Equivalent & Substitute Parts for 2KBP10M-M4/51

Part Overview

The 2KBP10M-M4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 1 kV peak reverse voltage and 2 A average rectified current. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Bridge rectifiers in this voltage and current class are widely used in AC-to-DC conversion applications requiring through-hole mounting in 4-SIP KBPM packaging.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	1 kV
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max)	1.1 V @ 3.14 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
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 2KBP10M-M4/51 is determined by the following critical parameters:

Voltage Rating: Peak reverse voltage must be 1 kV or greater
Current Rating: Average rectified current must meet or exceed 2 A
Diode Type: Single-phase bridge rectifier configuration
Technology: Standard rectifier technology
Mounting: Through-hole mounting required
Package Compatibility: 4-SIP form factor (KBP or KBPM variants acceptable)
Reverse Leakage: Maximum 5 µA @ 1000 V

The identified substitute parts meet these core electrical and mechanical criteria, enabling direct functional replacement in applications designed for the 2KBP10M-M4/51.

Parameter Comparison

Parameter	2KBP10M-M4/51 (Vishay)	KBP10G (Diodes Inc.)	KBP210G (Diotec)
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
Voltage - Peak Reverse (Max)	1 kV	1 kV	1 kV
Current - Average Rectified (Io)	2 A	1.5 A	1.2 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 @ 1000 V	5 µA @ 1000 V	5 µA @ 1000 V
Operating Temperature Range	-55°C ~ 165°C (TJ)	-65°C ~ 150°C (TJ)	-50°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, KBP	4-SIP, KBP
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not applicable

Engineering Selection Recommendations

KBP10G (Diodes Incorporated) is an active product with ROHS3 compliance matching the original part. This substitute carries a lower average rectified current rating of 1.5 A compared to the 2 A specification of the 2KBP10M-M4/51. Selection of this part requires confirmation that the application does not demand the full 2 A current capacity. The operating temperature range of -65°C to 150°C is narrower than the original at the upper limit (150°C vs. 165°C).

KBP210G (Diotec Semiconductor) is an active product with the same 1 kV voltage rating and comparable forward voltage characteristics. This part specifies 1.2 A average rectified current, which is below the 2 A requirement of the original part. RoHS and REACH compliance status are not defined for this manufacturer offering. The operating temperature range of -50°C to 150°C is narrower than the original specification.

Both substitute parts share identical reverse leakage characteristics and 4-SIP through-hole packaging with the original. Selection between substitutes depends on application current requirements and compliance documentation needs.

Frequently Asked Questions (FAQ)

Q: Can KBP10G or KBP210G be used as direct replacements for 2KBP10M-M4/51?

A: Both parts meet the core voltage rating (1 kV) and reverse leakage specifications (5 µA @ 1000 V). However, both substitutes have lower average rectified current ratings (1.5 A and 1.2 A respectively) compared to the original 2 A specification. Direct replacement is possible only if the application circuit operates below these current limits.

Q: Are the KBP and KBPM packages mechanically interchangeable?

A: Both KBP and KBPM are 4-SIP through-hole packages. Physical compatibility with PCB footprints designed for KBPM should be confirmed, as minor dimensional variations may exist between manufacturer implementations.

Q: What is the significance of the obsolete status of 2KBP10M-M4/51?

A: Obsolete status indicates the part is no longer manufactured by Vishay. The identified substitutes from Diodes Incorporated and Diotec Semiconductor are active products with current manufacturing support and documented availability.

Q: How do operating temperature ranges affect substitution?

A: The original part operates from -55°C to 165°C. KBP10G operates to 150°C maximum, and KBP210G to 150°C maximum. Applications requiring operation above 150°C junction temperature cannot use these substitutes.

Q: What compliance differences exist between the substitute parts?

A: KBP10G carries ROHS3 compliance matching the original. KBP210G does not specify RoHS or REACH compliance status. Applications with regulatory compliance requirements should prioritize KBP10G.

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