RS406L Bridge Rectifier 800V 4A Single Phase Diode

Part Overview

The RS406L is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 800V peak reverse voltage and 4A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Bridge rectifiers in this voltage and current class are used in power supply circuits, battery charging systems, and AC-to-DC conversion applications requiring through-hole mounting. The RS406L uses the RS-4L package configuration, a standard 4-pin SIP format for single-phase rectification.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 800 V
Operating Temperature Range	-55°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, RS-4L
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution for the RS406L is determined by the following critical parameters:

Voltage - Peak Reverse (Max): 800 V minimum
Current - Average Rectified (Io): 4 A minimum
Diode Type: Single Phase
Mounting Type: Through Hole
Package Configuration: 4-SIP format

The RS406L has one parametric equivalent and three similar alternatives. The parametric equivalent maintains identical electrical specifications with improved compliance status. The similar alternatives exceed the current rating or operating temperature range while maintaining the same voltage class and through-hole mounting requirement.

Parameter Comparison

Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status	RoHS Status
RS406L	Micro Commercial Co	800 V	4 A	1.1 V @ 3 A	10 µA @ 800 V	-55°C ~ 125°C	4-SIP, RS-4L	Obsolete	RoHS non-compliant
RS406GL-BP	Micro Commercial Co	800 V	4 A	1.1 V @ 4 A	5 µA @ 800 V	-55°C ~ 125°C	4-SIP, RS-4L	Active	ROHS3 Compliant
GBU408-G	Comchip Technology	800 V	4 A	1 V @ 2 A	10 µA @ 800 V	-55°C ~ 150°C	4-SIP, GBU	Active	ROHS3 Compliant
GBU608-G	Comchip Technology	800 V	6 A	1 V @ 3 A	10 µA @ 800 V	-55°C ~ 150°C	4-SIP, GBU	Active	ROHS3 Compliant
GBU808-G	Comchip Technology	800 V	8 A	1 V @ 4 A	10 µA @ 800 V	-55°C ~ 150°C	4-SIP, GBU	Active	ROHS3 Compliant
GBU2508-G	Comchip Technology	800 V	4.2 A	1 V @ 12.5 A	10 µA @ 800 V	-55°C ~ 150°C	4-SIP, GBU	Active	ROHS3 Compliant

Engineering Selection Recommendations

RS406GL-BP is the primary substitute for RS406L. Both parts are manufactured by Micro Commercial Co, use identical RS-4L package configuration, and maintain the same electrical specifications. RS406GL-BP is currently in active production status with ROHS3 compliance, addressing the obsolescence and regulatory compliance limitations of the original part.

GBU408-G, GBU608-G, GBU808-G, and GBU2508-G are manufactured by Comchip Technology and meet or exceed the voltage and current requirements. These alternatives feature extended operating temperature ranges (-55°C ~ 150°C) and ROHS3 compliance. GBU408-G provides the closest current rating match at 4A. GBU608-G and GBU808-G offer higher current ratings for applications requiring additional thermal margin. GBU2508-G provides 4.2A current rating with enhanced forward voltage characteristics.

All substitute options maintain through-hole mounting in 4-SIP package format and are currently in active production status.

Frequently Asked Questions (FAQ)

Q: Can RS406GL-BP directly replace RS406L without circuit modification?

A: Yes. RS406GL-BP maintains identical voltage rating (800V), current rating (4A), operating temperature range (-55°C ~ 125°C), and package configuration (4-SIP, RS-4L). The parametric specifications are equivalent for direct substitution.

Q: What is the difference between RS406GL-BP and the Comchip alternatives?

A: RS406GL-BP is a parametric equivalent from the same manufacturer with identical specifications. Comchip alternatives (GBU408-G, GBU608-G, GBU808-G, GBU2508-G) use different package designations (GBU instead of RS-4L) and offer higher current ratings or extended temperature ranges. Pin compatibility must be verified for these alternatives.

Q: Are the GBU series parts pin-compatible with RS406L?

A: Both RS406L and GBU series use 4-SIP through-hole package format. However, the specific pin assignments may differ between RS-4L and GBU package designations. Physical verification of pin configuration is required before substitution.

Q: Which substitute offers the best compliance profile?

A: RS406GL-BP and all Comchip alternatives (GBU408-G, GBU608-G, GBU808-G, GBU2508-G) are ROHS3 compliant and currently in active production. RS406L is RoHS non-compliant and obsolete.

Q: Can I use GBU608-G or GBU808-G if my circuit only requires 4A?

A: Yes. GBU608-G (6A) and GBU808-G (8A) exceed the 4A requirement and will operate within specification in circuits designed for 4A. Higher current ratings provide additional thermal margin without affecting circuit function.

Q: What is the operating temperature difference between RS406L and Comchip alternatives?

A: RS406L operates from -55°C to 125°C. Comchip alternatives (GBU408-G, GBU608-G, GBU808-G, GBU2508-G) operate from -55°C to 150°C, providing 25°C additional high-temperature capability.

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