KBP02M-E4/51 Equivalent & Substitute Parts

Part Overview

The KBP02M-E4/51 is a single-phase bridge rectifier manufactured by Vishay General Semiconductor - Diodes Division, rated for 200 V 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. The part is housed in a 4-SIP KBPM package and is suitable for through-hole mounting applications requiring standard rectification technology.

Key Parameters

Parameter	Value
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max)	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
Diode Type	Single Phase
Technology	Standard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the KBP02M-E4/51 are qualified based on the following critical parameters:

Voltage - Peak Reverse (Max): 200 V (exact match required)
Diode Type: Single Phase (exact match required)
Technology: Standard (exact match required)
Mounting Type: Through Hole (exact match required)
Current - Average Rectified (Io): 1.5 A minimum (equal or higher acceptable)
Operating Temperature Range: Must encompass or exceed the original specification
RoHS Status: ROHS3 Compliant (regulatory requirement)

The identified substitutes meet these core electrical and mechanical criteria, enabling direct functional replacement in circuit applications designed for the KBP02M-E4/51.

Parameter Comparison

Parameter	KBP02M-E4/51 (Main)	KBP02G (Diodes Inc.)	KBP202G (SMC Diode)
Manufacturer	Vishay General Semiconductor	Diodes Incorporated	SMC Diode Solutions
Product Status	Obsolete	Active	Active
Voltage - Peak Reverse (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	1.5 A	1.5 A	2 A
Voltage - Forward (Vf) (Max)	1 V @ 1 A	1.1 V @ 1.5 A	1.1 V @ 2 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Operating Temperature Range	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	4-SIP, KBPM	4-SIP, KBP	4-ESIP
Diode Type	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	-	Tube	Tube

Engineering Selection Recommendations

Both KBP02G and KBP202G are active production parts suitable for replacing the obsolete KBP02M-E4/51. Selection between these substitutes depends on application-specific requirements:

The KBP02G (Diodes Incorporated) provides a direct electrical match with identical 1.5 A current rating and extends the operating temperature range to -65°C, offering enhanced low-temperature performance. This part maintains ROHS3 compliance and is available in active production status.

The KBP202G (SMC Diode Solutions) offers increased current capacity at 2 A, suitable for applications requiring higher current handling. This part maintains the original -55°C to 150°C temperature range and ROHS3 compliance. Note that REACH status is affected for this part, requiring verification against specific regulatory requirements for your application region.

Both substitutes maintain the critical electrical parameters: 200 V peak reverse voltage, 5 µA reverse leakage current, and standard rectification technology. Package variations (4-SIP KBP versus 4-ESIP) require physical verification for PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can KBP02G and KBP202G be used interchangeably with KBP02M-E4/51?

A: Both parts meet the core electrical specifications (200 V, single-phase, standard technology, through-hole mounting). However, physical package differences (KBP02G uses 4-SIP KBP; KBP202G uses 4-ESIP) require PCB footprint verification. The KBP202G's higher 2 A current rating is backward-compatible with 1.5 A circuit designs.

Q: What are the key differences between KBP02G and KBP202G?

A: The primary difference is current rating: KBP02G matches the original 1.5 A specification, while KBP202G provides 2 A capacity. KBP02G offers an extended lower temperature limit (-65°C vs. -55°C). Both maintain 200 V voltage rating and identical reverse leakage characteristics.

Q: Are there package compatibility concerns?

A: Yes. The original KBP02M-E4/51 uses a 4-SIP KBPM package. KBP02G uses 4-SIP KBP, and KBP202G uses 4-ESIP. Physical pin spacing and footprint must be verified against your PCB design before substitution.

Q: Do both substitutes meet RoHS requirements?

A: Both KBP02G and KBP202G are ROHS3 compliant. However, KBP202G has affected REACH status, requiring compliance verification for your specific application and target market.

Q: Which substitute should I select for new designs?

A: Selection depends on current requirements and regulatory scope. For applications requiring exactly 1.5 A with extended low-temperature operation, use KBP02G. For applications tolerating or benefiting from 2 A capacity without REACH-affected constraints, use KBP202G. Verify package footprint compatibility in both cases.

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