S2G-HF General Purpose Rectifier Diode 400V 2A DO-214AC Equivalent & Substitute Parts

Part Overview

The S2G-HF is a general purpose rectifier diode manufactured by Comchip Technology, rated for 400V DC reverse voltage and 2A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility across multiple qualified suppliers is required for production continuity.

Substiute Parts

S2G-HF

Comchip TechnologyIn Stock: 855S2G-HF Datasheet

Current PartRFQ

GS2G-LTP

Micro Commercial CoIn Stock: 30669GS2G-LTP Datasheet

Parametric EquivalentRFQ

SA2G-E3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 21656SA2G-E3/5AT Datasheet

Parametric EquivalentRFQ

SA2G-E3/61T

Vishay General Semiconductor - Diodes DivisionIn Stock: 30495SA2G-E3/61T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the S2G-HF is permissible with parts that maintain electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Current - Average Rectified (Io): 2 A minimum
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A maximum
• Speed: Standard Recovery >500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 150°C minimum range

Mechanical Compatibility Requirements:

• Package / Case: DO-214AC, SMA (surface mount)
• Mounting Type: Surface Mount
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Compliance Requirements:

• RoHS3 Compliant status

All substitute parts listed meet these criteria and are electrically and mechanically interchangeable with the S2G-HF in applications requiring general purpose rectification at 400V and 2A ratings.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: S2G-HF (Comchip Technology)

The S2G-HF is the recommended primary choice for new designs and ongoing production. It maintains Active product status, ensuring long-term availability and manufacturer support. Full RoHS3 compliance and MSL 1 rating provide optimal handling flexibility in manufacturing environments.

Secondary Selection: SA2G-E3/5AT or SA2G-E3/61T (Vishay General Semiconductor - Diodes Division)

Both Vishay alternatives are suitable for direct substitution and maintain Active product status. These parts offer improved electrical characteristics with lower reverse leakage current (3 µA versus 5 µA) and reduced junction capacitance (11 pF versus 25 pF), which may provide performance benefits in high-frequency or low-leakage applications. Both are RoHS3 compliant with MSL 1 rating. The SA2G-E3/5AT and SA2G-E3/61T differ only in tape reel configuration and are electrically identical.

Tertiary Selection: GS2G-LTP (Micro Commercial Co)

The GS2G-LTP is electrically equivalent to the S2G-HF with identical electrical specifications. However, this part carries "Not For New Designs" product status, restricting its use to legacy system maintenance or existing production lines where supply continuity is critical. This part should not be selected for new design implementations.

Frequently Asked Questions (FAQ)

Q: Can the SA2G-E3/5AT and SA2G-E3/61T be used interchangeably with the S2G-HF?

A: Yes. Both Vishay parts are electrically and mechanically equivalent to the S2G-HF. They share identical voltage ratings (400V), current ratings (2A), forward voltage characteristics (1.1V @ 2A), recovery speed, operating temperature range (-55°C to 150°C), and package type (DO-214AC, SMA). The SA2G-E3/5AT and SA2G-E3/61T differ only in tape reel configuration and are otherwise identical.

Q: What is the difference between SA2G-E3/5AT and SA2G-E3/61T?

A: Both parts are electrically identical with the same electrical specifications. The designation difference reflects tape reel packaging configuration. Selection between these two is determined by manufacturing equipment compatibility and tape reel specifications, not electrical performance.

Q: Why is the GS2G-LTP marked "Not For New Designs"?

A: The GS2G-LTP carries "Not For New Designs" status, indicating the manufacturer has discontinued active development and support for this part. While electrically equivalent, it should be used only for sustaining production of existing designs or legacy system repairs. New designs should utilize S2G-HF or the Vishay alternatives (SA2G-E3/5AT or SA2G-E3/61T).

Q: Are there differences in reverse leakage current between these parts?

A: Yes. The S2G-HF and GS2G-LTP specify 5 µA reverse leakage at 400V, while the Vishay parts (SA2G-E3/5AT and SA2G-E3/61T) specify 3 µA at 400V. Both values are within acceptable limits for general purpose rectification. Applications requiring minimal leakage current may benefit from the Vishay alternatives.

Q: Are there differences in junction capacitance?

A: Yes. The S2G-HF specifies 25 pF at 4V and 1MHz, the GS2G-LTP specifies 20 pF, and the Vishay parts specify 11 pF. Lower capacitance in the Vishay alternatives may provide advantages in high-frequency switching applications or circuits sensitive to parasitic capacitance effects.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All listed parts (S2G-HF, GS2G-LTP, SA2G-E3/5AT, and SA2G-E3/61T) are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage conditions.

Q: Can these parts be used in surface mount assembly without modification?

A: Yes. All parts use the DO-214AC (SMA) surface mount package with identical footprints and mounting requirements. No PCB layout modifications are required when substituting between these parts.