FRA804GF-BP Equivalent & Substitute Parts

Part Overview

The FRA804GF-BP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 8 A average rectified current in a through-hole TO-220-2 isolated tab package. This component is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. The fast recovery characteristic (≤500 ns) and 150 ns reverse recovery time position this diode for applications requiring rapid switching performance in power conversion and rectification circuits.

Substiute Parts

FRA804GF-BP

Micro Commercial CoIn Stock: 819FRA804GF-BP Datasheet

Current PartRFQ

FESF8GT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 738FESF8GT-E3/45 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FRA804GF-BP is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 400 V
• Current - Average Rectified (Io): 8 A
• Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 8 A
• Mounting Type: Through Hole
• Package / Case: TO-220-2 Isolated Tab
• Operating Temperature Range: -55°C to 150°C

Acceptable Variation Parameters:

• Reverse Recovery Time (trr): Faster recovery times are acceptable (lower values indicate improved performance)
• Current - Reverse Leakage @ Vr: Equivalent or lower leakage current is acceptable
• Product Status: Active status preferred for ongoing availability

The FESF8GT-E3/45 manufactured by Vishay General Semiconductor - Diodes Division meets all critical matching parameters and demonstrates improved reverse recovery time (50 ns versus 150 ns), making it a direct functional equivalent with enhanced switching characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: FESF8GT-E3/45

The FESF8GT-E3/45 is the direct equivalent for the obsolete FRA804GF-BP. Both components share identical electrical ratings for voltage, current, and forward voltage drop. The substitute offers the following advantages:

• Active Product Status: The FESF8GT-E3/45 is currently in active production, ensuring long-term availability and supply chain continuity.
• Improved Switching Performance: The reverse recovery time of 50 ns is significantly faster than the original 150 ns, resulting in reduced switching losses and improved efficiency in rectification circuits.
• Regulatory Compliance: Both components maintain ROHS3 compliance and identical moisture sensitivity ratings, ensuring compatibility with environmental and regulatory requirements.
• Packaging Compatibility: Both components utilize the TO-220-2 isolated tab package with ITO-220AC supplier device package designation, ensuring direct mechanical and thermal interface compatibility.

The slightly elevated reverse leakage current (10 µA versus 5 µA at 400 V) remains within acceptable limits for general-purpose rectification applications and does not compromise circuit performance in standard power conversion topologies.

Frequently Asked Questions (FAQ)

Q: Can the FESF8GT-E3/45 be used as a direct replacement for the FRA804GF-BP in existing designs?

A: Yes. The FESF8GT-E3/45 meets all critical electrical and mechanical specifications of the FRA804GF-BP. Both components are rated for 400 V reverse voltage, 8 A average rectified current, and utilize identical TO-220-2 isolated tab packaging. No circuit modifications are required for substitution.

Q: What is the significance of the faster reverse recovery time in the FESF8GT-E3/45?

A: The FESF8GT-E3/45 exhibits a reverse recovery time of 50 ns compared to 150 ns in the FRA804GF-BP. Faster reverse recovery reduces switching losses during the transition from forward to reverse bias, improving overall circuit efficiency and reducing thermal stress on the component.

Q: Are there any thermal or mounting considerations when substituting these components?

A: Both components utilize identical TO-220-2 isolated tab packaging with the same thermal interface characteristics. Mounting hardware, heatsink requirements, and thermal management strategies remain unchanged between the original and substitute part.

Q: How does the reverse leakage current difference affect circuit operation?

A: The FESF8GT-E3/45 exhibits 10 µA reverse leakage at 400 V compared to 5 µA in the FRA804GF-BP. This difference is negligible in general-purpose rectification applications and does not impact circuit performance or reliability in standard power conversion topologies.

Q: What is the packaging difference between "TO-220-2 Isolated Tab" and "TO-220-2 Full Pack, Isolated Tab"?

A: Both designations refer to the same physical TO-220-2 package with isolated tab configuration. The terminology variation reflects different supplier documentation conventions and does not indicate functional or mechanical differences.

Q: Are both components RoHS compliant?

A: Yes. Both the FRA804GF-BP and FESF8GT-E3/45 are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing and hazardous substance restrictions.

Q: What is the moisture sensitivity level for these components?

A: Both components carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture control requirements. Standard handling and storage practices are sufficient for both parts.