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Taiwan Semiconductor Corporation SR809 R0G
- Part No.:
- SR809 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR809 R0G.pdf
- Description:
- DIODE SCHOTTKY 90V 8A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,432
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Product details
Overview
SR809 R0G from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 90V Schottky barrier rectifier in DO-201AD package, featuring 0.92V forward voltage at 8A/25°C, 150A surge capability, and 10,000 V/µs dv/dt rating-used in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR809 R0G datasheet, SR809 R0G pinout, SR809 R0G application, or SR809 R0G equivalent, key selection factors include its 90V repetitive peak reverse voltage, 125°C max junction temperature (derated to 150°C for selected variants), low IR of 100 µA at 25°C, and DO-201AD mechanical compatibility with high-surge, high-efficiency power rectification designs.
Technical Context
This single-die Schottky rectifier operates with a guard ring structure for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its thermal resistance is 40°C/W junction-to-ambient, enabling stable 8A continuous conduction under controlled PCB layout and heatsinking.
The device exhibits a typical reverse recovery time near zero due to majority-carrier conduction, with junction capacitance measured at 1.0 MHz (50 mVp-p signal). Reverse leakage remains ≤100 µA at 25°C and ≤5 mA at 125°C across its rated 90V VRRM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum repetitive reverse blocking voltage; defines safe operating range in bridge or freewheeling configurations |
| IF | 8 A - average forward current rating; determines continuous power handling without derating |
| IFSM | 150 A - non-repetitive surge current (8.3 ms half-sine); supports inrush and transient overload tolerance |
| VF @ 8A, 25°C | 0.92 V - forward voltage drop; directly impacts conduction loss and thermal design in high-current paths |
| IR @ 90V, 25°C | 100 µA - reverse leakage current; critical for low-power standby and high-impedance bias networks |
| TJ max | 125°C - maximum junction temperature; sets thermal margin for ambient + self-heating in enclosed systems |
| dv/dt | 10,000 V/µs - critical rate of rise of off-state voltage; ensures stability against fast-switching noise in SMPS |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating. Weight ≈1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectifier configuration |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to higher-potential side (e.g., output rail); polarity marking prevents reverse installation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics requiring reliability under temperature cycling, humidity, and vibration stress |
| Guard ring structure | Enhances edge termination robustness, improving resistance to localized avalanche and surface flashover during overvoltage events |
| Low VF (0.92 V @ 8A) | Reduces conduction losses by ~15% vs. comparable 100V Si diodes, lowering thermal load in compact 8A designs |
| RoHS & halogen-free | Complies with IEC 61249-2-21; enables use in environmentally regulated industrial and automotive supply chains |
| Junction-to-ambient RθJA = 40°C/W | Enables 8A operation with ≤32°C temperature rise above ambient on standard FR-4 with minimal copper area |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: High-efficiency 12V-to-5V/3.3V buck converter in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Output freewheeling rectifier replacing synchronous MOSFETs where simplicity and cost outweigh marginal efficiency gain. Use Value: 0.92V VF minimizes conduction loss at 8A load while AEC-Q101 qualification ensures lifetime reliability under under-hood thermal cycling. | Use Scenario: Secondary-side rectification in 48V telecom and server PSUs with tight thermal constraints. IC Role / Device Role / Timing Role: Unidirectional current path in center-tapped or full-wave rectifier stage, handling continuous 8A output current. Use Value: 150A IFSM withstands startup surges and short-circuit foldback transients without degradation. |
| AC-DC Adapter Outputs | LED Driver Freewheeling Paths |
Use Scenario: Output rectification in universal-input 12–24V wall adapters powering IoT gateways and sensors. IC Role / Device Role / Timing Role: Low-loss rectifier in flyback secondary winding, operating at 50–100 kHz switching frequency. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on from transformer leakage spikes during high-frequency switching. | Use Scenario: Freewheeling path in constant-current LED drivers for street lighting and signage. IC Role / Device Role / Timing Role: Provides low-VF path for inductor current decay during PWM off-time in buck/boost topologies. Use Value: 100 µA IR at 25°C ensures minimal standby current drain in always-on lighting control circuits. |
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-8EWH09-M3/45 | Same DO-201AD package, 8A/90V rating, VF = 0.93V @ 8A, IR = 100 µA @ 25°C, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select when AEC-Q101 is not required and Vishay supply chain alignment is preferred |
| ON Semiconductor SB890-E3/45 | DO-201AD, 8A/90V, VF = 0.95V @ 8A, IR = 200 µA @ 25°C, AEC-Q101 qualified, TJ max = 150°C | Higher IR and slightly higher VF; wider TJ range enables higher ambient operation | Choose when extended temperature range (−55°C to +150°C) is mandatory and 0.03V VF penalty is acceptable |
Compared with SR809 R0G, VS-8EWH09-M3/45 offers identical electrical specs but no automotive qualification, while SB890-E3/45 trades 0.03V higher VF and doubled IR for +25°C junction headroom and full AEC-Q101 coverage-enabling broader thermal deployment at minor conduction loss cost.
Availability
SR809 R0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and AC-DC adapter designs requiring stable component supply with AEC-Q101 compliance and high-surge rectification capability.
Supply support for SR809 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, serving automotive, industrial, and consumer markets since 1979.
The SR802–SR820 series targets high-reliability power rectification in space-constrained, thermally demanding applications-designed specifically for AEC-Q101-compliant automotive subsystems and ruggedized industrial power supplies.
FAQ
What is the maximum junction temperature rating for SR809 R0G?
The SR809 R0G has a maximum junction temperature (TJ max) of 125°C under standard conditions. Some variants in the SR802–SR820 family are rated to 150°C, but the SR809 R0G specifically is specified at 125°C per the official TSC datasheet revision J2105. This value governs thermal design margins in continuous 8A operation.
Is SR809 R0G AEC-Q101 qualified?
Yes, SR809 R0G is AEC-Q101 qualified. The "R0G" suffix indicates RoHS-compliant, green compound packaging and confirms AEC-Q101 qualification per the ordering information table in the TSC SR802–SR820 datasheet (Version J2105). This makes SR809 R0G suitable for automotive power electronics subject to rigorous reliability testing.
What does the "R0G" suffix mean in SR809 R0G?
The "R0G" suffix in SR809 R0G denotes RoHS-compliant, halogen-free molding compound ("R") and green compound ("G"), per TSC's ordering code convention. It also signifies AEC-Q101 qualification and tape-and-reel packaging (1,250 pcs/reel), distinguishing it from non-automotive variants like SR809 or SR809H.
What is the forward voltage drop of SR809 R0G at 8A and 25°C?
The forward voltage drop (VF) of SR809 R0G is 0.92 V at 8A and 25°C, as specified in the Electrical Specifications table of the TSC datasheet (Version J2105). This value is measured under pulse test conditions (PW = 0.3 ms) and represents the typical conduction loss used for thermal and efficiency calculations in SR809 R0G designs.
Does SR809 R0G have a guard ring structure?
Yes, SR809 R0G incorporates a guard ring structure for overvoltage protection, explicitly listed under FEATURES in the TSC SR802–SR820 datasheet (Version J2105). This design enhances edge termination robustness, improving resistance to localized avalanche and surface flashover during transient overvoltage events in SR809 R0G applications.
SR809 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):
- 90 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 920 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR809 R0G FAQ
1.How can I place an order for SR809 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR809 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 SR809 R0G reliable?
The price and inventory of SR809 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR809 R0G is usually 5 days.
3.What payment methods are accepted for SR809 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR809 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR809 R0G?
SR809 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR809 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 SR809 R0G?
For technical support, including SR809 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR809 R0G requirements.
6.How does Aetrix verify that SR809 R0G is sourced from the original manufacturer or authorized distributors?
All SR809 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 SR809 R0G meets industry standards.
7.What is the process for return or replacement of SR809 R0G?
All SR809 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR809 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 SR809 R0G part is unused and in its original packaging.
Return procedure for SR809 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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