MA27D290GL Equivalent & Substitute Parts

Part Overview

The MA27D290GL is a Schottky diode manufactured by Panasonic Electronic Components, rated for 30 V DC reverse voltage with 100 mA average rectified current. This component is packaged in a 2-SMD, Flat Lead surface mount configuration (SSSMini2-F3) and is classified as obsolete. Due to its obsolete status, equivalent substitute parts are necessary for ongoing production, maintenance, and new design implementations where this diode specification remains applicable.

Substiute Parts

MA27D290GL

Panasonic Electronic ComponentsIn Stock: 58852MA27D290GL Datasheet

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RB521CS-30T2R

Rohm SemiconductorIn Stock: 69088RB521CS-30T2R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MA27D290GL is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 30 V
• Current - Average Rectified (Io): 100 mA
• Technology: Schottky
• Mounting Type: Surface Mount
• Package / Case: 2-SMD, Flat Lead

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Max) @ If: Substitute may differ from 420 mV @ 100 mA, provided the forward voltage does not exceed the original specification under equivalent test conditions
• Current - Reverse Leakage @ Vr: Substitute may differ from 120 µA @ 30 V, provided leakage remains within acceptable limits for the application
• Operating Temperature - Junction (Max): Substitute may exceed 125°C maximum junction temperature
• Supplier Device Package designation: May differ (e.g., VMN2 (SOD-923) vs. SSSMini2-F3) provided physical footprint and lead configuration remain compatible

The RB521CS-30T2R from Rohm Semiconductor meets all mandatory matching parameters and qualifies as a direct substitute for the MA27D290GL.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MA27D290GL is classified as obsolete, making the RB521CS-30T2R a necessary alternative. The RB521CS-30T2R is classified as "Not For New Designs," indicating it remains available for replacement and maintenance applications but is not recommended for new product development.

Compliance and Certification: Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0070) classifications. The RB521CS-30T2R provides additional compliance documentation through RoHS3 Compliance and REACH Unaffected status, offering enhanced regulatory alignment for applications requiring these certifications.

Performance Characteristics: The RB521CS-30T2R demonstrates superior electrical performance in forward voltage drop (350 mV @ 10 mA versus 420 mV @ 100 mA) and reverse leakage current (10 µA @ 10 V versus 120 µA @ 30 V). The higher maximum junction temperature rating (150°C versus 125°C) provides additional thermal margin in applications subject to elevated operating conditions.

Package Compatibility: Both components utilize 2-SMD, Flat Lead surface mount configurations. The physical footprint and lead spacing remain compatible despite different supplier device package designations (VMN2 (SOD-923) for RB521CS-30T2R versus SSSMini2-F3 for MA27D290GL). PCB layout and assembly processes require no modification.

Frequently Asked Questions (FAQ)

Q: Can the RB521CS-30T2R directly replace the MA27D290GL without PCB modifications?

A: Yes. Both components share identical voltage ratings (30 V), current ratings (100 mA), technology (Schottky), and mounting configuration (2-SMD, Flat Lead surface mount). The physical footprint and lead spacing are compatible. No PCB layout changes are required.

Q: What is the significance of the different forward voltage specifications?

A: The RB521CS-30T2R exhibits lower forward voltage drop (350 mV @ 10 mA) compared to the MA27D290GL (420 mV @ 100 mA). This represents improved efficiency and reduced power dissipation in the substitute part. Applications sensitive to forward voltage characteristics should verify that the lower drop does not introduce unintended circuit behavior.

Q: Why do the reverse leakage current specifications differ between the two parts?

A: The RB521CS-30T2R demonstrates lower reverse leakage current (10 µA @ 10 V) than the MA27D290GL (120 µA @ 30 V). This indicates superior reverse blocking performance in the substitute part. For applications where reverse leakage is a critical parameter, the RB521CS-30T2R provides enhanced performance.

Q: What does "Not For New Designs" status mean for the RB521CS-30T2R?

A: This classification indicates the part remains available for replacement and maintenance of existing products but is not recommended for incorporation into new product designs. For new designs, consultation with the manufacturer regarding current-generation alternatives is advised.

Q: Are there compliance differences between the two parts?

A: The RB521CS-30T2R provides explicit RoHS3 Compliance and REACH Unaffected certifications, whereas the MA27D290GL does not include these designations in the provided specifications. For applications requiring regulatory compliance documentation, the RB521CS-30T2R offers enhanced certification coverage.

Q: How do the maximum junction temperature ratings affect component selection?

A: The RB521CS-30T2R supports a higher maximum junction temperature (150°C) compared to the MA27D290GL (125°C). This provides additional thermal headroom in applications operating at elevated ambient temperatures or with high power dissipation. The substitute part is suitable for all thermal environments where the original part was specified.

Q: What packaging formats are available for the RB521CS-30T2R?

A: The RB521CS-30T2R is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated production environments.