ES1F Equivalent & Substitute Parts

Part Overview

The ES1F is a superfast recovery rectifier diode manufactured by onsemi, rated for 300V DC reverse voltage with 1A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Not For New Designs, indicating it has been superseded in onsemi's product portfolio. Finding equivalent substitute parts is necessary for applications requiring continued support, maintenance, or where existing inventory requires replenishment with functionally compatible alternatives.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	300	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Reverse Recovery Time (trr)	35	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	—
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the ES1F are identified based on strict electrical and mechanical parameter matching within the rectifier diode category. The substitution criteria are:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 300V
Current - Average Rectified (Io): 1A
Package / Case: DO-214AC (SMA)
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA

Secondary Compatibility Parameters:

Reverse Recovery Time (trr): 35 ns
RoHS3 Compliance
Operating Temperature Range: Compatible with 150°C maximum junction temperature

The ES1E_R1_00001 manufactured by Panjit International Inc. meets all primary and secondary matching criteria, making it a direct electrical and mechanical substitute for the ES1F in applications requiring 300V, 1A surface mount rectifier diodes in SMA packaging.

Parameter Comparison

Parameter	ES1F (onsemi)	ES1E_R1_00001 (Panjit)	Match Status
Voltage - DC Reverse (Vr) (Max)	300 V	300 V	Identical
Current - Average Rectified (Io)	1 A	1 A	Identical
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.25 V @ 1 A	Compatible (Panjit lower)
Reverse Recovery Time (trr)	35 ns	35 ns	Identical
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Identical
Current - Reverse Leakage @ Vr	5 µA @ 300 V	1 µA @ 300 V	Compatible (Panjit lower)
Capacitance @ Vr, F	10 pF @ 4V, 1MHz	7 pF @ 4V, 1MHz	Compatible (Panjit lower)
Package / Case	DO-214AC, SMA	DO-214AC, SMA	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Operating Temperature - Junction (Max)	150°C	150°C	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Product Status	Not For New Designs	Active	Substitute is active

Engineering Selection Recommendations

The ES1E_R1_00001 from Panjit International Inc. is a direct substitute for the ES1F in all electrical and mechanical aspects. Selection between these parts should be based on the following factors:

Product Status Consideration: The ES1F is classified as Not For New Designs, while the ES1E_R1_00001 maintains Active product status. For applications requiring long-term component availability and manufacturer support, the ES1E_R1_00001 is the preferred choice.

Compliance Alignment: Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility in equivalent applications.

Performance Characteristics: The ES1E_R1_00001 demonstrates equal or superior performance in all measured parameters. Forward voltage is 0.05V lower, reverse leakage current is lower by 4µA, and junction capacitance is 3pF lower. These differences represent improvements in efficiency and switching characteristics without introducing incompatibility.

Packaging and Inventory: The ES1F is supplied in Cut Tape (CT) & Digi-Reel® packaging, while the ES1E_R1_00001 is supplied in Tape & Reel (TR) format. Both are surface mount SMA packages suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the ES1E_R1_00001 directly replace the ES1F in existing circuit designs?

A: Yes. Both parts share identical voltage ratings (300V), current ratings (1A), package type (DO-214AC/SMA), and reverse recovery time (35ns). The ES1E_R1_00001 meets or exceeds all electrical specifications of the ES1F.

Q: What is the significance of the ES1F being marked "Not For New Designs"?

A: This designation indicates that onsemi has discontinued active development and promotion of the ES1F. The ES1E_R1_00001 is an active product from Panjit International Inc., ensuring continued availability and manufacturer support.

Q: Are there differences in forward voltage between these parts?

A: The ES1F specifies a maximum forward voltage of 1.3V at 1A, while the ES1E_R1_00001 specifies 1.25V at 1A. The lower forward voltage of the Panjit part results in reduced power dissipation and improved efficiency.

Q: Do both parts require the same PCB footprint?

A: Yes. Both the ES1F and ES1E_R1_00001 use the DO-214AC (SMA) package, which defines identical physical dimensions and land pattern requirements for surface mount assembly.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips cut to specified lengths, suitable for manual handling or small-volume assembly. Tape & Reel (TR) packaging supplies components on continuous reels, optimized for high-volume automated assembly processes. Both formats contain the same component; packaging selection depends on assembly methodology and volume requirements.

Q: Are there temperature operating range differences?

A: The ES1F specifies a maximum junction temperature of 150°C without a minimum specification. The ES1E_R1_00001 specifies an operating range of -55°C to 150°C. Both parts operate identically at the 150°C maximum junction temperature.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the ES1F and ES1E_R1_00001 are ROHS3 compliant and REACH Unaffected, meeting equivalent environmental and regulatory requirements.

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