S2BHM4G Equivalent & Substitute Parts

Part Overview

The S2BHM4G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The part carries automotive-grade qualification (AEC-Q101) and is ROHS3 compliant.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15	V @ 2 A
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	1	µA @ 100 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the S2BHM4G is determined by the following critical parameters: voltage rating (100 V minimum), current rating (2 A minimum), package type (DO-214AA/SMB preferred for direct mechanical compatibility), forward voltage characteristics, and recovery time classification. Parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications across all key parameters, including voltage, current, forward voltage, recovery time, and reverse leakage characteristics. These parts are direct functional replacements with no performance trade-offs.

Similar Parts share the same voltage and current ratings but differ in one or more secondary parameters such as recovery speed classification, forward voltage magnitude, reverse leakage current, or package variant (SMA vs. SMB). These parts are functionally compatible but require design verification for specific application requirements.

Parts with lower current ratings (1.5 A) are classified as similar due to reduced current capacity. Parts with higher current ratings (3 A) are classified as similar due to increased specifications beyond the original requirement.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	trr [µs]	Ir @ Vr [µA]	Package	Product Status	Grade
S2BHM4G	Taiwan Semiconductor Corporation	100	2	1.15 @ 2A	1.5	1 @ 100V	DO-214AA (SMB)	Discontinued	Automotive
S2BH	Taiwan Semiconductor Corporation	100	2	1.15 @ 2A	1.5	1 @ 100V	DO-214AA (SMB)	Active	Automotive
S2B	Diotec Semiconductor	100	2	1.15 @ 2A	1.5	5 @ 100V	DO-214AA (SMB)	Active	—
CGRB202-G	Comchip Technology	100	2	1.1 @ 2A	≤0.5	5 @ 100V	DO-214AA (SMB)	Active	—
ES2B-13-F	Diodes Incorporated	100	2	0.92 @ 2A	0.025	5 @ 100V	DO-214AA (SMB)	Active	—
ES2BA-13-F	Diodes Incorporated	100	2	0.92 @ 2A	0.025	5 @ 100V	DO-214AC (SMA)	Active	—
RS2B-13-F	Diodes Incorporated	100	1.5	1.3 @ 1.5A	0.15	5 @ 100V	DO-214AA (SMB)	Active	—
RS2BA-13-F	Diodes Incorporated	100	1.5	1.3 @ 1.5A	0.15	5 @ 100V	DO-214AC (SMA)	Active	—
S2B-13-F	Diodes Incorporated	100	1.5	1.15 @ 1.5A	>0.5	5 @ 100V	DO-214AA (SMB)	Active	—
S2BA-13-F	Diodes Incorporated	100	1.5	1.15 @ 1.5A	>0.5	5 @ 100V	DO-214AC (SMA)	Active	—
S3BB	Diodes Incorporated	100	3	1.15 @ 3A	2	10 @ 100V	DO-214AA (SMB)	Obsolete	—

Engineering Selection Recommendations

Primary Recommendation: S2BH

The S2BH from Taiwan Semiconductor Corporation is the optimal substitute for the S2BHM4G. This part maintains identical electrical specifications across all critical parameters: 100 V reverse voltage, 2 A average rectified current, 1.15 V forward voltage at 2 A, 1.5 µs reverse recovery time, and 1 µA reverse leakage current at 100 V. The S2BH is packaged in DO-214AA (SMB) format, providing direct mechanical compatibility. The part carries automotive-grade qualification (AEC-Q101) and ROHS3 compliance, matching the original specification. Product status is active, ensuring long-term availability. This part is suitable for direct replacement without design modification.

Secondary Recommendation: S2B (Diotec Semiconductor)

The S2B from Diotec Semiconductor provides parametric equivalence in voltage, current, forward voltage, and recovery time. Reverse leakage current is specified at 5 µA at 100 V, compared to 1 µA for the original part. This represents a five-fold increase in leakage but remains within acceptable limits for general-purpose rectification applications. The part is packaged in DO-214AA (SMB) and is currently active. This part is suitable for applications where the increased leakage current does not impact circuit performance.

Tertiary Recommendation: CGRB202-G (Comchip Technology)

The CGRB202-G maintains 100 V reverse voltage and 2 A current rating with slightly lower forward voltage (1.1 V at 2 A). Recovery speed is classified as fast (≤500 ns), compared to standard recovery (>500 ns) for the original part. Reverse leakage is 5 µA at 100 V. The part is packaged in DO-214AA (SMB) with Tape & Reel packaging and is currently active. This part is suitable for applications where faster recovery characteristics provide performance benefits.

Alternative Recommendation: ES2B-13-F (Diodes Incorporated)

The ES2B-13-F maintains 100 V reverse voltage and 2 A current rating with superior forward voltage performance (0.92 V at 2 A) and significantly faster recovery time (25 ns). Reverse leakage is 5 µA at 100 V. The part is packaged in DO-214AA (SMB) and is currently active. This part is suitable for applications requiring improved efficiency and faster switching characteristics.

Package Variant Consideration: SMA Package Options

Parts designated with suffix "-13-F" and base designation "BA" (ES2BA-13-F, RS2BA-13-F, S2BA-13-F) are available in DO-214AC (SMA) package format. These parts provide electrical equivalence to their SMB counterparts but require PCB layout modification due to different package geometry. SMA packages are smaller than SMB packages and are suitable for space-constrained applications.

Not Recommended: RS2B-13-F, RS2BA-13-F, S2B-13-F, S2BA-13-F

These parts are rated for 1.5 A average rectified current, which is below the 2 A specification of the original S2BHM4G. These parts are suitable only for applications where the circuit design can accommodate reduced current capacity.

Not Recommended: S3BB

This part is rated for 3 A average rectified current and carries obsolete product status. While the higher current rating provides design margin, the obsolete status limits long-term procurement viability.

Frequently Asked Questions (FAQ)

Q: Can the S2BH be used as a direct replacement for the S2BHM4G without PCB modification?

A: Yes. The S2BH is electrically and mechanically identical to the S2BHM4G. Both parts are packaged in DO-214AA (SMB) format with identical pin configuration and footprint. No PCB modification is required.

Q: What is the significance of the difference in reverse leakage current between the S2BHM4G (1 µA) and substitute parts like S2B (5 µA)?

A: Reverse leakage current represents the small current that flows through the diode in the reverse-biased state. The S2BHM4G specifies 1 µA at 100 V, while many substitute parts specify 5 µA. This difference is typically negligible in most rectification applications. The impact depends on circuit sensitivity to leakage current. High-impedance circuits or precision analog applications may require verification.

Q: Why do some substitute parts have faster recovery times than the original S2BHM4G?

A: Recovery time classification reflects the speed at which the diode transitions from conducting to blocking state. The S2BHM4G is classified as standard recovery (>500 ns), while parts like ES2B-13-F are classified as fast recovery (≤500 ns). Faster recovery reduces switching losses and improves efficiency in high-frequency applications. For low-frequency rectification, this difference has minimal impact.

Q: Can I use the ES2BA-13-F (SMA package) instead of the S2BHM4G (SMB package)?

A: Electrical substitution is possible, but mechanical substitution requires PCB layout modification. The SMA package is smaller than the SMB package and has different footprint dimensions. The ES2BA-13-F provides superior electrical performance (lower forward voltage, faster recovery) but requires design verification and PCB redesign.

Q: What does "Automotive Grade" and "AEC-Q101" qualification mean?

A: Automotive Grade indicates the part is designed and tested to meet automotive industry standards. AEC-Q101 is the Automotive Electronics Council qualification standard for discrete semiconductors. This qualification ensures the part meets stringent reliability, temperature cycling, and quality requirements for automotive applications. The S2BH maintains this qualification, while many substitute parts do not explicitly state automotive qualification.

Q: Is the S2B from Diotec Semiconductor suitable for automotive applications?

A: The S2B from Diotec Semiconductor does not carry explicit automotive-grade designation or AEC-Q101 qualification in the provided specifications. For applications requiring automotive qualification, the S2BH is the recommended choice. For non-automotive applications, the S2B is suitable.

Q: Why is the S3BB listed as obsolete?

A: The S3BB carries obsolete product status, indicating it is no longer manufactured or supported by the supplier. While inventory may be available from secondary sources, long-term procurement cannot be assured. For new designs or long-term production, active parts such as S2BH or ES2B-13-F are recommended.

Q: What is the difference between "Standard Recovery" and "Fast Recovery" diodes?

A: Standard Recovery diodes have reverse recovery times greater than 500 ns, while Fast Recovery diodes have reverse recovery times of 500 ns or less. Fast Recovery diodes are optimized for high-frequency switching applications and exhibit lower switching losses. Standard Recovery diodes are suitable for low-frequency rectification and power supply applications. The choice depends on circuit operating frequency and efficiency requirements.

Q: Can I substitute a 1.5 A rated diode (RS2B-13-F) for the 2 A rated S2BHM4G?

A: Substitution is possible only if the circuit design can operate reliably at the reduced current capacity. The 1.5 A rating represents the maximum average rectified current the part can safely handle. If the circuit requires 2 A operation, a 1.5 A rated part will exceed its rating and may fail. For applications operating below 1.5 A, substitution is acceptable.

Q: What is the significance of the "Tape & Reel" and "Cut Tape & Digi-Reel" packaging designations?

A: These designations describe the physical packaging format for component delivery. Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for automated assembly. Cut Tape (CT) & Digi-Reel packaging supplies components on cut tape segments, suitable for manual assembly or small-volume production. Both formats contain identical components; the difference is in delivery and handling format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message