Equivalent & Substitute Parts for RS2AA-13

Part Overview

The RS2AA-13 is a general-purpose rectifier diode manufactured by Diodes Incorporated, rated for 50 V DC reverse voltage and 1.5 A average rectified current in a surface mount SMA package (DO-214AC). This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-65°C ~ 150°C
Technology	Standard

Substitute Part Grouping Explanation

Substitution of the RS2AA-13 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) rating must equal or exceed 50 V
Current - Average Rectified (Io) must equal or exceed 1.5 A
Voltage - Forward (Vf) characteristics must be compatible with circuit design
Reverse Recovery Time (trr) must support fast recovery operation
Reverse Leakage Current must remain within acceptable limits

Mechanical Compatibility Requirements:

Mounting Type: Surface Mount
Package / Case: DO-214AC (SMA) or equivalent footprint-compatible packages
Operating Temperature Range: Must support -65°C to 150°C minimum

Compliance Requirements:

RoHS Status: ROHS3 Compliant preferred for new designs
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts are grouped into two categories: parametric equivalents (identical electrical specifications, same package) and manufacturer-recommended alternatives (equivalent electrical performance, potentially different package or technology).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	trr	Package	Technology	Product Status	RoHS Status
RS2AA-13	Diodes Incorporated	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-214AC, SMA	Standard	Discontinued	RoHS non-compliant
RS2AA-13-F	Diodes Incorporated	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-214AC, SMA	Standard	Active	ROHS3 Compliant
RS2A-13-F	Diodes Incorporated	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-214AC, SMA	Standard	Active	ROHS3 Compliant
RS2G-M3/52T	Vishay General Semiconductor	50 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-214AA, SMB	Standard	Active	ROHS3 Compliant
RGF1A	Fairchild Semiconductor	50 V	1 A	1.3 V @ 1 A	150 ns	DO-214AC, SMA	Standard	Active	Not specified
RS1A	Taiwan Semiconductor Corporation	50 V	1 A	1.3 V @ 1 A	150 ns	DO-214AC, SMA	Standard	Active	ROHS3 Compliant
CMSH1-60 BK PBFREE	Central Semiconductor Corp	60 V	1 A	700 mV @ 1 A	≤ 500ns	DO-214AA, SMB	Schottky	Active	ROHS3 Compliant
CMSH1-60 TR13 PBFREE	Central Semiconductor Corp	60 V	1 A	700 mV @ 1 A	≤ 500ns	DO-214AA, SMB	Schottky	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended for Direct Replacement):

RS2AA-13-F and RS2A-13-F are parametric equivalents of the RS2AA-13, offering identical electrical specifications (50 V, 1.5 A, 150 ns recovery time) in the same DO-214AC SMA package. Both parts are manufactured by Diodes Incorporated and carry ROHS3 compliance, making them suitable for new designs and production continuity. RS2AA-13-F has higher inventory availability (25,100 pcs) compared to RS2A-13-F (6,300 pcs).

Package-Compatible Alternatives (Same Electrical Performance, Different Package):

RS2G-M3/52T (Vishay General Semiconductor) maintains identical electrical specifications but uses the DO-214AA SMB package instead of SMA. This part is ROHS3 compliant and suitable for applications where SMB footprint compatibility exists. Reverse leakage current and capacitance characteristics differ slightly but remain within acceptable operating parameters.

Current-Reduced Alternatives (Lower Current Rating):

RGF1A (Fairchild Semiconductor) and RS1A (Taiwan Semiconductor Corporation) are rated for 1 A average rectified current, which is lower than the RS2AA-13 specification of 1.5 A. These parts maintain 50 V reverse voltage rating and identical forward voltage characteristics. Selection of these parts is appropriate only when circuit design permits reduced current capacity. RS1A is ROHS3 compliant with higher inventory (22,800 pcs).

Schottky Technology Alternatives (Different Technology):

CMSH1-60 BK PBFREE and CMSH1-60 TR13 PBFREE (Central Semiconductor Corp) employ Schottky technology with 60 V reverse voltage rating and 1 A current rating. These parts feature lower forward voltage (700 mV @ 1 A) compared to standard rectifier diodes, resulting in reduced power dissipation. The SMB package differs from the original SMA package. Selection of Schottky alternatives is appropriate for applications requiring lower forward voltage drop and reduced thermal management requirements.

Frequently Asked Questions (FAQ)

Q: Can RS2AA-13-F be used as a direct replacement for RS2AA-13?

A: Yes. RS2AA-13-F is a parametric equivalent with identical electrical specifications (50 V, 1.5 A, 150 ns recovery time) and the same DO-214AC SMA package. The primary difference is ROHS3 compliance status and active product status, making it suitable for direct substitution in new designs and production continuity.

Q: What is the difference between RS2AA-13-F and RS2A-13-F?

A: Both parts are parametric equivalents manufactured by Diodes Incorporated with identical electrical specifications and package type. The designation difference reflects internal product line organization. Both are ROHS3 compliant and suitable for direct replacement. Selection between them depends on inventory availability and supplier preference.

Q: Can RS2G-M3/52T replace RS2AA-13 in existing designs?

A: RS2G-M3/52T maintains identical electrical specifications but uses the DO-214AA SMB package instead of DO-214AC SMA. Direct replacement requires PCB footprint compatibility with the SMB package. Electrical performance is equivalent, making it suitable for new designs or redesigns that accommodate the different package.

Q: Why are RGF1A and RS1A listed as alternatives if they have lower current ratings?

A: RGF1A and RS1A are rated for 1 A average rectified current, which is 0.5 A lower than the RS2AA-13 specification of 1.5 A. These parts maintain identical 50 V reverse voltage and forward voltage characteristics. They are suitable alternatives only for applications where circuit design permits reduced current capacity. Use of these parts in circuits requiring 1.5 A operation is not appropriate.

Q: What is the advantage of Schottky diodes (CMSH1-60 series) over standard rectifier diodes?

A: Schottky diodes feature lower forward voltage drop (700 mV @ 1 A) compared to standard rectifier diodes (1.3 V @ 1.5 A for RS2AA-13). This results in reduced power dissipation and lower junction temperature during operation. However, Schottky diodes have higher reverse leakage current (500 µA @ 60 V versus 5 µA @ 50 V). Selection of Schottky alternatives is appropriate for applications prioritizing efficiency and thermal management over leakage current characteristics.

Q: Are there package compatibility considerations when selecting substitutes?

A: Yes. The RS2AA-13 uses the DO-214AC SMA package. RS2AA-13-F and RS2A-13-F maintain this package, enabling direct PCB substitution. RS2G-M3/52T uses the DO-214AA SMB package, which has different footprint dimensions and requires PCB redesign or compatibility verification. CMSH1-60 series parts also use SMB packages. Verify PCB footprint compatibility before selecting package-different alternatives.

Q: What does ROHS3 compliance mean for component selection?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting use of lead, cadmium, mercury, and other hazardous materials. RS2AA-13 is RoHS non-compliant, while RS2AA-13-F, RS2A-13-F, RS2G-M3/52T, RS1A, and CMSH1-60 series are ROHS3 compliant. For new designs and applications subject to environmental regulations, ROHS3 compliant alternatives are required.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions and does not require special handling, storage, or baking procedures prior to soldering. All listed substitute parts carry MSL 1 rating, ensuring compatibility with standard manufacturing and storage practices.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message