VS-8S2TH06I-M Equivalent & Substitute Parts

Part Overview

The VS-8S2TH06I-M is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 600V DC reverse voltage and 8A average rectified current in a through-hole TO-220AC package. This component is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement continuity. The part belongs to the FRED Pt® series and utilizes standard diode technology with fast recovery characteristics suitable for power supply and rectification applications.

Substiute Parts

VS-8S2TH06I-M

Vishay General Semiconductor - Diodes DivisionIn Stock: 2250VS-8S2TH06I-M Datasheet

Current PartRFQ

QH08TZ600

Power IntegrationsIn Stock: 3822QH08TZ600 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VS-8S2TH06I-M is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Current - Average Rectified (Io): 8 A
• Mounting Type: Through Hole
• Package / Case: TO-220-2 (TO-220AC supplier package)
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Within standard rectifier diode tolerances
• Reverse Recovery Time (trr): Faster recovery times are acceptable
• Current - Reverse Leakage @ Vr: Higher leakage within standard specifications is acceptable
• Operating Temperature - Junction (Max): Equal or higher maximum ratings are acceptable
• RoHS/REACH Compliance: Active product status with current compliance certifications is preferred

The substitute part QH08TZ600 meets all critical matching parameters and demonstrates improved performance characteristics in reverse recovery time and compliance status.

Parameter Comparison

Engineering Selection Recommendations

The QH08TZ600 manufactured by Power Integrations serves as a direct electrical and mechanical substitute for the obsolete VS-8S2TH06I-M. Both components share identical voltage and current ratings, package configuration, and fast recovery speed classification, enabling direct circuit substitution.

Advantages of QH08TZ600:

• Active product status ensures ongoing availability and supply chain continuity
• Improved reverse recovery time (11.1 ns versus 16 ns) provides enhanced switching performance
• Current RoHS compliance certification supports modern procurement and environmental standards
• Identical TO-220AC package and through-hole mounting configuration permits direct board-level replacement

Design Considerations:

• The QH08TZ600 exhibits higher reverse leakage current (250 µA versus 50 µA at 600 V), which may impact applications with stringent leakage specifications
• Maximum junction operating temperature of 150°C for QH08TZ600 is lower than the VS-8S2TH06I-M specification of 175°C; verify thermal design margins for high-temperature applications
• Forward voltage characteristics remain within acceptable tolerance (3.15 V versus 3.1 V at 8 A)

Selection of QH08TZ600 is appropriate for applications requiring active product status, improved switching performance, and current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can QH08TZ600 be used as a direct replacement for VS-8S2TH06I-M in existing designs?

A: Yes. Both components share identical voltage ratings (600 V), current ratings (8 A), package configuration (TO-220AC), and mounting type (through hole). The QH08TZ600 provides improved reverse recovery time and active product status. Verify thermal design margins, as the QH08TZ600 has a lower maximum junction temperature (150°C versus 175°C).

Q: What are the key electrical differences between these parts?

A: The primary electrical differences are reverse recovery time (11.1 ns for QH08TZ600 versus 16 ns for VS-8S2TH06I-M) and reverse leakage current (250 µA versus 50 µA at 600 V). Forward voltage characteristics are nearly identical (3.15 V versus 3.1 V at 8 A). The faster recovery time of QH08TZ600 improves switching performance in rectification circuits.

Q: Are there packaging or mechanical compatibility concerns?

A: No. Both components utilize the TO-220-2 package with TO-220AC supplier designation and through-hole mounting. Physical dimensions and pin configurations are identical, permitting direct board-level substitution without layout modifications.

Q: Why is the VS-8S2TH06I-M listed as obsolete?

A: The VS-8S2TH06I-M is classified as obsolete by Vishay General Semiconductor - Diodes Division. The QH08TZ600 is an active product from Power Integrations with equivalent electrical and mechanical specifications, ensuring continued design support and procurement availability.

Q: Does the higher reverse leakage current of QH08TZ600 affect circuit performance?

A: The reverse leakage current of QH08TZ600 (250 µA at 600 V) is higher than the VS-8S2TH06I-M (50 µA at 600 V). For most general-purpose rectification applications, this difference is acceptable. Applications with stringent leakage specifications or high-impedance circuits should evaluate the impact on circuit performance.

Q: What compliance certifications apply to QH08TZ600?

A: QH08TZ600 is RoHS Compliant and REACH Unaffected. The VS-8S2TH06I-M is ROHS3 Compliant. Both components carry EAR99 ECCN classification and 8541.10.0080 HTSUS code.