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Taiwan Semiconductor Corporation SR320 B0G
- Part No.:
- SR320 B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR320 B0G.pdf
- Description:
- DIODE SCHOTTKY 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
SR320 B0G from Taiwan Semiconductor is a 3A, 200V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (VF = 0.95 V @ 3A, 25°C), high surge current capability (IFSM = 80 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in high-efficiency DC/DC converters and industrial SMPS.
For engineers reviewing the SR320 B0G datasheet, SR320 B0G pinout, SR320 B0G application, or SR320 B0G equivalent, key selection criteria include reverse voltage margin (200 V VRRM), thermal resistance (RθJA = 50 °C/W), RoHS/halogen-free compliance, and AEC-Q101 qualification status of related variants.
Technical Context
The SR320 B0G is a single-die Schottky rectifier optimized for high-frequency switching applications. Its 200 V repetitive peak reverse voltage (VRRM) and 80 A non-repetitive surge rating support robust operation under transient load conditions in offline and isolated DC/DC topologies.
Thermal performance is defined by RθJC = 15 °C/W and RθJA = 50 °C/W, with junction temperature range from –55°C to +150°C. Reverse leakage remains ≤100 µA at 25°C and ≤2 mA at 125°C, enabling stable performance in elevated ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports input/output isolation in 170–200 VDC bus systems |
| IF | 3 A continuous - rated for sustained conduction in compact power stages |
| VF @ 3A, 25°C | 0.95 V - reduces conduction loss vs. silicon diodes, improving efficiency above 100 kHz |
| IFSM | 80 A - withstands startup surges and short-circuit transients without failure |
| TJ max | +150°C - enables operation in sealed enclosures or high-ambient industrial environments |
| RθJA | 50 °C/W - requires ≥1.5 cm² copper pour for full 3 A derating at 70°C ambient |
| IR @ 200 V, 25°C | ≤100 µA - minimizes standby power loss in energy-sensitive designs |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated and solderable per J-STD-002. Polarity is unambiguous: banded end = cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to transformer secondary or switch node; carries full load current |
| Cathode | Negative output terminal | Connected to output filter capacitor; marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents premature edge breakdown at 200 V, improving reliability under voltage stress |
| Halogen-free molding compound | Complies with IEC 61249-2-21; eliminates corrosive gas emission during reflow or fire |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint integrity in automotive and industrial vibration environments |
| UL 94V-0 flammability rating | Self-extinguishing encapsulant meets safety standards for enclosed power supplies |
Applications
| Server Power Supply | Industrial DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 48 V input, 12 V/3 A output telecom PSUs. IC Role / Device Role / Timing Role: Uncontrolled Schottky rectifier replacing MOSFET-based synchronous solution where gate drive complexity must be avoided. Use Value: Delivers 0.95 V VF at full load, reducing conduction loss by ~35% vs. 1N5822 while maintaining DO-201AD footprint compatibility. | Use Scenario: Output rectification in DIN-rail mounted 24 V/3 A isolated DC/DC modules for PLC I/O power rails. IC Role / Device Role / Timing Role: High-reliability freewheeling path for flyback or forward converter outputs operating continuously at 60–70°C ambient. Use Value: +150°C TJ rating and ≤2 mA IR at 125°C ensure stable regulation over full industrial temperature range without derating. |
| USB-C PD Adapter | Automotive Infotainment Power |
Use Scenario: Secondary-side rectification in compact 65 W USB-C PD adapters using active clamp flyback topology. IC Role / Device Role / Timing Role: Fast-recovery, low-loss rectifier handling 100–200 kHz switching with minimal reverse recovery charge. Use Value: Low VF and 10,000 V/µs dv/dt rating suppress ringing and EMI during hard-switched transitions. | Use Scenario: 12 V auxiliary rail rectification in head unit power supply meeting AEC-Q101 requirements. IC Role / Device Role / Timing Role: Qualified discrete rectifier used in production-grade infotainment systems where component-level qualification is mandatory. Use Value: While SR320 B0G itself is not AEC-Q101 qualified, its SR320H variant shares identical electrical specs and DO-201AD package-enabling direct upgrade path. |
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-3EWH02-M3/5BT | 200 V VRRM, 3 A IF, VF = 0.72 V @ 3A - lower VF but DO-214AC (SMA) package | Requires PCB layout change; better suited for surface-mount automated assembly | Select when board space is constrained and SMT process is available |
| ON Semiconductor SB320-E3/54 | 200 V VRRM, 3 A IF, VF = 0.95 V @ 3A, DO-201AD package - identical mechanical fit | No layout change required; same lead pitch and thermal profile | Preferred drop-in alternative with validated industrial reliability data |
Compared with SR320 B0G, VS-3EWH02-M3/5BT offers lower conduction loss but demands re-layout, while SB320-E3/54 delivers identical electrical and mechanical behavior with broader long-term supply visibility-making it optimal for design continuity.
Availability
SR320 B0G is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.
Supply support for SR320 B0G 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 consumer markets since 1979.
The SR302–SR320 series targets cost-sensitive, high-volume power conversion applications where Schottky efficiency, thermal robustness, and standardized axial packaging are critical-especially in adapter, server PSU, and industrial DC/DC segments.
FAQ
What is the maximum junction temperature rating for SR320 B0G?
The SR320 B0G has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings table in the official TSC datasheet (Version J2105). This allows reliable operation in sealed enclosures or high-ambient industrial environments where heatsinking is limited. Derating begins above +70°C ambient, per the forward current derating curve in Figure 1.
Is SR320 B0G AEC-Q101 qualified?
No, SR320 B0G is not AEC-Q101 qualified. The "B0G" suffix denotes green, halogen-free packaging and tape-and-reel packing (1,250 pcs), but does not indicate automotive qualification. For AEC-Q101 compliance, select SR320H or SR320HA0G - both share identical electrical specs and DO-201AD package but undergo additional stress testing per AEC-Q101 standard.
What is the forward voltage of SR320 B0G at 3 A and 125°C?
The SR320 B0G forward voltage (VF) is not specified at 125°C in the TSC datasheet. Only VF at 25°C (max 0.95 V @ 3 A) and reverse current (IR) at 125°C (max 2 mA @ 200 V) are provided. VF increases with temperature; typical Schottky behavior suggests ~0.85–0.90 V at 125°C, but design margins should rely on the 25°C spec unless measured.
Does SR320 B0G have a guard ring structure?
Yes, SR320 B0G incorporates a guard ring structure, explicitly listed under FEATURES in the TSC datasheet. This design mitigates edge breakdown under high dv/dt or voltage overstress conditions, enhancing ruggedness in flyback and forward converter applications where voltage spikes exceed nominal VRRM.
What is the thermal resistance from junction to ambient (RθJA) for SR320 B0G?
The junction-to-ambient thermal resistance (RθJA) for SR320 B0G is 50 °C/W, measured under standard JEDEC test conditions (single device on FR-4 board with 1 in² copper area). This value assumes no added heatsink; actual board-level RθJA will vary with copper area, layer count, and airflow. RθJC is 15 °C/W for case-to-junction conduction path.
SR320 B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR320 B0G FAQ
1.How can I place an order for SR320 B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR320 B0G 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 SR320 B0G reliable?
The price and inventory of SR320 B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR320 B0G is usually 5 days.
3.What payment methods are accepted for SR320 B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR320 B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR320 B0G?
SR320 B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR320 B0G 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 SR320 B0G?
For technical support, including SR320 B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR320 B0G requirements.
6.How does Aetrix verify that SR320 B0G is sourced from the original manufacturer or authorized distributors?
All SR320 B0G 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 SR320 B0G meets industry standards.
7.What is the process for return or replacement of SR320 B0G?
All SR320 B0G units undergo pre-shipment inspection (PSI). If there is an issue with SR320 B0G, 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 SR320 B0G part is unused and in its original packaging.
Return procedure for SR320 B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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