ES2B M4G Equivalent & Substitute Parts

Part Overview

The ES2B M4G 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 DO-214AA (SMB) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing production and repair applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with minor parameter variations within acceptable operating ranges.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 2 A
Reverse Recovery Time (trr)	35 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Capacitance @ Vr, F	25 pF @ 4 V, 1 MHz
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
Technology	Standard
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the ES2B M4G is determined by the following critical parameters:

Electrical Specifications:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-214AA (SMB) or compatible surface mount package
Operating Temperature - Junction: -55°C to 150°C minimum range

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical ratings (100 V, 2 A) and the same DO-214AA package, differing only in manufacturer or packaging format (Tape & Reel vs. Cut Tape).

Similar Parts: Components with the same voltage and current ratings but minor variations in forward voltage, reverse recovery time, or reverse leakage current. These parts function within the same application envelope but may exhibit different thermal or switching characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr (ns)	Ir @ Vr	Package	Product Status
ES2B M4G	Taiwan Semiconductor Corporation	100 V	2 A	950 mV @ 2 A	35	10 µA @ 100 V	DO-214AA (SMB)	Discontinued at DiGi Electronics
ES2B	YAGEO	100 V	2 A	950 mV @ 2 A	—	—	DO-214AA (SMB)	Active
ES2B R5G	Taiwan Semiconductor Corporation	100 V	2 A	950 mV @ 2 A	35	10 µA @ 100 V	DO-214AA (SMB)	Discontinued at DiGi Electronics
ES2BH	Taiwan Semiconductor Corporation	100 V	2 A	950 mV @ 2 A	35	10 µA @ 100 V	DO-214AA (SMB)	Active
CGRB202-G	Comchip Technology	100 V	2 A	1.1 V @ 2 A	—	5 µA @ 100 V	DO-214AA (SMB)	Active
CSFB202-G	Comchip Technology	100 V	2 A	920 mV @ 2 A	35	5 µA @ 100 V	DO-214AA (SMB)	Active
ER1B-LTP	Micro Commercial Co	100 V	1 A	950 mV @ 1 A	35	5 µA @ 100 V	DO-214AA (SMB)	Not For New Designs
ES2B-13-F	Diodes Incorporated	100 V	2 A	920 mV @ 2 A	25	5 µA @ 100 V	DO-214AA (SMB)	Active
ES2BA-13-F	Diodes Incorporated	100 V	2 A	920 mV @ 2 A	25	5 µA @ 100 V	DO-214AC (SMA)	Active
ES2BHE3_A/H	Vishay General Semiconductor - Diodes Division	100 V	2 A	900 mV @ 2 A	20	10 µA @ 50 V	DO-214AA (SMB)	Active
ES2BHE3_A/I	Vishay General Semiconductor - Diodes Division	100 V	2 A	900 mV @ 2 A	20	10 µA @ 50 V	DO-214AA (SMB)	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacement):

The ES2B from YAGEO and ES2B R5G from Taiwan Semiconductor Corporation are parametric equivalents to the ES2B M4G. Both maintain 100 V reverse voltage, 2 A rectified current, and DO-214AA package specifications. The ES2B R5G is a variant of the original manufacturer with identical electrical characteristics. The YAGEO ES2B is currently active with substantial inventory availability (55,400 pcs), making it the primary direct replacement option.

Automotive-Grade Alternatives:

The ES2BH from Taiwan Semiconductor Corporation and ES2BHE3_A/H and ES2BHE3_A/I from Vishay are automotive-qualified variants (AEC-Q101) with identical voltage and current ratings. These parts are suitable for applications requiring automotive-grade reliability and are currently in active production status. The Vishay variants feature improved reverse recovery time (20 ns vs. 35 ns) and lower forward voltage (900 mV vs. 950 mV), resulting in reduced power dissipation.

Alternative Manufacturers:

CSFB202-G from Comchip Technology provides a functionally equivalent 100 V, 2 A rectifier in DO-214AA package with 920 mV forward voltage and 35 ns reverse recovery time. This part is active and available with 1,168 pcs in inventory.

ES2B-13-F from Diodes Incorporated is a 100 V, 2 A rectifier in DO-214AA (SMB) package with 920 mV forward voltage and 25 ns reverse recovery time, currently active with 2,163 pcs available.

Package Variant:

ES2BA-13-F from Diodes Incorporated is electrically equivalent to ES2B-13-F but uses a DO-214AC (SMA) package instead of DO-214AA (SMB). This part is suitable only if the circuit board layout accommodates the SMA footprint. It is currently active with 34,605 pcs in inventory.

Not Recommended:

ER1B-LTP from Micro Commercial Co is rated for 1 A average rectified current, which is insufficient for 2 A applications. This part is marked "Not For New Designs" and should not be selected for new applications.

CGRB202-G from Comchip Technology exhibits higher forward voltage (1.1 V @ 2 A) compared to the ES2B M4G (950 mV @ 2 A), resulting in increased power dissipation and thermal stress. This part is suitable only for applications with relaxed thermal constraints.

Frequently Asked Questions (FAQ)

Q: Can ES2B from YAGEO be used as a direct replacement for ES2B M4G?

A: Yes. The YAGEO ES2B maintains identical electrical specifications (100 V, 2 A, 950 mV forward voltage) and the same DO-214AA package. The primary difference is packaging format (Tape & Reel vs. standard packaging). Electrical performance is equivalent.

Q: What is the difference between ES2BH and ES2B M4G?

A: ES2BH is an automotive-qualified variant (AEC-Q101) of the ES2B series with identical electrical ratings. Both are rated for 100 V, 2 A, and feature 35 ns reverse recovery time. ES2BH is currently in active production, whereas ES2B M4G is discontinued.

Q: Can ES2BA-13-F replace ES2B M4G in existing designs?

A: ES2BA-13-F is electrically equivalent but uses a different package (DO-214AC SMA vs. DO-214AA SMB). Direct substitution requires circuit board redesign to accommodate the SMA footprint. The part is not a drop-in replacement.

Q: Why do some substitute parts have lower forward voltage?

A: Forward voltage variation (900 mV to 950 mV @ 2 A) is within normal manufacturing tolerance for rectifier diodes. Lower forward voltage results in reduced power dissipation and improved efficiency. Parts with lower forward voltage are generally preferred in power-sensitive applications.

Q: Is CGRB202-G suitable for high-current applications?

A: CGRB202-G is rated for 2 A average rectified current, matching the ES2B M4G specification. However, its higher forward voltage (1.1 V vs. 950 mV) generates approximately 15% more heat at rated current. Selection depends on thermal design margins in the application.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts bearing this qualification (ES2BH, ES2BHE3_A/H, ES2BHE3_A/I) have undergone rigorous reliability testing and are suitable for automotive and high-reliability applications.

Q: Can ER1B-LTP be used if the application only requires 1 A?

A: ER1B-LTP is rated for 1 A average rectified current and is marked "Not For New Designs." Although it meets the 1 A requirement, its discontinued status and design restriction make it unsuitable for new applications. ES2B-series parts rated for 2 A provide better design margin and are actively produced.

Q: What is the significance of reverse recovery time (trr)?

A: Reverse recovery time affects switching speed and efficiency in high-frequency applications. The ES2B M4G has 35 ns trr. Vishay ES2BHE3 variants feature 20 ns trr, enabling faster switching with reduced switching losses. For low-frequency rectification, trr differences are negligible.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), matching the ES2B M4G environmental specifications.

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