TMM6263FILM Equivalent & Substitute Parts

Part Overview

The TMM6263FILM is a Schottky diode manufactured by STMicroelectronics, rated for 60V DC reverse voltage with 15mA average rectified current. This component is packaged in a Mini MELF (DO-213AA) surface mount configuration and is classified as obsolete. Due to its obsolete product status, equivalent substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

TMM6263FILM

STMicroelectronicsIn Stock: 24334TMM6263FILM Datasheet

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LL101A-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 8131LL101A-GS18 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TMM6263FILM is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 60V
• Technology: Must be Schottky diode type
• Voltage - Forward (Vf) (Max) @ If: Must not exceed 1V @ 15mA
• Current - Reverse Leakage @ Vr: Must not exceed 200nA @ 50V
• Capacitance @ Vr, F: Must not exceed 2.2pF @ 0V, 1MHz

Mechanical Compatibility Criteria:

• Mounting Type: Surface Mount required
• Package / Case: Mini MELF or equivalent footprint (DO-213AA, DO-213AC, SOD-80)
• Operating Temperature - Junction: Must support -65°C minimum to 125°C minimum
• Moisture Sensitivity Level (MSL): Must be 1 (Unlimited) or equivalent

Compliance Criteria:

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The LL101A-GS18 meets all substitution criteria and is classified as an active product with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The LL101A-GS18 is a direct functional substitute for the TMM6263FILM based on the following engineering criteria:

Electrical Equivalence: The LL101A-GS18 maintains identical reverse voltage rating (60V), forward voltage characteristics (1V @ 15mA), and reverse leakage current (200nA @ 50V). The substitute's higher current rating (30mA versus 15mA) and lower capacitance (2pF versus 2.2pF) provide improved performance margins within the same application envelope.

Mechanical Compatibility: Both components utilize Mini MELF surface mount packaging with compatible footprints (DO-213AA and DO-213AC/SOD-80). The substitute maintains the same mounting type and MSL rating, ensuring assembly process compatibility.

Compliance and Availability: The LL101A-GS18 is ROHS3 compliant and REACH unaffected, matching the original part's regulatory status. As an active product with automotive-grade qualification (AEC-Q101), the substitute offers superior long-term availability and supply chain reliability compared to the obsolete TMM6263FILM.

Temperature Consideration: The substitute's maximum junction temperature of 125°C is lower than the original part's 200°C rating. Applications requiring sustained operation above 125°C require thermal analysis to confirm the substitute's suitability.

Frequently Asked Questions (FAQ)

Q: Can the LL101A-GS18 be used as a direct replacement for the TMM6263FILM in all applications?

A: The LL101A-GS18 is electrically and mechanically compatible for applications operating within its specified temperature range (-65°C to 125°C junction temperature). Applications requiring sustained operation above 125°C require design review.

Q: What are the key differences between these two diodes?

A: The primary differences are product status (obsolete versus active), current rating (15mA versus 30mA), capacitance (2.2pF versus 2pF), maximum junction temperature (200°C versus 125°C), and automotive qualification (AEC-Q101 for the substitute). All critical electrical parameters at rated conditions are identical.

Q: Are the packages physically compatible?

A: Both components use Mini MELF surface mount packaging. The TMM6263FILM uses DO-213AA while the LL101A-GS18 uses DO-213AC/SOD-80. These packages share compatible footprints and land patterns for PCB assembly.

Q: Does the higher current rating of the LL101A-GS18 affect circuit operation?

A: No. The substitute's 30mA rating is a maximum specification. In circuits designed for 15mA operation, the substitute operates within its rated limits and provides additional current margin without affecting circuit performance.

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

A: AEC-Q101 is an automotive industry qualification standard. The LL101A-GS18's automotive-grade status indicates compliance with automotive reliability and quality requirements, providing additional assurance for applications requiring automotive-level component qualification.

Q: Can I use the LL101A-GS18 in high-temperature applications above 125°C?

A: The LL101A-GS18 is specified for operation up to 125°C junction temperature. Applications requiring higher temperature operation must use components rated for those temperatures or conduct thermal analysis to verify safe operation margins.

Q: Is the lower capacitance of the LL101A-GS18 a concern?

A: The lower capacitance (2pF versus 2.2pF) is not a concern and represents improved performance. Lower junction capacitance typically results in faster switching characteristics and reduced parasitic effects in high-frequency applications.