Not For New Designs product status. For new circuit designs, the STPS2200U is the appropriate substitute. The S320 is suitable only for legacy system maintenance.

Q: What is the significance of the current rating difference between these parts?

A: The SK1200-LTP is rated for 1A average rectified current. Both substitute parts (S320 at 3A and STPS2200U at 2A) exceed this rating. Higher current ratings indicate greater thermal capacity and lower forward voltage drop at equivalent current levels. Substitutes with higher current ratings are electrically compatible and provide design margin for the 1A application.

Q: Are there package compatibility concerns when substituting these parts?

A: All three parts use identical DO-214AA (SMB) surface mount packaging. PCB footprints, solder pad layouts, and mounting procedures are identical. No package-level modifications are required for substitution.

Q: How do forward voltage characteristics affect substitution?

A: The SK1200-LTP specifies 920 mV forward voltage at 1A. The STPS2200U specifies 800 mV at 2A, and the S320 specifies 900 mV at 3A. Lower forward voltage reduces power dissipation in the diode. For 1A operation, the STPS2200U will exhibit lower forward voltage than the main part, improving circuit efficiency. This is a beneficial characteristic for substitution.

Q: What is the importance of reverse leakage current specifications?

A: Reverse leakage current affects circuit performance in high-impedance applications and thermal stability. The SK1200-LTP specifies 50 µA at 200V. Both substitutes exhibit lower leakage: S320 at 7 µA and STPS2200U at 5 µA. Lower reverse leakage improves circuit performance and reduces thermal drift, making these substitutes advantageous.

Q: Are there compliance or certification differences between these parts?

A: All three parts are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. REACH status is Unaffected for all parts. Compliance profiles are identical, with no restrictions on substitution from a regulatory standpoint.

Q: What operating temperature considerations apply to substitution?

A: The SK1200-LTP operates from -50°C to 125°C. The STPS2200U extends this range to -40°C to 175°C, and the S320 to -65°C to 150°C. For applications within the SK1200-LTP temperature range, all substitutes are compatible. For applications requiring extended temperature operation, the STPS2200U or S320 provide additional margin.