2KBP08M/1 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The 2KBP08M/1 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 800 V peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part is designed for through-hole mounting applications requiring standard bridge rectification in industrial and consumer electronics.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	800 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3.14 A
Current - Reverse Leakage @ Vr	5 µA @ 800 V
Operating Temperature Range	-55°C ~ 165°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM

Substitute Part Grouping Explanation

Substitute parts for the 2KBP08M/1 are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Voltage - Peak Reverse (Max): 800 V (exact match required)
Diode Type: Single Phase (exact match required)
Technology: Standard (exact match required)
Mounting Type: Through Hole (exact match required)

Secondary Compatibility Parameters:

Current - Average Rectified (Io): 2 A or higher
Voltage - Forward (Vf) (Max): 1.1 V or lower
Current - Reverse Leakage @ Vr: 5 µA or lower
Operating Temperature Range: Must encompass or exceed the application requirements

Three active substitute parts meet these criteria: VS-2KBP08 (Vishay), KBP08G (Diodes Incorporated), and KBP208G (SMC Diode Solutions). Each maintains the 800 V / 2 A core specifications while offering improved product status and compliance certifications.

Parameter Comparison

Parameter	2KBP08M/1	VS-2KBP08	KBP08G	KBP208G
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Diodes Incorporated	SMC Diode Solutions
Product Status	Obsolete	Active	Active	Active
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase
Voltage - Peak Reverse (Max)	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	2 A	2 A	1.5 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 3.14 A	1 V @ 1 A	1.1 V @ 1.5 A	1.1 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 800 V	10 µA @ 800 V	5 µA @ 800 V	5 µA @ 800 V
Operating Temperature Range	-55°C ~ 165°C (TJ)	-40°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, D-44	4-SIP, KBP	4-ESIP, KBP
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	Not Applicable	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

VS-2KBP08 (Vishay General Semiconductor - Diodes Division)

This part is the manufacturer-recommended substitute from Vishay, maintaining the same design lineage as the 2KBP08M/1. It is active in production and ROHS3 compliant. The D-44 package is mechanically compatible with through-hole mounting. The reverse leakage current is 10 µA at 800 V, which is higher than the original specification but remains within acceptable limits for standard bridge rectifier applications. The operating temperature range (-40°C ~ 150°C) is narrower than the original part, requiring verification for applications exceeding 150°C junction temperature.

KBP08G (Diodes Incorporated)

This part meets the 800 V voltage specification and maintains the 5 µA reverse leakage characteristic. However, the average rectified current rating is 1.5 A, which is lower than the 2 A requirement of the original part. This part is suitable only for applications where the actual current demand does not exceed 1.5 A. The operating temperature range extends to -65°C, providing broader low-temperature coverage. ROHS3 compliance and active product status support long-term availability.

KBP208G (SMC Diode Solutions)

This part provides exact current and voltage matching (800 V, 2 A) with identical reverse leakage specifications (5 µA @ 800 V). The 4-ESIP package maintains through-hole compatibility. ROHS3 compliance is confirmed. The REACH status is listed as affected, requiring compliance verification for applications subject to REACH regulations. The operating temperature range (-55°C ~ 150°C) matches the original part's lower bound.

For applications requiring the full 2 A current rating and standard operating temperature range, KBP208G provides the most direct electrical equivalent. For applications with lower current requirements (≤1.5 A), KBP08G offers extended low-temperature performance. VS-2KBP08 is the preferred choice when maintaining the Vishay product family is a design requirement.

Frequently Asked Questions (FAQ)

Q: Can KBP08G be used as a direct replacement for 2KBP08M/1?

A: KBP08G is not a direct replacement due to its 1.5 A average rectified current rating versus the 2 A requirement of the original part. It is suitable only for applications where actual current demand does not exceed 1.5 A. For full 2 A operation, use KBP208G or VS-2KBP08.

Q: What is the difference between the KBPM, D-44, and KBP package designations?

A: These are different through-hole package variants for single-phase bridge rectifiers. KBPM is the original Vishay package for the 2KBP08M/1. D-44 is the Vishay equivalent package used in VS-2KBP08. KBP is the standard package designation used by Diodes Incorporated and SMC Diode Solutions. All three are mechanically compatible with standard through-hole PCB layouts for 4-pin bridge rectifier configurations.

Q: Are all substitute parts RoHS compliant?

A: Yes, all three substitute parts (VS-2KBP08, KBP08G, and KBP208G) are ROHS3 compliant. The original 2KBP08M/1 is RoHS non-compliant, making substitution necessary for applications subject to RoHS regulations.

Q: What is the significance of the REACH status difference in KBP208G?

A: KBP208G is listed as REACH Affected, meaning it may contain substances of concern under REACH regulations. VS-2KBP08 and KBP08G are listed as REACH Unaffected. For applications subject to REACH compliance requirements, verify the specific substance declarations provided by SMC Diode Solutions for KBP208G.

Q: How do the operating temperature ranges affect part selection?

A: The original 2KBP08M/1 operates from -55°C to 165°C. VS-2KBP08 operates to 150°C, KBP08G to 150°C, and KBP208G to 150°C. All substitutes have a maximum operating temperature of 150°C, which is 15°C lower than the original. Applications requiring operation above 150°C junction temperature cannot use these substitutes.

Q: What is the impact of reverse leakage current differences?

A: The original 2KBP08M/1 and KBP08G/KBP208G specify 5 µA reverse leakage at 800 V. VS-2KBP08 specifies 10 µA at 800 V. For most standard rectification applications, this difference is negligible. For high-impedance or precision applications, the lower leakage of KBP208G or KBP08G may be preferred.

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