HT11G A1G Equivalent & Substitute Parts

Part Overview

The HT11G A1G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1 A average rectified current in a through-hole TS-1 axial package. This component is classified as a fast recovery diode with a reverse recovery time of 50 ns, suitable for standard rectification applications requiring moderate voltage and current ratings.

The HT11G A1G has been discontinued at DiGi Electronics. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and replacement applications.

Substiute Parts

HT11G A1G

Taiwan Semiconductor CorporationIn Stock: 943HT11G A1G Datasheet

Current PartRFQ

HT11G A0G

Taiwan Semiconductor CorporationIn Stock: 925HT11G A0G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HT11G A1G are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 1 A
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 1 A
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 50 V
• Capacitance @ Vr, F: 15 pF @ 4V, 1MHz
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Parameters (Must Match):

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

Compliance & Status Parameters:

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

Substitute parts must satisfy all electrical and mechanical parameters without deviation to ensure functional and physical compatibility in existing circuit designs and PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The HT11G A0G is a direct electrical and mechanical equivalent to the HT11G A1G. Both parts share identical electrical specifications, including reverse voltage rating, forward current capacity, forward voltage drop, and reverse recovery characteristics. Both components are packaged in the T-18 axial through-hole format and maintain identical thermal operating ranges.

The primary distinction between these parts is product status: the HT11G A1G is discontinued at DiGi Electronics, while the HT11G A0G maintains active status with current inventory availability (903 pieces in stock). Both parts carry equivalent compliance certifications, including ROHS3 compliance, REACH unaffected status, and MSL Level 1 moisture sensitivity rating.

For applications currently using the HT11G A1G, the HT11G A0G provides full functional and physical substitution without circuit redesign or PCB layout modification. The active product status of the HT11G A0G ensures long-term component availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the HT11G A0G be used as a direct replacement for the HT11G A1G in existing designs?

A: Yes. The HT11G A0G is electrically and mechanically identical to the HT11G A1G across all specified parameters. No circuit modifications or PCB layout changes are required for substitution.

Q: What are the key electrical parameters that define substitution eligibility for this diode?

A: Substitution eligibility is determined by matching the following parameters: 50 V DC reverse voltage rating, 1 A average rectified current, 1 V maximum forward voltage at 1 A, 50 ns reverse recovery time, 5 µA reverse leakage current at 50 V, and 15 pF capacitance at 4 V and 1 MHz. All substitute parts must meet these specifications exactly.

Q: Are there any package or mounting differences between the HT11G A1G and HT11G A0G?

A: No. Both parts use identical T-18 axial through-hole packaging and TS-1 supplier device package designation. Physical dimensions and lead spacing are equivalent, allowing direct PCB substitution without layout modification.

Q: What is the difference between the HT11G A1G and HT11G A0G part numbers?

A: The difference lies in the suffix designation (A1G versus A0G). Both parts are manufactured by Taiwan Semiconductor Corporation and share the same base product number HT11. The suffix variation reflects internal manufacturing or distribution tracking but does not affect electrical or mechanical specifications.

Q: Are both parts compliant with environmental and regulatory standards?

A: Yes. Both the HT11G A1G and HT11G A0G are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 moisture sensitivity rating. Both parts meet equivalent environmental and regulatory requirements for industrial and commercial applications.

Q: Why is the HT11G A1G discontinued while the HT11G A0G remains active?

A: Product discontinuation decisions are based on supplier manufacturing and distribution strategies. The HT11G A0G maintains active status with current inventory availability, making it the recommended choice for new designs and component replacement applications.

Q: What is the operating temperature range for both parts?

A: Both the HT11G A1G and HT11G A0G operate across a junction temperature range of -55°C to 150°C, providing equivalent thermal performance for standard industrial and commercial applications.