STTH1R04Q Equivalent & Substitute Parts

Part Overview

The STTH1R04Q is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-15 (DO-204AC) through-hole axial package. This component is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support, maintenance, and production continuity. The fast recovery characteristic (≤500 ns) and 30 ns reverse recovery time position this diode for applications requiring rapid switching performance in power conversion and rectification circuits.

Substiute Parts

STTH1R04Q

STMicroelectronicsIn Stock: 7413STTH1R04Q Datasheet

Current PartRFQ

1N5617GP-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 90051N5617GP-E3/54 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the STTH1R04Q is determined by strict equivalence across the following electrical and mechanical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 1 A
• Package / Case: DO-204AC (DO-15) through-hole axial configuration
• Mounting Type: Through Hole
• Speed Classification: Fast Recovery ≤500 ns

Acceptable Variation Ranges:

• Voltage - Forward (Vf) (Max) @ If: Substitute values must not exceed the main part specification to ensure thermal and circuit performance compatibility
• Reverse Recovery Time (trr): Substitute values within the fast recovery classification are acceptable
• Current - Reverse Leakage @ Vr: Lower leakage values indicate improved performance and are acceptable
• Operating Temperature - Junction: Substitute parts with equal or extended temperature ranges are acceptable

The 1N5617GP-E3/54 manufactured by Vishay General Semiconductor - Diodes Division meets all mandatory matching criteria and operates within acceptable variation ranges for all electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The 1N5617GP-E3/54 is a direct functional substitute for the obsolete STTH1R04Q. Both components share identical voltage and current ratings, package configuration, and fast recovery speed classification, enabling pin-for-pin replacement in through-hole applications.

Compliance and Certification Alignment: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection. The substitute part carries active product status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Performance Characteristics: The 1N5617GP-E3/54 demonstrates improved forward voltage (1.2 V versus 1.5 V at 1 A) and significantly lower reverse leakage current (500 nA versus 5 µA at 400 V), resulting in reduced power dissipation and improved circuit efficiency. The reverse recovery time of 150 ns remains within the fast recovery classification, though longer than the main part's 30 ns specification. This difference is acceptable for most general-purpose rectification applications where the primary requirement is fast recovery operation rather than ultra-fast switching.

Temperature Operating Range: The substitute part provides an extended operating temperature range (-65°C to 175°C) compared to the main part's maximum junction temperature specification, offering improved performance margin in temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N5617GP-E3/54 be used as a direct replacement for the STTH1R04Q in existing designs?

A: Yes. Both components are rated for 400 V reverse voltage and 1 A average rectified current in identical DO-15 (DO-204AC) through-hole axial packages. Pin-for-pin replacement is supported without circuit modification.

Q: What is the significance of the different reverse recovery times (30 ns versus 150 ns)?

A: Both components meet the fast recovery classification (≤500 ns). The STTH1R04Q exhibits faster recovery, which may provide marginal advantages in high-frequency switching applications. For standard rectification and power conversion circuits, the 1N5617GP-E3/54's 150 ns recovery time is functionally equivalent.

Q: Why does the substitute part have lower forward voltage and leakage current?

A: The 1N5617GP-E3/54 represents a more recent design iteration within the SUPERECTIFIER® series, incorporating improved semiconductor processing that reduces forward voltage drop and reverse leakage. These improvements result in lower power dissipation and improved circuit efficiency without compromising voltage or current ratings.

Q: Are there any packaging differences between these components?

A: No. Both components use the DO-204AC (DO-15) through-hole axial package. Mechanical fit and PCB layout compatibility are identical.

Q: What is the inventory status for each part?

A: The STTH1R04Q (obsolete) has 7402 pieces in stock. The 1N5617GP-E3/54 (active) has 8899 pieces in stock, providing superior long-term availability.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both components are ROHS3 compliant and REACH unaffected, satisfying equivalent regulatory requirements for component selection in regulated applications.

Q: Is the extended temperature range of the substitute part (-65°C to 175°C) a requirement for substitution?

A: No. The extended range is an additional benefit. The main part specification of 175°C maximum junction temperature is fully covered by the substitute part's range, ensuring thermal compatibility in all applications where the original part was used.