ES2LGH Equivalent & Substitute Parts

Part Overview

The ES2LGH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) 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 902 units in stock.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support applications requiring alternative sourcing options while maintaining electrical and mechanical compatibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 2 A	V
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 400 V
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the ES2LGH are classified into two categories based on electrical parameter alignment:

Parametric Equivalents maintain all critical electrical specifications: 400 V reverse voltage rating, 2 A average rectified current, 1.3 V maximum forward voltage at 2 A, fast recovery characteristics (≤500 ns), and 35 ns reverse recovery time. These parts are direct functional replacements with identical DO-214AA packaging and surface mount mounting type.

Similar Parts share the same voltage and current ratings and package form factor but exhibit variations in one or more secondary parameters such as forward voltage, reverse recovery time, reverse leakage current, or capacitance. These parts are suitable for applications where the specified parameter variation does not impact circuit performance.

Key parameters determining substitution eligibility:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 2 A
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Speed Classification: Fast Recovery (≤500 ns) or Standard Recovery

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Status
ES2LGH	Taiwan Semiconductor Corporation	400	2	1.3 @ 2 A	35	10 @ 400 V	DO-214AA	Active
ES2G	YAGEO	400	—	1.3	—	DO-214AA	Active
ES2G R5G	Taiwan Semiconductor Corporation	400	2	1.3 @ 2 A	35	10 @ 400 V	DO-214AA	Discontinued at DiGi Electronics
ES2GH	Taiwan Semiconductor Corporation	400	2	1.3 @ 2 A	35	10 @ 400 V	DO-214AA	Active
HS2G	Good-Ark Semiconductor	400	2	1.3 @ 2 A	50	5 @ 400 V	DO-214AA	Active
RS2G	Taiwan Semiconductor Corporation	400	2	1.3 @ 2 A	150	5 @ 400 V	DO-214AA	Active
CGRB204-G	Comchip Technology	400	2	1.1 @ 2 A	—	DO-214AA	Active
CGRB304-G	Comchip Technology	400	3	1.1 @ 3 A	—	DO-214AA	Active
ER1G-LTP	Micro Commercial Co	400	1	1.25 @ 1 A	35	5 @ 400 V	DO-214AA	Active
ER2G-LTP	Micro Commercial Co	400	2	1.25 @ 2 A	35	5 @ 400 V	DO-214AA	Active
ER3GB-TP	Micro Commercial Co	400	3	1.25 @ 3 A	35	5 @ 400 V	DO-214AA	Active

Engineering Selection Recommendations

Parametric Equivalent Selection (Direct Replacement)

ES2GH is the recommended parametric equivalent. This part is manufactured by Taiwan Semiconductor Corporation, maintains identical electrical specifications to the ES2LGH, carries AEC-Q101 automotive qualification, and is currently active in production with 9,400 units in stock. The ES2GH is suitable for applications requiring automotive-grade components with verified compliance.

ER2G-LTP from Micro Commercial Co is an alternative parametric equivalent with identical voltage, current, and recovery time specifications. This part is active in production with 3,200 units available and operates across an extended temperature range (-65°C to 175°C). The ER2G-LTP is appropriate for applications requiring broader temperature performance.

Similar Part Selection (Parameter Variation Acceptable)

HS2G from Good-Ark Semiconductor maintains the 400 V, 2 A rating with identical forward voltage but exhibits a 50 ns reverse recovery time (compared to 35 ns) and lower reverse leakage current (5 µA versus 10 µA). This part is suitable for applications where slightly extended recovery time does not impact circuit timing requirements.

RS2G from Taiwan Semiconductor Corporation maintains the 400 V, 2 A rating with identical forward voltage but exhibits a 150 ns reverse recovery time. This part is appropriate for non-critical timing applications where standard recovery characteristics are acceptable.

CGRB204-G from Comchip Technology maintains the 400 V, 2 A rating with a lower forward voltage (1.1 V) and standard recovery characteristics. This part is suitable for applications prioritizing reduced forward voltage drop.

Parts Not Recommended for Direct Substitution

ES2G R5G is discontinued at DiGi Electronics and should not be selected for new designs despite matching electrical specifications.

CGRB304-G and ER3GB-TP are rated for 3 A average rectified current and are oversized for 2 A applications. These parts may be used in applications requiring higher current capacity.

ER1G-LTP is rated for 1 A average rectified current and is undersized for 2 A applications. This part is not suitable as a substitute.

Frequently Asked Questions (FAQ)

Q: Can ES2GH be used as a direct replacement for ES2LGH?

A: Yes. ES2GH is a parametric equivalent manufactured by Taiwan Semiconductor Corporation with identical electrical specifications: 400 V reverse voltage, 2 A average rectified current, 1.3 V forward voltage at 2 A, and 35 ns reverse recovery time. Both parts carry AEC-Q101 automotive qualification and use the same DO-214AA surface mount package.

Q: What is the difference between ES2LGH and ER2G-LTP?

A: Both parts are parametric equivalents with identical voltage, current, and recovery time ratings. The primary differences are manufacturer (Taiwan Semiconductor Corporation versus Micro Commercial Co) and operating temperature range (ES2LGH: -55°C to 150°C; ER2G-LTP: -65°C to 175°C). ER2G-LTP is suitable for applications requiring extended low-temperature operation.

Q: Can HS2G replace ES2LGH in all applications?

A: HS2G is a suitable substitute for most applications. It maintains the 400 V, 2 A rating and 1.3 V forward voltage but exhibits a 50 ns reverse recovery time compared to 35 ns for ES2LGH. Applications with strict timing requirements or high-frequency switching may require verification that the extended recovery time does not impact performance.

Q: Why is CGRB304-G listed as a similar part if it is rated for 3 A?

A: CGRB304-G shares the same 400 V voltage rating and DO-214AA package but is rated for 3 A average rectified current. It is classified as a similar part because it can be used in applications where the ES2LGH is specified, provided the circuit design accommodates the higher current rating. The part is oversized for 2 A applications but remains electrically compatible.

Q: What does AEC-Q101 qualification mean for automotive applications?

A: AEC-Q101 is an automotive industry standard qualification for discrete semiconductors. Parts carrying this qualification have been tested and validated for automotive use, including temperature cycling, moisture resistance, and reliability requirements. ES2LGH and ES2GH both carry AEC-Q101 qualification and are suitable for automotive circuit designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed in this reference maintain RoHS3 compliance and are suitable for applications requiring lead-free component specifications.

Q: Can RS2G be used where fast recovery characteristics are critical?

A: RS2G exhibits a 150 ns reverse recovery time, which is significantly longer than the 35 ns specification of ES2LGH. Applications requiring fast recovery characteristics for high-frequency switching or precise timing should not use RS2G. This part is appropriate only for applications where standard recovery performance is acceptable.

Q: What is the significance of the DO-214AA package designation?

A: DO-214AA, also designated SMB (Surface Mount Body), is a standardized surface mount package for rectifier diodes. All parts in this reference use the DO-214AA package, ensuring mechanical and electrical compatibility on printed circuit boards designed for this form factor. No package conversion or board redesign is required when substituting between these parts.

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