SDM40E20LS-7 Equivalent & Substitute Parts

Part Overview

The SDM40E20LS-7 is a Schottky diode array in a 1 Pair Series Connection configuration, rated for 20 V DC reverse voltage and 400 mA average rectified current per diode. This component is packaged in a Surface Mount TO-236-3 (SOT-23-3) package and features fast recovery characteristics suitable for high-frequency switching applications.

The SDM40E20LS-7 is currently discontinued at DiGi Electronics. Equivalent substitute parts are available to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

SDM40E20LS-7

Diodes IncorporatedIn Stock: 12992SDM40E20LS-7 Datasheet

Current PartRFQ

SDM40E20LS-7-F

Diodes IncorporatedIn Stock: 53160SDM40E20LS-7-F Datasheet

Parametric EquivalentRFQ

SDM40E20LSQ-7-F

Diodes IncorporatedIn Stock: 13002SDM40E20LSQ-7-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SDM40E20LS-7 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Diode Configuration: 1 Pair Series Connection
• Technology: Schottky
• Voltage - DC Reverse (Vr) (Max): 20 V
• Current - Average Rectified (Io) (per Diode): 400 mA (DC)
• Voltage - Forward (Vf) (Max) @ If: 310 mV @ 100 mA
• Speed: Fast Recovery ≤ 500 ns, > 200 mA (Io)
• Current - Reverse Leakage @ Vr: 250 µA @ 20 V
• Operating Temperature - Junction: -65°C ~ 125°C
• Package / Case: TO-236-3, SC-59, SOT-23-3
• Supplier Device Package: SOT-23-3

All substitute parts listed maintain identical electrical performance and mechanical compatibility with the original SDM40E20LS-7 component. Packaging format (Tape & Reel versus bulk) does not affect electrical or mechanical substitution eligibility.

Parameter Comparison

Engineering Selection Recommendations

SDM40E20LS-7-F is the direct functional equivalent to the discontinued SDM40E20LS-7. Both parts share identical electrical specifications and mechanical packaging. The SDM40E20LS-7-F carries Active product status and ROHS3 compliance, making it suitable for new designs and production applications requiring RoHS-compliant components.

SDM40E20LSQ-7-F is functionally equivalent with additional automotive-grade qualification (AEC-Q101). This variant is appropriate for applications requiring automotive-grade reliability standards. The SDM40E20LSQ-7-F maintains all electrical and mechanical parameters of the original part while providing enhanced qualification documentation.

Both substitute parts are manufactured by Diodes Incorporated and are available in Tape & Reel packaging format. Selection between SDM40E20LS-7-F and SDM40E20LSQ-7-F depends on application requirements and qualification mandates rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can SDM40E20LS-7-F be used as a direct replacement for SDM40E20LS-7?

A: Yes. The SDM40E20LS-7-F is electrically and mechanically identical to the SDM40E20LS-7. Both parts feature the same Schottky diode array configuration, 20 V reverse voltage rating, 400 mA current rating, forward voltage characteristics, and SOT-23-3 package. The primary difference is product status (Active versus Discontinued) and RoHS compliance (ROHS3 versus non-compliant).

Q: What is the difference between SDM40E20LS-7-F and SDM40E20LSQ-7-F?

A: Both parts are electrically and mechanically equivalent. The SDM40E20LSQ-7-F carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications. Selection between these parts depends on whether automotive-grade qualification is required for the application.

Q: Are there packaging differences between the substitute parts?

A: The SDM40E20LS-7 is available in bulk packaging. Both substitute parts (SDM40E20LS-7-F and SDM40E20LSQ-7-F) are supplied in Tape & Reel (TR) format. This packaging difference does not affect electrical or mechanical compatibility; it reflects standard supply chain practices for active components.

Q: Does the RoHS compliance difference affect substitution?

A: RoHS compliance status reflects manufacturing and material standards rather than electrical performance. The SDM40E20LS-7-F and SDM40E20LSQ-7-F are ROHS3 compliant, while the original SDM40E20LS-7 is non-compliant. For applications subject to RoHS regulations, the compliant substitutes are required. For applications without RoHS mandates, compliance status does not affect functional substitution.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All three parts share identical SOT-23-3 package dimensions and pinout. PCB layouts designed for the SDM40E20LS-7 accommodate the SDM40E20LS-7-F and SDM40E20LSQ-7-F without modification.

Q: What is the significance of the "-F" suffix in part numbers?

A: The "-F" suffix indicates Tape & Reel packaging format. This is a supply format designation and does not affect electrical specifications or functional performance.