CS1G-E3/I Equivalent & Substitute Parts

Part Overview

The CS1G-E3/I is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 400 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as obsolete, with standard recovery characteristics and a reverse recovery time of 1.5 µs. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and ongoing production requirements. Substitute parts maintain the same electrical ratings and package form factor while offering improved availability and active manufacturer support.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 1 A
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitute parts for the CS1G-E3/I are grouped based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following key parameters identical to the main part:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are differentiated by packaging format (Cut Tape vs. Tape & Reel), product status (Active vs. Obsolete), and minor variations in reverse recovery time and reverse leakage current. All listed substitutes are from active product lines and are available in high inventory quantities. Automotive-grade variants with AEC-Q101 qualification are identified separately for applications requiring automotive compliance.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [µs]	Ir @ Vr [µA]	Package	Packaging Format	Product Status	Grade
CS1G-E3/I	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.5	5 @ 400 V	DO-214AC, SMA	Cut Tape & Digi-Reel®	Obsolete	Standard
S1G-E3/5AT	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Cut Tape & Digi-Reel®	Active	Standard
S1G-E3/61T	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Cut Tape	Active	Standard
S1G-M3/5AT	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Tape & Reel	Active	Standard
S1G-M3/61T	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Tape & Reel	Active	Standard
S1GHE3_A/H	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Cut Tape	Active	Automotive
S1GHE3_A/I	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Cut Tape & Digi-Reel®	Active	Automotive
S1GHM3_A/H	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Tape & Reel	Active	Automotive
S1GHM3_A/I	Vishay General Semiconductor	400	1	1.1 @ 1 A	1.8	1 @ 400 V	DO-214AC, SMA	Tape & Reel	Active	Automotive
ES1G	Good-Ark Semiconductor	400	1	1.3 @ 1 A	0.035	5 @ 400 V	DO-214AC, SMA	Cut Tape & Digi-Reel®	Active	Standard
ACGRA4004-HF	Comchip Technology	400	1	1.1 @ 1 A	2.5	5 @ 400 V	DO-214AC, SMA	Tape & Reel	Active	Automotive

Engineering Selection Recommendations

Vishay S1G Series (Standard Grade): The S1G-E3/5AT, S1G-E3/61T, S1G-M3/5AT, and S1G-M3/61T are direct parametric equivalents from Vishay's active product line. These parts maintain identical electrical ratings and forward voltage characteristics while offering improved reverse leakage performance (1 µA vs. 5 µA). Selection between these variants depends on packaging format requirements: Cut Tape variants (E3) are suitable for lower-volume applications, while Tape & Reel variants (M3) are optimized for high-volume automated assembly. All S1G standard-grade variants are ROHS3 compliant and carry unlimited moisture sensitivity rating.

Vishay S1GH Series (Automotive Grade, AEC-Q101): The S1GHE3_A/H, S1GHE3_A/I, S1GHM3_A/H, and S1GHM3_A/I are automotive-qualified variants with AEC-Q101 certification. These parts are electrically identical to the standard S1G series but carry automotive-grade qualification. Selection between Cut Tape (E3) and Tape & Reel (M3) formats follows the same logic as standard-grade variants. The /H and /I suffixes indicate different packaging configurations. These variants are required for automotive applications or designs subject to automotive supply chain requirements.

Good-Ark ES1G: The ES1G is a fast-recovery alternative from Good-Ark Semiconductor with significantly reduced reverse recovery time (35 ns vs. 1.5 µs). This part exhibits higher forward voltage (1.3 V vs. 1.1 V) and is classified as fast recovery technology. The ES1G is suitable for applications where switching speed is critical and the higher forward voltage drop is acceptable. Operating temperature range is limited to -55°C to 125°C compared to 150°C for Vishay variants.

Comchip ACGRA4004-HF: The ACGRA4004-HF is an automotive-qualified alternative from Comchip Technology with AEC-Q101 certification. This part maintains identical forward voltage and reverse voltage ratings with slightly higher reverse recovery time (2.5 µs). The ACGRA4004-HF is available in Tape & Reel format and carries automotive-grade qualification, making it suitable for automotive applications where supply chain diversification is required.

Frequently Asked Questions (FAQ)

Q: Can the CS1G-E3/I be directly replaced with any of the listed substitutes?

A: Yes, all listed substitutes maintain the same voltage rating (400 V), current rating (1 A), forward voltage (1.1 V @ 1 A), and package form factor (DO-214AC, SMA). Direct replacement is electrically valid for standard industrial applications. Automotive applications require selection of AEC-Q101 qualified variants (S1GH series or ACGRA4004-HF).

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

A: Cut Tape (CT) and Digi-Reel® formats are suitable for lower-volume manual or semi-automated assembly processes. Tape & Reel (TR) formats are optimized for high-speed automated pick-and-place assembly equipment. The electrical performance is identical; packaging selection depends on manufacturing process requirements and volume.

Q: Why do some substitutes have lower reverse leakage current (1 µA vs. 5 µA)?

A: The S1G series variants exhibit improved reverse leakage performance compared to the obsolete CS1G-E3/I. This represents an improvement in device quality and is not a limitation. Lower reverse leakage reduces power dissipation in reverse-biased conditions and is beneficial for circuit performance.

Q: What is the significance of the reverse recovery time difference between CS1G-E3/I (1.5 µs) and S1G variants (1.8 µs)?

A: The reverse recovery time difference of 0.3 µs is within standard manufacturing tolerance for general-purpose rectifier diodes. Both values fall within the standard recovery classification (>500 ns). This minor difference does not affect circuit functionality in typical rectification applications. The ES1G variant with 35 ns recovery time is a fast-recovery device suitable for applications requiring faster switching characteristics.

Q: Are automotive-grade variants (S1GH series) required for non-automotive applications?

A: No. Automotive-grade variants carry AEC-Q101 qualification and are required only for automotive applications or designs subject to automotive supply chain specifications. Standard-grade variants (S1G series) are fully compliant with ROHS3 and suitable for industrial and consumer applications.

Q: Can the Good-Ark ES1G be used as a direct replacement despite its higher forward voltage (1.3 V vs. 1.1 V)?

A: The ES1G is electrically compatible but exhibits 0.2 V higher forward voltage drop. This results in increased power dissipation and heat generation. The ES1G is suitable only for applications where the higher forward voltage drop is acceptable and where fast recovery characteristics provide circuit performance benefits. Circuit simulation or testing is necessary to confirm suitability in specific applications.

Q: What is the difference between S1GHE3_A/H and S1GHE3_A/I?

A: Both variants are automotive-qualified S1GH series diodes in Cut Tape format with identical electrical specifications. The /H and /I suffixes indicate different packaging configurations or tape specifications. Selection between these variants depends on specific tape reel specifications required by assembly equipment or supplier requirements.

Q: Is the ACGRA4004-HF suitable for applications requiring high-volume automated assembly?

A: Yes. The ACGRA4004-HF is available in Tape & Reel format, which is optimized for high-speed automated pick-and-place assembly. It carries AEC-Q101 automotive qualification and is suitable for high-volume automotive or industrial applications requiring automotive-grade components.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message