RS401L Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The RS401L is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 50 V peak reverse voltage and 4 A average rectified current. This component is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement continuity. The RS401L features a through-hole RS-4L package configuration suitable for standard PCB assembly applications.

Substiute Parts

RS401L

Diodes IncorporatedIn Stock: 1160RS401L Datasheet

Current PartRFQ

GBU4005

SMC Diode SolutionsIn Stock: 2098GBU4005 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RS401L is determined by equivalence across the following critical electrical and mechanical parameters:

• Diode Type: Single Phase bridge rectifier configuration
• Voltage Rating: 50 V peak reverse voltage (Vrrm)
• Current Rating: 4 A average rectified current (Io)
• Mounting: Through-hole technology
• Operating Temperature: -55°C to 150°C junction temperature range
• Compliance: ROHS3 and REACH compliance status

The GBU4005 meets all substitution criteria within these defined parameters. Both components operate at identical voltage and current ratings with compatible through-hole mounting and thermal specifications.

Parameter Comparison

Engineering Selection Recommendations

The GBU4005 from SMC Diode Solutions is a direct functional equivalent for the obsolete RS401L. Both components share identical electrical ratings (50 V, 4 A) and thermal operating range (-55°C to 150°C). The GBU4005 maintains ROHS3 and REACH compliance, ensuring regulatory alignment with the original specification.

The GBU4005 demonstrates superior reverse leakage characteristics (5 µA versus 10 µA at 50 V), indicating improved long-term reliability. Forward voltage performance is within acceptable tolerance for standard bridge rectifier applications. The component is currently in active production status with established supply availability, providing procurement continuity for designs requiring RS401L replacement.

Package compatibility between RS-4L and GBU (4-ESIP) configurations requires mechanical verification during PCB layout transition, though both employ standard through-hole mounting technology.

Frequently Asked Questions (FAQ)

Q: Can the GBU4005 directly replace the RS401L without circuit modification?

A: The GBU4005 meets all electrical specifications (50 V, 4 A, -55°C to 150°C) required for RS401L substitution. Package geometry differences (RS-4L versus 4-ESIP) require PCB layout verification to confirm mechanical fit and pin alignment.

Q: What is the significance of the forward voltage difference between RS401L and GBU4005?

A: The RS401L specifies 1 V maximum forward voltage at 3 A, while the GBU4005 specifies 1.1 V at 4 A. This 0.1 V difference is within normal manufacturing tolerance for standard bridge rectifier technology and does not affect circuit functionality in typical applications.

Q: Why is the GBU4005 reverse leakage lower than the RS401L?

A: The GBU4005 exhibits 5 µA reverse leakage compared to the RS401L's 10 µA at 50 V. This represents improved semiconductor processing and indicates enhanced long-term reliability characteristics in the substitute component.

Q: Are both components compliant with current regulatory requirements?

A: Both the RS401L and GBU4005 maintain ROHS3 and REACH compliance status, ensuring compatibility with current environmental and hazardous substance regulations.

Q: What should be verified before implementing the GBU4005 as a substitute?

A: Verify through-hole pin spacing and PCB pad layout compatibility between RS-4L and GBU package configurations. Confirm that circuit board assembly equipment can accommodate the substitute package geometry without modification to existing tooling or fixtures.