ES3BHR7G Equivalent & Substitute Parts

Part Overview

The ES3BHR7G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This device is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The part features fast recovery characteristics with a reverse recovery time of 35 ns, forward voltage of 950 mV at 3 A, and automotive-grade qualification under AEC-Q101. The discontinuation status requires engineers to identify active alternative components that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 100 V
Capacitance @ Vr, F	45	pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES3BHR7G is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-214AB (SMC) or compatible surface mount package
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Mounting Type: Surface Mount

Secondary Compatibility Factors:

Forward voltage (Vf) at rated current
Reverse recovery time (trr)
Reverse leakage current
Operating temperature range
Compliance certifications (RoHS3, AEC-Q101 for automotive applications)

Substitute parts are grouped into two categories:

Parametric Equivalents: Parts with identical electrical specifications and the same package type (DO-214AB SMC), maintaining full pin-for-pin and functional compatibility.

Similar Parts: Components meeting the primary substitution criteria but with variations in secondary parameters such as forward voltage, reverse recovery time, or package variant (SMB vs. SMC). These parts are electrically compatible but require circuit-level verification for applications with tight forward voltage or switching speed requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Package	Status
ES3BHR7G	Taiwan Semiconductor	100	3	950 @ 3A	35	10 @ 100V	DO-214AB (SMC)	Discontinued
ES3B	Taiwan Semiconductor	100	3	950 @ 3A	35	10 @ 100V	DO-214AB (SMC)	Active
ES3BH	Taiwan Semiconductor	100	3	950 @ 3A	35	10 @ 100V	DO-214AB (SMC)	Active
CSFC302-G	Comchip Technology	100	3	950 @ 3A	35	5 @ 100V	DO-214AB (SMC)	Active
ES3B-13-F	Diodes Incorporated	100	3	900 @ 3A	25	10 @ 100V	DO-214AB (SMC)	Active
ES3BB-13-F	Diodes Incorporated	100	3	900 @ 3A	25	10 @ 100V	DO-214AA (SMB)	Active
ESH3BHE3_A/H	Vishay General Semiconductor	100	3	900 @ 3A	40	5 @ 100V	DO-214AB (SMC)	Active
ESH3BHE3_A/I	Vishay General Semiconductor	100	3	900 @ 3A	40	5 @ 100V	DO-214AB (SMC)	Active
RS3B-13-F	Diodes Incorporated	100	3	1300 @ 3A	150	5 @ 100V	DO-214AB (SMC)	Active
RS3BB-13-F	Diodes Incorporated	100	3	1300 @ 3A	150	5 @ 100V	DO-214AA (SMB)	Active
CGRC502-G	Comchip Technology	100	5	1150 @ 5A	—	10 @ 100V	DO-214AB (SMC)	Active

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalents):

ES3B and ES3BH from Taiwan Semiconductor Corporation are parametric equivalents to the discontinued ES3BHR7G. Both parts maintain identical electrical specifications, package configuration, and automotive-grade AEC-Q101 qualification. ES3B is the base product number with 10,400 units in stock, while ES3BH carries automotive qualification with 626 units available. These components provide direct substitution without circuit modification.

Primary Alternatives (DO-214AB SMC Package):

CSFC302-G (Comchip Technology), ES3B-13-F (Diodes Incorporated), ESH3BHE3_A/H, and ESH3BHE3_A/I (Vishay General Semiconductor) are active components in the DO-214AB (SMC) package meeting the 100 V / 3 A electrical requirements. These parts differ in forward voltage and reverse recovery time characteristics:

CSFC302-G and Vishay ESH3BHE3 variants feature reduced reverse leakage current (5 µA vs. 10 µA) and lower forward voltage (900 mV vs. 950 mV), with automotive AEC-Q101 qualification available for Vishay parts.
ES3B-13-F offers the fastest reverse recovery time (25 ns) among alternatives, suitable for high-frequency switching applications.
RS3B-13-F provides standard recovery characteristics with higher forward voltage (1.3 V) and extended reverse recovery time (150 ns), appropriate for lower-frequency rectification circuits.

Package Variant Alternatives (DO-214AA SMB Package):

ES3BB-13-F and RS3BB-13-F are functionally equivalent to their SMC counterparts but in the larger DO-214AA (SMB) surface mount package. These components are selected when PCB layout or thermal management requirements necessitate the SMB package form factor.

Higher Current Alternative:

CGRC502-G (Comchip Technology) is rated for 5 A average rectified current at 100 V reverse voltage, providing current margin for applications requiring higher current capacity. This part operates with standard recovery characteristics (>500 ns) and is suitable for designs where increased current headroom is beneficial.

Selection Basis:

Component selection is determined by product status (active vs. discontinued), compliance certifications (RoHS3, AEC-Q101), package availability, and inventory levels. All listed alternatives maintain ROHS3 compliance and REACH unaffected status. Automotive applications requiring AEC-Q101 qualification should prioritize ES3BH, ESH3BHE3_A/H, or ESH3BHE3_A/I.

Frequently Asked Questions (FAQ)

Q: Can ES3B or ES3BH directly replace the discontinued ES3BHR7G?

A: Yes. ES3B and ES3BH are parametric equivalents with identical voltage (100 V), current (3 A), forward voltage (950 mV @ 3 A), reverse recovery time (35 ns), and package (DO-214AB SMC). Both are active products from Taiwan Semiconductor Corporation. ES3BH includes automotive AEC-Q101 qualification matching the original part.

Q: What is the difference between DO-214AB (SMC) and DO-214AA (SMB) packages?

A: DO-214AB (SMC) and DO-214AA (SMB) are distinct surface mount package outlines. SMC is smaller than SMB. ES3BB-13-F and RS3BB-13-F use the SMB package and are not pin-for-pin compatible with DO-214AB (SMC) footprints. Package selection depends on PCB layout and available footprint space.

Q: Which substitute part has the lowest forward voltage?

A: ES3B-13-F, ESH3BHE3_A/H, and ESH3BHE3_A/I all feature 900 mV forward voltage at 3 A, compared to 950 mV for the original ES3BHR7G. This 50 mV reduction decreases power dissipation in rectification circuits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant status and REACH Unaffected designation, meeting environmental and regulatory requirements equivalent to the original ES3BHR7G.

Q: Which substitute parts carry automotive AEC-Q101 qualification?

A: ES3BH, ESH3BHE3_A/H, and ESH3BHE3_A/I are qualified to AEC-Q101 automotive standards. These parts are appropriate for automotive and mission-critical applications requiring automotive-grade component certification.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns and are suitable for high-frequency switching applications. Standard recovery diodes exceed 500 ns reverse recovery time and are used in lower-frequency rectification. The ES3BHR7G and most substitutes are fast recovery devices. RS3B-13-F and RS3BB-13-F are exceptions with 150 ns recovery time, still classified as fast recovery but with different switching characteristics.

Q: Can CGRC502-G (5 A rated) replace ES3BHR7G (3 A rated)?

A: CGRC502-G meets the 100 V voltage requirement and exceeds the 3 A current requirement with 5 A rating. The higher current rating provides design margin but introduces different forward voltage (1.15 V @ 5 A vs. 950 mV @ 3 A) and standard recovery characteristics. Circuit-level verification is required to confirm compatibility with existing designs.

Q: What inventory levels are available for substitute parts?

A: ES3B offers the highest inventory with 10,400 units. ES3B-13-F provides 10,100 units. ES3BB-13-F has 126,199 units in stock. CSFC302-G, ESH3BHE3_A/H, and ESH3BHE3_A/I each have approximately 800–1,100 units available. RS3B-13-F and RS3BB-13-F have 9,100 and 3,100 units respectively. Inventory levels support both immediate and long-term procurement requirements.

Q: Which substitute part has the fastest reverse recovery time?

A: ES3B-13-F features the fastest reverse recovery time at 25 ns, compared to 35 ns for the original ES3BHR7G. This characteristic is beneficial for high-frequency switching applications where minimizing switching losses is critical.

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