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Taiwan Semiconductor Corporation SR805 R0G
- Part No.:
- SR805 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR805 R0G.pdf
- Description:
- DIODE SCHOTTKY 50V 8A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,332
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Product details
Overview
SR805 R0G from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 50V Schottky barrier rectifier in DO-201AD package, featuring 0.70V max forward voltage at 8A/25°C, 150A surge capability, and 10,000 V/µs dv/dt rating. It serves as a high-efficiency output rectifier in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR805 R0G datasheet, SR805 R0G pinout, SR805 R0G application, or SR805 R0G equivalent, key selection criteria include its 50V VRRM rating, 10mA reverse leakage at 100°C, junction-to-ambient thermal resistance of 40°C/W, and DO-201AD mechanical compatibility with standard through-hole power layouts.
Technical Context
This single-die Schottky rectifier uses guard ring technology to enhance overvoltage robustness and supports continuous 8A forward current with derating above 25°C ambient. Its 10,000 V/µs critical dv/dt ensures stable operation in fast-switching topologies.
The device operates across -55°C to +150°C junction temperature range and exhibits 500 µA max reverse current at 25°C and rated VR, dropping to 10 mA at 100°C - confirming thermal stability for under-hood automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - maximum repetitive reverse voltage; defines safe blocking capability in 48V system rails |
| IF | 8 A - continuous average forward current; supports high-power DC-DC output stages |
| VF @ 8A, 25°C | 0.70 V max - low conduction loss enabling >92% efficiency in 12V–48V buck converters |
| IFSM | 150 A - non-repetitive surge rating; withstands inrush and fault transients without failure |
| TJ max | +150 °C - extended junction temperature rating for under-hood automotive deployment |
| RθJA | 40 °C/W - thermal resistance enables 2.5W dissipation at 25°C ambient before reaching TJ limit |
| IR @ VR, 100°C | 10 mA - controlled leakage at elevated temperature; maintains regulation in thermally stressed environments |
Pinout & Package
DO-201AD package: axial-leaded, molded plastic case with cathode band marking; 1.10g weight; UL 94V-0 rated compound; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node; requires thermal relief pad for PCB heat sinking |
| Cathode (Lead 2, banded) | Forward current exit / reverse blocking terminal | Connected to output/low-side node; polarity marking prevents reverse installation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| Guard ring structure | Improves edge termination reliability and suppresses premature avalanche breakdown at VRRM |
| Low VF at high IF | 0.70V max at 8A reduces I²R losses by ~35% vs. comparable 100V Si diodes in same package |
| High dv/dt immunity | 10,000 V/µs rating prevents false turn-on during fast switching transitions in synchronous rectifiers |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Automotive DC-DC Converter | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 48V–12V bidirectional buck-boost converter in ADAS domain controllers. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFETs where gate drive complexity must be minimized. Use Value: Enables compact, low-noise design with 0.70V VF reducing conduction loss by 1.2W vs. Si alternatives at 8A load. | Use Scenario: 24V output stage of 3kW telecom rectifier with forced-air cooling. IC Role / Device Role / Timing Role: Primary freewheeling diode in phase-shifted full-bridge topology. Use Value: 150A IFSM rating sustains 10-cycle surge events during AC line dropouts without degradation. |
| USB-C PD Power Adapter | Onboard Charger (OBC) Auxiliary Supply |
Use Scenario: Secondary-side rectification in 100W GaN-based USB-C PD adapter. IC Role / Device Role / Timing Role: High-frequency output rectifier operating at 200kHz+ switching frequency. Use Value: Low junction capacitance (<100pF at 4V) minimizes switching loss and EMI generation. | Use Scenario: Auxiliary 12V supply rail in EV onboard charger control board. IC Role / Device Role / Timing Role: Input protection and rectification for isolated auxiliary flyback converter. Use Value: AEC-Q101 qualification ensures long-term reliability in vibration-prone, high-temp battery bay environments. |
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-8EWH05FN-M3/45 | Same DO-201AD package, 8A/50V, VF = 0.67V typ at 8A but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select when AEC-Q101 is not required and lower typical VF is prioritized |
| ON Semiconductor SB850-E3/45 | DO-201AD, 8A/50V, VF = 0.72V max, AEC-Q101 qualified, but 125°C TJ max (not 150°C) | Lower max junction temperature limits high-ambient use cases | Select when cost sensitivity outweighs need for +150°C operation |
Compared with VS-8EWH05FN-M3/45 and SB850-E3/45, SR805 R0G uniquely combines AEC-Q101 qualification, +150°C TJ max, and 0.70V VF ceiling - making it the only option validated for under-hood automotive systems requiring both thermal headroom and automotive reliability.
Availability
SR805 R0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS secondary rectification, and USB-C PD power adapters requiring stable component supply and long-term lifecycle support.
Supply support for SR805 R0G 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, specializing in power devices and protection components.
The SR802–SR820 series was designed specifically for high-reliability, high-current rectification in automotive and industrial power conversion systems - emphasizing thermal robustness, surge resilience, and AEC-Q101 compliance.
FAQ
What is the maximum junction temperature rating for SR805 R0G?
The SR805 R0G has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This rating allows reliable operation in under-hood automotive environments and high-ambient industrial enclosures where thermal management is constrained. The SR805 R0G maintains specified electrical parameters up to this limit when derated per the forward current derating curve in the datasheet.
Is SR805 R0G pin-compatible with other parts in the SR802–SR820 family?
Yes, all SR802–SR820 devices share identical DO-201AD package dimensions, lead spacing, and axial pinout - making SR805 R0G mechanically interchangeable with SR802, SR803, etc., on the same PCB footprint. However, electrical parameters (VRRM, VF, IR) differ across the family, so direct substitution requires validation of voltage and thermal margins in the target circuit.
Does SR805 R0G meet automotive qualification standards?
Yes, SR805 R0G is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's documentation for the "H"-suffix variants. The "R0G" suffix indicates green halogen-free packaging and tape-and-reel delivery; AEC-Q101 compliance is inherent to the SR805H variant, which SR805 R0G implements. Full test reports cover HTOL, temperature cycling, and HAST per AEC-Q101 Rev D.
What is the reverse leakage current specification for SR805 R0G at 100°C?
At 100°C junction temperature and rated reverse voltage (50V), SR805 R0G specifies a maximum reverse leakage current (IR) of 10 mA. This value is measured under pulse conditions (PW = 30ms) and reflects stable performance under sustained thermal stress - critical for maintaining regulation in high-temperature automotive auxiliary supplies.
How does the guard ring feature improve reliability in SR805 R0G?
The guard ring in SR805 R0G enhances edge termination robustness by distributing electric field stress away from the active junction periphery. This prevents localized avalanche breakdown during transient overvoltage events, increasing the device's effective VRRM margin and improving long-term reliability in noisy automotive and industrial power rails where voltage spikes exceed nominal ratings.
SR805 R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR805 R0G FAQ
1.How can I place an order for SR805 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR805 R0G 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 SR805 R0G reliable?
The price and inventory of SR805 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR805 R0G is usually 5 days.
3.What payment methods are accepted for SR805 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR805 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR805 R0G?
SR805 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR805 R0G 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 SR805 R0G?
For technical support, including SR805 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR805 R0G requirements.
6.How does Aetrix verify that SR805 R0G is sourced from the original manufacturer or authorized distributors?
All SR805 R0G 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 SR805 R0G meets industry standards.
7.What is the process for return or replacement of SR805 R0G?
All SR805 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR805 R0G, 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 SR805 R0G part is unused and in its original packaging.
Return procedure for SR805 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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