FESB8DTHE3_A/P Equivalent & Substitute Parts

Part Overview

The FESB8DTHE3_A/P is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is rated for 200 V DC reverse voltage and 8 A average rectified current in a TO-263AB (D2PAK) package. The device features fast recovery characteristics with a reverse recovery time of 35 ns and is qualified to AEC-Q101 automotive standards.

This part is designated as Last Time Buy, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for ongoing production and field service applications.

Substiute Parts

FESB8DTHE3_A/P

Vishay General Semiconductor - Diodes DivisionIn Stock: 1135FESB8DTHE3_A/P Datasheet

Current PartRFQ

FESB8DTHM3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 979FESB8DTHM3/I Datasheet

MFR RecommendedRFQ

STTH1002CGY-TR

STMicroelectronicsIn Stock: 3418STTH1002CGY-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FESB8DTHE3_A/P is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 8 A per diode
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature Range: Must encompass or exceed -55°C to 150°C

Mechanical Equivalence Requirements:

• Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
• Mounting Type: Surface Mount

Compliance Requirements:

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

Substitute parts must satisfy all electrical, mechanical, and compliance criteria. Forward voltage and reverse leakage characteristics may vary within acceptable design margins provided the primary ratings are met.

Parameter Comparison

Engineering Selection Recommendations

FESB8DTHM3/I (Vishay General Semiconductor - Diodes Division)

This substitute is a direct equivalent manufactured by the same supplier as the main part. It maintains identical electrical specifications including voltage rating, current capacity, forward voltage, and reverse recovery time. The FESB8DTHM3/I is in Active product status, ensuring long-term availability and supply chain stability. It carries the same AEC-Q101 automotive qualification and ROHS3 compliance as the original part. This substitute is the preferred choice for applications requiring exact electrical and thermal performance matching.

STTH1002CGY-TR (STMicroelectronics)

This substitute is a diode array configuration with 1 Pair Common Cathode topology, providing equivalent electrical performance at the per-diode level. The STTH1002CGY-TR meets all voltage and current requirements with improved reverse recovery time (25 ns versus 35 ns) and lower reverse leakage current (5 µA versus 10 µA). The operating temperature range extends to 175°C, exceeding the original specification. This part is in Active product status with AEC-Q101 qualification and ROHS3 compliance. The diode array configuration requires circuit design consideration for proper utilization of the common cathode topology.

Both substitutes are qualified to AEC-Q101 automotive standards and maintain ROHS3 compliance, ensuring regulatory and quality requirements are satisfied.

Frequently Asked Questions (FAQ)

Q: Can FESB8DTHM3/I be used as a direct replacement for FESB8DTHE3_A/P?

A: Yes. The FESB8DTHM3/I is electrically and mechanically equivalent to the FESB8DTHE3_A/P. Both parts share identical voltage ratings (200 V), current capacity (8 A), forward voltage characteristics (950 mV @ 8 A), reverse recovery time (35 ns), and package configuration (TO-263AB D2PAK). Both are AEC-Q101 qualified and ROHS3 compliant. The primary difference is product status: FESB8DTHM3/I is Active, while the original is Last Time Buy.

Q: What is the key difference between FESB8DTHE3_A/P and STTH1002CGY-TR?

A: The STTH1002CGY-TR is a diode array with 1 Pair Common Cathode configuration, whereas the FESB8DTHE3_A/P is a single diode. Both meet the 200 V, 8 A per-diode electrical requirements. The STTH1002CGY-TR offers improved performance characteristics: faster reverse recovery time (25 ns versus 35 ns) and lower reverse leakage current (5 µA versus 10 µA). The common cathode topology requires circuit design consideration to ensure proper utilization of the shared cathode connection.

Q: Are all substitute parts in the same package?

A: Yes. All parts listed—FESB8DTHE3_A/P, FESB8DTHM3/I, and STTH1002CGY-TR—use the TO-263-3, D2PAK (2 Leads + Tab), TO-263AB package. This ensures mechanical compatibility and identical PCB footprint requirements.

Q: Do the substitute parts meet automotive qualification requirements?

A: Yes. Both FESB8DTHM3/I and STTH1002CGY-TR are qualified to AEC-Q101 automotive standards and carry Automotive grade designation, matching the original part's qualification level.

Q: What is the operating temperature range for each part?

A: FESB8DTHE3_A/P and FESB8DTHM3/I operate from -55°C to 150°C junction temperature. STTH1002CGY-TR operates from -40°C to 175°C, providing an extended upper temperature range of 25°C above the original specification.

Q: Are there any RoHS or environmental compliance differences?

A: No. All three parts are ROHS3 compliant and REACH unaffected, ensuring equivalent environmental and regulatory compliance.

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

A: Last Time Buy status indicates the manufacturer has discontinued production of the FESB8DTHE3_A/P. Existing inventory is available, but no future production is planned. The listed substitutes—FESB8DTHM3/I and STTH1002CGY-TR—are in Active product status, ensuring continued availability for future applications.