Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SR315

Name: SR315
Brand: Taiwan Semiconductor Corporation
SKU: SR315
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SR315

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SR315.pdf

Description:: DIODE SCHOTTKY 150V 3A DO201AD

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,197

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SR315 from Taiwan Semiconductor is a 3A, 150V Schottky barrier rectifier in DO-201AD package, featuring 0.95V forward voltage at 3A and 100µA reverse leakage at 25°C, optimized for high-efficiency DC/DC converters and automotive-grade power supplies.

For engineers reviewing the SR315 datasheet, SR315 pinout, SR315 application, or SR315 equivalent, key selection factors include its AEC-Q101-qualified variant (SR315H), 80A surge rating, 15°C/W junction-to-case thermal resistance, and cathode-band polarity marking for reliable board-level integration.

Technical Context

The SR315 operates as a single-die, unidirectional Schottky rectifier with guard ring overvoltage protection and pure tin-plated leads compliant with J-STD-002 solderability. Its 150V V_RRM and 2mA reverse leakage at 125°C support stable operation in thermally demanding environments.

Designed for switching frequencies up to several hundred kHz, it delivers low conduction loss via low forward voltage and high dv/dt immunity (10,000 V/µs), enabling use in compact, high-density SMPS without external snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 12–48V bus applications
I_F	3 A - Continuous average forward current; supports 36W output at 12V with margin
V_F @ 3A, 25°C	0.95 V - Low conduction loss reduces heat generation and improves system efficiency
I_R @ 150V, 25°C	100 µA - Minimal leakage preserves standby power integrity in always-on systems
I_FSM	80 A - Withstands 8.3ms half-sine surges; enables robust start-up and fault tolerance
T_J max	150 °C - Extended junction temperature rating allows operation in under-hood or enclosed industrial enclosures
R_θJC	15 °C/W - Enables effective heatsinking through PCB copper or clip-mounting for thermal management

Pinout & Package

DO-201AD axial-leaded package with cathode indicated by a colored band; body length 7.62 mm, diameter 2.72 mm, lead spacing 5.08 mm; RoHS-compliant, halogen-free molding compound rated UL 94V-0.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Input current entry point	Connected to source-side of switching node; requires adequate trace width for 3A continuous flow
Cathode	Output current exit point	Marked by band; ties to output capacitor ground reference; critical for EMI loop minimization

Key Features

Feature	Design Value
Guard ring structure	Prevents edge breakdown under transient overvoltage, improving reliability in noisy automotive environments
AEC-Q101 qualification (SR315H)	Validated for automotive power modules requiring stress-tested component reliability per JEDEC standards
1.10g mass	Enables consistent wave-soldering profile control and reduces mechanical stress during thermal cycling
JESD201 Class 2 whisker resistance	Eliminates tin whisker risk in long-life industrial deployments without conformal coating
UL 94V-0 molding compound	Meets flame-retardancy requirements for safety-critical AC/DC adapters and medical auxiliary supplies

Applications

Automotive DC/DC Converter	Industrial SMPS
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with 150V transients. IC Role / Device Role / Timing Role: Output rectifier handling 3A continuous load with fast recovery and low VF. Use Value: 0.95V V_F reduces conduction loss by ~15% vs. comparable 100V parts, lowering thermal stress on adjacent MCU.	Use Scenario: Secondary-side rectification in 48V telecom power supply with 80A surge requirement. IC Role / Device Role / Timing Role: High-current freewheeling diode in synchronous rectifier-assisted topology. Use Value: 80A I_FSM withstands lightning-induced line surges without derating, eliminating need for parallel devices.
USB-C PD Adapter	LED Driver Power Stage
Use Scenario: Output rectification in 65W GaN-based USB-C PD adapter operating at 200kHz. IC Role / Device Role / Timing Role: High-frequency Schottky rectifier minimizing switching losses in compact form factor. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast-switching transitions, ensuring clean waveform fidelity.	Use Scenario: Constant-current LED driver for street lighting with 150V bus and ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Main rectifier in flyback secondary stage delivering 3A to LED string. Use Value: 150°C T_J max and 2mA I_R at 125°C maintain regulation stability without thermal shutdown in sealed housings.

Automotive DC/DC Converter

Industrial SMPS

Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with 150V transients.

IC Role / Device Role / Timing Role: Output rectifier handling 3A continuous load with fast recovery and low VF.

Use Value: 0.95V V_F reduces conduction loss by ~15% vs. comparable 100V parts, lowering thermal stress on adjacent MCU.

Use Scenario: Secondary-side rectification in 48V telecom power supply with 80A surge requirement.

IC Role / Device Role / Timing Role: High-current freewheeling diode in synchronous rectifier-assisted topology.

Use Value: 80A I_FSM withstands lightning-induced line surges without derating, eliminating need for parallel devices.

USB-C PD Adapter

LED Driver Power Stage

Use Scenario: Output rectification in 65W GaN-based USB-C PD adapter operating at 200kHz.

IC Role / Device Role / Timing Role: High-frequency Schottky rectifier minimizing switching losses in compact form factor.

Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast-switching transitions, ensuring clean waveform fidelity.

Use Scenario: Constant-current LED driver for street lighting with 150V bus and ambient temperatures up to 85°C.

IC Role / Device Role / Timing Role: Main rectifier in flyback secondary stage delivering 3A to LED string.

Use Value: 150°C T_J max and 2mA I_R at 125°C maintain regulation stability without thermal shutdown in sealed housings.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-3EJH01-M3/5BT	100V V_RRM, 0.72V V_F @ 3A, DO-201AD, not AEC-Q101 qualified	Limited to ≤100V systems; lower VF improves efficiency but lacks automotive stress validation	Select when cost sensitivity outweighs automotive qualification needs and voltage headroom is sufficient
ON Semiconductor SB3150	150V V_RRM, 0.92V V_F @ 3A, DO-201AD, AEC-Q101 qualified, 100µA I_R @ 25°C	Nearly identical electrical specs; differs in thermal resistance (R_θJC = 18°C/W vs. SR315's 15°C/W)	Choose for tighter supply chain diversification where 3°C/W higher thermal resistance is acceptable

Compared with VS-3EJH01-M3/5BT and SB3150, the SR315 offers superior thermal performance (15°C/W R_θJC) and guaranteed AEC-Q101 compliance in the 150V class-critical for automotive and high-reliability industrial designs where thermal margin and qualification traceability are non-negotiable.

Availability

SR315 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS, and USB-C PD adapters requiring stable component supply across extended temperature and surge conditions.

Supply support for SR315 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power electronics markets since 1979.

The SR302–SR320 series targets high-reliability rectification in automotive, industrial, and consumer power supplies-designed specifically for efficiency-critical, thermally constrained applications where Schottky performance and qualification rigor intersect.

FAQ

What is the maximum junction temperature rating for the SR315?

The SR315 has a maximum junction temperature (T_J) rating of +150°C, verified per JEDEC JESD22-A108. This allows sustained operation in high-ambient environments such as under-hood automotive modules or enclosed industrial power supplies. The SR315 maintains specified electrical parameters up to this limit, provided thermal design respects its 15°C/W R_θJC and 50°C/W R_θJA ratings.

Is the SR315 pin-compatible with other parts in the SR302–SR320 family?

Yes-the SR315 shares the DO-201AD package, anode/cathode pinout, and mechanical dimensions with all SR302–SR320 variants. This enables direct substitution within the same voltage class when layout accommodates the 150V rating. However, forward voltage and leakage characteristics differ across the family, so electrical validation is required before drop-in replacement.

Does the SR315 meet automotive qualification standards?

The base SR315 is not AEC-Q101 qualified; however, the SR315H variant is fully AEC-Q101 qualified per Rev J2105 documentation. For automotive applications, specify SR315H to ensure stress testing across temperature cycling, humidity, and mechanical shock per automotive reliability standards.

What is the reverse leakage current of the SR315 at elevated temperature?

At 125°C and rated 150V reverse voltage, the SR315 exhibits ≤2 mA reverse leakage current, per datasheet Section "ELECTRICAL SPECIFICATIONS." This value ensures minimal standby power loss in always-on systems like telematics modules or smart sensors operating continuously at high ambient temperatures.

How is polarity marked on the SR315 package?

Polarity on the SR315 is indicated by a distinct cathode band printed on the body of the DO-201AD package. This band identifies the cathode terminal, which must be connected toward the positive output side of the circuit. The anode is the unmarked lead. This marking complies with industry-standard diode polarity conventions and supports automated optical inspection (AOI) during SMT assembly.

SR315 Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 150 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 850 mV @ 3 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 100 µA @ 150 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

Operating Temperature - Junction:: -55°C ~ 150°C

SR315 FAQ

1.How can I place an order for SR315 through Aetrix?

Please submit a Request for Quotation (RFQ) for SR315 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SR315 reliable?

The price and inventory of SR315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR315 is usually 5 days.

3.What payment methods are accepted for SR315?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR315 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SR315?

SR315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SR315 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SR315?

For technical support, including SR315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR315 requirements.

6.How does Aetrix verify that SR315 is sourced from the original manufacturer or authorized distributors?

All SR315 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SR315 meets industry standards.

7.What is the process for return or replacement of SR315?

All SR315 units undergo pre-shipment inspection (PSI). If there is an issue with SR315, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SR315 part is unused and in its original packaging.

Return procedure for SR315:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…