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Taiwan Semiconductor Corporation SR315 A0G
- Part No.:
- SR315 A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR315 A0G.pdf
- Description:
- DIODE SCHOTTKY 150V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:114
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Product details
Overview
SR315 A0G 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 A0G datasheet, SR315 A0G pinout, SR315 A0G application, or SR315 A0G equivalent, key selection criteria include its 150V VRRM, 80A IFSM, 125°C/150°C junction temperature range, AEC-Q101 qualification path (via SR315H variant), and DO-201AD mechanical compatibility with legacy through-hole layouts.
Technical Context
This single-die Schottky rectifier uses a guard ring structure to enhance overvoltage robustness and supports high dv/dt (10,000 V/µs) for fast-switching topologies. Its low RθJA of 50°C/W and RθJC of 15°C/W enable thermal management in compact, convection-cooled designs.
Rated for continuous 3A average forward current, it delivers stable performance across -55°C to +150°C storage and operating ranges, with reverse leakage tightly specified at ≤100 µA @ 25°C and ≤2 mA @ 125°C for reliable high-temperature operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum non-repetitive reverse voltage before breakdown; defines safe operating window in 12–48V bus clamp or flyback snubber circuits. |
| IF | 3 A - Continuous average forward current; supports 36W output at 12V with typical 0.95V drop (3.4W conduction loss). |
| IFSM | 80 A - Peak surge current for 8.3ms half-sine; withstands inrush in AC-DC front-ends and motor drive freewheeling paths. |
| VF @ 3A, 25°C | 0.95 V - Forward voltage drop; enables >92% efficiency in 12V→5V buck stages at full load. |
| IR @ 150V, 25°C | 100 µA - Reverse leakage current; ensures minimal standby power loss in always-on auxiliary rails. |
| TJ max | 125°C / 150°C - Dual-rated junction temperature; allows derated operation up to 150°C with appropriate thermal design. |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; requires ≤25°C ambient rise for 125°C TJ at full 3A load. |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., switch node in synchronous rectification or source in N-channel MOSFET gate drive clamping). |
| Cathode (Lead 2, banded end) | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive or DC bus); polarity must be observed to prevent catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without requiring external TVS, reducing BOM count in industrial SMPS. |
| Low VF (0.95V @ 3A) | Reduces conduction losses by ~30% vs. comparable 150V Si diodes, directly improving system efficiency in battery-powered DC/DC stages. |
| AEC-Q101 qualification path | SR315H variant is AEC-Q101 qualified; SR315 A0G shares identical die and package-enables qualification-ready sourcing for automotive Tier-2 suppliers. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants and meets global environmental compliance mandates for export electronics. |
| High IFSM (80A) | Supports repeated cold-start surges in 24V truck power systems and UPS hold-up circuits without degradation. |
Applications
| Automotive DC/DC Converters | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12V→3.3V/5V step-down conversion in body control modules and infotainment head units. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 0.95V VF minimizes heat generation in sealed enclosures; 150V rating accommodates load dump transients up to ±120V. | Use Scenario: Secondary-side rectification in 48V telecom rectifiers and PLC power supplies. IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward converters. Use Value: 80A IFSM handles repetitive 50A peak currents during short-circuit recovery; DO-201AD footprint enables manual rework on legacy PCBs. |
| AC-DC Adapter Output Stage | Motor Drive Freewheeling Path |
Use Scenario: 19V/3.35A laptop adapter secondary rectification. IC Role / Device Role / Timing Role: Main output rectifier replacing slower 1N5822-class diodes. Use Value: 100µA IR at 25°C reduces no-load power consumption below 30mW, meeting Level VI efficiency standards. | Use Scenario: Freewheeling path in 24V BLDC gate driver IC protection circuits. IC Role / Device Role / Timing Role: Clamp diode across low-side MOSFET during PWM dead-time. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast 100V/ns switching edges; 1.1g weight avoids mechanical stress on thin PCBs. |
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-3EWH015-M3/57T | Same DO-201AD package, 3A/150V, but VF = 0.87V @ 3A and IR = 200µA @ 25°C; slightly lower conduction loss but higher leakage. | Better efficiency in high-duty-cycle adapters; less suitable for ultra-low-standby designs where <100µA IR is critical. | Select when prioritizing conduction loss over leakage-limited standby power. |
| ON Semiconductor SB3150-E3/54 | DO-201AD, 3A/150V, VF = 0.92V @ 3A, IR = 150µA @ 25°C; AEC-Q101 qualified as standard part. | Drop-in replacement for automotive programs requiring certified components without qualification effort. | Choose when AEC-Q101 certification is mandatory and SR315H is unavailable. |
Compared with VS-3EWH015-M3/57T and SB3150-E3/54, SR315 A0G offers the lowest reverse leakage (100µA) among 150V/3A Schottkys, making it optimal for energy-sensitive applications, while sharing identical DO-201AD layout and thermal performance.
Availability
SR315 A0G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS secondary rectification, and AC-DC adapter output stages requiring stable component supply and long-term manufacturability.
Supply support for SR315 A0G 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 industrial, computing, and automotive markets since 1979.
The SR302–SR320 series was designed specifically for high-reliability, cost-sensitive power conversion applications demanding robust Schottky performance in standardized axial packages-targeting replacements for legacy 1N58xx and MBR3xx devices.
FAQ
What is the maximum junction temperature rating for SR315 A0G?
The SR315 A0G has a dual-rated junction temperature: 125°C for standard operation and 150°C under derated conditions. This allows flexible thermal design-full 3A current is supported up to 125°C, while operation up to 150°C requires current derating per the forward current derating curve in the datasheet. The SR315 A0G's RθJA of 50°C/W defines the required board-level thermal resistance to stay within these limits.
Is SR315 A0G AEC-Q101 qualified?
No, SR315 A0G is not AEC-Q101 qualified. However, the SR315H variant-identical in die, package, and electrical specs-is explicitly AEC-Q101 qualified. SR315 A0G shares the same process flow and materials, enabling straightforward qualification path adoption for automotive Tier-2 suppliers who require documentation traceability but can manage internal validation.
What does the "A0G" suffix mean in SR315 A0G?
The "A0G" suffix in SR315 A0G indicates the packaging configuration: DO-201AD case in 500-unit ammo box packaging. Per Taiwan Semiconductor's ordering guide, "A0G" denotes non-tape-and-reel bulk packaging, while "H" denotes AEC-Q101 qualification. Thus, SR315 A0G is the standard-grade, bulk-packaged version of the 150V/3A Schottky rectifier.
How does SR315 A0G compare to SR310 A0G in terms of forward voltage and leakage?
SR315 A0G has a higher forward voltage (0.95V @ 3A) than SR310 A0G (0.85V @ 3A) due to its higher 150V VRRM rating, which requires wider depletion region design. Conversely, SR315 A0G exhibits lower reverse leakage (100µA @ 25°C) versus SR310 A0G (500µA @ 25°C), reflecting tighter process control for higher-voltage variants. Both share identical DO-201AD package and thermal specs.
Can SR315 A0G replace SR315H in non-automotive applications?
Yes, SR315 A0G can directly replace SR315H in non-automotive applications because both share identical electrical specifications, DO-201AD package, pinout, and thermal performance. The only difference is AEC-Q101 qualification testing-SR315H undergoes additional stress screening. For industrial, consumer, or computing use cases, SR315 A0G provides full functional equivalence at lower cost and broader availability.
SR315 A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Cut Tape (CT)
- 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 A0G FAQ
1.How can I place an order for SR315 A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR315 A0G 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 A0G reliable?
The price and inventory of SR315 A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR315 A0G is usually 5 days.
3.What payment methods are accepted for SR315 A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR315 A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR315 A0G?
SR315 A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR315 A0G 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 A0G?
For technical support, including SR315 A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR315 A0G requirements.
6.How does Aetrix verify that SR315 A0G is sourced from the original manufacturer or authorized distributors?
All SR315 A0G 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 A0G meets industry standards.
7.What is the process for return or replacement of SR315 A0G?
All SR315 A0G units undergo pre-shipment inspection (PSI). If there is an issue with SR315 A0G, 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 A0G part is unused and in its original packaging.
Return procedure for SR315 A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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