RS3D-M3/9AT Equivalent & Substitute Parts

Part Overview

The RS3D-M3/9AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 200 V DC reverse voltage with a 3 A average rectified current rating and is packaged in the DO-214AB (SMC) form factor. The device is classified as a fast recovery diode with a reverse recovery time of 150 ns, suitable for standard rectification applications requiring moderate voltage and current handling.

The RS3D-M3/9AT maintains Active product status and is ROHS3 compliant. Substitute parts are identified to address inventory availability, supply chain continuity, or equivalent performance requirements in circuit designs where this diode is specified.

Substiute Parts

RS3D-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 917RS3D-M3/9AT Datasheet

Current PartRFQ

RS3D-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 15280RS3D-E3/57T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS3D-M3/9AT is determined by strict equivalence across the following critical parameters:

Voltage Rating: Maximum DC reverse voltage must equal 200 V. This parameter defines the diode's ability to block reverse bias without breakdown and is non-negotiable for circuit safety and reliability.

Current Rating: Average rectified current must equal 3 A. This parameter establishes the diode's forward conduction capability and thermal dissipation characteristics.

Forward Voltage Drop: Forward voltage at rated current (1.3 V @ 2.5 A) must match to ensure consistent circuit performance and power loss calculations.

Recovery Characteristics: Reverse recovery time of 150 ns and fast recovery classification (≤ 500ns, > 200mA) must be maintained to preserve switching performance in rectification circuits.

Package and Mounting: DO-214AB (SMC) surface mount package is required for mechanical and electrical compatibility with existing PCB layouts.

Compliance and Status: Active product status and ROHS3 compliance are mandatory for current procurement and regulatory adherence.

The RS3D-E3/57T meets all these criteria and is classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: RS3D-M3/9AT is the specified part number and should be used when available. Current inventory status indicates 811 pieces in stock.

Substitute Selection: RS3D-E3/57T is a direct parametric equivalent and may be selected when RS3D-M3/9AT availability is constrained. This substitute maintains identical electrical performance across all critical parameters. Inventory availability for RS3D-E3/57T is significantly higher at 15,200 pieces, supporting supply chain continuity.

Compliance Assurance: Both parts maintain Active product status, ROHS3 compliance, REACH unaffected status, and MSL Level 1 (unlimited moisture sensitivity). No regulatory or environmental restrictions apply to either part number.

Reverse Leakage Consideration: The RS3D-E3/57T specifies reverse leakage current at 200 V, whereas the RS3D-M3/9AT specifies it at 100 V. Both maintain the same 10 µA leakage specification, with the RS3D-E3/57T measurement conducted at the higher voltage threshold, indicating equivalent or superior leakage performance.

Packaging and Mounting: Both parts use identical DO-214AB (SMC) surface mount packaging, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can RS3D-E3/57T be used as a direct replacement for RS3D-M3/9AT in existing designs?

A: Yes. The RS3D-E3/57T is a parametric equivalent with identical voltage rating (200 V), current rating (3 A), forward voltage drop (1.3 V @ 2.5 A), recovery time (150 ns), and package (DO-214AB SMC). No circuit modifications are required.

Q: What is the difference between the two part numbers?

A: Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications. The part numbers reflect different manufacturing batches or tape reel configurations. The RS3D-E3/57T has higher current inventory availability.

Q: Are there any temperature or environmental differences between these parts?

A: No. Both parts operate across the same junction temperature range (-55°C to 150°C), maintain identical MSL Level 1 rating, and are ROHS3 compliant with REACH unaffected status.

Q: Does the reverse leakage specification difference affect substitution?

A: No. The RS3D-M3/9AT specifies 10 µA leakage at 100 V, while RS3D-E3/57T specifies 10 µA at 200 V. The higher voltage measurement threshold for RS3D-E3/57T indicates equivalent or superior leakage performance and does not restrict substitution.

Q: Can these diodes be used interchangeably in high-frequency switching applications?

A: Yes. Both parts maintain identical fast recovery characteristics with 150 ns reverse recovery time and meet the fast recovery classification (≤ 500ns, > 200mA). Switching performance is equivalent.

Q: What packaging format is used for both parts?

A: Both RS3D-M3/9AT and RS3D-E3/57T use DO-214AB (SMC) surface mount packaging supplied on tape and reel (TR). This packaging is standard for automated PCB assembly processes.

Q: Are there any supply chain or lead time considerations?

A: RS3D-E3/57T maintains significantly higher inventory (15,200 pieces) compared to RS3D-M3/9AT (811 pieces), making it a preferred choice for applications requiring extended supply availability or bulk procurement.