HT16G General Purpose Rectifier Diode Equivalent & Substitute Parts

Part Overview

The HT16G is a general purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 1 A average rectified current in a through-hole TS-1 axial package. This diode is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and package specifications align with the original component, enabling direct replacement in circuit applications without design modification.

Substiute Parts

HT16G

Taiwan Semiconductor CorporationIn Stock: 1218HT16G Datasheet

Current PartRFQ

SFT18G

Taiwan Semiconductor CorporationIn Stock: 6180SFT18G Datasheet

Parametric EquivalentRFQ

SFT18GH

Taiwan Semiconductor CorporationIn Stock: 5918SFT18GH Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HT16G is determined by equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 1 A
• Current - Reverse Leakage @ Vr: 5 µA @ 600 V
• Capacitance @ Vr, F: 10pF @ 4V, 1MHz

Mechanical & Package Equivalence Requirements:

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

Compliance & Status Requirements:

• Product Status: Active
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

The substitute parts SFT18G and SFT18GH meet all electrical, mechanical, and compliance criteria for direct substitution. The SFT18GH variant includes automotive-grade qualification (AEC-Q101) and is suitable for applications requiring automotive reliability standards.

Parameter Comparison

Engineering Selection Recommendations

HT16G Selection Criteria: The HT16G is suitable for general purpose rectification applications requiring 600 V reverse voltage and 1 A average rectified current. This part maintains Active product status and full ROHS3 compliance. Standard technology classification applies to general industrial and consumer applications.

SFT18G Selection Criteria: The SFT18G provides electrical and mechanical equivalence to the HT16G with improved reverse recovery time (35 ns versus 75 ns). This substitute is appropriate for applications where faster switching performance is beneficial. ROHS3 compliance and Active product status are maintained. Standard technology classification applies.

SFT18GH Selection Criteria: The SFT18GH is the automotive-grade variant with AEC-Q101 qualification. This substitute is required for automotive applications, industrial equipment subject to automotive reliability standards, or systems requiring enhanced qualification documentation. Electrical and mechanical specifications remain equivalent to the HT16G. ROHS3 compliance and Active product status are maintained.

Compliance Considerations: All three parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity classification. Selection between standard and automotive-grade variants depends on application requirements and qualification mandates, not on environmental or regulatory compliance differences.

Frequently Asked Questions (FAQ)

Q: Can SFT18G and SFT18GH be used interchangeably with HT16G?

A: Yes. Both SFT18G and SFT18GH meet all electrical and mechanical equivalence criteria for the HT16G. The SFT18GH includes automotive-grade qualification (AEC-Q101), making it suitable for applications requiring automotive reliability standards. Selection between SFT18G and SFT18GH depends on application requirements, not on compatibility.

Q: What is the difference between SFT18G and SFT18GH?

A: Both parts are electrically and mechanically equivalent. The SFT18GH carries automotive-grade classification with AEC-Q101 qualification, while the SFT18G is standard-grade. The SFT18GH is required for automotive applications or systems requiring automotive reliability documentation.

Q: Does the improved reverse recovery time (35 ns) of SFT18G and SFT18GH affect circuit performance compared to HT16G (75 ns)?

A: The reverse recovery time difference is within the fast recovery classification (≤ 500ns, > 200mA) specified for all three parts. Both substitute parts meet the speed classification requirement. The faster recovery time of SFT18G and SFT18GH may provide performance benefits in high-frequency switching applications but does not prevent substitution in applications designed for the HT16G.

Q: Are the TS-1 axial packages of all three parts physically identical?

A: Yes. HT16G, SFT18G, and SFT18GH all use the T-18 axial package with TS-1 supplier device package designation. Physical dimensions and lead spacing are identical, enabling direct mechanical substitution on printed circuit boards.

Q: Do all three parts meet the same environmental and compliance standards?

A: Yes. HT16G, SFT18G, and SFT18GH are all ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited). Environmental and regulatory compliance is equivalent across all three parts.

Q: Which part should be selected for a new design?

A: For new designs, SFT18G or SFT18GH are appropriate selections based on application requirements. SFT18GH is required for automotive applications or systems requiring AEC-Q101 qualification. SFT18G is suitable for general purpose applications. Both provide improved reverse recovery time compared to HT16G while maintaining full electrical and mechanical equivalence.