KBP10M-E4/51 Equivalent & Substitute Parts

Part Overview

The KBP10M-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 1 kV peak reverse voltage and 1.5 A average rectified current. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Bridge rectifiers in this voltage and current class are fundamental in AC-to-DC conversion applications across industrial and consumer electronics.

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)	1.1 V
Current - Reverse Leakage @ Vr	5 µA @ 1000 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the KBP10M-E4/51 is determined by the following critical parameters:

Peak reverse voltage rating of 1 kV (exact match required)
Single-phase bridge rectifier configuration (exact match required)
Standard rectifier technology (exact match required)
Through-hole mounting type (exact match required)
4-SIP package family compatibility (KBPM or KBP variants acceptable)

The identified substitute parts KBP10G and KBP210G meet these core electrical and mechanical requirements. Variations in average rectified current (1.5 A vs. 1.2 A), forward voltage characteristics, and operating temperature ranges represent acceptable deviations within the functional scope of bridge rectifier substitution, provided the application does not impose stricter requirements than the substitute part specifications.

Parameter Comparison

Parameter	KBP10M-E4/51 (Main)	KBP10G (Substitute)	KBP210G (Substitute)
Manufacturer	Vishay General Semiconductor - Diodes Division	Diodes Incorporated	Diotec Semiconductor
Product Status	Obsolete	Active	Active
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)	1.5 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 ~ 150°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not applicable

Engineering Selection Recommendations

KBP10G is the primary substitute for the KBP10M-E4/51. Both parts are ROHS3 compliant, share identical electrical ratings for peak reverse voltage and average rectified current, and maintain equivalent forward voltage characteristics. The KBP10G is manufactured by Diodes Incorporated and carries active product status, ensuring long-term availability and supply chain stability.

KBP210G is a secondary substitute option. While it maintains the 1 kV peak reverse voltage and standard bridge rectifier configuration, the average rectified current is rated at 1.2 A compared to the 1.5 A specification of the main part. This lower current rating may limit applicability in designs requiring the full 1.5 A capacity. Additionally, KBP210G does not carry ROHS3 compliance certification. This part is suitable only for applications where the 1.2 A current rating is sufficient and RoHS compliance is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can KBP10G be used as a direct replacement for KBP10M-E4/51?

A: Yes. KBP10G meets all critical electrical parameters: 1 kV peak reverse voltage, 1.5 A average rectified current, 1.1 V forward voltage, and 5 µA reverse leakage current. Both parts use 4-SIP through-hole packaging and are ROHS3 compliant. The package designations (KBPM vs. KBP) are compatible variants within the same family.

Q: What is the difference between KBP10G and KBP210G?

A: The primary difference is average rectified current: KBP10G is rated for 1.5 A, while KBP210G is rated for 1.2 A. Both maintain 1 kV peak reverse voltage and standard bridge rectifier characteristics. KBP10G is ROHS3 compliant; KBP210G is not. KBP10G is the preferred substitute when full 1.5 A capacity is required.

Q: Are the package dimensions identical between KBP10M-E4/51, KBP10G, and KBP210G?

A: All three parts use 4-SIP through-hole package families (KBPM and KBP variants). Physical compatibility for PCB mounting is maintained across these parts.

Q: Why is the KBP10M-E4/51 obsolete?

A: The KBP10M-E4/51 is classified as obsolete by Vishay General Semiconductor - Diodes Division. Active substitute parts from other manufacturers (KBP10G from Diodes Incorporated and KBP210G from Diotec Semiconductor) provide equivalent functionality and are recommended for new designs and production.

Q: Does operating temperature range affect substitution?

A: The KBP10M-E4/51 operates from -55°C to 150°C. KBP10G extends the lower limit to -65°C, providing a wider operating range. KBP210G operates from -50°C to 150°C. For applications within the -55°C to 150°C window, all three parts are compatible. Applications requiring operation below -55°C should use KBP10G.

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