ES1LG Equivalent & Substitute Parts

Part Overview

The ES1LG is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as obsolete, indicating discontinuation from the original manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this rectifier specification.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 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 ES1LG is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Voltage - Forward (Vf) (Max) @ If: ≤ 1.3 V @ 1 A
Current - Reverse Leakage @ Vr: ≤ 5 µA @ 400 V
Operating Temperature - Junction: -55°C to 150°C minimum

Acceptable Variation Parameters:

Reverse Recovery Time (trr): Values ≤ 150 ns are acceptable for fast recovery applications; values up to 500 ns remain within fast recovery classification
Capacitance @ Vr, F: Variation permitted within specified measurement conditions
Packaging format (Cut Tape, Tape & Reel, Bag): Interchangeable for component selection

Substitute parts are grouped into three categories: parametric equivalents (matching all critical specifications), direct manufacturer equivalents (alternative part numbers from the same or equivalent manufacturers), and similar parts (meeting core electrical requirements with minor parameter variations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V @ A]	trr [ns]	Ir @ Vr [µA @ V]	Package	Product Status
ES1LG	Taiwan Semiconductor Corporation	400	1	1.3 @ 1	35	5 @ 400	DO-214AC, SMA	Obsolete
ES1G	Good-Ark Semiconductor	400	1	1.3 @ 1	35	5 @ 400	DO-214AC, SMA	Active
ES1GH	Taiwan Semiconductor Corporation	400	1	1.3 @ 1	35	5 @ 400	DO-214AC, SMA	Active
HS1G	SURGE	400	1	1.3 @ 1	50	5 @ 400	DO-214AC, SMA	Active
RS1G	Taiwan Semiconductor Corporation	400	1	1.3 @ 1	150	5 @ 400	DO-214AC, SMA	Active
RS1G R3G	Taiwan Semiconductor Corporation	400	1	1.3 @ 1	150	5 @ 400	DO-214AC, SMA	Discontinued at DiGi Electronics
RS1GH	Taiwan Semiconductor Corporation	400	1	1.3 @ 1	150	5 @ 400	DO-214AC, SMA	Active
CSFA104-G	Comchip Technology	400	1	1.25 @ 1	35	5 @ 400	DO-214AC, SMA	Active
CGRA4004-G	Comchip Technology	400	1	1.1 @ 1	Not specified	5 @ 400	DO-214AC, SMA	Active
ES1G-13-F	Diodes Incorporated	400	1	1.25 @ 1	25	5 @ 400	DO-214AC, SMA	Active

Engineering Selection Recommendations

Parametric Equivalents (Recommended Primary Substitutes):

ES1G (Good-Ark Semiconductor) and ES1GH (Taiwan Semiconductor Corporation) provide direct parametric equivalence to the ES1LG across all critical electrical specifications. ES1GH carries automotive-grade qualification (AEC-Q101) and is available in active product status with Tape & Reel packaging. ES1G is available in Cut Tape & Digi-Reel format with high inventory availability (415,300 units). Both parts maintain identical voltage, current, forward voltage, and reverse recovery time specifications.

Fast Recovery Equivalents:

CSFA104-G (Comchip Technology) and ES1G-13-F (Diodes Incorporated) meet fast recovery specifications with reverse recovery times of 35 ns and 25 ns respectively. CSFA104-G exhibits forward voltage of 1.25 V, while ES1G-13-F operates at 1.25 V with superior reverse recovery performance (25 ns). Both are in active product status.

Extended Recovery Time Alternatives:

RS1G, RS1G R3G, and RS1GH (Taiwan Semiconductor Corporation) provide functional equivalence with extended reverse recovery times of 150 ns, remaining within fast recovery classification (≤ 500 ns). RS1GH carries automotive qualification (AEC-Q101) and is available in active status. These parts are suitable for applications where extended recovery time does not impact circuit performance.

Standard Recovery Alternative:

CGRA4004-G (Comchip Technology) operates with standard recovery characteristics (>500 ns) and exhibits the lowest forward voltage specification (1.1 V @ 1 A). This part is suitable only for applications where fast recovery is not a design requirement.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and EAR99 export classification. Parts in active product status are preferred for new designs and ongoing production. Taiwan Semiconductor Corporation parts (ES1GH, RS1GH) provide continuity with the original manufacturer ecosystem.

Frequently Asked Questions (FAQ)

Q: Can ES1G be used as a direct replacement for ES1LG?

A: Yes. ES1G meets all mandatory electrical parameters: 400 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage at 1 A, 35 ns reverse recovery time, and identical package specification (DO-214AC, SMA). The primary difference is manufacturer (Good-Ark Semiconductor versus Taiwan Semiconductor Corporation) and product status (Active versus Obsolete). Inventory availability for ES1G is significantly higher (415,300 units).

Q: What is the difference between ES1GH and RS1GH?

A: Both parts are manufactured by Taiwan Semiconductor Corporation and carry AEC-Q101 automotive qualification. The primary difference is reverse recovery time: ES1GH operates at 35 ns (fast recovery), while RS1GH operates at 150 ns (extended recovery, still within fast recovery classification). ES1GH is preferred for applications requiring faster switching performance. Both are available in Tape & Reel packaging and active product status.

Q: Is CGRA4004-G suitable for the ES1LG application?

A: CGRA4004-G meets voltage and current specifications but operates with standard recovery characteristics (>500 ns) rather than fast recovery (≤ 500 ns). This part is suitable only if the original application does not require fast recovery performance. Forward voltage is lower (1.1 V), which may provide thermal benefits in some circuits but does not constitute a performance advantage for rectification.

Q: What packaging options are available for substitutes?

A: Substitute parts are available in three packaging formats: Cut Tape (CT) & Digi-Reel, Tape & Reel (TR), and Bag. All formats contain identical components in DO-214AC (SMA) surface mount package. Selection depends on production volume and assembly process requirements. Cut Tape and Digi-Reel formats are suitable for lower-volume production; Tape & Reel is standard for high-volume automated assembly.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original ES1LG specification.

Q: Which substitute offers the fastest reverse recovery time?

A: ES1G-13-F (Diodes Incorporated) provides the fastest reverse recovery time at 25 ns, compared to 35 ns for ES1LG. This part is suitable for applications requiring maximum switching speed. It is available in active product status with high inventory (420,300 units).

Q: Can I use RS1G instead of ES1LG in a high-speed switching application?

A: RS1G operates with 150 ns reverse recovery time, which is significantly longer than ES1LG (35 ns). While both are classified as fast recovery (≤ 500 ns), the extended recovery time of RS1G may impact switching frequency performance. Use RS1G only if circuit analysis confirms that 150 ns recovery time is acceptable for the intended application frequency.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message