ESH3C-E3/9AT Equivalent & Substitute Parts

Part Overview

The ESH3C-E3/9AT is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at 150 V DC reverse voltage with a 3 A average rectified current rating and features fast recovery characteristics with a 40 ns reverse recovery time. The device is housed in a DO-214AB (SMC) package and is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when alternative manufacturers produce diodes with matching or superior electrical and mechanical specifications within the same package category, enabling design flexibility, supply chain optimization, and inventory management without compromising circuit performance.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	mV
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	40	ns
Current - Reverse Leakage @ Vr	5	µA @ 150 V
Package / Case	DO-214AB, SMC	-
Mounting Type	Surface Mount	-
Operating Temperature - Junction	-55 to 175	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the ESH3C-E3/9AT are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

Voltage - DC Reverse (Vr) (Max): 150 V minimum
Current - Average Rectified (Io): 3 A minimum
Package / Case: DO-214AB or DO-214AA (SMC/SMB compatible footprints)
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitution Logic: Parts are considered equivalent when they meet or exceed the primary matching criteria. Forward voltage (Vf), reverse recovery time (trr), and reverse leakage current may vary within acceptable ranges for general-purpose rectification applications. Operating temperature range and technology type (Standard vs. Schottky) are secondary considerations that do not preclude substitution when primary electrical ratings are satisfied.

Parameter Comparison

Parameter	ESH3C-E3/9AT (Vishay)	ES3C (Taiwan Semiconductor)	ES3C-13-F (Diodes Inc.)	STPS3150U (STMicroelectronics)
Manufacturer	Vishay General Semiconductor	Taiwan Semiconductor Corporation	Diodes Incorporated	STMicroelectronics
Voltage - DC Reverse (Vr) (Max)	150 V	150 V	150 V	150 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 3 A	950 mV @ 3 A	900 mV @ 3 A	820 mV @ 3 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	40 ns	35 ns	25 ns	Not specified
Current - Reverse Leakage @ Vr	5 µA @ 150 V	10 µA @ 150 V	10 µA @ 150 V	2 µA @ 150 V
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AA, SMB
Operating Temperature - Junction	-55 to 175°C	-55 to 150°C	-55 to 150°C	Max 175°C
Technology	Standard	Standard	Standard	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

ES3C (Taiwan Semiconductor Corporation): This substitute maintains identical voltage and current ratings with a 35 ns reverse recovery time, which is superior to the original part. Forward voltage is 50 mV higher at 950 mV. Operating temperature range is reduced to -55 to 150°C. All compliance certifications (ROHS3, MSL 1) are maintained. This part is suitable for applications where the reduced temperature range does not conflict with system requirements.

ES3C-13-F (Diodes Incorporated): This substitute provides identical voltage and current ratings with superior reverse recovery time of 25 ns and matching forward voltage of 900 mV. Operating temperature range is -55 to 150°C. Packaging is specified as SMC with Tape & Reel (TR) format. All compliance certifications are maintained. This part offers the fastest recovery characteristics among standard technology substitutes.

STPS3150U (STMicroelectronics): This substitute employs Schottky technology rather than standard rectifier technology, resulting in lower forward voltage (820 mV) and significantly lower reverse leakage current (2 µA). The package is DO-214AA (SMB) rather than DO-214AB (SMC), requiring PCB footprint verification. Operating temperature maximum is 175°C. All compliance certifications are maintained. Schottky technology provides superior switching performance and lower power dissipation in high-frequency applications.

Frequently Asked Questions (FAQ)

Q: Can ES3C be used as a direct replacement for ESH3C-E3/9AT?

A: ES3C meets all primary electrical specifications (150 V, 3 A, fast recovery, SMC package) and maintains ROHS3 compliance and MSL 1 rating. The 50 mV increase in forward voltage and 5°C reduction in maximum junction temperature are within acceptable ranges for general-purpose rectification. Direct substitution is permissible when the application does not require operation above 150°C.

Q: What is the difference between ES3C-13-F and ES3C?

A: Both parts are manufactured by different companies (Diodes Incorporated vs. Taiwan Semiconductor Corporation) and share the same base product number ES3C. ES3C-13-F features a faster reverse recovery time (25 ns vs. 35 ns) and is supplied in Tape & Reel (TR) packaging format. Electrical ratings and compliance certifications are equivalent.

Q: Why does STPS3150U have a different package designation (SMB vs. SMC)?

A: STPS3150U uses DO-214AA (SMB) package while ESH3C-E3/9AT uses DO-214AB (SMC) package. Although both are surface mount packages with similar form factors, the SMB package is slightly smaller. PCB footprint compatibility must be verified before substitution. The Schottky technology of STPS3150U provides lower forward voltage (820 mV) and reverse leakage current (2 µA), making it suitable for applications prioritizing efficiency over package consistency.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (ES3C, ES3C-13-F, and STPS3150U) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original ESH3C-E3/9AT specifications.

Q: What is the significance of reverse recovery time differences?

A: Reverse recovery time (trr) indicates the speed at which a diode transitions from forward conduction to reverse blocking. The ESH3C-E3/9AT has 40 ns trr, while substitutes range from 25 ns (ES3C-13-F) to 35 ns (ES3C). Faster recovery times reduce switching losses and electromagnetic interference in high-frequency applications. All parts meet the fast recovery classification (≤ 500ns, > 200mA).

Q: Can STPS3150U be used in all applications where ESH3C-E3/9AT is specified?

A: STPS3150U is a Schottky diode with different electrical characteristics (lower forward voltage, lower reverse leakage) and a different package (SMB vs. SMC). While it meets voltage and current ratings, the Schottky technology and package difference require circuit analysis and PCB layout verification. Schottky diodes are preferred in high-frequency switching and low-voltage drop applications but may exhibit higher reverse leakage at elevated temperatures compared to standard rectifiers.

Q: What inventory levels are available for each substitute?

A: ES3C has 10,200 pcs in stock, ES3C-13-F has 10,300 pcs in stock, and STPS3150U has 18,032 pcs in stock. The original ESH3C-E3/9AT has 680 pcs in stock.

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