Equivalent & Substitute Parts for EDF1AS/27 Bridge Rectifier

Part Overview

The EDF1AS/27 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V peak reverse voltage and 1 A average rectified current in a 4-SMD, Gull Wing surface mount package. The part is currently obsolete, making identification of equivalent and substitute components necessary for ongoing production support, maintenance, and design continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and availability constraints.

Substiute Parts

EDF1AS/27

Vishay General Semiconductor - Diodes DivisionIn Stock: 1204EDF1AS/27 Datasheet

Current PartRFQ

EDF1AS-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 5498EDF1AS-E3/45 Datasheet

DirectRFQ

DF005S

onsemiIn Stock: 2642DF005S Datasheet

MFR RecommendedRFQ

DF15005S-G

Comchip TechnologyIn Stock: 886DF15005S-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EDF1AS/27 is determined by the following criteria:

Mandatory Electrical Parameters:

• Voltage - Peak Reverse (Max): 50 V (exact match required)
• Diode Type: Single Phase (exact match required)
• Technology: Standard (exact match required)
• Operating Temperature Range: -55°C ~ 150°C (TJ) (exact match required)

Allowable Variations:

• Current - Average Rectified (Io): Equal to or greater than 1 A
• Voltage - Forward (Vf) (Max) @ If: Equal to or less than 1.05 V at rated current
• Current - Reverse Leakage @ Vr: Equal to or less than 5 µA @ 50 V

Package Compatibility:

• Mounting Type: Surface Mount (required)
• Package / Case: 4-SMD, Gull Wing (required for direct mechanical compatibility)

Compliance Requirements:

• RoHS Status: ROHS3 Compliant (required)
• REACH Status: REACH Unaffected (required)

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: EDF1AS-E3/45

The EDF1AS-E3/45 is the direct equivalent from the original manufacturer, Vishay General Semiconductor - Diodes Division. It maintains identical electrical specifications and package configuration as the EDF1AS/27. The part carries Active product status, ensuring long-term availability and supply chain stability. This part is the preferred choice for direct replacement in existing designs.

Secondary Substitutes: DF005S and DF15005S-G

Both DF005S (onsemi) and DF15005S-G (Comchip Technology) meet all mandatory electrical and mechanical compatibility criteria. Both parts exceed the current rating of the original part (1.5 A vs. 1 A), providing additional design margin. Both maintain the required 50 V peak reverse voltage, operating temperature range, and package configuration.

DF005S carries a Not For New Designs status, making it suitable for legacy system support and maintenance applications but not recommended for new product development.

DF15005S-G carries Active product status, making it suitable for both new designs and ongoing production support.

All substitute parts maintain ROHS3 compliance and REACH Unaffected status, meeting regulatory requirements equivalent to the original part.

Frequently Asked Questions (FAQ)

Q: Can the EDF1AS-E3/45 be used as a direct replacement for the EDF1AS/27?

A: Yes. The EDF1AS-E3/45 is electrically and mechanically identical to the EDF1AS/27, with identical voltage, current, and thermal specifications. The primary difference is product status: EDF1AS-E3/45 is Active, while EDF1AS/27 is Obsolete. This makes EDF1AS-E3/45 the direct equivalent for replacement applications.

Q: What is the difference between the 1 A rating of EDF1AS/27 and the 1.5 A rating of DF005S and DF15005S-G?

A: The substitute parts have a higher average rectified current rating (1.5 A vs. 1 A). This means they can safely handle higher current loads. In applications where the original part was rated at 1 A, the 1.5 A rated substitutes will operate with additional thermal and electrical margin, making them functionally compatible and electrically superior for the same application.

Q: Are there package differences between the substitute parts?

A: All substitute parts maintain the 4-SMD, Gull Wing surface mount package configuration. While supplier device packages may differ in designation (DFS vs. 4-SDIP), the physical package footprint and mounting characteristics remain compatible with the original EDF1AS/27 design.

Q: Can DF005S be used in new product designs?

A: DF005S carries a Not For New Designs product status. While it meets all electrical and mechanical compatibility requirements, it is not recommended for new product development. For new designs, use EDF1AS-E3/45 or DF15005S-G, both of which carry Active product status.

Q: Do all substitute parts meet the same compliance requirements as the original part?

A: Yes. All substitute parts listed are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the EDF1AS/27. All parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.

Q: What is the forward voltage difference between the original part and the substitutes?

A: The EDF1AS/27 specifies 1.05 V maximum forward voltage at 1 A. The DF005S and DF15005S-G specify 1.1 V maximum forward voltage at their respective rated currents (1 A and 1.5 A). This 0.05 V difference is within typical design tolerances for rectifier applications and does not affect functional compatibility.