RS402L-BP Bridge Rectifier Single Phase 100V 4A Equivalent & Substitute Parts

Part Overview

The RS402L-BP is a single-phase bridge rectifier manufactured by Micro Commercial Co, rated for 100V peak reverse voltage and 4A average rectified current in a through-hole RS-4L package. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating packaging and availability constraints.

Key Parameters

Parameter	RS402L-BP
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	4 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 100 V
Operating Temperature Range	-55°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, RS-4L
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

Voltage - Peak Reverse (Max): 100 V minimum
Current - Average Rectified (Io): 4 A minimum
Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole
RoHS Status: ROHS3 Compliant

Package Considerations: The RS402L-BP uses the RS-4L package. Substitute parts using the GBU package (GBU401-G, GBU601-G, GBU801-G, GBU2501-G) are mechanically compatible through-hole alternatives. The RS402GL-BP maintains identical RS-4L packaging.

Thermal Operating Range: The RS402L-BP operates from -55°C to 125°C. Substitute parts with extended ranges (-55°C to 150°C) provide broader thermal compatibility and are acceptable for applications within the original temperature specification.

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
RS402L-BP	Micro Commercial Co	100 V	4 A	1.1 V @ 3 A	10 µA @ 100 V	-55°C ~ 125°C	4-SIP, RS-4L	Obsolete
RS402GL-BP	Micro Commercial Co	100 V	4 A	1.1 V @ 4 A	5 µA @ 50 V	-55°C ~ 150°C	4-SIP, RS-4L	Not For New Designs
GBU401-G	Comchip Technology	100 V	4 A	1 V @ 2 A	10 µA @ 100 V	-55°C ~ 150°C	4-SIP, GBU	Active
GBU2501-G	Comchip Technology	100 V	4.2 A	1 V @ 12.5 A	10 µA @ 50 V	-55°C ~ 150°C	4-SIP, GBU	Active
GBU601-G	Comchip Technology	100 V	6 A	1 V @ 3 A	10 µA @ 100 V	-55°C ~ 150°C	4-SIP, GBU	Active
GBU801-G	Comchip Technology	100 V	8 A	1 V @ 4 A	5 µA @ 100 V	-55°C ~ 150°C	4-SIP, GBU	Active

Engineering Selection Recommendations

RS402GL-BP (Micro Commercial Co): Direct equivalent with identical RS-4L packaging and electrical ratings. Extended operating temperature range to 150°C. Product status is "Not For New Designs," limiting suitability for new applications but acceptable for legacy system maintenance.

GBU401-G (Comchip Technology): Exact current and voltage match with active product status. GBU package provides mechanical compatibility through identical 4-SIP pinout. Lower forward voltage (1 V vs. 1.1 V) and extended thermal range (-55°C to 150°C) offer improved performance characteristics. Recommended for new designs and ongoing production.

GBU2501-G (Comchip Technology): Rated for 4.2A, exceeding the 4A requirement. 100V peak reverse voltage matches specification. Active product status with ROHS3 compliance. GBU package compatible. Suitable where slightly higher current capacity is acceptable.

GBU601-G (Comchip Technology): Rated for 6A, providing current margin above the 4A requirement. 100V peak reverse voltage matches specification. Active product status. GBU package compatible. Appropriate for applications requiring current headroom.

GBU801-G (Comchip Technology): Rated for 8A, providing maximum current margin. 100V peak reverse voltage matches specification. Active product status with lowest reverse leakage (5 µA @ 100V). GBU package compatible. Suitable for high-reliability applications or designs with future current expansion potential.

Frequently Asked Questions (FAQ)

Q: Can I use GBU package parts as direct replacements for the RS-4L package?

A: Yes. Both RS-4L and GBU packages use 4-SIP through-hole pinout configurations. Mechanical and electrical compatibility is maintained. Verify PCB footprint dimensions before substitution.

Q: What is the minimum current rating required for a substitute part?

A: The substitute must be rated for 4A average rectified current minimum. Parts rated above 4A (GBU2501-G at 4.2A, GBU601-G at 6A, GBU801-G at 8A) are acceptable and provide current margin.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original RS402L-BP specification.

Q: Why do some substitute parts have lower forward voltage ratings?

A: Forward voltage (Vf) varies based on diode junction design and measurement conditions. Lower Vf values (such as 1 V in GBU series parts versus 1.1 V in RS402L-BP) indicate improved efficiency and reduced heat dissipation. This is a beneficial characteristic for substitution.

Q: Can I use a substitute part with a higher operating temperature range?

A: Yes. Extended operating temperature ranges (such as -55°C to 150°C in GBU series parts versus -55°C to 125°C in RS402L-BP) provide broader environmental compatibility. The original application temperature specification remains the limiting factor.

Q: What is the difference between "Obsolete" and "Not For New Designs" product status?

A: Obsolete parts are no longer manufactured or supported. Not For New Designs parts remain available but are not recommended for new product development. For new applications, select parts with Active status (GBU401-G, GBU2501-G, GBU601-G, GBU801-G).

Q: Which substitute offers the best long-term availability?

A: GBU401-G, GBU2501-G, GBU601-G, and GBU801-G all carry Active product status from Comchip Technology, ensuring ongoing manufacturing and supply chain support.

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