B0520WS-7-F-2477 Equivalent & Substitute Parts

Part Overview

The B0520WS-7-F-2477 is a Schottky diode rated for 20 V DC reverse voltage and 500 mA average rectified current in a surface mount SOD-323 package. This part is classified as obsolete, which necessitates identification of active equivalent components for ongoing production and maintenance applications. The substitute part maintains identical electrical specifications and mechanical compatibility while offering improved availability and active product status.

Key Parameters

Parameter	Value
Technology	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V
Current - Average Rectified (Io)	500 mA
Voltage - Forward (Vf) (Max) @ If	430 mV @ 500 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	250 µA @ 20 V
Capacitance @ Vr, F	58 pF @ 0 V, 1 MHz
Package / Case	SC-76, SOD-323
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the B0520WS-7-F-2477 with the B0520WS-7-F is based on electrical and mechanical parameter equivalence. Both components are manufactured by Diodes Incorporated and share identical specifications across all critical parameters:

Reverse voltage rating: 20 V
Average rectified current: 500 mA
Forward voltage drop: 430 mV @ 500 mA
Recovery speed: Fast Recovery ≤ 500 ns, > 200 mA
Reverse leakage current: 250 µA @ 20 V
Junction capacitance: 58 pF @ 0 V, 1 MHz
Package designation: SOD-323
Operating temperature range: -55°C ~ 125°C
RoHS3 compliance

The primary distinction is product status: B0520WS-7-F-2477 is obsolete, while B0520WS-7-F is active with significantly higher inventory availability.

Parameter Comparison

Parameter	B0520WS-7-F-2477 (Main Part)	B0520WS-7-F (Substitute)
Manufacturer	Diodes Incorporated	Diodes Incorporated
Technology	Schottky	Schottky
Voltage - DC Reverse (Vr) (Max)	20 V	20 V
Current - Average Rectified (Io)	500 mA	500 mA
Voltage - Forward (Vf) (Max) @ If	430 mV @ 500 mA	430 mV @ 500 mA
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	250 µA @ 20 V	250 µA @ 20 V
Capacitance @ Vr, F	58 pF @ 0 V, 1 MHz	58 pF @ 0 V, 1 MHz
Package / Case	SC-76, SOD-323	SC-76, SOD-323
Mounting Type	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active
Inventory Availability	1,078 Pcs	340,195 Pcs

Engineering Selection Recommendations

The B0520WS-7-F is the direct substitute for the B0520WS-7-F-2477. Selection of the active part is based on the following engineering criteria:

Product Status: The B0520WS-7-F-2477 carries obsolete status, indicating discontinued production and limited long-term availability. The B0520WS-7-F maintains active status with full manufacturing support.

Regulatory Compliance: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Electrical Equivalence: All electrical parameters are identical, including voltage ratings, current capacity, forward voltage characteristics, recovery speed, leakage current, and junction capacitance. No circuit redesign or performance adjustment is required.

Mechanical Compatibility: Both components utilize the SOD-323 package in surface mount configuration, ensuring direct PCB footprint compatibility without layout modifications.

Inventory and Supply Chain: The substitute part offers substantially higher inventory levels (340,195 units versus 1,078 units), providing improved supply chain reliability and reduced procurement lead times.

Frequently Asked Questions (FAQ)

Q: Can B0520WS-7-F directly replace B0520WS-7-F-2477 in existing designs?

A: Yes. Both components are electrically and mechanically identical. No circuit modifications, PCB layout changes, or performance adjustments are required. Direct substitution is applicable for all applications.

Q: Are there differences in packaging or tape specifications?

A: The B0520WS-7-F is supplied in Cut Tape (CT) and Digi-Reel® packaging formats. The B0520WS-7-F-2477 packaging specification is not detailed in the provided data. Both components use the SOD-323 package designation. Verify packaging requirements with your procurement specifications.

Q: What is the Moisture Sensitivity Level (MSL) for the substitute part?

A: The B0520WS-7-F carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the B0520WS-7-F-2477 and B0520WS-7-F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Why is the substitute part recommended despite the main part having available inventory?

A: The B0520WS-7-F-2477 is classified as obsolete, indicating discontinued production. While current inventory exists, future availability cannot be assured. The B0520WS-7-F is active with significantly higher inventory levels, providing long-term supply chain security and reduced procurement risk.

Q: Are the electrical characteristics identical between the two parts?

A: Yes. Voltage ratings, current capacity, forward voltage drop, recovery speed, reverse leakage current, and junction capacitance are identical across all specified parameters.

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