SD103ASDM-7-F-2477 Equivalent & Substitute Parts

Part Overview

The SD103ASDM-7-F-2477 is a Schottky diode array in a 2 Pair Series Connection configuration, rated for 40 V DC reverse voltage and 350 mA average rectified current per diode. This component is designed for surface mount applications in the SOT-23-6 package format. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

SD103ASDM-7-F-2477

Diodes IncorporatedIn Stock: 1055SD103ASDM-7-F-2477 Datasheet

Current PartRFQ

SD103ASDM-7-F

Diodes IncorporatedIn Stock: 4035SD103ASDM-7-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SD103ASDM-7-F-2477 is based on electrical and mechanical parameter equivalence. The primary substitute part, SD103ASDM-7-F, maintains identical specifications across all critical parameters that define functional compatibility:

Key Parameters Determining Substitution:

• Diode Configuration: 2 Pair Series Connection (identical)
• Technology: Schottky (identical)
• Voltage - DC Reverse (Vr) (Max): 40 V (identical)
• Current - Average Rectified (Io) (per Diode): 350 mA (identical)
• Voltage - Forward (Vf) (Max) @ If: 600 mV @ 200 mA (identical)
• Reverse Recovery Time (trr): 10 ns (identical)
• Current - Reverse Leakage @ Vr: 5 µA @ 30 V (identical)
• Operating Temperature - Junction: -65°C ~ 125°C (identical)
• Package / Case: SOT-23-6 (identical)
• Supplier Device Package: SOT-26 (identical)
• RoHS Status: ROHS3 Compliant (identical)
• REACH Status: REACH Unaffected (identical)

The substitute part differs only in product status (Active versus Obsolete) and packaging format (Cut Tape & Digi-Reel versus the original packaging designation), with no electrical or mechanical parameter deviations.

Parameter Comparison

Engineering Selection Recommendations

The SD103ASDM-7-F is the direct equivalent substitute for the obsolete SD103ASDM-7-F-2477. Selection of this substitute is based on the following engineering criteria:

Product Status: The substitute part maintains Active product status, ensuring long-term availability and continued manufacturer support, whereas the main part is classified as Obsolete.

Regulatory Compliance: Both parts maintain identical ROHS3 Compliance and REACH Unaffected status, confirming equivalent environmental and regulatory standing.

Electrical and Mechanical Equivalence: All electrical parameters, including voltage ratings, current specifications, recovery time characteristics, and leakage current, are identical. The mechanical package format (SOT-23-6 / SOT-26) is unchanged, ensuring direct pin-for-pin and footprint compatibility.

Packaging Availability: The substitute part is available in Cut Tape and Digi-Reel packaging formats with higher inventory levels (3990 Pcs versus 946 Pcs), supporting both production and component distribution requirements.

The SD103ASDM-7-F substitution requires no circuit redesign, PCB layout modification, or thermal management recalculation.

Frequently Asked Questions (FAQ)

Q: Can the SD103ASDM-7-F be used as a direct replacement for the SD103ASDM-7-F-2477?

A: Yes. The SD103ASDM-7-F is a direct equivalent substitute. All electrical parameters, mechanical dimensions, and package specifications are identical. No circuit modifications are required.

Q: Are there any differences in the SOT-23-6 package between these parts?

A: No. Both parts use the identical SOT-23-6 package format with SOT-26 supplier device package designation. Pin configuration, lead spacing, and PCB footprint are unchanged.

Q: What is the difference between the packaging formats listed?

A: The main part (SD103ASDM-7-F-2477) does not specify a packaging format in the provided data. The substitute part (SD103ASDM-7-F) is available in Cut Tape (CT) and Digi-Reel® formats, which are standard distribution methods for surface mount components. Both formats contain identical components; the difference is in the carrier tape and reel configuration used for automated assembly equipment.

Q: Why is the main part classified as Obsolete?

A: Product obsolescence is determined by the manufacturer based on production discontinuation and market demand. The SD103ASDM-7-F-2477 has been discontinued, but the functionally equivalent SD103ASDM-7-F remains in active production.

Q: Are the RoHS and REACH compliance statuses the same?

A: Yes. Both parts maintain ROHS3 Compliance and REACH Unaffected status, confirming equivalent environmental and regulatory compliance.

Q: What is the reverse recovery time specification, and why is it important?

A: The reverse recovery time (trr) is 10 ns for both parts. This parameter defines the time required for the diode to switch from forward conduction to reverse blocking state. Identical specifications ensure equivalent switching performance in high-frequency applications.

Q: Can I use the SD103ASDM-7-F in existing inventory management systems designed for the SD103ASDM-7-F-2477?

A: Yes. The parts are electrically and mechanically equivalent. However, the substitute part number should be updated in component databases and bill of materials documentation to reflect the active product status and ensure accurate inventory tracking.