Equivalent & Substitute Parts for S2A-13 General Purpose Rectifier Diode

Part Overview

The S2A-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 SMB (DO-214AA) package. This component is classified as discontinued at DiGi Electronics, which necessitates identification of equivalent and substitute parts for ongoing design and procurement requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and compliance variations.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.15	V @ 1.5 A
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Capacitance @ Vr, F	20	pF @ 4V, 1MHz
Operating Temperature - Junction	-65 to 150	°C
Package / Case	DO-214AA, SMB	Surface Mount
Speed Classification	Standard Recovery >500ns	> 200mA (Io)

Substitute Part Grouping Explanation

Substitute parts for the S2A-13 are qualified based on the following electrical and mechanical parameters:

Primary Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V minimum
Current - Average Rectified (Io): 1.5 A minimum
Package / Case: DO-214AA, SMB (Surface Mount)
Mounting Type: Surface Mount
Current - Reverse Leakage @ Vr: 5 µA @ 50 V maximum

Secondary Compatibility Criteria:

Voltage - Forward (Vf) (Max) @ If: 1.15 V to 1.3 V range acceptable
Operating Temperature - Junction: -55°C to 150°C minimum range
Capacitance @ Vr, F: 20 pF @ 4V, 1MHz

Substitute parts are grouped into two categories: direct manufacturer equivalents from Diodes Incorporated and cross-manufacturer alternatives that meet or exceed the electrical specifications of the S2A-13.

Parameter Comparison

Parameter	S2A-13 (Main)	S2A-13-F	RS2A-E3/5BT	S2A (Diotec)
Manufacturer	Diodes Incorporated	Diodes Incorporated	Vishay General Semiconductor	Diotec Semiconductor
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V
Current - Average Rectified (Io)	1.5 A	1.5 A	1.5 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 1.5 A	1.15 V @ 1.5 A	1.3 V @ 1.5 A	1.15 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V	5 µA @ 50 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	Not Specified
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	-65 to 150°C	-65 to 150°C	-55 to 150°C	-50 to 150°C
Speed Classification	Standard Recovery >500ns	Standard Recovery >500ns	Fast Recovery ≤500ns	Standard Recovery >500ns
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	RoHS Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

S2A-13-F (Diodes Incorporated)

The S2A-13-F is the direct equivalent substitute for the S2A-13. Both parts are manufactured by Diodes Incorporated and share identical electrical specifications: 50 V reverse voltage, 1.5 A average rectified current, 1.15 V forward voltage drop, and standard recovery speed characteristics. The S2A-13-F is currently in active product status with 30,620 units in stock. The primary distinction is RoHS compliance: the S2A-13-F is ROHS3 compliant, whereas the S2A-13 is non-compliant. For applications requiring RoHS-compliant components, the S2A-13-F is the recommended direct replacement. Packaging is available in Cut Tape (CT) and Digi-Reel® formats.

RS2A-E3/5BT (Vishay General Semiconductor)

The RS2A-E3/5BT is a cross-manufacturer substitute manufactured by Vishay General Semiconductor. It meets the primary electrical compatibility criteria: 50 V reverse voltage, 1.5 A average rectified current, and DO-214AA SMB package. The RS2A-E3/5BT exhibits a higher forward voltage drop of 1.3 V at 1.5 A compared to the S2A-13's 1.15 V, and features fast recovery characteristics (≤500ns) versus the standard recovery (>500ns) of the S2A-13. The operating temperature range is -55°C to 150°C, which is narrower than the S2A-13's -65°C to 150°C. The RS2A-E3/5BT is ROHS3 compliant and available in Tape & Reel (TR) packaging with 3,866 units in stock.

S2A (Diotec Semiconductor)

The S2A manufactured by Diotec Semiconductor is a higher-current rated substitute with 2 A average rectified current capacity compared to the S2A-13's 1.5 A. All other electrical parameters align with the S2A-13: 50 V reverse voltage, 1.15 V forward voltage drop at 2 A, and standard recovery speed. The operating temperature range is -50°C to 150°C, which is narrower than the S2A-13. The S2A is ROHS3 compliant with 7,004 units in stock. This part is suitable for applications where higher current capacity provides design margin or where the narrower temperature range is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the S2A-13-F be used as a direct replacement for the S2A-13?

A: Yes. The S2A-13-F is electrically and mechanically identical to the S2A-13 across all specified parameters: 50 V reverse voltage, 1.5 A average rectified current, 1.15 V forward voltage drop, and DO-214AA SMB package. The S2A-13-F is currently in active production status, whereas the S2A-13 is discontinued. The primary difference is RoHS compliance status.

Q: What is the impact of the RS2A-E3/5BT's higher forward voltage drop?

A: The RS2A-E3/5BT exhibits 1.3 V forward voltage drop at 1.5 A, compared to 1.15 V for the S2A-13. This 0.15 V difference results in increased power dissipation in the diode. For a 1.5 A load, the additional power loss is approximately 0.225 W. Circuit designs must account for this increased thermal load if thermal management is critical.

Q: Is the RS2A-E3/5BT's fast recovery characteristic compatible with S2A-13 applications?

A: The RS2A-E3/5BT features fast recovery (≤500ns) while the S2A-13 is standard recovery (>500ns). Fast recovery diodes exhibit lower reverse recovery charge and are suitable for higher-frequency switching applications. In standard rectification circuits, the fast recovery characteristic does not create incompatibility; however, circuit behavior may differ in high-frequency or switching applications.

Q: Can the Diotec S2A be used in place of the S2A-13?

A: The Diotec S2A is electrically compatible for applications where the 1.5 A current rating of the S2A-13 is the design requirement. The Diotec S2A provides 2 A capacity, which offers design margin. However, the operating temperature range is narrower (-50°C to 150°C versus -65°C to 150°C). Applications requiring operation below -50°C must use the S2A-13, S2A-13-F, or RS2A-E3/5BT.

Q: What packaging formats are available for each substitute part?

A: The S2A-13-F is available in Cut Tape (CT) and Digi-Reel® packaging. The RS2A-E3/5BT is supplied in Tape & Reel (TR) format. The Diotec S2A packaging format is not specified in the provided data. All three parts use the DO-214AA SMB surface mount package.

Q: Are all substitute parts RoHS compliant?

A: The S2A-13-F, RS2A-E3/5BT, and Diotec S2A are all ROHS3 compliant. The original S2A-13 is RoHS non-compliant. For applications subject to RoHS requirements, any of the three substitute parts satisfy compliance requirements.

Q: What is the reverse recovery time specification for the S2A-13?

A: The S2A-13 is classified as standard recovery with recovery time >500ns at >200mA. The RS2A-E3/5BT specifies reverse recovery time of 150 ns. The Diotec S2A specifies reverse recovery time of 1.5 µs. These differences reflect the speed classification differences between the parts.

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