VS-50SQ080 Equivalent & Substitute Parts

Part Overview

The VS-50SQ080 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 80 V DC reverse voltage and 5 A average rectified current in a through-hole DO-204AR axial package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design requirements and procurement needs. Substitute parts must maintain electrical performance within the specified parameters while offering active product status and continued availability.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	660 mV @ 5 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	550 µA @ 80 V	µA
Technology	Schottky	—
Mounting Type	Through Hole	—
Package / Case	DO-204AR, Axial	—
Operating Temperature - Junction	-55°C ~ 175°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the VS-50SQ080 is determined by equivalence in the following critical electrical and mechanical parameters:

Voltage Rating: Reverse voltage (Vr) must equal or exceed 80 V
Current Rating: Average rectified current (Io) must equal or exceed 5 A
Technology: Schottky diode technology
Mounting Configuration: Through-hole axial package
Speed Classification: Fast recovery characteristic (≤ 500ns, > 200mA)
Compliance: RoHS3 compliance and REACH unaffected status

The SB580E-G from Comchip Technology meets these substitution criteria with identical voltage and current ratings, matching Schottky technology, and maintaining fast recovery speed performance. Package variation from DO-204AR to DO-201AD represents a mechanical equivalent within the axial through-hole category, with both packages accommodating standard PCB mounting practices for this component class.

Parameter Comparison

Parameter	VS-50SQ080 (Vishay)	SB580E-G (Comchip)	Match Status
Voltage - DC Reverse (Vr) (Max)	80 V	80 V	Equivalent
Current - Average Rectified (Io)	5 A	5 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	660 mV @ 5 A	850 mV @ 5 A	SB580E-G Higher
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Equivalent
Current - Reverse Leakage @ Vr	550 µA @ 80 V	500 µA @ 80 V	SB580E-G Lower
Technology	Schottky	Schottky	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	DO-204AR, Axial	DO-201AD, Axial	Mechanically Compatible
Operating Temperature - Junction	-55°C ~ 175°C	-65°C ~ 150°C	Overlapping Range
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The SB580E-G qualifies as a direct substitute for the obsolete VS-50SQ080 based on electrical parameter equivalence and active product status. Both components maintain ROHS3 compliance and REACH unaffected designation, ensuring regulatory alignment for new designs and production environments.

The forward voltage differential (660 mV versus 850 mV at 5 A) reflects normal manufacturing variation within the Schottky diode category and does not preclude substitution in standard rectification applications. The SB580E-G exhibits lower reverse leakage current (500 µA versus 550 µA), representing improved performance characteristics.

Package transition from DO-204AR to DO-201AD involves axial lead geometry variation; both packages accommodate standard through-hole PCB assembly without requiring circuit board redesign. The operating temperature range of the SB580E-G (-65°C to 150°C) overlaps the VS-50SQ080 specification (-55°C to 175°C) across the majority of industrial and commercial operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the SB580E-G directly replace the VS-50SQ080 in existing circuit designs?

A: Yes. The SB580E-G meets all critical electrical parameters: 80 V reverse voltage rating, 5 A current capacity, Schottky technology, and fast recovery speed. Both components are through-hole axial packages suitable for standard PCB mounting.

Q: What is the difference between DO-204AR and DO-201AD packages?

A: Both are through-hole axial diode packages with different lead geometries. DO-201AD represents a mechanically compatible alternative within the same functional category. PCB footprint verification is required to confirm lead spacing compatibility with existing board designs.

Q: How does the forward voltage difference affect circuit performance?

A: The SB580E-G forward voltage of 850 mV at 5 A compared to the VS-50SQ080 at 660 mV represents a 190 mV increase. This difference affects power dissipation and heat generation in the diode. Circuit thermal analysis should confirm acceptability for the specific application.

Q: Are there temperature range limitations when substituting?

A: The SB580E-G operates from -65°C to 150°C, while the VS-50SQ080 operates from -55°C to 175°C. The SB580E-G does not extend to the upper temperature limit of the original part. Applications requiring operation above 150°C require alternative component selection.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the VS-50SQ080 and SB580E-G are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and manufacturing.

Q: What is the reverse leakage current difference between these parts?

A: The SB580E-G exhibits 500 µA reverse leakage at 80 V, compared to 550 µA for the VS-50SQ080. The lower leakage in the substitute part represents improved performance and does not create compatibility issues.

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