B250R Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The B250R is a single-phase bridge rectifier manufactured by Diotec Semiconductor, rated for 600 V peak reverse voltage and 2 A average rectified current. This component is designed for through-hole mounting in standard power supply and rectification applications. The part maintains Active product status with 1785 units in current inventory.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within alternative electrical and mechanical specifications. The B250R accepts substitutes that maintain compatibility across critical electrical parameters including voltage rating, current capacity, forward voltage characteristics, and operating temperature range, while accommodating differences in package form factor and mounting footprint.

Key Parameters

Parameter	Value	Unit
Diode Type	Single Phase	—
Technology	Standard	—
Voltage - Peak Reverse (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Operating Temperature Range	-50 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	4-Circular, WOG	—

Substitute Part Grouping Explanation

Substitution eligibility for the B250R is determined by strict alignment with the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute must maintain a peak reverse voltage rating of 600 V or higher to ensure safe operation within the original design envelope.

Current Capacity: The substitute must support the average rectified current requirement. Substitutes with equal or greater current ratings are acceptable; lower ratings are not permitted.

Forward Voltage Characteristics: The substitute forward voltage drop must not exceed the original specification to prevent excessive heat generation and maintain circuit efficiency.

Reverse Leakage Current: The substitute reverse leakage current at rated voltage must remain within acceptable limits to prevent circuit malfunction.

Operating Temperature Range: The substitute must support the full operating temperature range of -50°C to 150°C (TJ) or a range that encompasses this specification.

Mounting Type: Both the main part and substitute must utilize through-hole mounting technology for PCB compatibility.

Diode Type and Technology: Both must be single-phase standard bridge rectifiers to maintain functional equivalence.

Parameter Comparison

Parameter	B250R (Diotec)	VS-1KAB60E (Vishay)	Compatibility Notes
Manufacturer	Diotec Semiconductor	Vishay General Semiconductor - Diodes Division	Different manufacturers; both active product status
Diode Type	Single Phase	Single Phase	Functionally equivalent
Technology	Standard	Standard	Functionally equivalent
Voltage - Peak Reverse (Max)	600 V	600 V	Identical rating
Current - Average Rectified (Io)	2 A	1.2 A	Substitute rated lower; acceptable for designs not requiring full 2 A capacity
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1.1 V @ 1.2 A	Substitute exhibits slightly higher forward voltage drop
Current - Reverse Leakage @ Vr	5 µA @ 600 V	Not specified in provided data	Comparison not available
Operating Temperature Range	-50°C to 150°C (TJ)	-55°C to 150°C (TJ)	Substitute range encompasses original specification
Mounting Type	Through Hole	Through Hole	Functionally equivalent
Package / Case	4-Circular, WOG	4-Square, D-38	Different physical form factors; PCB layout modification required
RoHS Status	Not applicable	ROHS3 Compliant	Substitute meets modern environmental compliance
Product Status	Active	Active	Both components actively manufactured and supported

Engineering Selection Recommendations

Primary Selection Criteria:

The B250R remains the preferred component when the original 2 A current capacity is required and the 4-Circular WOG package footprint is already established in the PCB design. The part maintains Active product status with substantial inventory availability (1785 units).

Substitute Selection Criteria:

The VS-1KAB60E (Vishay) serves as a functional substitute when the following conditions are met:

The circuit design operates at or below 1.2 A average rectified current, eliminating the need for the B250R's full 2 A capacity.
The slightly elevated forward voltage drop (1.1 V @ 1.2 A versus 1 V @ 1 A) is acceptable within the power supply design margins.
PCB layout can accommodate the 4-Square D-38 package form factor, or the design permits physical repositioning of the component.
The extended lower operating temperature limit (-55°C versus -50°C) provides additional thermal margin for the application.
ROHS3 compliance is required or preferred for the end application.

Both components share identical 600 V peak reverse voltage ratings, through-hole mounting technology, and standard bridge rectifier topology. Both maintain Active product status with current manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the VS-1KAB60E directly replace the B250R without PCB modification?

A: The VS-1KAB60E utilizes a 4-Square D-38 package while the B250R uses a 4-Circular WOG package. These form factors differ in physical dimensions and pin spacing. Direct substitution without PCB layout modification is not possible. The component footprint must be redesigned to accommodate the D-38 package geometry.

Q: What is the impact of the lower 1.2 A current rating on the VS-1KAB60E?

A: The VS-1KAB60E is rated for 1.2 A average rectified current compared to the B250R's 2 A rating. This substitute is suitable only for applications where the actual circuit current demand does not exceed 1.2 A. Exceeding this rating will cause component failure and potential circuit damage. Verify the actual current requirements of your application before selecting this substitute.

Q: Does the higher forward voltage of the VS-1KAB60E affect circuit performance?

A: The VS-1KAB60E exhibits a forward voltage drop of 1.1 V @ 1.2 A compared to the B250R's 1 V @ 1 A. This 0.1 V difference results in slightly increased power dissipation and heat generation. For most standard power supply applications, this difference is within acceptable design margins. However, designs with tight voltage regulation requirements or thermal constraints should evaluate this parameter against specific circuit specifications.

Q: Are both parts suitable for the same temperature range applications?

A: The VS-1KAB60E operating temperature range (-55°C to 150°C) encompasses the B250R range (-50°C to 150°C). The substitute provides an additional 5°C of lower temperature capability. Both components support the full -50°C to 150°C range required by the original design.

Q: What compliance differences exist between these components?

A: The B250R lists RoHS status as "Not applicable," while the VS-1KAB60E is ROHS3 compliant. If your application or end market requires RoHS3 compliance certification, the VS-1KAB60E meets this requirement. The B250R does not carry this certification.

Q: Can I use the B250R as a substitute for the VS-1KAB60E?

A: Yes, the B250R can substitute for the VS-1KAB60E in applications where the higher 2 A current capacity and lower forward voltage drop are beneficial or neutral to circuit operation. The B250R's superior current rating and lower forward voltage provide performance margin. However, the different package form factor (4-Circular WOG versus 4-Square D-38) requires PCB layout modification.

Q: What inventory considerations apply to these parts?

A: The B250R maintains 1785 units in current inventory, while the VS-1KAB60E has 1376 units available. Both components are actively manufactured and supported. Inventory levels should be verified at the time of procurement, as availability may change based on market demand.

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