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Taiwan Semiconductor Corporation SR310 A0G
- Part No.:
- SR310 A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR310 A0G.pdf
- Description:
- DIODE SCHOTTKY 100V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,233
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Product details
Overview
SR310 A0G from Taiwan Semiconductor is a 3A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.85V forward voltage at 3A/25°C, 100µA reverse leakage at rated VR and 80A surge capability. It serves as primary output rectifier in high-efficiency DC-DC converters and AC-DC adapters.
For engineers reviewing the SR310 A0G datasheet, SR310 A0G pinout, SR310 A0G application, or SR310 A0G equivalent, key selection factors include its 100V VRRM rating, low VF for thermal efficiency, AEC-Q101 qualification option (H suffix), DO-201AD mechanical compatibility, and 125°C/150°C junction temperature range.
Technical Context
This single-die Schottky rectifier uses platinum-silicide or similar barrier metallization to achieve low forward voltage and fast switching with no minority-carrier storage delay. Its guard ring structure enhances ruggedness against transient overvoltage events common in switching power supplies.
The device operates with a junction-to-ambient thermal resistance of 50°C/W and junction-to-case of 15°C/W, enabling reliable 3A continuous conduction in standard PCB layouts without forced airflow. Reverse recovery time is effectively zero due to majority-carrier conduction mechanism.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; sets safe operating margin for 48V-output SMPS secondary side |
| IF | 3 A - Continuous forward current rating; defines minimum trace width and heatsinking requirements |
| VF @ 3A, 25°C | 0.85 V - Forward voltage drop; directly determines conduction loss (2.55W at full load) and thermal design |
| IR @ 100V, 25°C | 100 µA - Reverse leakage current; impacts standby power and high-impedance sensing accuracy |
| IFSM (8.3ms) | 80 A - Non-repetitive surge rating; supports inrush current handling during cold start |
| TJ max | 125°C / 150°C - Maximum junction temperature options; determines derating curve and reliability lifetime |
| RθJA | 50 °C/W - Thermal resistance from junction to ambient; used to calculate temperature rise on standard FR-4 board |
Pinout & Package
Package: DO-201AD - Axial-leaded, molded plastic case with cathode band marking; UL 94V-0 rated compound; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or buck converter switch node) |
| Cathode (Lead 2, banded end) | Output current exit point | Connected to output capacitor and load; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enables stable VRRM performance under dv/dt stress up to 10,000 V/µs without premature avalanche |
| AEC-Q101 qualified variant available | Supports automotive-grade reliability requirements including temperature cycling, HTRB, and ESD testing |
| Low VF at high IF | 0.85V at 3A reduces conduction losses by ~15% vs. comparable 100V Si diodes, improving system efficiency |
| Halogen-free construction | Meets IEC 61249-2-21; eliminates brominated flame retardants for RoHS-compliant manufacturing and recycling |
| High IFSM capability | 80A surge rating allows use in applications with high capacitive loads or intermittent short-circuit conditions |
Applications
| Server Power Supply | Industrial DC-DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 48V–12V isolated buck-derived converters delivering up to 36W. IC Role / Device Role / Timing Role: Uncontrolled rectifier conducting during positive half-cycle of transformer secondary voltage. Use Value: 0.85V VF minimizes conduction loss at 3A, reducing heat sink size and enabling higher power density than silicon alternatives. | Use Scenario: Output rectification in 24V-input industrial DC-DC modules powering PLC I/O stages. IC Role / Device Role / Timing Role: Freewheeling path for inductive loads and main output rectifier in flyback or forward topologies. Use Value: 100µA IR at 100V ensures low standby leakage, critical for energy-sensitive control systems meeting IEC 62304 Class C requirements. |
| Automotive Infotainment Adapter | Telecom Wall Adapter |
Use Scenario: 12V output rectification in AEC-Q101-qualified AC-DC adapter powering head unit displays. IC Role / Device Role / Timing Role: Primary output rectifier subjected to load transients and thermal cycling per automotive qualification. Use Value: Guard ring + 150°C TJ max enables operation across -40°C to +105°C ambient with validated reliability per AEC-Q101 stress tests. | Use Scenario: High-volume 5V/3A wall adapter for VoIP phones and small network devices. IC Role / Device Role / Timing Role: Cost-optimized, high-efficiency output rectifier replacing higher-VF silicon diodes. Use Value: DO-201AD package supports automated insertion and reflow; 500-unit ammo box packaging aligns with high-mix SMT assembly logistics. |
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-M3/5AT | 100V VRRM, 3A IF, VF = 0.79V @ 3A, DO-201AD, AEC-Q101 qualified | Lower VF improves efficiency but requires validation of tighter 0.79V tolerance in existing thermal design | Preferred where <0.8V VF is required and AEC-Q101 compliance is mandatory |
| ON Semiconductor SB3100 | 100V VRRM, 3A IF, VF = 0.82V @ 3A, DO-201AD, non-AEC-Q101 | Slightly lower VF and same package; lacks automotive qualification documentation | Suitable for industrial/commercial designs where AEC-Q101 is not required and 0.03V VF reduction is valuable |
Compared with SR310 A0G, VS-3EJH01-M3/5AT offers lower VF and guaranteed AEC-Q101 status but may require layout review for thermal margin, while SB3100 provides marginal VF improvement without automotive certification-making SR310 A0G the balanced choice for cost-sensitive, thermally constrained, or automotive-adjacent applications.
Availability
SR310 A0G is available at Aetrix Electronics and suitable for switching mode power supplies, DC-DC converters, and AC-DC adapters requiring stable component supply, consistent DO-201AD form factor, and verified 100V/3A Schottky performance.
Supply support for SR310 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 global power management and protection markets since 1979.
The SR302–SR320 series was designed specifically for high-efficiency, cost-sensitive rectification in consumer, industrial, and automotive auxiliary power supplies-emphasizing low VF, robust surge capability, and standardized DO-201AD manufacturability.
FAQ
What is the maximum junction temperature rating for SR310 A0G?
The SR310 A0G has dual maximum junction temperature ratings: 125°C for standard grade and 150°C for extended-temperature variants. The specific rating depends on the internal die process and is confirmed in the TSC datasheet revision J2105. Always consult the device marking and ordering code to verify which TJ max applies to your SR310 A0G lot.
Is SR310 A0G AEC-Q101 qualified?
No, SR310 A0G is not AEC-Q101 qualified. Only the "H" suffix variants (e.g., SR310H or SR310HA0G) undergo full AEC-Q101 stress testing. SR310 A0G shares the same DO-201AD package and electrical specs but lacks the automotive qualification documentation and test reports required for automotive applications.
What does the "A0G" suffix mean in SR310 A0G?
The "A0G" suffix in SR310 A0G indicates 500-piece ammo box packaging and green (halogen-free) molding compound per IEC 61249-2-21. It does not denote AEC-Q101 qualification-that requires the "H" prefix. The base SR310 defines 100V VRRM; "A0G" specifies packaging and environmental compliance only.
Can SR310 A0G replace SR306 in an existing design?
SR310 A0G (100V VRRM) is not a direct replacement for SR306 (60V VRRM) unless the circuit's peak reverse voltage remains below 60V. Using SR310 A0G in place of SR306 introduces unnecessary voltage margin but may increase VF slightly (0.85V vs. 0.70V), raising conduction loss. Verify reverse voltage stress and thermal impact before substitution.
What is the typical reverse leakage current of SR310 A0G at 100°C?
Per the TSC datasheet J2105, SR310 A0G exhibits ≤2 mA reverse leakage current at 100V and TJ = 125°C. At 100°C junction temperature, the value is not explicitly tabulated but falls between the 25°C (100 µA) and 125°C (2 mA) limits-typically ~0.5–1 mA based on exponential IR vs. temperature behavior of Schottky diodes.
SR310 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):
- 100 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 @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR310 A0G FAQ
1.How can I place an order for SR310 A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR310 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 SR310 A0G reliable?
The price and inventory of SR310 A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR310 A0G is usually 5 days.
3.What payment methods are accepted for SR310 A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR310 A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR310 A0G?
SR310 A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR310 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 SR310 A0G?
For technical support, including SR310 A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR310 A0G requirements.
6.How does Aetrix verify that SR310 A0G is sourced from the original manufacturer or authorized distributors?
All SR310 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 SR310 A0G meets industry standards.
7.What is the process for return or replacement of SR310 A0G?
All SR310 A0G units undergo pre-shipment inspection (PSI). If there is an issue with SR310 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 SR310 A0G part is unused and in its original packaging.
Return procedure for SR310 A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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