RS2BA Equivalent & Substitute Parts

Part Overview

The RS2BA 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 surface mount DO-214AC (SMA) package. This component 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 ratings.

The RS2BA maintains Active product status with 882 pieces in current inventory. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory management, or specific manufacturing preferences while maintaining electrical and mechanical compatibility within defined parameter ranges.

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 @ 1.5	V @ A
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5 @ 50	µA @ V
Capacitance @ Vr, F	50 @ 4V, 1MHz	pF
Package / Case	DO-214AC (SMA)	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the RS2BA are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 50 V reverse voltage rating, 1.5 A average rectified current, 1.3 V forward voltage drop at 1.5 A, 150 ns reverse recovery time, and identical package configuration (DO-214AC/SMA). These parts are direct functional replacements with no circuit redesign required.

Similar Parts share the same package type and mounting configuration but differ in one or more electrical ratings. The RS1B-E3/61T operates at 100 V reverse voltage with 1 A average rectified current, representing a higher voltage, lower current variant in the same physical package.

Substitution eligibility is determined by:

Identical or higher voltage rating (Vr)
Identical or higher current rating (Io)
Identical package and mounting type
Matching or superior reverse recovery time performance
Compliance with RoHS3 and REACH requirements

Parameter Comparison

Parameter	RS2BA	RS2AA R3G	RS2AAHR3G	RS1B-E3/61T
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	100 V
Current - Average Rectified (Io)	1.5 A	1.5 A	1.5 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1.5 A	1.3 V @ 1.5 A	1.3 V @ 1.5 A	1.3 V @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns	150 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 100 V
Capacitance @ Vr, F	50 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz
Package / Case	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AC (SMA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Product Status	Active	Discontinued at DiGi Electronics	Discontinued at DiGi Electronics	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Parametric Equivalents):

RS2AA R3G and RS2AAHR3G are parametric equivalents to the RS2BA, offering identical electrical specifications and package configuration. Both parts are manufactured by Taiwan Semiconductor Corporation and maintain full RoHS3 compliance. RS2AA R3G and RS2AAHR3G are listed as discontinued at DiGi Electronics; however, inventory availability is documented at 4318 and 6375 pieces respectively, supporting continued sourcing through alternative distribution channels.

For Higher Voltage Applications (Similar Part):

RS1B-E3/61T, manufactured by Vishay General Semiconductor - Diodes Division, operates at 100 V reverse voltage with 1 A average rectified current. This part is suitable for applications requiring higher voltage margin than the RS2BA's 50 V rating. The RS1B-E3/61T maintains identical package configuration (DO-214AC/SMA), identical reverse recovery time (150 ns), and Active product status. Current inventory is documented at 7839 pieces. This part is not a direct replacement due to reduced current rating (1 A versus 1.5 A) and must be evaluated for circuit compatibility.

Compliance Considerations:

All identified substitute parts maintain ROHS3 compliance, REACH Unaffected status, and identical operating temperature ranges (-55°C to 150°C junction temperature). Moisture sensitivity level is MSL 1 (Unlimited) for all parts, indicating no special handling requirements.

Frequently Asked Questions (FAQ)

Q: Can RS2AA R3G be used as a direct replacement for RS2BA?

A: Yes. RS2AA R3G is a parametric equivalent with identical voltage rating (50 V), current rating (1.5 A), forward voltage drop (1.3 V @ 1.5 A), reverse recovery time (150 ns), and package configuration (DO-214AC/SMA). No circuit modifications are required.

Q: What is the difference between RS2AAHR3G and RS2AA R3G?

A: Both parts are parametric equivalents to the RS2BA with identical electrical specifications and package type. The designation difference reflects manufacturing or packaging variants from Taiwan Semiconductor Corporation. Both maintain ROHS3 compliance and identical performance parameters.

Q: Can RS1B-E3/61T replace the RS2BA in all applications?

A: RS1B-E3/61T shares the same package type (DO-214AC/SMA) and reverse recovery time (150 ns) but differs in electrical ratings: 100 V reverse voltage (versus 50 V) and 1 A average rectified current (versus 1.5 A). This part is suitable only for applications where the reduced current rating (1 A maximum) is acceptable and the higher voltage rating provides design margin. Circuit evaluation is required.

Q: Why are some substitute parts listed as discontinued?

A: RS2AA R3G and RS2AAHR3G are marked as discontinued at DiGi Electronics, indicating removal from that distributor's active catalog. However, documented inventory levels (4318 and 6375 pieces respectively) confirm availability through alternative distribution channels. Product discontinuation at one distributor does not indicate unavailability from other sources.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. RS2BA, RS2AA R3G, RS2AAHR3G, and RS1B-E3/61T are all ROHS3 compliant with REACH Unaffected status, meeting current environmental and regulatory requirements.

Q: What is the significance of the DO-214AC (SMA) package for substitution?

A: The DO-214AC (SMA) package is a standardized surface mount package for small signal diodes. All identified substitute parts use this identical package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes without modification.

Q: How do reverse recovery time specifications affect substitution?

A: All identified substitute parts maintain 150 ns reverse recovery time, matching the RS2BA specification. This parameter determines switching speed in rectification circuits. Identical reverse recovery time ensures equivalent performance in fast recovery applications.

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