STTH3L06B Equivalent & Substitute Parts

Part Overview

The STTH3L06B is a general-purpose rectifier diode manufactured by STMicroelectronics, rated for 600 V DC reverse voltage and 3 A average rectified current in a Surface Mount DPAK package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part is ROHS3 compliant and carries an unlimited moisture sensitivity level (MSL 1), suitable for standard industrial applications.

Substiute Parts

STTH3L06B

STMicroelectronicsIn Stock: 1915STTH3L06B Datasheet

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VS-5EWH06FNTRHM3

Vishay General Semiconductor - Diodes DivisionIn Stock: 1146VS-5EWH06FNTRHM3 Datasheet

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VS-6EWX06FNHM3

Vishay General Semiconductor - Diodes DivisionIn Stock: 730VS-6EWX06FNHM3 Datasheet

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VS-6EWX06FNTRHM3

Vishay General Semiconductor - Diodes DivisionIn Stock: 1050VS-6EWX06FNTRHM3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the STTH3L06B are identified based on strict electrical and mechanical compatibility criteria. All substitute diodes maintain the following core parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal to or greater than 3 A
• Voltage - Forward (Vf) (Max) @ If: Higher values acceptable within circuit design margins
• Reverse Recovery Time (trr): Lower values acceptable (improved performance)
• Current - Reverse Leakage @ Vr: Higher values acceptable within circuit specifications
• Operating Temperature - Junction: Extended range acceptable

The substitute parts listed below meet all mandatory matching criteria and represent direct functional replacements for the STTH3L06B in applications requiring 600 V, 3 A rectification in DPAK surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The STTH3L06B is classified as obsolete. All three substitute parts—VS-5EWH06FNTRHM3, VS-6EWX06FNHM3, and VS-6EWX06FNTRHM3—carry active product status, ensuring long-term availability and manufacturing support.

Compliance and Certification: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the regulatory posture of the original component. The Vishay parts carry AEC-Q101 automotive qualification, providing additional quality assurance beyond the base requirements.

Current Rating Selection: The substitute parts offer higher current ratings (5 A and 6 A) compared to the original 3 A specification. These higher-rated devices are electrically compatible with 3 A circuit requirements and provide design margin for thermal and reliability considerations.

Reverse Recovery Time Performance: The substitute parts demonstrate improved reverse recovery time characteristics (19–25 ns versus 85 ns), indicating faster switching performance and reduced switching losses in rectification applications.

Packaging and Availability: VS-5EWH06FNTRHM3 and VS-6EWX06FNTRHM3 are supplied in Tape & Reel (TR) packaging, suitable for automated assembly operations. VS-6EWX06FNHM3 is supplied in Tube packaging. All three maintain the identical TO-252-3 DPAK footprint for direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can the VS-5EWH06FNTRHM3 or VS-6EWX06FNTRHM3 be used as direct replacements for the STTH3L06B?

A: Yes. Both parts maintain the required 600 V reverse voltage rating, DPAK surface mount package, and fast recovery speed classification. The higher current ratings (5 A and 6 A) are compatible with 3 A circuit requirements and provide additional design margin.

Q: What is the difference between the three substitute parts?

A: The primary differences are current rating and reverse recovery time. VS-5EWH06FNTRHM3 is rated for 5 A with 25 ns recovery time. VS-6EWX06FNHM3 and VS-6EWX06FNTRHM3 are both rated for 6 A with 19–21 ns recovery time. The packaging differs: VS-6EWX06FNHM3 is supplied in Tube; the other two are supplied in Tape & Reel.

Q: Are there any thermal or operating temperature differences between the STTH3L06B and the substitute parts?

A: The maximum junction temperature is 175°C for all parts. The substitute Vishay parts specify an extended operating temperature range of −65°C to 175°C, compared to the STTH3L06B specification of 175°C maximum. This extended range provides additional design flexibility for low-temperature applications.

Q: Do the substitute parts require any circuit design modifications?

A: No circuit modifications are required. The substitute parts are electrically compatible with the original STTH3L06B in terms of voltage rating, package footprint, and switching characteristics. The higher current ratings and improved reverse recovery times represent performance enhancements rather than incompatibilities.

Q: Which substitute part should be selected for new designs?

A: Selection depends on procurement and assembly requirements. For automated assembly with tape and reel packaging, either VS-5EWH06FNTRHM3 or VS-6EWX06FNTRHM3 is appropriate. For manual assembly or lower-volume applications, VS-6EWX06FNHM3 in Tube packaging is suitable. All three parts are active products with long-term availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original STTH3L06B.

Q: What is the significance of the AEC-Q101 qualification on the Vishay parts?

A: AEC-Q101 is an automotive industry qualification standard. This certification indicates that the Vishay parts have undergone rigorous testing and quality validation for automotive applications, providing additional assurance of reliability and consistency beyond standard industrial requirements.