2KBP01M-E4/51 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The 2KBP01M-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V peak reverse voltage and 2 A average rectified current in a through-hole KBPM package. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across a wide temperature range of -55°C to 165°C and meets ROHS3 compliance standards.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max)	1.1 V
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Operating Temperature Range	-55°C ~ 165°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 2KBP01M-E4/51 is determined by the following critical parameters:

Voltage - Peak Reverse (Max): Must equal or exceed 100 V
Current - Average Rectified (Io): Must equal or exceed 2 A
Diode Type: Must be Single Phase
Technology: Must be Standard
Mounting Type: Must be Through Hole
Package compatibility: Physical form factor must accommodate 4-SIP or equivalent through-hole configuration

The identified substitute parts meet these core electrical and mechanical requirements while maintaining functional equivalence in single-phase bridge rectifier applications.

Parameter Comparison

Parameter	2KBP01M-E4/51 (Main)	KBP01G	KBP201G
Manufacturer	Vishay General Semiconductor	Diodes Incorporated	SMC Diode Solutions
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	1.5 A	2 A
Voltage - Forward (Vf) (Max)	1.1 V @ 3.14 A	1.1 V @ 1.5 A	1.1 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Operating Temperature Range	-55°C ~ 165°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, KBP	4-ESIP, KBP
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

KBP201G is the primary substitute for the 2KBP01M-E4/51. This part matches the 2 A current rating exactly and maintains identical voltage specifications. KBP201G is manufactured by SMC Diode Solutions with active product status, ensuring long-term availability. The component is ROHS3 compliant and carries REACH Affected status. Operating temperature range is -55°C to 150°C, which covers the lower end of the original part's range but remains suitable for most industrial applications.

KBP01G is a secondary substitute manufactured by Diodes Incorporated. This part is rated for 1.5 A average rectified current, which is lower than the original 2 A specification. KBP01G is appropriate only for applications where the actual current demand does not exceed 1.5 A. This part offers an extended lower temperature limit of -65°C and is ROHS3 compliant with MSL rating of 1 (Unlimited).

Both substitute parts are available in active production status, ensuring supply chain continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can KBP01G directly replace the 2KBP01M-E4/51?

A: KBP01G is electrically compatible at the voltage level (100 V) but is rated for 1.5 A average rectified current versus the original 2 A specification. Use KBP01G only if your application current requirement does not exceed 1.5 A.

Q: Is KBP201G a direct replacement?

A: Yes. KBP201G matches the 2 A current rating and 100 V voltage specification of the 2KBP01M-E4/51. Both parts are single-phase standard bridge rectifiers with identical forward voltage characteristics and reverse leakage specifications.

Q: What is the difference between the KBPM and KBP package designations?

A: Both are 4-SIP through-hole packages with compatible physical form factors. The KBPM designation is specific to Vishay, while KBP is the industry standard designation used by other manufacturers. Physical pin spacing and mounting compatibility are maintained across these designations.

Q: Does the operating temperature range difference affect substitution?

A: The 2KBP01M-E4/51 operates to 165°C junction temperature, while KBP201G operates to 150°C. For applications requiring operation above 150°C, the original part specification must be maintained. For standard industrial applications operating below 150°C, KBP201G is suitable.

Q: Are there compliance differences between the substitute parts?

A: All three parts are ROHS3 compliant. KBP201G carries REACH Affected status, while the original part and KBP01G are REACH Unaffected. Verify REACH compliance requirements for your specific application and end-use region.

Q: What inventory status should I consider?

A: KBP201G has 1,270 pieces in stock, KBP01G has 778 pieces, and the original 2KBP01M-E4/51 has 759 pieces available. For new designs, prioritize active-status parts (KBP201G or KBP01G) to ensure long-term supply availability.

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