SB040/54 Equivalent & Substitute Parts

Part Overview

The SB040/54 is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 40V DC reverse voltage and 600mA average rectified current in an MPG06 axial through-hole package. This component is classified as Active product status and is currently in stock with 1008 pieces available.

Equivalent and substitute parts are identified when alternative components meet or exceed the electrical specifications and mechanical compatibility requirements of the original part. Substitution becomes necessary due to supply chain considerations, packaging preferences, or design optimization requirements while maintaining functional equivalence within the specified parameter ranges.

Substiute Parts

SB040/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1025SB040/54 Datasheet

Current PartRFQ

1N5819-T

Diodes IncorporatedIn Stock: 753341N5819-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SB040/54 are qualified based on the following electrical and mechanical criteria:

Voltage Rating Compatibility: The substitute part must maintain a DC reverse voltage rating (Vr) equal to or greater than 40V to ensure safe operation within the original circuit design parameters.

Current Rating Compatibility: The substitute part must support an average rectified current (Io) equal to or greater than 600mA. Parts with higher current ratings provide functional equivalence and design margin.

Forward Voltage Characteristics: Forward voltage drop (Vf) at rated current must be within acceptable operating ranges for the application circuit. The substitute part 1N5819-T operates at 600mV @ 1A, which is compatible with the original specification of 550mV @ 600mA.

Recovery Speed: Both the original part and substitute must maintain fast recovery characteristics (≤500ns for currents >200mA) to ensure proper switching behavior in rectification applications.

Reverse Leakage Current: The substitute part must demonstrate controlled reverse leakage characteristics at the rated voltage to maintain circuit performance.

Mounting and Package: Through-hole axial packages are mechanically compatible, though specific package designations (MPG06 versus DO-41) may differ. Both are standard axial through-hole formats suitable for PCB insertion.

Operating Temperature Range: The substitute part must support the same or wider operating temperature range (-65°C to 125°C junction temperature).

Parameter Comparison

Engineering Selection Recommendations

The 1N5819-T from Diodes Incorporated qualifies as a functional substitute for the SB040/54 based on electrical parameter equivalence and mechanical compatibility.

Electrical Equivalence: The 1N5819-T meets or exceeds all critical electrical specifications. The 40V reverse voltage rating matches the original part exactly. The 1A average rectified current rating exceeds the 600mA requirement of the SB040/54, providing operational margin. Fast recovery characteristics are identical. Forward voltage characteristics remain within acceptable operating ranges for rectification circuits.

Compliance Status: The 1N5819-T carries ROHS3 compliance certification, whereas the SB040/54 is RoHS non-compliant. This distinction is significant for applications subject to RoHS regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 export classification.

Package Compatibility: Both parts utilize through-hole axial mounting. The SB040/54 uses MPG06 package designation while the 1N5819-T uses DO-41 (DO-204AL) designation. These represent different package codes but maintain compatible physical form factors for standard PCB through-hole insertion.

Inventory and Availability: The 1N5819-T demonstrates significantly higher inventory availability (75,300 pieces) compared to the SB040/54 (1,008 pieces), supporting supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the 1N5819-T directly replace the SB040/54 in existing circuit designs?

A: Yes, the 1N5819-T provides functional equivalence for rectification applications. Both parts share identical 40V reverse voltage ratings, fast recovery characteristics, and operating temperature ranges. The 1N5819-T's higher 1A current rating exceeds the 600mA requirement, providing design margin. Physical form factors are compatible for through-hole PCB mounting, though specific package dimensions (MPG06 versus DO-41) should be verified against PCB layout constraints.

Q: What is the difference between the MPG06 and DO-41 packages?

A: MPG06 and DO-41 are different package designation codes for axial through-hole diodes. Both represent standard axial form factors suitable for through-hole insertion. Physical dimensions and lead spacing may differ slightly between these package types. PCB layout verification is necessary to confirm mechanical fit before substitution.

Q: Does the higher reverse leakage current of the 1N5819-T affect circuit performance?

A: The 1N5819-T exhibits 1mA reverse leakage at 40V compared to 500µA for the SB040/54. This difference is within acceptable ranges for standard rectification applications. Circuit-specific leakage requirements should be evaluated based on application sensitivity to reverse current.

Q: Is the 1N5819-T suitable for applications requiring RoHS compliance?

A: Yes, the 1N5819-T carries ROHS3 compliance certification. The SB040/54 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the 1N5819-T provides compliant substitution.

Q: Are there any thermal considerations when substituting these parts?

A: Both parts maintain identical operating temperature ranges (-65°C to 125°C junction temperature). Thermal performance depends on circuit current levels and heat dissipation design. The 1N5819-T's higher current rating does not introduce additional thermal constraints for applications operating at or below 600mA.

Q: What certifications and compliance standards apply to both parts?

A: Both the SB040/54 and 1N5819-T maintain REACH Unaffected status and EAR99 export classification. The 1N5819-T additionally carries ROHS3 compliance. The SB040/54 is RoHS non-compliant. Moisture sensitivity level is 1 (Unlimited) for both parts.