RS2AA M2G Equivalent & Substitute Parts

Part Overview

The RS2AA M2G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1.5 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The RS2AA M2G features fast recovery characteristics with a reverse recovery time of 150 ns, forward voltage of 1.3 V at 1.5 A, and operates across a junction temperature range of -55°C to 150°C. The component is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Key Parameters

Parameter	Value	Unit
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	V
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	µA
Capacitance @ Vr, F	50pF @ 4V, 1MHz	pF
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the RS2AA M2G is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

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
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount

Parametric Equivalent Parts maintain all critical electrical and mechanical parameters identical to the RS2AA M2G. These parts are direct functional replacements with no derating or circuit modification required.

Similar Parts share the same package and voltage rating but differ in current rating (1.0 A versus 1.5 A) or recovery characteristics. These parts are suitable only when circuit design permits operation at reduced current capacity or when recovery speed requirements are less stringent.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Package	Product Status
RS2AA M2G	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Discontinued at DiGi Electronics
RS2AA	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Active
RS2AA R3G	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Discontinued at DiGi Electronics
RS2AAH	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Active
RS2AAHR3G	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Discontinued at DiGi Electronics
RS2BA	Taiwan Semiconductor Corporation	50	1.5	1.3 @ 1.5 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Active
CFRA101-G	Comchip Technology	50	1.0	1.3 @ 1 A	Fast Recovery ≤ 500ns, > 200mA	150	DO-214AC, SMA	Active
CGRA4001-G	Comchip Technology	50	1.0	1.1 @ 1 A	Standard Recovery >500ns, > 200mA	—	DO-214AC, SMA	Active
ES1A-13-F	Diodes Incorporated	50	1.0	920 mV @ 1 A	Fast Recovery ≤ 500ns, > 200mA	25	DO-214AC, SMA	Active
ES1A-E3/5AT	Vishay General Semiconductor - Diodes Division	50	1.0	920 mV @ 1 A	Fast Recovery ≤ 500ns, > 200mA	25	DO-214AC, SMA	Active
ES1A-M3/5AT	Vishay General Semiconductor - Diodes Division	50	1.0	920 mV @ 1 A	Fast Recovery ≤ 500ns, > 200mA	25	DO-214AC, SMA	Active

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement):

The following parts are parametric equivalents to the RS2AA M2G and provide direct functional replacement:

RS2AA (Active status): Identical electrical and mechanical specifications. Recommended as primary replacement for discontinued RS2AA M2G.
RS2AAH (Active status): Identical electrical specifications with automotive-grade qualification (AEC-Q101). Suitable for applications requiring automotive-level reliability.
RS2BA (Active status): Identical electrical and mechanical specifications. Alternative from Taiwan Semiconductor Corporation product line.

All parametric equivalents maintain ROHS3 compliance, MSL 1 rating, and operating temperature range of -55°C to 150°C.

Similar Part Selection (Current-Reduced Alternatives):

The following parts share identical voltage rating and package but operate at reduced current capacity (1.0 A versus 1.5 A):

CFRA101-G (Comchip Technology, Active): Fast recovery characteristics (150 ns trr) with 1.0 A rating. Suitable when circuit design permits 33% current derating.
ES1A-13-F (Diodes Incorporated, Active): Fast recovery characteristics (25 ns trr) with 1.0 A rating and lower forward voltage (920 mV @ 1 A). Suitable for low-power applications.
ES1A-E3/5AT (Vishay, Active): Fast recovery characteristics (25 ns trr) with 1.0 A rating and lower forward voltage (920 mV @ 1 A). Operating temperature to 155°C.
ES1A-M3/5AT (Vishay, Active): Fast recovery characteristics (25 ns trr) with 1.0 A rating and lower forward voltage (920 mV @ 1 A).

Non-Recommended Alternative:

CGRA4001-G (Comchip Technology, Active): Standard recovery speed (>500 ns) differs from fast recovery requirement. Not suitable for applications requiring fast recovery characteristics.

Frequently Asked Questions (FAQ)

Q: Can RS2AA be used as a direct replacement for RS2AA M2G?

A: Yes. RS2AA is a parametric equivalent with identical electrical specifications (50 V, 1.5 A, 1.3 V forward voltage, 150 ns recovery time) and DO-214AC package. The primary difference is product status: RS2AA is active while RS2AA M2G is discontinued.

Q: What is the difference between RS2AAH and RS2AA?

A: RS2AAH maintains identical electrical and mechanical specifications to RS2AA but includes automotive-grade qualification (AEC-Q101). Selection between these parts depends on application requirements for automotive-level reliability and traceability.

Q: Can 1.0 A rated diodes replace the 1.5 A RS2AA M2G?

A: Substitution with 1.0 A rated parts (CFRA101-G, ES1A series) is permissible only when circuit design analysis confirms that average rectified current does not exceed 1.0 A. This represents a 33% current derating and requires circuit validation.

Q: What is the significance of recovery time differences between RS2AA M2G and ES1A series?

A: RS2AA M2G specifies 150 ns reverse recovery time, while ES1A series specifies 25 ns. The ES1A series exhibits faster recovery, which may alter circuit switching characteristics. Selection depends on whether the application circuit design is sensitive to recovery time specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All parametric equivalent and similar parts listed maintain ROHS3 compliance status, consistent with the RS2AA M2G specification.

Q: What packaging formats are available for these diodes?

A: All listed parts are supplied in DO-214AC (SMA) surface mount package. Tape & Reel (TR) packaging is standard for production quantities. The RS2AA M2G was supplied in individual packaging format, while active equivalents are available in Tape & Reel format.

Q: Is MSL rating consistent across all substitute parts?

A: Yes. All parametric equivalent and similar parts maintain MSL 1 (Unlimited) moisture sensitivity level, matching the RS2AA M2G specification.

Q: Can CGRA4001-G be used in place of RS2AA M2G?

A: CGRA4001-G is not recommended as a substitute. While it shares the same 50 V rating and DO-214AC package, it specifies standard recovery speed (>500 ns) rather than fast recovery (≤500 ns). This fundamental difference in recovery characteristics makes it unsuitable for applications designed around the fast recovery specification of RS2AA M2G.

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