SS315 Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS315 is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 150V DC reverse voltage with 3A average rectified current in a surface mount DO-214AB (SMC) package. This component is designed for fast recovery applications requiring switching speeds of 500ns or less at currents exceeding 200mA. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring compatible Schottky diode performance within the specified electrical and mechanical parameters.

Substiute Parts

SS315

Taiwan Semiconductor CorporationIn Stock: 12210SS315 Datasheet

Current PartRFQ

30BQ150

SMC Diode SolutionsIn Stock: 727730BQ150 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS315 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Voltage - DC Reverse (Vr) (Max): 150V
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Technology: Schottky
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Acceptable Variation Criteria:

• Current - Average Rectified (Io): Substitute must support minimum 3A operation
• Operating Temperature - Junction: Substitute range must encompass or exceed -55°C to 150°C
• Current - Reverse Leakage @ Vr: Substitute specification must be documented at rated voltage
• RoHS and MSL compliance: Substitute must maintain ROHS3 Compliant status and MSL 1 rating

The 30BQ150 manufactured by SMC Diode Solutions meets all mandatory matching criteria and is classified as a direct substitute for the SS315.

Parameter Comparison

Engineering Selection Recommendations

SS315 Selection Criteria: The SS315 is suitable for applications requiring a 150V, 3A Schottky rectifier diode in DO-214AB surface mount packaging with fast recovery characteristics. This part maintains active product status and full ROHS3 compliance with MSL 1 rating, supporting unlimited moisture exposure during storage and handling.

30BQ150 Selection Criteria: The 30BQ150 is suitable as a substitute where 150V, fast recovery Schottky rectifier performance in DO-214AB surface mount packaging is required. This part offers an extended operating temperature range to 175°C compared to the SS315's 150°C maximum junction temperature. Both parts maintain active product status and ROHS3 compliance with MSL 1 rating.

Compliance Considerations: Both the SS315 and 30BQ150 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with standard PCB assembly processes and storage conditions. The 30BQ150 carries REACH Affected status, whereas the SS315 is REACH Unaffected; this distinction must be evaluated against end-application regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 30BQ150 directly replace the SS315 in existing designs?

A: The 30BQ150 is mechanically and electrically compatible with the SS315 for applications requiring 150V, fast recovery Schottky rectifier performance in DO-214AB surface mount packaging. Both parts share identical voltage ratings, package geometry, and fast recovery speed specifications. The 30BQ150 provides an extended operating temperature range to 175°C. Reverse leakage current is higher in the 30BQ150 (1 mA @ 150V versus 100 µA @ 150V); this difference must be evaluated against circuit design tolerances.

Q: What are the key differences between SS315 and 30BQ150?

A: The primary differences are: (1) Manufacturer—Taiwan Semiconductor Corporation versus SMC Diode Solutions; (2) Reverse leakage current—100 µA @ 150V versus 1 mA @ 150V; (3) Operating temperature range—-55 to 150°C versus -55 to 175°C; (4) REACH status—Unaffected versus Affected. All other critical parameters including voltage rating, package type, mounting method, and fast recovery speed are equivalent.

Q: Are both parts available in the same packaging format?

A: Yes. Both the SS315 and 30BQ150 are supplied in DO-214AB (SMC) surface mount packages in Tape & Reel (TR) format, ensuring compatibility with standard automated PCB assembly equipment and processes.

Q: What is the significance of the reverse leakage current difference?

A: The 30BQ150 exhibits higher reverse leakage current (1 mA @ 150V) compared to the SS315 (100 µA @ 150V). In applications where reverse leakage contributes significantly to circuit power dissipation or leakage current budgets, this tenfold difference must be evaluated. For most rectifier applications, this difference is not critical; however, precision analog circuits or low-power standby applications may require verification.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. The 30BQ150 is REACH Affected, while the SS315 is REACH Unaffected. Applications subject to REACH regulations must account for this distinction during component selection.

Q: What is the temperature operating range difference?

A: The SS315 operates from -55°C to 150°C junction temperature, while the 30BQ150 extends to 175°C. For applications operating near or above 150°C, the 30BQ150 provides additional thermal margin. For standard industrial applications operating below 150°C, both parts are functionally equivalent in this regard.