ES3BHE3/9AT Equivalent & Substitute Parts

Part Overview

The ES3BHE3/9AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. The diode features fast recovery characteristics with a 30 ns reverse recovery time and automotive-grade qualification per AEC-Q101.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Reverse Recovery Time (trr)	30	ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	µA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ES3BHE3/9AT is determined by the following critical parameters:

Electrical Parameters (Must Match or Exceed):

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 3 A minimum
Forward voltage drop (Vf) at rated current
Reverse recovery time (trr) for switching performance
Reverse leakage current at rated voltage

Mechanical Parameters (Must Match):

Package / Case: DO-214AB, SMC surface mount configuration
Mounting Type: Surface Mount

Compliance Parameters:

RoHS3 Compliance
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Unaffected status

Substitute parts are grouped into three categories:

Direct Equivalents (Vishay ES3 Series): Parts with identical electrical specifications, automotive qualification, and fast recovery characteristics. These include ES3BHE3_A/I, ES3B-E3/57T, ES3B-E3/9AT, ES3B-M3/57T, ES3B-M3/9AT, and ES3BHE3_A/H. Differences exist only in packaging format (Tape & Reel vs. Cut Tape) and inventory status.
Parametric Equivalents (Alternative Manufacturers): Parts meeting the core electrical requirements (100 V, 3 A, DO-214AB package) but from different manufacturers. ES3B (Taiwan Semiconductor Corporation) and S3B-13-F (Diodes Incorporated) fall into this category with minor variations in forward voltage and recovery characteristics.
Functional Alternatives (Higher Voltage Rating): STTH302S (STMicroelectronics) provides 200 V reverse voltage rating with identical 3 A current rating and fast recovery performance, suitable for applications requiring higher voltage margin.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 3A [mV]	trr [ns]	Speed	Package	Status	Automotive Grade
ES3BHE3/9AT	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Obsolete	Yes (AEC-Q101)
ES3BHE3_A/I	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	Yes (AEC-Q101)
ES3B-E3/57T	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	No
ES3B-E3/9AT	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	No
ES3B-M3/57T	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	No
ES3B-M3/9AT	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	No
ES3BHE3_A/H	Vishay	100	3	900	30	Fast Recovery	DO-214AB	Active	Yes (AEC-Q101)
ES3B	Taiwan Semiconductor	100	3	950	35	Fast Recovery	DO-214AB	Active	No
S3B-13-F	Diodes Incorporated	100	3	1150	—	Standard Recovery	DO-214AB	Active	No
S3B-TP	Micro Commercial Co	100	3	1200	—	Standard Recovery	DO-214AB	Not For New Designs	No
STTH302S	STMicroelectronics	200	3	950	35	Fast Recovery	DO-214AB	Active	No

Engineering Selection Recommendations

For Automotive Applications (AEC-Q101 Required):

Select ES3BHE3_A/I or ES3BHE3_A/H as primary replacements for the obsolete ES3BHE3/9AT. Both parts maintain identical electrical specifications, automotive-grade qualification per AEC-Q101, and fast recovery characteristics. ES3BHE3_A/I is available in Tape & Reel packaging with 749 pieces in stock, while ES3BHE3_A/H offers the same qualification with 715 pieces available. These parts provide direct functional equivalence with active product status.

For Non-Automotive Applications:

ES3B-E3/57T and ES3B-E3/9AT from Vishay provide identical electrical performance with fast recovery characteristics and active status. ES3B-E3/57T is available in Cut Tape format with 5730 pieces in stock, offering superior availability. ES3B-E3/9AT is supplied in Tape & Reel with 4742 pieces available. Both maintain the 100 V / 3 A rating and 30 ns reverse recovery time.

For High-Voltage Margin Applications:

STTH302S (STMicroelectronics) provides a 200 V reverse voltage rating while maintaining 3 A current capacity and fast recovery performance. This part is suitable for applications requiring enhanced voltage headroom. With 25200 pieces in stock, STTH302S offers maximum availability. Forward voltage is 950 mV at 3 A with 35 ns reverse recovery time.

For Cost-Optimized Designs (Non-Critical Switching):

S3B-13-F (Diodes Incorporated) meets the 100 V / 3 A requirements with standard recovery characteristics and is available in high volume (30100 pieces). Forward voltage is 1150 mV at 3 A. This part is suitable for non-switching rectification applications where recovery time is not performance-critical.

Parts to Avoid:

S3B-TP (Micro Commercial Co) carries "Not For New Designs" status and should not be selected for new development projects, despite active inventory availability.

Frequently Asked Questions (FAQ)

Q: Can ES3BHE3_A/I directly replace the obsolete ES3BHE3/9AT?

A: Yes. ES3BHE3_A/I is a direct equivalent with identical electrical specifications (100 V, 3 A, 900 mV forward voltage, 30 ns recovery time), automotive AEC-Q101 qualification, and DO-214AB package. The only difference is packaging format (Tape & Reel vs. bulk). Electrical performance and reliability are equivalent.

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

A: Fast recovery diodes (ES3 series, STTH302S) have reverse recovery times ≤ 500 ns, suitable for switching applications and high-frequency circuits. Standard recovery diodes (S3B-13-F, S3B-TP) have recovery times > 500 ns and are appropriate for line-frequency rectification and non-switching applications. The ES3BHE3/9AT is a fast recovery device; substitutes should maintain this characteristic for equivalent switching performance.

Q: Is STTH302S a suitable replacement despite its 200 V rating?

A: STTH302S is functionally compatible for applications where 100 V operation is required. The higher 200 V rating provides additional voltage margin without performance degradation. However, STTH302S lacks automotive qualification. Use STTH302S only in non-automotive applications where the higher voltage rating is beneficial or neutral.

Q: Why do some Vishay ES3B variants lack automotive qualification?

A: ES3B-E3/57T, ES3B-E3/9AT, ES3B-M3/57T, and ES3B-M3/9AT are standard industrial-grade variants without AEC-Q101 qualification. For automotive applications, select only ES3BHE3_A/I or ES3BHE3_A/H, which carry explicit automotive-grade designation and AEC-Q101 qualification.

Q: What packaging options are available for equivalent parts?

A: Vishay ES3 series equivalents are supplied in three formats: Tape & Reel (TR), Cut Tape (CT), and bulk. ES3BHE3_A/I and ES3B-E3/9AT use Tape & Reel. ES3B-E3/57T uses Cut Tape. All maintain identical electrical performance; packaging selection depends on assembly process requirements and volume needs.

Q: Can I use S3B-13-F in a high-speed switching circuit?

A: No. S3B-13-F is a standard recovery diode with recovery time > 500 ns, unsuitable for high-frequency switching applications. The ES3BHE3/9AT is a fast recovery device (30 ns). For equivalent switching performance, select fast recovery alternatives: ES3BHE3_A/I, ES3B-E3/57T, ES3B-E3/9AT, or STTH302S.

Q: What is the inventory status for each substitute?

A: ES3B-E3/57T offers the highest availability (5730 pieces). ES3B-E3/9AT provides 4742 pieces. STTH302S is available in high volume (25200 pieces). S3B-13-F has 30100 pieces in stock. ES3BHE3_A/I and ES3BHE3_A/H each have approximately 700-750 pieces available. S3B-TP has 8818 pieces but carries "Not For New Designs" status.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliance and REACH Unaffected status, matching the environmental compliance profile of the original ES3BHE3/9AT.

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