SFT15G Equivalent & Substitute Parts

Part Overview

The SFT15G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 300 V DC reverse voltage and 1 A average rectified current. The device features fast recovery characteristics with a reverse recovery time of 35 ns and is housed in a T-18 axial through-hole package. The SFT15G maintains active product status and is ROHS3 compliant, making it suitable for standard industrial and commercial applications requiring reliable rectification at moderate voltage and current levels.

Identifying equivalent and substitute parts is necessary when addressing inventory constraints, supply chain disruptions, or application-specific requirements such as automotive-grade qualification or enhanced reliability specifications.

Substiute Parts

SFT15G

Taiwan Semiconductor CorporationIn Stock: 6156SFT15G Datasheet

Current PartRFQ

SFT15G

Taiwan Semiconductor CorporationIn Stock: 6156SFT15G Datasheet

DirectRFQ

SFT15GH

Taiwan Semiconductor CorporationIn Stock: 6084SFT15GH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFT15G are determined by electrical and mechanical parameter equivalence within the rectifier diode category. The substitution logic is based on the following critical parameters:

Electrical Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 300 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
• Reverse Recovery Time (trr): 35 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 300 V
• Capacitance @ Vr, F: 10 pF @ 4V, 1MHz

Mechanical Equivalence Criteria:

• Package / Case: T-18, Axial
• Mounting Type: Through Hole
• Supplier Device Package: TS-1

Parts meeting all electrical and mechanical parameters are classified as direct parametric equivalents. Parts with identical specifications but enhanced qualification or grade designations are classified as parametric equivalents with extended application scope.

Parameter Comparison

Engineering Selection Recommendations

SFT15G Selection: The SFT15G is appropriate for general-purpose rectification applications in industrial and commercial environments. The part maintains active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring broad applicability and regulatory alignment for standard applications.

SFT15GH Selection: The SFT15GH is the parametric equivalent of the SFT15G with automotive-grade designation and AEC-Q101 qualification. This variant is suitable for automotive and mission-critical applications requiring enhanced reliability screening and qualification documentation. The SFT15GH maintains identical electrical and mechanical specifications while providing extended qualification scope.

Substitution Basis: Both parts are manufactured by Taiwan Semiconductor Corporation and share identical core electrical parameters: 300 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage drop, 35 ns reverse recovery time, and T-18 axial through-hole packaging. The distinction between the two parts is the automotive-grade qualification of the SFT15GH, which does not alter electrical or mechanical compatibility but extends the part's application domain to regulated automotive environments.

Frequently Asked Questions (FAQ)

Q: Can SFT15GH be used as a direct replacement for SFT15G?

A: Yes. The SFT15GH is a parametric equivalent with identical electrical and mechanical specifications. All core parameters—reverse voltage, rectified current, forward voltage, recovery time, and package configuration—are equivalent. The SFT15GH includes automotive-grade qualification (AEC-Q101), which does not restrict its use in standard applications.

Q: What is the difference between SFT15G and SFT15GH?

A: The primary difference is qualification level. The SFT15GH carries automotive-grade designation with AEC-Q101 qualification, indicating enhanced reliability screening and documentation suitable for automotive applications. Electrical and mechanical specifications are identical.

Q: Are both parts available in the same package?

A: Yes. Both SFT15G and SFT15GH are supplied in T-18 axial through-hole packages with TS-1 supplier device packaging. They are mechanically interchangeable in PCB layouts and through-hole mounting configurations.

Q: What are the critical electrical parameters for substitution?

A: The critical parameters determining substitution eligibility are: 300 V maximum DC reverse voltage, 1 A average rectified current, 1.3 V maximum forward voltage at 1 A, 35 ns reverse recovery time, and 5 µA maximum reverse leakage current at 300 V. All substitute parts must meet these specifications.

Q: Can these parts be used in automotive applications?

A: The SFT15G is suitable for general-purpose automotive applications. The SFT15GH is specifically qualified for automotive use with AEC-Q101 certification and is the preferred choice for regulated automotive environments requiring documented qualification.

Q: What is the operating temperature range?

A: Both SFT15G and SFT15GH operate across a junction temperature range of -55°C to 150°C, providing coverage for industrial, commercial, and automotive temperature environments.

Q: Are these parts RoHS compliant?

A: Yes. Both SFT15G and SFT15GH are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.