KBP10M Bridge Rectifier 1 kV 1.5 A Single Phase Equivalent & Substitute Parts

Part Overview

The KBP10M is a single-phase bridge rectifier manufactured by onsemi, rated for 1 kV peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The KBP10M operates across a wide temperature range of -55°C to 165°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)	1 kV
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 1000 V
Operating Temperature Range	-55°C ~ 165°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM

Substitute Part Grouping Explanation

Substitution eligibility for the KBP10M is determined by the following critical parameters:

Diode Type: Single Phase (required match)
Technology: Standard (required match)
Voltage - Peak Reverse (Max): 1 kV (required match)
Mounting Type: Through Hole (required match)
Current - Average Rectified (Io): Equal to or greater than 1.5 A
Operating Temperature Range: Must encompass or exceed the original range where feasible
Package compatibility: Physical form factor must accommodate through-hole installation

Substitute parts are grouped into two categories:

Category 1: Direct Voltage and Current Match (1 kV, ≥1.5 A)

KBP10G (Diodes Incorporated): 1 kV, 1.5 A, active product status
VS-2KBP10 (Vishay): 1 kV, 2 A, active product status

Category 2: Higher Current Rating at 1 kV (1 kV, >1.5 A)

KBP210G (Diotec Semiconductor): 1 kV, 2 A, active product status

Category 3: Lower Voltage Ratings (Not Direct Substitutes)

VS-2KBP005, VS-2KBP02, VS-2KBP04, VS-2KBP06, VS-2KBP08: These parts operate at 50 V, 200 V, 400 V, 600 V, and 800 V respectively and are listed only for reference. They do not meet the 1 kV voltage requirement and are not suitable substitutes for the KBP10M in applications requiring 1 kV operation.

Parameter Comparison

Parameter	KBP10M (Main)	KBP10G	KBP210G	VS-2KBP10
Manufacturer	onsemi	Diodes Incorporated	Diotec Semiconductor	Vishay General Semiconductor
Product Status	Obsolete	Active	Active	Active
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	1 kV	1 kV	1 kV	1 kV
Current - Average Rectified (Io)	1.5 A	1.5 A	1.2 A	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1.1 V @ 1.5 A	1.1 V @ 2 A	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 1000 V	5 µA @ 1000 V	5 µA @ 1000 V	10 µA @ 1000 V
Operating Temperature Range	-55°C ~ 165°C	-65°C ~ 150°C	-50°C ~ 150°C	-40°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, KBP	4-SIP, KBP	4-SIP, D-44
RoHS Status	Not specified	ROHS3 Compliant	Not applicable	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	Vendor Undefined	REACH Unaffected

Engineering Selection Recommendations

Primary Substitute: KBP10G (Diodes Incorporated)

KBP10G is the most direct equivalent to KBP10M. It matches the 1 kV voltage rating and 1.5 A current specification exactly. KBP10G holds active product status with ROHS3 compliance and REACH unaffected certification. The operating temperature range of -65°C to 150°C covers the lower end of the KBP10M range but does not extend to the original 165°C maximum. Forward voltage is slightly elevated at 1.1 V versus 1 V, which may require thermal analysis in current-limited applications. KBP10G is available in high inventory (11,733 units) and packaged in tube format.

Secondary Substitute: VS-2KBP10 (Vishay General Semiconductor)

VS-2KBP10 provides a 1 kV, 2 A rating, offering higher current capacity than the KBP10M requirement. This part is active and ROHS3 compliant with REACH unaffected status. The operating temperature range of -40°C to 150°C does not extend to the original -55°C minimum or 165°C maximum. Forward voltage matches the original specification at 1 V @ 1 A. Reverse leakage is higher at 10 µA compared to 5 µA. The D-44 package differs from the original KBPM package but maintains 4-SIP through-hole form factor compatibility. Inventory availability is adequate at 1,525 units.

Alternative Consideration: KBP210G (Diotec Semiconductor)

KBP210G operates at 1 kV with 2 A current rating. Product status is active, but RoHS status is not applicable and REACH status is vendor undefined, limiting compliance documentation. The operating temperature range of -50°C to 150°C does not meet the original -55°C minimum or 165°C maximum specifications. Current rating of 1.2 A falls below the KBP10M requirement of 1.5 A, making this part unsuitable for direct substitution. High inventory (20,009 units) is available in box packaging.

Not Recommended: VS-2KBP Series (50 V to 800 V)

Parts VS-2KBP005, VS-2KBP02, VS-2KBP04, VS-2KBP06, and VS-2KBP08 operate at voltage ratings below 1 kV and do not meet the electrical requirements for KBP10M substitution in 1 kV applications.

Frequently Asked Questions (FAQ)

Q: Can KBP10G be used as a direct replacement for KBP10M?

A: KBP10G is electrically compatible for 1 kV, 1.5 A applications. Both parts are single-phase standard bridge rectifiers with matching voltage and current ratings. The primary consideration is the operating temperature range: KBP10G extends to -65°C at the low end but only to 150°C at the high end, whereas KBP10M reaches 165°C. Applications operating above 150°C require thermal analysis or selection of an alternative part.

Q: Why is VS-2KBP10 rated for 2 A when KBP10M is 1.5 A?

A: Higher current ratings indicate greater current-handling capacity. VS-2KBP10 can safely operate at 2 A average rectified current, exceeding the KBP10M specification of 1.5 A. This provides design margin in applications where the KBP10M operates near its rated current limit. However, the operating temperature range of -40°C to 150°C is narrower than the original KBP10M specification.

Q: Are the package differences between KBPM, KBP, and D-44 significant?

A: All three packages are 4-SIP through-hole form factors suitable for PCB mounting. KBPM and KBP are mechanically similar variants of the same package family. The D-44 package used by Vishay is also a 4-SIP through-hole configuration. Physical dimensions may vary slightly, requiring verification against PCB footprint specifications before implementation. Pin configuration and lead spacing should be confirmed in component datasheets.

Q: What is the significance of the forward voltage difference between KBP10M (1 V) and KBP10G (1.1 V)?

A: Forward voltage drop affects power dissipation and thermal performance. The 0.1 V difference at rated current translates to approximately 10% higher power loss in KBP10G. In applications with tight thermal budgets or high ambient temperatures, this difference may require heatsink recalculation or thermal simulation to ensure the component operates within safe limits.

Q: Why do some substitute parts have higher reverse leakage current?

A: Reverse leakage current (5 µA for KBP10M versus 10 µA for VS-2KBP10) reflects manufacturing process variations and semiconductor material characteristics. Higher leakage increases standby power consumption and heat generation. For DC power supply applications with continuous operation, this difference is typically negligible. For battery-powered or low-power standby applications, the lower leakage of KBP10M or KBP10G may be preferable.

Q: Is RoHS compliance required for my application?

A: RoHS compliance is mandatory for products sold in the European Union and many other markets. KBP10G and VS-2KBP10 are both ROHS3 compliant. KBP210G lists RoHS status as not applicable, which may indicate an older product line or limited compliance documentation. Verify RoHS requirements with your procurement and regulatory teams before finalizing component selection.

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