FESB8JTHE3_A/I Equivalent & Substitute Parts

Part Overview

The FESB8JTHE3_A/I is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is rated for 600 V DC reverse voltage and 8 A average rectified current in a TO-263AB (D2PAK) package. The part is classified as Last Time Buy, indicating production discontinuation. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production runs and field replacements.

Substiute Parts

FESB8JTHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 2360FESB8JTHE3_A/I Datasheet

Current PartRFQ

FESB8JTHM3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1055FESB8JTHM3/I Datasheet

MFR RecommendedRFQ

STTH8R06GY-TR

STMicroelectronicsIn Stock: 3153STTH8R06GY-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FESB8JTHE3_A/I is determined by the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 8 A
• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Substitute parts may exceed the main part specification
• Reverse Recovery Time (trr): Substitute parts may be equal to or faster than the main part specification
• Current - Reverse Leakage @ Vr: Substitute parts may exceed the main part specification
• Operating Temperature - Junction: Substitute parts may have extended or equivalent temperature ranges

Substitute parts must maintain identical voltage and current ratings, package configuration, and automotive-grade qualification to ensure functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

FESB8JTHM3/I (Vishay General Semiconductor - Diodes Division)

This substitute part is manufactured by the same supplier as the main part and maintains identical electrical specifications across all critical parameters. The FESB8JTHM3/I carries Active product status, ensuring continued availability and supply chain stability. Both parts share identical voltage ratings (600 V), current ratings (8 A), forward voltage characteristics (1.5 V @ 8 A), and reverse recovery time (50 ns). The part is AEC-Q101 qualified and automotive-grade, meeting all compliance requirements. This substitute is the primary selection for direct replacement applications.

STTH8R06GY-TR (STMicroelectronics)

This substitute part meets all mandatory electrical and mechanical requirements with 600 V reverse voltage, 8 A current rating, and TO-263AB package configuration. The STTH8R06GY-TR is AEC-Q101 qualified and automotive-grade. The part exhibits faster reverse recovery time (45 ns versus 50 ns) and extended operating temperature range (-40°C to 175°C versus -55°C to 150°C). However, the forward voltage specification is higher at 3.2 V @ 8 A compared to 1.5 V @ 8 A, and reverse leakage current is elevated at 30 µA @ 600 V versus 10 µA @ 600 V. This substitute is suitable for applications where the higher forward voltage and leakage characteristics are acceptable within the circuit design margins. Active product status ensures supply availability.

Frequently Asked Questions (FAQ)

Q: Can FESB8JTHM3/I be used as a direct replacement for FESB8JTHE3_A/I?

A: Yes. The FESB8JTHM3/I is a direct substitute with identical voltage ratings (600 V), current ratings (8 A), forward voltage (1.5 V @ 8 A), reverse recovery time (50 ns), and package configuration (TO-263AB). Both parts are manufactured by Vishay and carry AEC-Q101 automotive qualification.

Q: What are the key differences between STTH8R06GY-TR and the main part?

A: The STTH8R06GY-TR maintains identical voltage and current ratings and package configuration. Differences include higher forward voltage (3.2 V @ 8 A versus 1.5 V @ 8 A), faster reverse recovery time (45 ns versus 50 ns), higher reverse leakage current (30 µA @ 600 V versus 10 µA @ 600 V), and extended operating temperature range (-40°C to 175°C versus -55°C to 150°C).

Q: Are all substitute parts in the same package?

A: Yes. All parts listed use the TO-263-3, D2PAK (2 Leads + Tab), TO-263AB package configuration, ensuring mechanical and thermal compatibility on existing PCB layouts.

Q: Do substitute parts meet automotive qualification requirements?

A: Yes. Both FESB8JTHM3/I and STTH8R06GY-TR are AEC-Q101 qualified and automotive-grade, meeting the same compliance standards as the main part.

Q: Why is the main part marked as Last Time Buy?

A: Last Time Buy status indicates that FESB8JTHE3_A/I production is being discontinued. Substitute parts with Active status ensure continued component availability for ongoing production and field service requirements.

Q: Can STTH8R06GY-TR be used in applications sensitive to forward voltage drop?

A: The STTH8R06GY-TR forward voltage specification (3.2 V @ 8 A) is significantly higher than the main part (1.5 V @ 8 A). Circuit designs with tight voltage margin requirements must evaluate whether this increased forward voltage is acceptable within the application's operating parameters.

Q: What is the impact of higher reverse leakage current in STTH8R06GY-TR?

A: The STTH8R06GY-TR reverse leakage current (30 µA @ 600 V) is three times higher than the main part (10 µA @ 600 V). Applications with stringent leakage requirements or high-impedance circuits must assess whether this characteristic is compatible with design specifications.

Q: Are there inventory considerations for part selection?

A: FESB8JTHE3_A/I has 2310 units in stock (Last Time Buy status). FESB8JTHM3/I has 947 units available (Active status). STTH8R06GY-TR has 3100 units in stock (Active status). Long-term availability is assured only with Active status parts.