Equivalent & Substitute Parts for S2B-HF

Part Overview

The S2B-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 100 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain alternatives, or inventory optimization while maintaining circuit performance specifications.

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
Speed	Standard Recovery >500ns, > 200mA (Io)	—
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the S2B-HF are qualified based on the following critical parameters that determine functional equivalence:

Electrical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A
Speed Classification: Standard Recovery >500ns, > 200mA (Io)
Operating Temperature - Junction: -55°C to 150°C

Mechanical Parameters (Must Match):

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

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant

The substitute parts SA2B-E3/5AT and SA2B-E3/61T, both manufactured by Vishay General Semiconductor - Diodes Division, satisfy all critical electrical and mechanical parameters. Both parts are classified as Active product status and maintain ROHS3 compliance.

Parameter Comparison

Parameter	S2B-HF (Comchip)	SA2B-E3/5AT (Vishay)	SA2B-E3/61T (Vishay)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A	1.1 V @ 2 A	1.1 V @ 2 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 100 V	3 µA @ 100 V	3 µA @ 100 V
Capacitance @ Vr, F	25 pF @ 4V, 1MHz	11 pF @ 4V, 1MHz	11 pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both SA2B-E3/5AT and SA2B-E3/61T are direct parametric equivalents to the S2B-HF for applications requiring a 100 V, 2 A general-purpose rectifier diode in DO-214AC surface mount packaging. Selection between these substitute parts and the original S2B-HF is based on:

Product Availability: SA2B-E3/61T maintains higher inventory levels (30,200 pcs) compared to SA2B-E3/5AT (8,343 pcs) and S2B-HF (882 pcs), supporting supply chain continuity.

Compliance Status: All three parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment for current and future applications.

Electrical Performance: The Vishay substitute parts demonstrate equivalent or superior electrical characteristics, including lower reverse leakage current (3 µA versus 5 µA) and reduced junction capacitance (11 pF versus 25 pF), which may provide marginal performance benefits in high-frequency or low-leakage applications.

Mechanical Compatibility: Identical DO-214AC package and surface mount configuration ensure direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can SA2B-E3/5AT or SA2B-E3/61T be used as direct replacements for S2B-HF without circuit redesign?

A: Yes. Both substitute parts meet all critical electrical parameters (100 V reverse voltage, 2 A average rectified current, 1.1 V forward voltage at 2 A) and share identical DO-214AC surface mount packaging. Direct PCB substitution is supported without circuit modification.

Q: What is the difference between SA2B-E3/5AT and SA2B-E3/61T?

A: Both parts are electrically and mechanically identical. The difference is in packaging designation (5AT versus 61T tape reel configuration) and inventory availability. SA2B-E3/61T has significantly higher stock levels (30,200 pcs versus 8,343 pcs).

Q: Are there performance differences between the S2B-HF and the Vishay substitutes?

A: The Vishay parts exhibit lower reverse leakage current (3 µA at 100 V versus 5 µA) and lower junction capacitance (11 pF versus 25 pF at 4 V, 1 MHz). These differences represent improved performance characteristics and do not create compatibility issues.

Q: Do all three parts meet the same compliance requirements?

A: Yes. S2B-HF, SA2B-E3/5AT, and SA2B-E3/61T are all ROHS3 compliant and classified as Active product status. All parts carry EAR99 ECCN classification and identical HTSUS codes (8541.10.0080).

Q: What is the operating temperature range for these diodes?

A: All three parts operate across a junction temperature range of -55°C to 150°C, supporting industrial and commercial temperature environments.

Q: Are these parts suitable for high-frequency applications?

A: These are standard recovery rectifier diodes with recovery times exceeding 500 ns at currents greater than 200 mA. They are classified for general-purpose rectification. Applications requiring fast recovery characteristics should specify fast or ultrafast recovery diode categories.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message