SA2B-E3/5AT Equivalent & Substitute Parts

Part Overview

The SA2B-E3/5AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 100 V DC reverse voltage with a 2 A average rectified current rating in a DO-214AC (SMA) package. The part is classified as Active product status with standard recovery characteristics and is RoHS3 compliant.

Equivalent and substitute parts are identified to address inventory availability, supply chain continuity, and design flexibility while maintaining electrical and mechanical compatibility within the specified parameter ranges for this diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	3	µA @ 100 V
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 SA2B-E3/5AT are grouped based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AC (SMA) surface mount
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Parametric Equivalent: SA2B-E3/61T matches all electrical specifications and packaging requirements with identical voltage, current, and thermal characteristics.

Direct Manufacturer Equivalents: STPS2H100A (STMicroelectronics) provides equivalent voltage and current ratings in the same package. This part uses Schottky technology, resulting in lower forward voltage (790 mV vs. 1.1 V) and faster recovery characteristics.

Manufacturer Recommended Alternatives: ES2B-LTP, ES2BA-13-F, S1B-13-F, and US1B-13-F are listed as manufacturer-recommended substitutes. These parts maintain the 100 V voltage rating and DO-214AC package but vary in current rating and recovery characteristics.

Limited Substitution: US1J-13-F operates at 600 V reverse voltage with 1 A current rating. This part is electrically compatible for 100 V applications but is rated for lower current (1 A vs. 2 A) and higher voltage, making it suitable only for applications where the 2 A current requirement can be reduced.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs/ns]	Package	Technology	Product Status
SA2B-E3/5AT	Vishay	100	2	1.1 @ 2 A	1.5 µs	DO-214AC (SMA)	Standard	Active
SA2B-E3/61T	Vishay	100	2	1.1 @ 2 A	1.5 µs	DO-214AC (SMA)	Standard	Active
STPS2H100A	STMicroelectronics	100	2	0.79 @ 2 A	≤500 ns	DO-214AC (SMA)	Schottky	Active
ES2B-LTP	Micro Commercial Co	100	2	0.95 @ 2 A	35 ns	DO-214AC (SMA)	Standard	Not For New Designs
ES2BA-13-F	Diodes Incorporated	100	2	0.92 @ 2 A	25 ns	DO-214AC (SMA)	Standard	Active
S1B-13-F	Diodes Incorporated	100	1	1.1 @ 1 A	3 µs	DO-214AC (SMA)	Standard	Active
US1B-13-F	Diodes Incorporated	100	1	1.0 @ 1 A	50 ns	DO-214AC (SMA)	Standard	Active
US1J-13-F	Diodes Incorporated	600	1	1.7 @ 1 A	75 ns	DO-214AC (SMA)	Standard	Active

Engineering Selection Recommendations

Full Electrical and Mechanical Equivalents:

SA2B-E3/61T is the direct parametric equivalent to SA2B-E3/5AT. Both parts are manufactured by Vishay, share identical electrical specifications (100 V, 2 A, 1.1 V forward voltage, 1.5 µs recovery time), and are packaged in DO-214AC (SMA). Both maintain Active product status and ROHS3 compliance. This part is suitable for direct substitution without circuit redesign.

Recommended Active Alternatives:

ES2BA-13-F (Diodes Incorporated) maintains the 100 V / 2 A rating with improved recovery characteristics (25 ns vs. 1.5 µs) and lower forward voltage (0.92 V vs. 1.1 V). Product status is Active with ROHS3 compliance. This part is suitable for applications where faster switching performance is beneficial.

STPS2H100A (STMicroelectronics) provides 100 V / 2 A performance using Schottky technology, delivering significantly lower forward voltage (0.79 V) and faster recovery (≤500 ns). This part is Active and ROHS3 compliant. Selection is appropriate for applications prioritizing reduced power dissipation.

Limited Substitution Options:

ES2B-LTP (Micro Commercial Co) meets the 100 V / 2 A electrical requirements but carries "Not For New Designs" product status. This part is suitable only for legacy system maintenance or repair applications where supply continuity is critical.

S1B-13-F and US1B-13-F (Diodes Incorporated) are rated for 1 A current, half the SA2B-E3/5AT specification. These parts are suitable only for applications where the circuit current requirement does not exceed 1 A. Both are Active with ROHS3 compliance.

US1J-13-F (Diodes Incorporated) operates at 600 V reverse voltage with 1 A current rating. This part is suitable only for applications where both the voltage and current requirements are reduced from the original specification.

Frequently Asked Questions (FAQ)

Q: Can SA2B-E3/61T be used as a direct replacement for SA2B-E3/5AT?

A: Yes. SA2B-E3/61T is a parametric equivalent with identical electrical specifications (100 V, 2 A, 1.1 V forward voltage, 1.5 µs recovery time), the same DO-214AC (SMA) package, and equivalent thermal operating range (-55°C to 150°C). Both parts are Active and ROHS3 compliant. No circuit modifications are required.

Q: What is the difference between the SA2B-E3/5AT and STPS2H100A?

A: Both parts operate at 100 V and 2 A with DO-214AC (SMA) packaging. The primary differences are technology and performance characteristics. SA2B-E3/5AT uses standard recovery diode technology with 1.1 V forward voltage and 1.5 µs recovery time. STPS2H100A uses Schottky technology with 0.79 V forward voltage and ≤500 ns recovery time. The Schottky variant reduces power dissipation and switching losses but may require circuit evaluation for compatibility with specific applications.

Q: Can ES2BA-13-F replace SA2B-E3/5AT in all applications?

A: ES2BA-13-F maintains the 100 V / 2 A electrical rating and DO-214AC (SMA) package. It provides improved recovery characteristics (25 ns vs. 1.5 µs) and lower forward voltage (0.92 V vs. 1.1 V). The part is Active and ROHS3 compliant. Substitution is suitable for applications where faster switching and reduced power dissipation are compatible with circuit design.

Q: Why are S1B-13-F and US1B-13-F listed as substitutes if they are rated for only 1 A?

A: These parts are listed as manufacturer-recommended alternatives for applications where the circuit current requirement does not exceed 1 A. They maintain the 100 V voltage rating and DO-214AC (SMA) package. Selection of these parts requires verification that the application current does not exceed 1 A average rectified current.

Q: Is US1J-13-F suitable for the SA2B-E3/5AT application?

A: US1J-13-F is rated for 600 V reverse voltage and 1 A current. This part is electrically compatible for 100 V applications but is rated for lower current (1 A vs. 2 A). Selection requires verification that the application current does not exceed 1 A and that the higher voltage rating does not introduce unintended circuit behavior.

Q: What does "Not For New Designs" mean for ES2B-LTP?

A: "Not For New Designs" indicates that the manufacturer has designated this part for legacy applications and maintenance only. New circuit designs should not incorporate ES2B-LTP. This part is suitable only for repair or replacement of existing systems where supply continuity is required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference—SA2B-E3/5AT, SA2B-E3/61T, STPS2H100A, ES2B-LTP, ES2BA-13-F, S1B-13-F, US1B-13-F, and US1J-13-F—are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited).

Q: What is the difference between DO-214AC and SMA packaging?

A: DO-214AC and SMA refer to the same surface mount package designation. Both terms describe the same physical form factor used for these diodes. All parts in this reference use this identical package, ensuring mechanical compatibility for PCB assembly.

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