Equivalent & Substitute Parts Reference: RB531SM-40FHT2R

Part Overview

The RB531SM-40FHT2R is a Schottky diode designed for surface mount applications, featuring a maximum DC reverse voltage of 40 V and a 100 mA average rectified current. It is supplied in the EMD2 (SC-79, SOD-523) package and meets AEC-Q101 automotive grading. The product status is "Not For New Designs," which necessitates identifying suitable substitutes to maintain continuity in manufacturing and service support, especially for automotive and other certified applications.

Substiute Parts

RB531SM-40FHT2R

Rohm SemiconductorIn Stock: 1645RB531SM-40FHT2R Datasheet

Current PartRFQ

NSVR0240V2T1G

onsemiIn Stock: 6197NSVR0240V2T1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is determined strictly by electrical, mechanical, and qualification parameters as provided. The main factors allowing substitution in the diodes, rectifiers category include Schottky technology, equivalent or greater voltage rating (Vr), equivalent or greater current rating (Io), appropriate surface mount package (SC-79, SOD-523), and compliance with AEC-Q101 automotive qualification. Only parts meeting these criteria with matching or stricter environmental and export compliance are considered substitutes.

Parameter Comparison

Engineering Selection Recommendations

Main part RB531SM-40FHT2R status is "Not For New Designs." Substitute NSVR0240V2T1G is "Active" and matches key parameters for electrical performance, automotive grade (AEC-Q101), environmental compliance (RoHS3, REACH), export classification (EAR99), and mechanical compatibility (SC-79, SOD-523 package, MSL 1). This selection maintains all provided certifications and standards required in the automotive category.

Frequently Asked Questions (FAQ)

Q1: What parameters must match for a Schottky diode substitution in automotive applications?
A1: Technology (Schottky), voltage rating, current rating, automotive qualification (AEC-Q101), package type, and compliance (RoHS3, REACH, ECCN) must precisely match or exceed the original specification.

Q2: Are RB531SM-40FHT2R and NSVR0240V2T1G compatible in the same footprint?
A2: Both diodes use SC-79, SOD-523 package types and have matching mounting specifications, ensuring footprint compatibility.

Q3: Is the substitute part certified for automotive use?
A3: NSVR0240V2T1G is graded automotive and certified with AEC-Q101 according to the provided parameters.

Q4: Can substitute parts be used in applications requiring RoHS3 and REACH compliance?
A4: Both RB531SM-40FHT2R and NSVR0240V2T1G are ROHS3 compliant and REACH unaffected.

Q5: What should be considered regarding temperature range?
A5: NSVR0240V2T1G provides a higher maximum junction operating temperature (150°C) than RB531SM-40FHT2R (125°C), accommodating the same or more demanding environments for automotive use.

Q6: How does reverse leakage compare between the two?
A6: NSVR0240V2T1G exhibits a lower reverse leakage current (10 µA @ 40 V) versus RB531SM-40FHT2R (100 µA @ 40 V) at the same voltage rating.

Q7: Is moisture sensitivity a concern for the substitute?
A7: Both parts carry an MSL rating of 1 (Unlimited), ensuring similar resistance to ambient moisture during handling and assembly.