RS505-G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The RS505-G is a single-phase bridge rectifier manufactured by Comchip Technology, rated for 600 V peak reverse voltage with 5 A average rectified current. This component is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are widely used in power supply circuits, industrial equipment, and AC-to-DC conversion applications requiring through-hole mounting.

Substiute Parts

RS505-G

Comchip TechnologyIn Stock: 820RS505-G Datasheet

Current PartRFQ

GBU6J

Diotec SemiconductorIn Stock: 25833GBU6J Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS505-G is determined by the following critical parameters:

• Voltage Rating: Peak reverse voltage must be 600 V or greater to maintain circuit protection and reliability
• Current Rating: Average rectified current must meet or exceed 5 A to handle the design load
• Diode Type & Technology: Single-phase standard bridge rectifier topology must be preserved
• Mounting Type: Through-hole configuration required for PCB compatibility
• Package Form Factor: 4-SIP package family ensures mechanical and electrical fit

The GBU6J from Diotec Semiconductor meets these substitution criteria. While it features a higher current rating (4.2 A nominal, 6 A peak capability) and extended temperature range, it maintains the same voltage class, mounting method, and package family, making it functionally compatible for the RS505-G application.

Parameter Comparison

Engineering Selection Recommendations

The GBU6J is the qualified substitute for RS505-G applications based on the following factors:

• Product Status: GBU6J is actively manufactured and widely available, eliminating supply chain risk associated with the obsolete RS505-G
• Electrical Compatibility: Both devices maintain 600 V peak reverse voltage and single-phase bridge rectifier topology
• Compliance & Certifications: GBU6J carries RoHS3 compliance and REACH documentation availability, meeting modern regulatory requirements
• Thermal Performance: Extended operating temperature range (-50°C to 150°C) of GBU6J provides additional margin for high-temperature applications
• Leakage Characteristics: GBU6J demonstrates superior reverse leakage (5 µA vs. 10 µA), beneficial for low-leakage circuit designs

Current rating consideration: The GBU6J nominal average rectified current (4.2 A) is lower than the RS505-G (5 A). Circuit designs operating at or near 5 A continuous current require thermal analysis to confirm GBU6J suitability. For applications below 4.2 A, substitution is direct.

Frequently Asked Questions (FAQ)

Q: Can GBU6J directly replace RS505-G in all applications?

A: GBU6J is electrically and mechanically compatible for most applications. However, designs requiring continuous 5 A operation must account for the GBU6J's 4.2 A average rectified current rating. Thermal analysis is recommended for high-current designs.

Q: Are the package dimensions identical between RS505-G and GBU6J?

A: Both devices use 4-SIP through-hole packages within the same family (RS-5 and GBU respectively). Physical fit on standard PCB layouts is confirmed. Verify footprint dimensions against your specific PCB design if custom spacing is used.

Q: What is the difference in forward voltage drop between these devices?

A: Both devices specify 1 V maximum forward drop at their respective rated currents (5 A for RS505-G, 6 A for GBU6J). Forward voltage performance is equivalent for circuit design purposes.

Q: Does GBU6J meet current regulatory compliance standards?

A: Yes. GBU6J is RoHS3 compliant and REACH documentation is available upon request, meeting current environmental and safety regulations. RS505-G, being obsolete, may not carry current compliance certifications.

Q: What is the reverse leakage difference, and does it matter?

A: GBU6J exhibits 5 µA reverse leakage at 600 V, compared to 10 µA for RS505-G. This lower leakage is advantageous in precision rectifier circuits, filter applications, and low-power designs where leakage current affects performance.