ES1A R3G Equivalent & Substitute Parts

Part Overview

The ES1A R3G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) 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 engineering tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 1 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 50 V
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the ES1A R3G is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 50 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: 920 mV to 1.1 V @ 1 A
Reverse Recovery Time (trr): 25 ns to 35 ns (Fast Recovery ≤ 500 ns)
Current - Reverse Leakage @ Vr: 5 µA @ 50 V
Operating Temperature - Junction: -55°C to 175°C (minimum -55°C required)

Parts are classified as Parametric Equivalent when all electrical specifications match within stated tolerances. Parts are classified as Direct Manufacturer or Similar when minor electrical parameter variations exist but functional compatibility is maintained within the application envelope.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [mV]	trr [ns]	Ir @ 50V [µA]	Package	Product Status	Automotive Grade
ES1A R3G	Taiwan Semiconductor Corporation	50	1	950	35	5	DO-214AC, SMA	Discontinued	—
ES1A	YAGEO	50	1	950	—	5	DO-214AC, SMA	Active	—
ES1AH	Taiwan Semiconductor Corporation	50	1	950	35	5	DO-214AC, SMA	Active	AEC-Q101
ES1A-LTP	Micro Commercial Co	50	1	950	35	5	DO-214AC, SMA	Not For New Designs	—
CGRA4001-G	Comchip Technology	50	1	1100	—	5	DO-214AC, SMA	Active	—
ES1A-13-F	Diodes Incorporated	50	1	920	25	5	DO-214AC, SMA	Active	—
ES1A-E3/5AT	Vishay General Semiconductor - Diodes Division	50	1	920	25	5	DO-214AC, SMA	Active	—
ES1A-M3/5AT	Vishay General Semiconductor - Diodes Division	50	1	920	25	5	DO-214AC, SMA	Active	—
ES1A-M3/61T	Vishay General Semiconductor - Diodes Division	50	1	920	25	5	DO-214AC, SMA	Active	—
ES1AHE3_A/H	Vishay General Semiconductor - Diodes Division	50	1	920	25	5	DO-214AC, SMA	Active	AEC-Q101
ES1AHE3_A/I	Vishay General Semiconductor - Diodes Division	50	1	920	25	5	DO-214AC, SMA	Active	AEC-Q101

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement):

The ES1A from YAGEO is a parametric equivalent offering identical electrical specifications to the ES1A R3G. This part is currently active in production with high inventory availability (80,200 pcs), making it the primary choice for direct substitution in non-automotive applications.

Active Equivalent with Automotive Qualification:

The ES1AH from Taiwan Semiconductor Corporation provides identical electrical specifications to the original ES1A R3G with the addition of AEC-Q101 automotive qualification. This part is active and suitable for automotive and mission-critical applications requiring enhanced reliability documentation.

Active Substitutes with Improved Performance:

The ES1A-13-F (Diodes Incorporated), ES1A-E3/5AT, ES1A-M3/5AT, and ES1A-M3/61T (all Vishay General Semiconductor - Diodes Division) offer improved forward voltage characteristics (920 mV vs. 950 mV) and faster reverse recovery time (25 ns vs. 35 ns). These parts are active in production and provide superior switching performance while maintaining full electrical compatibility.

Automotive-Qualified Alternatives:

The ES1AHE3_A/H and ES1AHE3_A/I from Vishay General Semiconductor - Diodes Division combine improved electrical performance (920 mV forward voltage, 25 ns recovery time) with AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring enhanced reliability standards.

Not Recommended for New Designs:

The ES1A-LTP from Micro Commercial Co is marked "Not For New Designs" and should be avoided for new product development, although it remains functionally compatible with the ES1A R3G.

Limited Compatibility:

The CGRA4001-G from Comchip Technology exhibits higher forward voltage (1.1 V) and standard recovery speed characteristics, making it suitable only for applications with relaxed switching performance requirements.

Frequently Asked Questions (FAQ)

Q: Can the ES1A from YAGEO directly replace the discontinued ES1A R3G?

A: Yes. The YAGEO ES1A is a parametric equivalent with identical voltage rating (50 V), current rating (1 A), forward voltage (950 mV @ 1 A), reverse recovery time (35 ns), and package (DO-214AC, SMA). It is currently active in production with substantial inventory availability.

Q: What is the difference between the ES1AH and the original ES1A R3G?

A: The ES1AH maintains identical electrical specifications but adds AEC-Q101 automotive qualification. Both are manufactured by Taiwan Semiconductor Corporation. The ES1AH is recommended for automotive and high-reliability applications.

Q: Are the Vishay ES1A-E3/5AT and ES1A-M3/5AT suitable replacements?

A: Yes. These parts meet all mandatory parameters (50 V, 1 A, DO-214AC package) and offer improved electrical performance with lower forward voltage (920 mV vs. 950 mV) and faster recovery time (25 ns vs. 35 ns). They are active in production and fully compatible.

Q: What does "Not For New Designs" mean for the ES1A-LTP?

A: This designation indicates the part is available for existing applications but should not be selected for new product development. While functionally compatible with the ES1A R3G, active alternatives with better availability and support are preferred.

Q: Is the CGRA4001-G from Comchip Technology a suitable substitute?

A: The CGRA4001-G meets the core voltage and current requirements but exhibits higher forward voltage (1.1 V vs. 950 mV) and standard recovery speed characteristics. It is suitable only for applications with relaxed switching performance requirements and is not recommended as a primary choice.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All listed substitute parts maintain MSL 1 (Unlimited) classification, identical to the original ES1A R3G, ensuring equivalent handling and storage requirements.

Q: Which substitute offers the best performance improvement?

A: The Vishay ES1A-E3/5AT, ES1A-M3/5AT, ES1A-M3/61T, ES1AHE3_A/H, and ES1AHE3_A/I all provide improved forward voltage (920 mV) and faster recovery time (25 ns). The automotive-qualified variants (ES1AHE3_A/H and ES1AHE3_A/I) are recommended for applications requiring enhanced reliability documentation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental and regulatory status of the original ES1A R3G.

Q: What is the operating temperature range difference between substitutes?

A: The original ES1A R3G and most substitutes operate from -55°C to 150°C. The ES1A-LTP extends to -65°C to 175°C, providing wider temperature coverage for extreme environment applications. All other substitutes maintain the -55°C to 150°C or -55°C to 155°C range.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message