Equivalent & Substitute Parts Reference for LSM140 MELF

Part Overview

The LSM140 MELF by Microchip Technology is a Schottky diode designed for surface mount applications within the Diodes, Rectifiers category. It features a maximum reverse voltage of 40 V and an average rectified current of 1 A, housed in the DO-213AB (MELF) package. The component is currently marked as active with 955 units in inventory. Alternate model selection is often necessary due to supply chain considerations, inventory fluctuations, or qualification of multiple sources for increased system robustness while maintaining identical electrical and mechanical performance.

Substiute Parts

LSM140 MELF

Microchip TechnologyIn Stock: 979LSM140 MELF Datasheet

Current PartRFQ

SGL41-40-E3/97

Vishay General Semiconductor - Diodes DivisionIn Stock: 6411SGL41-40-E3/97 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped on the basis of strictly matching the following key parameters: Schottky technology type, maximum reverse voltage rating, average rectified current rating, forward voltage rating at specified current, rectifier speed, reverse leakage current at maximum reverse voltage, surface mount configuration, identical DO-213AB (MELF) package/case. Additional compliance attributes such as RoHS and REACH statuses, MSL, and ECCN are also matched to ensure regulatory compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both LSM140 MELF and SGL41-40-E3/97 are classified as active, with full RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited). Both hold ECCN EAR99 classification, supporting unrestricted international usage within applicable regulatory frameworks. All compliance and certification parameters are matched.

Frequently Asked Questions (FAQ)

Q1: What are the primary substitution criteria for Schottky rectifier diodes in the DO-213AB (MELF) package?
A1: Substitution requires matching technology, maximum reverse voltage, average rectified current, forward voltage at rated current, rectifier speed, reverse leakage current, mounting type, and package/case specifications. Compliance statuses must also align.

Q2: How do I verify package compatibility for substitute parts?
A2: The substitute part must have the identical DO-213AB, MELF package and surface mount configuration to ensure mechanical fit and automated assembly compatibility.

Q3: Will the substitute part, SGL41-40-E3/97, fit in the same PCB footprint as LSM140 MELF?
A3: Both parts specify DO-213AB, MELF case and surface mount design, supporting direct mechanical interchangeability.

Q4: Are there differences in maximum operating junction temperature between LSM140 MELF and SGL41-40-E3/97?
A4: The operating temperature junction range for LSM140 MELF is -65°C to 150°C, while SGL41-40-E3/97 operates from -55°C to 125°C. Select according to application constraints as specified in component datasheets.

Q5: What compliance standards should be checked when selecting alternate rectifier diodes?
A5: RoHS, REACH, MSL, and ECCN should be verified for regulatory conformity and certification equivalence when choosing substitute parts within this component category.