ES1GH Equivalent & Substitute Parts

Part Overview

The ES1GH 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 surface mount DO-214AC (SMA) package. This component is classified as a fast recovery diode with a reverse recovery time of 35 ns and is qualified to AEC-Q101 automotive standards. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements permit component changes due to manufacturing availability, supply chain optimization, or design flexibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) Maximum @ 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
Capacitance @ Vr, F	16	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ES1GH are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent Parts share all critical electrical specifications with the main part: 400 V reverse voltage rating, 1 A average rectified current, 1.3 V forward voltage at 1 A, fast recovery speed classification (≤ 500ns), DO-214AC (SMA) surface mount package, and operating temperature range of -55°C to 150°C. These parts are direct functional replacements within the specified parameter envelope.

Similar Parts maintain the same voltage and current ratings, package type, and operating temperature range but differ in one or more secondary parameters such as reverse recovery time, forward voltage characteristics, speed classification, or capacitance values. These parts are suitable for applications where the specific parameter variance does not impact circuit performance.

The following parameters determine substitution eligibility:

Voltage - DC Reverse (Vr) Maximum: 400 V (required)
Current - Average Rectified (Io): 1 A (required)
Package / Case: DO-214AC, SMA (required)
Operating Temperature - Junction: -55°C to 150°C minimum (required)
Mounting Type: Surface Mount (required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) V	Io (A)	Vf (Max) @ If (V)	Speed	trr (ns)	Ir @ Vr (µA)	C @ Vr (pF)	Temp Range (°C)	Grade	Status
ES1GH	Taiwan Semiconductor Corporation	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	35	5 @ 400 V	16 @ 4V, 1MHz	-55 to 150	Automotive AEC-Q101	Active
ES1G	Good-Ark Semiconductor	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	35	5 @ 400 V	8 @ 4V, 1MHz	-55 to 125	—	Active
HS1G	SURGE	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	50	5 @ 400 V	20 @ 4V, 1MHz	-55 to 150	—	Active
RS1G	Taiwan Semiconductor Corporation	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	150	5 @ 400 V	10 @ 4V, 1MHz	-55 to 150	—	Active
RS1G R3G	Taiwan Semiconductor Corporation	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	150	5 @ 400 V	10 @ 4V, 1MHz	-55 to 150	—	Discontinued at DiGi Electronics
RS1GH	Taiwan Semiconductor Corporation	400	1	1.3 @ 1 A	Fast Recovery ≤ 500ns	150	5 @ 400 V	10 @ 4V, 1MHz	-55 to 150	Automotive AEC-Q101	Active
CGRA4004-G	Comchip Technology	400	1	1.1 @ 1 A	Standard Recovery >500ns	—	5 @ 400 V	—	-55 to 150	—	Active
ES1G-13-F	Diodes Incorporated	400	1	1.25 @ 1 A	Fast Recovery ≤ 500ns	25	5 @ 400 V	20 @ 4V, 1MHz	-55 to 150	—	Active
ES2G-LTP	Micro Commercial Co	400	2	1.25 @ 2 A	Fast Recovery ≤ 500ns	35	5 @ 400 V	15 @ 4V, 1MHz	-65 to 175	—	Active
GS1G-LTP	Micro Commercial Co	400	1	1.0 @ 1 A	Standard Recovery >500ns	—	10 @ 400 V	15 @ 4V, 1MHz	-55 to 150	—	Not For New Designs
GS2G-LTP	Micro Commercial Co	400	2	1.1 @ 2 A	Standard Recovery >500ns	—	5 @ 400 V	20 @ 4V, 1MHz	-55 to 150	—	Not For New Designs

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement)

RS1GH is the recommended parametric equivalent for the ES1GH. Both parts are manufactured by Taiwan Semiconductor Corporation, carry AEC-Q101 automotive qualification, maintain identical voltage and current ratings (400 V, 1 A), and operate across the -55°C to 150°C temperature range. The primary difference is reverse recovery time: RS1GH exhibits 150 ns compared to ES1GH's 35 ns. This variance is acceptable in applications where switching speed is not a critical constraint. RS1GH is actively produced and ROHS3 compliant.

ES1G (Good-Ark Semiconductor) is a parametric equivalent with identical electrical specifications except for a reduced maximum operating temperature of 125°C versus 150°C. This part is suitable for applications operating within the -55°C to 125°C range. The lower capacitance value (8 pF versus 16 pF) may provide improved high-frequency performance in certain circuit topologies.

Similar Part Selection (Application-Dependent)

ES1G-13-F (Diodes Incorporated) maintains fast recovery characteristics with a faster reverse recovery time of 25 ns, making it suitable for high-frequency switching applications. The forward voltage is slightly lower at 1.25 V versus 1.3 V, resulting in reduced power dissipation. This part is actively produced and ROHS3 compliant.

HS1G (SURGE) is suitable for applications where the 50 ns reverse recovery time and higher capacitance (20 pF) do not present circuit constraints. This part maintains the full -55°C to 150°C operating range and is actively produced.

Parts Not Recommended for New Designs

GS1G-LTP and GS2G-LTP are marked "Not For New Designs" and should not be selected for new circuit development. These parts employ standard recovery speed classification (>500ns) rather than fast recovery, making them unsuitable for applications requiring fast switching performance.

RS1G R3G is discontinued at DiGi Electronics and should not be selected for new designs or production applications.

Current Rating Variance

ES2G-LTP and GS2G-LTP are rated for 2 A average rectified current, exceeding the 1 A requirement of the ES1GH. These parts are oversized for 1 A applications and should not be selected unless circuit design specifically requires the higher current rating.

Frequently Asked Questions (FAQ)

Q: Can ES1G (Good-Ark Semiconductor) replace ES1GH in all applications?

A: ES1G is a parametric equivalent with identical voltage, current, and speed ratings. The maximum operating temperature is reduced from 150°C to 125°C. If your application operates within -55°C to 125°C, ES1G is a direct replacement. If junction temperatures exceed 125°C, ES1G is not suitable.

Q: What is the significance of reverse recovery time (trr) differences between substitute parts?

A: Reverse recovery time affects switching speed and electromagnetic interference (EMI) characteristics. ES1GH has 35 ns trr, while RS1GH has 150 ns. In low-frequency rectification circuits, this difference is negligible. In high-frequency switching applications (>100 kHz), the faster ES1GH or ES1G-13-F (25 ns) may be required to minimize switching losses and EMI.

Q: Are GS1G-LTP and GS2G-LTP suitable replacements?

A: No. These parts are classified as "Not For New Designs" and employ standard recovery speed (>500ns) rather than fast recovery. They are unsuitable for applications requiring fast switching performance and should not be selected for new circuit development.

Q: Can I use ES2G-LTP or GS2G-LTP in place of ES1GH?

A: These parts are rated for 2 A average rectified current, exceeding the 1 A specification of ES1GH. While electrically compatible at 1 A operation, they are oversized for this application. Use only if circuit design specifically requires the higher current rating or if 1 A-rated parts are unavailable.

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 is 35 ns (fast recovery), while RS1GH is 150 ns. Both maintain 400 V, 1 A ratings and -55°C to 150°C operating range. RS1GH is suitable for applications where switching speed is not critical.

Q: Is CGRA4004-G a suitable replacement?

A: CGRA4004-G maintains the 400 V, 1 A ratings and DO-214AC package. However, it employs standard recovery speed (>500ns) rather than fast recovery, and forward voltage is lower at 1.1 V. This part is suitable only for low-frequency rectification applications where fast switching is not required.

Q: What packaging options are available for equivalent parts?

A: All substitute parts listed are supplied in DO-214AC (SMA) surface mount package. Packaging formats vary by supplier: Tape & Reel (TR), Cut Tape (CT), Cut Tape & Digi-Reel, and Bag. Select the packaging format compatible with your assembly process.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity level, permitting standard storage and handling without desiccant requirements.

Q: Which substitute part has the lowest forward voltage drop?

A: GS1G-LTP has the lowest forward voltage at 1.0 V @ 1 A, followed by CGRA4004-G at 1.1 V. However, GS1G-LTP is marked "Not For New Designs." ES1G-13-F offers 1.25 V with active production status and fast recovery characteristics.

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