ES1G-HF Equivalent & Substitute Parts

Part Overview

The ES1G-HF is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This fast recovery diode is designed for standard rectification applications requiring reverse recovery times of 35 nanoseconds or less. The part is currently Active in product status and ROHS3 compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the critical parameters: reverse voltage rating, average rectified current, forward voltage drop, recovery speed classification, and surface mount package type. Alternative sources provide design flexibility, supply chain redundancy, and inventory availability options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.25	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	—

Substitute Part Grouping Explanation

Substitute parts for the ES1G-HF are qualified based on the following electrical and mechanical criteria:

Critical Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Package / Case: DO-214AC, SMA (surface mount)
Mounting Type: Surface Mount

Allowable Variations:

Voltage - Forward (Vf) (Max) @ If: 1.25 V to 1.3 V @ 1 A
Reverse Recovery Time (trr): 25 ns to 35 ns
Current - Reverse Leakage @ Vr: 1 µA to 5 µA @ 400 V
Capacitance @ Vr, F: 7 pF to 20 pF @ 4V, 1MHz
Operating Temperature - Junction: -55°C to 125°C or higher

All substitute parts maintain the same functional classification as general-purpose rectifier diodes with fast recovery characteristics and are packaged in the DO-214AC (SMA) surface mount format, ensuring direct mechanical and electrical compatibility in circuit applications.

Parameter Comparison

Parameter	ES1G-HF (Comchip)	ES1G (Good-Ark)	ES1G-13-F (Diodes Inc.)	ES1G_R1_00001 (Panjit)	ES1GWG_R1_00001 (Panjit)
Manufacturer	Comchip Technology	Good-Ark Semiconductor	Diodes Incorporated	Panjit International Inc.	Panjit International Inc.
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 1 A	1.3 V @ 1 A	1.25 V @ 1 A	1.25 V @ 1 A	1.25 V @ 1 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	35 ns	35 ns	25 ns	35 ns	35 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	1 µA @ 400 V	1 µA @ 400 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	8 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	7 pF @ 4V, 1MHz	Not specified
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Operating Temperature - Junction	-55°C to 150°C	-55°C to 125°C	-55°C to 150°C	-55°C to 150°C	-55°C to 150°C
Product Status	Active	Active	Active	Active	Not For New Designs
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

The ES1G (Good-Ark Semiconductor), ES1G-13-F (Diodes Incorporated), and ES1G_R1_00001 (Panjit International Inc.) are all Active products suitable for new designs. These three parts maintain full electrical equivalence to the ES1G-HF across all critical parameters: 400 V reverse voltage, 1 A average rectified current, fast recovery speed classification, and DO-214AC surface mount packaging. All three are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

The ES1G-13-F offers the fastest reverse recovery time at 25 nanoseconds, compared to 35 nanoseconds for the ES1G-HF, providing superior switching performance in high-frequency applications. The ES1G_R1_00001 provides lower reverse leakage current at 1 µA compared to 5 µA, beneficial for low-power standby applications.

Secondary Substitute (Legacy Status):

The ES1GWG_R1_00001 (Panjit International Inc.) carries a "Not For New Designs" product status and should be used only for replacement or repair of existing assemblies. This part is electrically equivalent but is not recommended for new circuit development.

Packaging Considerations:

The ES1G (Good-Ark) is supplied in Cut Tape (CT) and Digi-Reel packaging, while the ES1G-HF and ES1GWG_R1_00001 are supplied in Tape & Reel (TR) format. The ES1G-13-F is supplied in Cut Tape (CT). Packaging format does not affect electrical performance but may influence procurement and assembly logistics.

Temperature Range:

The ES1G (Good-Ark) operates to a maximum junction temperature of 125°C, compared to 150°C for the ES1G-HF, ES1G-13-F, and Panjit variants. Applications requiring operation above 125°C must use the ES1G-HF or Diodes Incorporated ES1G-13-F.

Frequently Asked Questions (FAQ)

Q: Can the ES1G (Good-Ark) be used as a direct replacement for the ES1G-HF in all applications?

A: The ES1G is electrically equivalent for most applications. However, the maximum operating junction temperature is 125°C versus 150°C for the ES1G-HF. Applications requiring sustained operation above 125°C must use the ES1G-HF, ES1G-13-F, or Panjit variants.

Q: What is the difference between the ES1G-13-F and the ES1G-HF?

A: The ES1G-13-F has a faster reverse recovery time of 25 nanoseconds compared to 35 nanoseconds for the ES1G-HF. Both maintain identical voltage and current ratings. The faster recovery time of the ES1G-13-F provides improved switching characteristics in high-frequency rectification circuits.

Q: Are all substitute parts available in the same package format?

A: All substitute parts use the DO-214AC (SMA) surface mount package, ensuring mechanical compatibility. However, packaging formats differ: the ES1G-HF and ES1GWG_R1_00001 are supplied in Tape & Reel (TR), the ES1G in Cut Tape (CT) and Digi-Reel, and the ES1G-13-F in Cut Tape (CT). These differences affect procurement and assembly handling but not electrical performance.

Q: Why is the ES1GWG_R1_00001 marked "Not For New Designs"?

A: The ES1GWG_R1_00001 carries a legacy product status. It remains electrically equivalent and suitable for replacement applications but is not recommended for incorporation into new circuit designs. Use active-status alternatives for new development.

Q: What is the significance of reverse leakage current differences between parts?

A: The ES1G_R1_00001 and ES1GWG_R1_00001 specify 1 µA reverse leakage at 400 V, compared to 5 µA for the ES1G-HF, ES1G, and ES1G-13-F. Lower reverse leakage reduces standby power consumption and is beneficial in battery-powered or low-power applications. Higher leakage has negligible impact in standard rectification circuits.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All substitute parts share the DO-214AC (SMA) surface mount package with identical pin configuration and footprint. PCB layout and assembly processes require no modification when substituting between these parts.

Q: Which substitute offers the best overall performance?

A: Selection depends on application requirements. The ES1G-13-F provides the fastest reverse recovery time (25 ns) for high-frequency applications. The ES1G_R1_00001 provides the lowest reverse leakage (1 µA) for low-power standby applications. The ES1G offers the highest inventory availability. All maintain full electrical equivalence for standard rectification.

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