KBP201G C2 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The KBP201G C2 is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, rated for 50 V peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making identification of suitable substitute parts necessary for ongoing design support and procurement continuity. Bridge rectifiers in this category are used in AC-to-DC conversion applications requiring through-hole mounting and standard rectification technology.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	50 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A
Current - Reverse Leakage @ Vr	10 µA @ 50 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBP
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the KBP201G C2 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole
Package / Case: KBP form factor
Current - Average Rectified (Io): 2 A (exact match required)
Operating Temperature Range: -55°C ~ 150°C (TJ)

Allowable Variation:

Voltage - Peak Reverse (Max): The substitute part may exceed the original specification. The KBP201G C2 rated at 50 V can be substituted with parts rated at higher voltages, provided all other parameters remain compatible.
Voltage - Forward (Vf) and Current - Reverse Leakage: Minor variations within standard rectifier performance tolerances are acceptable.

The KBP201G from SMC Diode Solutions meets these criteria as a direct substitute, with the exception of elevated peak reverse voltage (100 V versus 50 V), which represents an improvement in voltage rating rather than a limitation.

Parameter Comparison

Parameter	KBP201G C2 (Taiwan Semiconductor)	KBP201G (SMC Diode Solutions)	Compatibility Notes
Manufacturer	Taiwan Semiconductor Corporation	SMC Diode Solutions	Different manufacturer, same part number base
Product Status	Obsolete	Active	Substitute is currently in production
Diode Type	Single Phase	Single Phase	Identical
Technology	Standard	Standard	Identical
Voltage - Peak Reverse (Max)	50 V	100 V	Substitute rated higher; acceptable for 50 V applications
Current - Average Rectified (Io)	2 A	2 A	Identical
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A	1.1 V @ 2 A	Substitute exhibits lower forward voltage drop
Current - Reverse Leakage @ Vr	10 µA @ 50 V	5 µA @ 100 V	Substitute exhibits lower leakage current
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package / Case	4-SIP, KBP	4-ESIP	Both KBP form factor; minor package variant
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

The KBP201G manufactured by SMC Diode Solutions is a direct functional substitute for the obsolete KBP201G C2. Selection of this substitute is supported by the following factors:

Product Status: The substitute part is classified as Active, ensuring continued availability and manufacturing support, whereas the original part is Obsolete.

Compliance and Certifications: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1, Unlimited), ensuring compatibility with current manufacturing and environmental standards.

Electrical Performance: The substitute part meets or exceeds all critical electrical parameters. The elevated peak reverse voltage rating (100 V versus 50 V) provides additional design margin for 50 V applications. The lower forward voltage drop (1.1 V versus 1.2 V) and reduced reverse leakage current (5 µA versus 10 µA) represent performance improvements.

Mechanical Compatibility: Both parts utilize through-hole mounting in the KBP package form factor, ensuring direct PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the KBP201G from SMC Diode Solutions be used as a direct replacement for the KBP201G C2?

A: Yes. Both parts share identical current ratings (2 A), operating temperature ranges (-55°C ~ 150°C), mounting type (through-hole), and package form factor (KBP). The substitute part is electrically compatible with applications designed for the original component.

Q: What is the significance of the higher voltage rating (100 V) on the substitute part?

A: The substitute part is rated for 100 V peak reverse voltage compared to the original 50 V rating. This higher rating does not create incompatibility; it provides additional voltage margin. Applications operating at 50 V or below will function correctly with the higher-rated substitute.

Q: Are there any differences in package dimensions between the 4-SIP and 4-ESIP variants?

A: Both designations refer to KBP form factor packages used for single-phase bridge rectifiers. The minor variant designation (4-ESIP versus 4-SIP) does not affect PCB footprint compatibility for through-hole mounting applications.

Q: Does the lower forward voltage drop of the substitute part affect circuit operation?

A: The substitute part exhibits a forward voltage drop of 1.1 V at 2 A compared to 1.2 V for the original part. This 0.1 V reduction represents improved efficiency and lower power dissipation. Circuits designed for the original part will operate correctly with this lower voltage drop.

Q: Are both parts compliant with current environmental and regulatory standards?

A: Yes. Both the original KBP201G C2 and the substitute KBP201G from SMC Diode Solutions are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, meeting current manufacturing and environmental requirements.

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