RS404L Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The RS404L is a single-phase bridge rectifier manufactured by Diodes Incorporated, rated for 400 V peak reverse voltage and 4 A average rectified current. This component is classified as Obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The RS404L features a through-hole RS-4L package configuration and operates across a temperature range of -55°C to 150°C.

Substiute Parts

RS404L

Diodes IncorporatedIn Stock: 996RS404L Datasheet

Current PartRFQ

GBU404

Taiwan Semiconductor CorporationIn Stock: 2158GBU404 Datasheet

MFR RecommendedRFQ

RS404GL-BP

Micro Commercial CoIn Stock: 4862RS404GL-BP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RS404L is determined by matching the following critical electrical and mechanical parameters:

• Diode Type: Single Phase
• Voltage - Peak Reverse (Max): 400 V
• Current - Average Rectified (Io): 4 A
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Two substitute parts meet these criteria: GBU404 (Taiwan Semiconductor Corporation) and RS404GL-BP (Micro Commercial Co). Both maintain electrical ratings, temperature specifications, and compliance certifications equivalent to the original RS404L.

Parameter Comparison

Engineering Selection Recommendations

GBU404 (Taiwan Semiconductor Corporation) is the primary substitute for RS404L applications. This part maintains identical electrical ratings (400 V, 4 A) and temperature specifications while offering improved reverse leakage characteristics (5 µA versus 10 µA). GBU404 is ROHS3 compliant and carries MSL 1 rating. The GBU package variant requires PCB layout verification for pin compatibility, though electrical function remains equivalent.

RS404GL-BP (Micro Commercial Co) serves as an alternative substitute with identical RS-4L package configuration to the original RS404L, eliminating package-related layout concerns. This part also delivers 400 V, 4 A ratings with 5 µA reverse leakage and full ROHS3 compliance. RS404GL-BP is designated "Not For New Designs," limiting its application to maintenance and legacy system support.

Both substitutes are electrically and mechanically compatible with RS404L circuit requirements. Selection between GBU404 and RS404GL-BP depends on package footprint constraints and design phase status.

Frequently Asked Questions (FAQ)

Q: Can GBU404 replace RS404L in existing designs? A: Yes. GBU404 meets all electrical specifications (400 V, 4 A) and temperature range (-55°C to 150°C). The primary consideration is package footprint; GBU package differs from RS-4L, requiring PCB layout verification.

Q: What is the difference between RS404GL-BP and RS404L? A: RS404GL-BP maintains the RS-4L package and electrical ratings of RS404L. The primary difference is manufacturer (Micro Commercial Co versus Diodes Incorporated) and product status (Not For New Designs). Electrical performance is equivalent.

Q: Are all substitutes ROHS3 compliant? A: Yes. RS404L, GBU404, and RS404GL-BP are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute has the lowest reverse leakage? A: Both GBU404 and RS404GL-BP exhibit 5 µA reverse leakage at 400 V, compared to 10 µA for the original RS404L.

Q: Can I use these substitutes in new product designs? A: GBU404 is suitable for new designs. RS404GL-BP carries a "Not For New Designs" designation and should be reserved for legacy system maintenance and repair applications.

Q: Do package differences affect electrical performance? A: No. Package differences (RS-4L versus GBU) are mechanical and footprint-related only. Electrical performance and ratings remain equivalent across all three parts.