3N248 Bridge Rectifier Single Phase 200V 1.5A - Equivalent & Substitute Parts

Part Overview

The 3N248 is a single-phase bridge rectifier manufactured by onsemi, rated for 200V peak reverse voltage and 1.5A average rectified current in a 4-SIP KBPM through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. Bridge rectifiers in this voltage and current class are used in AC-to-DC conversion applications requiring standard rectification technology.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	200 V
Current - Average Rectified (Io)	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A
Current - Reverse Leakage @ Vr	5 µA @ 200 V
Operating Temperature Range	-55°C ~ 165°C (TJ)
Mounting Type	Through Hole
Package / Case	4-SIP, KBPM
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 3N248 are selected based on the following critical parameters that must align with the original specification:

Diode Type: Single Phase (all substitutes must maintain this topology)
Technology: Standard rectification (no fast recovery or Schottky variants)
Voltage - Peak Reverse (Max): 200 V minimum (substitutes at or above this rating are acceptable)
Current - Average Rectified (Io): 1.5 A minimum (substitutes at or above this rating are acceptable)
Mounting Type: Through Hole (package form factor compatibility)

Substitutes are grouped into two categories:

Category A - Direct Voltage/Current Match (200V, 1.5A-2A): Parts with identical or marginally higher current ratings at the same 200V specification, maintaining pin-compatible or functionally equivalent packages.

Category B - Higher Voltage Ratings (400V-1000V, 2A): Parts with elevated voltage ratings and higher current capacity, suitable for applications requiring additional design margin or operating in higher voltage environments.

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
3N248	onsemi	200 V	1.5 A	1 V @ 1 A	5 µA @ 200 V	-55°C ~ 165°C	4-SIP, KBPM	Obsolete
KBP02G	Diodes Incorporated	200 V	1.5 A	1.1 V @ 1.5 A	5 µA @ 200 V	-65°C ~ 150°C	4-SIP, KBP	Active
KBP202G	SMC Diode Solutions	200 V	2 A	1.1 V @ 2 A	5 µA @ 200 V	-55°C ~ 150°C	4-ESIP	Active
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
VS-2KBP005	Vishay General Semiconductor - Diodes Division	50 V	2 A	1 V @ 1 A	10 µA @ 50 V	-40°C ~ 150°C	4-SIP, D-44	Active
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
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
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
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

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement Candidates)

KBP02G (Diodes Incorporated) and KBP202G (SMC Diode Solutions) are the closest functional equivalents to the 3N248. Both maintain the 200V rating and meet or exceed the 1.5A current requirement. KBP02G preserves the lower temperature floor (-65°C vs -55°C), while KBP202G matches the original operating temperature range. Both parts are in active production status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Secondary Substitutes (Higher Voltage Margin)

The VS-2KBP series from Vishay (VS-2KBP02, VS-2KBP04, VS-2KBP06, VS-2KBP08, VS-2KBP10) provides active alternatives with elevated voltage ratings and 2A current capacity. VS-2KBP02 directly matches the 200V specification with higher current headroom. Higher voltage variants (400V through 1kV) are suitable for applications requiring additional design margin or operating in elevated voltage environments. All Vishay parts feature ROHS3 compliance and active product status.

Voltage Derating Consideration

VS-2KBP005 operates at 50V peak reverse voltage and is not suitable as a direct substitute for 200V applications. This part is listed in the provided substitute data but does not meet the minimum voltage requirement of the 3N248.

Compliance and Availability

All recommended substitutes carry ROHS3 compliance status and are classified as active products with confirmed inventory availability. The original 3N248 is obsolete; migration to an active substitute is necessary for new production and long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can KBP02G directly replace the 3N248 in existing designs?

A: KBP02G is functionally equivalent at the 200V/1.5A specification level. Both use 4-SIP through-hole packages. Verify PCB footprint compatibility with the specific package variant (KBPM vs KBP) before implementation, as minor pin spacing differences may exist between manufacturers.

Q: What is the difference between KBP202G and KBP02G?

A: KBP202G is rated for 2A average rectified current compared to KBP02G at 1.5A. Both maintain 200V peak reverse voltage. KBP202G provides additional current margin and is suitable for applications approaching the 1.5A limit. KBP202G uses a 4-ESIP package variant; confirm PCB compatibility before selection.

Q: Why are higher voltage parts (VS-2KBP04, VS-2KBP06, etc.) listed as substitutes?

A: Higher voltage-rated bridge rectifiers can operate safely in lower voltage applications, providing design margin and thermal headroom. These parts are suitable if circuit design permits the use of components rated above the minimum 200V requirement. Current capacity is increased to 2A across the series, offering additional performance margin.

Q: Is VS-2KBP005 suitable for the 3N248 application?

A: No. VS-2KBP005 is rated for 50V peak reverse voltage, which is insufficient for 200V applications. This part does not meet the minimum voltage specification and cannot be used as a substitute.

Q: What are the package compatibility considerations?

A: The 3N248 uses a 4-SIP KBPM package. KBP02G uses 4-SIP KBP, and VS-2KBP series uses 4-SIP D-44. All are through-hole packages with similar form factors, but PCB footprint verification is required. KBP202G uses 4-ESIP, which may have different pin spacing; confirm compatibility with your PCB layout before ordering.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitutes carry ROHS3 compliance certification. The original 3N248 does not specify RoHS status. Compliance with ROHS3 ensures regulatory alignment for new designs and production environments with RoHS requirements.

Q: What is the temperature operating range difference between substitutes?

A: The 3N248 operates from -55°C to 165°C. KBP02G extends the lower limit to -65°C but reduces the upper limit to 150°C. KBP202G and VS-2KBP series operate from -40°C to 150°C. Select based on your application's thermal requirements; higher temperature applications may require the original 3N248 specification or custom sourcing.

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