SR303 Equivalent & Substitute Parts Reference

Part Overview

SR303 is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, categorized under Diodes, Rectifiers. It features a maximum reverse voltage of 30 V, average rectified current of 3A, and is supplied in a DO-201AD through-hole package. The diode is active and ROHS3 compliant. Finding alternative models is necessary to support supply chain continuity, maintenance of inventory, and design flexibility, especially when similar electrical and mechanical parameters are required.

Substiute Parts

SR303

Taiwan Semiconductor CorporationIn Stock: 1079SR303 Datasheet

Current PartRFQ

31DQ03

SMC Diode SolutionsIn Stock: 147731DQ03 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute selection is strictly based on direct matching of electrical and mechanical parameters relevant to Schottky diodes in the diodes/rectifiers category. Key parameters include technology (Schottky), maximum DC reverse voltage, average rectified current, forward voltage at rated current, reverse leakage current, recovery speed, mounting type, and package/case compatibility. Compliance and product status are validated to ensure availability and regulatory alignment.

Parameter Comparison

Engineering Selection Recommendations

Both SR303 and 31DQ03 are classified as active products and comply with ROHS3 standards. The Moisture Sensitivity Level is 1 (Unlimited) for each, supporting robust supply chain and handling requirements. The REACH status differs, with SR303 being unaffected and 31DQ03 affected, and should be evaluated based on specific project compliance needs.

Frequently Asked Questions (FAQ)

Q1: What parameters must match for a Schottky rectifier diode substitute?
A1: Technology, maximum DC reverse voltage, average rectified current, forward voltage at rated current, mounting type, and package/case must be identical or within specified tolerances for direct substitution.

Q2: Does package compatibility affect substitute selection?
A2: Yes. Both SR303 and 31DQ03 use the DO-201AD axial through-hole package, supporting direct mechanical replacement without alteration of board layout.

Q3: What standards or certifications are relevant for substitution?
A3: Primary standards include RoHS3 compliance and moisture sensitivity level, both rated at MSL 1 (Unlimited) for these parts. REACH status should be verified according to project-specific requirements.

Q4: Is product status a critical factor in selection?
A4: Product status must be active to ensure ongoing availability and long-term support. Both SR303 and 31DQ03 are currently active.

Q5: Can higher average rectified current or extended temperature range be a reason for substitution?
A5: Only parameters explicitly provided in the input are used. Differences in current rating or temperature range should be evaluated solely on the project's required specifications.