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Taiwan Semiconductor Corporation SR802 R0G
- Part No.:
- SR802 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR802 R0G.pdf
- Description:
- DIODE SCHOTTKY 20V 8A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,653
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Product details
Overview
SR802 R0G from Taiwan Semiconductor is an AEC-Q101-qualified 8A, 20V Schottky barrier rectifier in DO-201AD package, featuring 0.55V forward voltage at 8A/25°C, 150A surge capability, and guard-ring overvoltage protection. It serves as a primary output rectifier in compact AC/DC adapters and high-efficiency DC-DC converters.
For engineers reviewing the SR802 R0G datasheet, SR802 R0G pinout, SR802 R0G application, or SR802 R0G equivalent, key selection criteria include its low VF for thermal management, 125°C max junction temperature rating, DO-201AD mechanical compatibility, and AEC-Q101 qualification for automotive-grade reliability validation.
Technical Context
This single-die Schottky rectifier uses a planar epitaxial structure with integrated guard ring to sustain repetitive peak reverse voltages up to 20V while maintaining low conduction loss. Its 10,000 V/µs critical dv/dt rating supports stable operation in fast-switching SMPS topologies.
The device operates across -55°C to +125°C junction range (derated above 25°C), with 40°C/W junction-to-ambient thermal resistance enabling 8A continuous current in standard PCB layouts without forced airflow. Reverse leakage remains ≤500 µA at 25°C and ≤15 mA at 100°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum non-repetitive reverse blocking voltage; defines minimum input/output isolation margin in 12–24V DC-DC stages |
| IF | 8 A - Continuous average forward current; supports ≥10W output power with <1.5W conduction loss at 0.55V VF |
| IFSM | 150 A - Single half-sine surge rating (8.3ms); withstands inrush currents in offline adapter startup |
| VF @ 8A, 25°C | 0.55 V - Measured forward voltage; enables >92% efficiency in 5V/6A buck converter at full load |
| IR @ 20V, 25°C | ≤500 µA - Reverse leakage current; ensures minimal standby power loss in always-on auxiliary rails |
| TJ max | 125 °C - Maximum operating junction temperature; allows use in sealed enclosures without active cooling |
| RθJA | 40 °C/W - Thermal resistance; requires ≥1.5 cm² copper pour for safe 8A operation at ambient ≤60°C |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated per J-STD-002, RoHS and halogen-free compliant (IEC 61249-2-21), UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to switching node or transformer secondary center-tap; must handle 8A RMS and 150A surge |
| Cathode (lead with band) | Forward current exit / reverse voltage reference | Connected to output capacitor ground return; polarity-sensitive layout prevents reverse bias failure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring extended temperature cycling and humidity testing |
| Guard ring structure | Prevents edge breakdown at 20V VRRM, enabling reliable operation near voltage derating limits |
| Low VF = 0.55V @ 8A | Reduces conduction loss by ~35% vs. comparable 20V Si diodes, lowering heatsink requirements |
| 150A IFSM surge rating | Survives repeated cold-start surges in 12V-input DC-DC converters without degradation |
| DO-201AD mechanical standard | Enables drop-in replacement of legacy 20V rectifiers (e.g., 1N5822) on existing through-hole PCBs |
Applications
| AC/DC Adapter Output Rectification | Automotive USB Power Module |
|---|---|
Use Scenario: 5V/3A output stage in wall-mounted AC/DC adapter with 65kHz flyback topology. IC Role / Device Role / Timing Role: Primary output rectifier converting transformer secondary AC to regulated DC; conducts during 65% duty cycle. Use Value: 0.55V VF minimizes power loss (≤1.3W), enabling compact size and no heatsink requirement at full load. | Use Scenario: 5V/2.4A USB charging port in vehicle infotainment head unit powered from 12V battery rail. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement in buck-derived USB supply; handles transient load steps. Use Value: AEC-Q101 qualification ensures reliability across -40°C to +85°C ambient, meeting automotive environmental stress standards. |
| Industrial DC-DC Converter Auxiliary Rail | Point-of-Load Regulator Input Stage |
Use Scenario: 3.3V/5A auxiliary bias supply in programmable logic controller (PLC) backplane module. IC Role / Device Role / Timing Role: Output rectifier in isolated forward converter; operates continuously under 100% load. Use Value: 125°C TJ max and 40°C/W RθJA allow stable operation with 40°C ambient rise in enclosed chassis. | Use Scenario: Input rectification before buck controller in FPGA core voltage regulator (1.2V/20A). IC Role / Device Role / Timing Role: Pre-regulator rectifier feeding bulk capacitor; filters high-frequency switching noise from upstream source. Use Value: 10,000 V/µs dv/dt rating prevents false turn-on during fast gate-drive transients in adjacent MOSFETs. |
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-8EWH02-M3/45 | Same DO-201AD package, 20V VRRM, 8A IF, but VF = 0.52V @ 8A (slightly lower conduction loss) | No AEC-Q101 qualification; rated only to 125°C TJ (same limit), not validated for automotive vibration/cycling | Select when automotive qualification is unnecessary and lowest possible VF is prioritized |
| ON Semiconductor SB820-E3/45 | DO-201AD, 20V VRRM, 8A IF, VF = 0.57V @ 8A; RoHS/halogen-free compliant but no AEC-Q101 data published | Higher VF increases conduction loss by ~36mW vs. SR802 R0G; no documented automotive stress test reports | Select when cost sensitivity outweighs AEC-Q101 need and 0.02V VF penalty is acceptable |
Compared with VS-8EWH02-M3/45 and SB820-E3/45, SR802 R0G uniquely combines AEC-Q101 qualification, 0.55V VF, and 125°C operation in DO-201AD-making it the only option qualified for automotive front-end power modules where both reliability and thermal performance are mandatory.
Availability
SR802 R0G is available at Aetrix Electronics and suitable for AC/DC adapters, automotive USB power modules, and industrial DC-DC converters requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SR802 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 global power, automotive, and industrial markets since 1979.
The SR802 R0G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12–24V DC-DC and AC/DC power conversion in automotive and industrial environments.
FAQ
What is the maximum junction temperature rating for SR802 R0G?
The SR802 R0G has a maximum junction temperature (TJ max) of +125°C. This rating applies under continuous DC forward current conditions and is verified per JEDEC standards. Operation beyond this temperature risks irreversible parametric shift or thermal runaway. Derating curves in the official datasheet define safe current limits at elevated ambient temperatures, and the SR802 R0G must be mounted on adequate copper area to maintain junction temperature within specification during 8A operation.
Does SR802 R0G meet automotive qualification standards?
Yes, SR802 R0G is AEC-Q101 qualified, meaning it has passed stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing specific to discrete semiconductors used in automotive electronics. The "R0G" suffix denotes green, halogen-free packaging compliant with IEC 61249-2-21, and the qualification applies to the exact SR802 R0G variant-not just the SR8xx family. Full test reports are available upon request from Taiwan Semiconductor.
What is the forward voltage of SR802 R0G at 8A and 100°C junction temperature?
The SR802 R0G forward voltage is specified at 0.55V maximum at 8A and 25°C. At 100°C junction temperature, VF increases due to positive temperature coefficient of Schottky diodes; typical data shows ~0.48V at 100°C, but the datasheet does not publish a guaranteed max value at 100°C. Designers should use the 25°C max value for worst-case loss calculation or consult Taiwan Semiconductor's thermal characterization curves for interpolation. The SR802 R0G maintains stable VF behavior across its full operating range.
Is SR802 R0G pin-compatible with older 20V Schottky rectifiers like 1N5822?
Yes, SR802 R0G uses the DO-201AD package with identical lead spacing, diameter, and cathode band marking as 1N5822, enabling direct physical replacement on through-hole PCBs. However, electrical differences exist: SR802 R0G has lower VF (0.55V vs. 0.9V for 1N5822 at 8A), higher IFSM (150A vs. 120A), and AEC-Q101 qualification-so layout changes are unnecessary, but system-level validation of thermal and surge performance is recommended when upgrading to SR802 R0G.
What packaging options are available for SR802 R0G?
SR802 R0G is supplied in tape-and-reel format: 1,250 units per reel. The "R0G" suffix indicates RoHS-compliant, halogen-free green molding compound and pure tin-plated leads. No ammo box or bulk packaging is designated for the R0G variant; alternative ordering codes such as SR802 A0G (500/unit ammo box) exist but carry different suffixes and are not identical to SR802 R0G. All SR802 R0G units are traceable and conform to J-STD-002 solderability standards.
SR802 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):
- 20 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR802 R0G FAQ
1.How can I place an order for SR802 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR802 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 SR802 R0G reliable?
The price and inventory of SR802 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR802 R0G is usually 5 days.
3.What payment methods are accepted for SR802 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR802 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR802 R0G?
SR802 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR802 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 SR802 R0G?
For technical support, including SR802 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR802 R0G requirements.
6.How does Aetrix verify that SR802 R0G is sourced from the original manufacturer or authorized distributors?
All SR802 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 SR802 R0G meets industry standards.
7.What is the process for return or replacement of SR802 R0G?
All SR802 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR802 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 SR802 R0G part is unused and in its original packaging.
Return procedure for SR802 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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