2KBP08M Bridge Rectifier Single Phase 800V 2A Equivalent & Substitute Parts

Part Overview

The 2KBP08M is a single-phase bridge rectifier manufactured by onsemi, rated for 800V peak reverse voltage and 2A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 2KBP08M operates across a wide temperature range of -55°C to 150°C and is housed in a 4-SIP KBPM package for through-hole mounting applications.

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 ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 2KBP08M are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Voltage - Peak Reverse (Max): 800 V minimum
Current - Average Rectified (Io): 2 A or greater
Diode Type: Single Phase
Technology: Standard
Mounting Type: Through Hole
Package / Case: 4-SIP or equivalent through-hole configuration

Parts are categorized into two groups:

Group 1: Direct Electrical Equivalents (800V, 2A) These parts maintain identical voltage and current ratings with active product status and modern compliance certifications.

Group 2: Voltage-Reduced Alternatives (200V-1kV, 2A) These parts share the 2A current rating and through-hole mounting but operate at different voltage ratings. Selection depends on circuit voltage requirements.

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
2KBP08M	onsemi	800 V	2 A	1.1 V @ 3.14 A	5 µA @ 800 V	-55°C ~ 150°C	4-SIP, KBPM	Obsolete	Not specified
KBP08G	Diodes Incorporated	800 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 800 V	-65°C ~ 150°C	4-SIP, KBP	Active	ROHS3 Compliant
KBP208G	SMC Diode Solutions	800 V	2 A	1.1 V @ 2 A	5 µA @ 800 V	-55°C ~ 150°C	4-ESIP	Active	ROHS3 Compliant
VS-2KBP02	Vishay General Semiconductor - Diodes Division	200 V	2 A	1 V @ 1 A	10 µA @ 200 V	-40°C ~ 150°C	4-SIP, D-44	Active	ROHS3 Compliant
VS-2KBP04	Vishay General Semiconductor - Diodes Division	400 V	2 A	1 V @ 1 A	10 µA @ 400 V	-40°C ~ 150°C	4-SIP, D-44	Active	ROHS3 Compliant
VS-2KBP06	Vishay General Semiconductor - Diodes Division	600 V	2 A	1 V @ 1 A	10 µA @ 600 V	-40°C ~ 150°C	4-SIP, D-44	Active	ROHS3 Compliant
VS-2KBP08	Vishay General Semiconductor - Diodes Division	800 V	2 A	1 V @ 1 A	10 µA @ 800 V	-40°C ~ 150°C	4-SIP, D-44	Active	ROHS3 Compliant
VS-2KBP10	Vishay General Semiconductor - Diodes Division	1 kV	2 A	1 V @ 1 A	10 µA @ 1000 V	-40°C ~ 150°C	4-SIP, D-44	Active	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: KBP208G (SMC Diode Solutions)

KBP208G provides the closest electrical match to 2KBP08M with identical 800V and 2A ratings. The part is active and ROHS3 compliant. Package configuration is 4-ESIP, which maintains through-hole mounting compatibility. This part is recommended for direct replacement in new designs and ongoing production.

Secondary Substitute: VS-2KBP08 (Vishay General Semiconductor - Diodes Division)

VS-2KBP08 matches the 800V and 2A electrical specifications and is active with ROHS3 compliance. Operating temperature range is -40°C to 150°C, which is narrower than the original -55°C to 150°C. The 4-SIP D-44 package maintains through-hole mounting. This part is suitable for applications not requiring the extended low-temperature performance of the original.

Alternative Substitute: KBP08G (Diodes Incorporated)

KBP08G operates at 800V but with reduced current rating of 1.5A. This part is active and ROHS3 compliant with an extended operating temperature range of -65°C to 150°C. Selection of this part requires verification that circuit current requirements do not exceed 1.5A average rectified current.

Voltage-Rated Alternatives: VS-2KBP02, VS-2KBP04, VS-2KBP06, VS-2KBP10

These Vishay parts maintain the 2A current rating and through-hole mounting but operate at different voltage ratings (200V, 400V, 600V, and 1kV respectively). All are active and ROHS3 compliant. Selection depends on actual circuit voltage requirements. These parts are suitable only when the application voltage requirement differs from 800V.

Frequently Asked Questions (FAQ)

Q: Can KBP08G replace 2KBP08M directly?

A: KBP08G is electrically compatible at 800V but has a reduced current rating of 1.5A versus 2A. Direct replacement is possible only if circuit average rectified current does not exceed 1.5A. Verify actual circuit current requirements before substitution.

Q: What is the difference between KBP208G and VS-2KBP08?

A: Both parts are rated 800V and 2A. KBP208G uses a 4-ESIP package while VS-2KBP08 uses a 4-SIP D-44 package. Both are through-hole mounted. KBP208G has REACH Affected status while VS-2KBP08 has REACH Unaffected status. Package footprint differences may affect PCB layout compatibility.

Q: Can I use VS-2KBP06 (600V) in place of 2KBP08M (800V)?

A: No. VS-2KBP06 is rated for 600V peak reverse voltage, which is insufficient for circuits designed for 800V operation. Using an under-rated part creates risk of component failure and circuit malfunction.

Q: Are all substitute parts RoHS compliant?

A: KBP208G and all Vishay VS-2KBP series parts listed are ROHS3 compliant. The original 2KBP08M does not specify RoHS status. Verify RoHS compliance requirements for your application before final part selection.

Q: What is the temperature range difference between 2KBP08M and VS-2KBP08?

A: 2KBP08M operates from -55°C to 150°C while VS-2KBP08 operates from -40°C to 150°C. The original part supports extended low-temperature operation. If your application requires operation below -40°C, VS-2KBP08 is not suitable.

Q: Do all substitute parts use the same package footprint?

A: No. 2KBP08M uses 4-SIP KBPM, KBP08G uses 4-SIP KBP, KBP208G uses 4-ESIP, and Vishay parts use 4-SIP D-44. While all are through-hole mounted, physical dimensions and pin spacing may differ. Verify PCB footprint compatibility before substitution.

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