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Taiwan Semiconductor Corporation SR309HR0G
- Part No.:
- SR309HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR309HR0G.pdf
- Description:
- DIODE SCHOTTKY 90V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,366
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Product details
Overview
SR309HR0G from Taiwan Semiconductor is a 3A, 90V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.85V max forward voltage at 3A and 100µA max reverse leakage at 25°C, used in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR309HR0G datasheet, SR309HR0G pinout, SR309HR0G application, or SR309HR0G equivalent, this page delivers verified electrical specs, thermal performance, packaging details, and direct alternative options for high-reliability power rectification design.
Technical Context
This device operates as a single-die Schottky rectifier with guard ring overvoltage protection and 10,000 V/µs critical dv/dt rating. Its junction temperature range spans –55°C to +150°C, supporting under-hood automotive environments.
Thermal resistance is 50°C/W (junction-to-ambient) and 15°C/W (junction-to-case), enabling stable 3A continuous conduction with appropriate heatsinking. Reverse recovery is inherently negligible due to Schottky architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage; defines safe blocking capability in 72V nominal systems |
| IF | 3 A - Continuous forward current rating; supports compact 36W–45W converter designs |
| IFSM | 80 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush in hot-plug applications |
| VF @ 3A, 25°C | ≤ 0.85 V - Low conduction loss; reduces power dissipation by ~25% vs. comparable 100V Si diodes |
| IR @ 90V, 25°C | ≤ 100 µA - Tight leakage spec; ensures low standby loss in always-on power rails |
| TJ max | +150 °C - Extended junction rating enables operation in high-ambient automotive engine bays |
| RθJA | 50 °C/W - Thermal limit defines minimum PCB copper area required for natural convection cooling |
Pinout & Package
Package: DO-201AD - Axial leaded, molded plastic case meeting UL 94V-0; cathode indicated by band; 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/source side; requires trace width ≥ 0.8mm for 3A continuous routing |
| Cathode (Lead 2, banded) | Forward current exit / reverse blocking terminal | Connected to output/load; polarity marking essential for correct PCB assembly and ESD-safe handling |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power modules requiring zero-defect reliability and extended temperature cycling |
| Guard ring structure | Prevents premature edge breakdown at 90V reverse bias, improving long-term voltage stability |
| 10,000 V/µs dv/dt rating | Enables robust operation in fast-switching topologies without snubber networks |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally regulated end equipment |
| JESD201 Class 2 whisker resistance | Ensures long-term solder joint integrity in vibration-prone automotive harnesses and control units |
Applications
| Automotive Body Control Module (BCM) | Industrial 24V DC-DC Converter |
|---|---|
Use Scenario: Power rail conditioning for microcontroller, CAN transceiver, and sensor supply in under-dash BCM units. IC Role / Device Role / Timing Role: Primary output rectifier in synchronous buck-derived 12V→3.3V/5V isolated or non-isolated converter stage. Use Value: 0.85V VF minimizes heat generation in confined enclosures; AEC-Q101 compliance guarantees 15-year field life. | Use Scenario: Secondary-side rectification in DIN-rail mounted 24V input, 12V/5V dual-output industrial SMPS. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in active-clamp forward or flyback topology. Use Value: 80A IFSM handles repeated load dump surges; 150°C TJ rating sustains full load at 70°C ambient. |
| Telecom Remote Radio Unit (RRU) | Medical Portable Diagnostic Charger |
Use Scenario: Input rectification for 48V backplane-fed auxiliary supplies in outdoor RRU enclosures. IC Role / Device Role / Timing Role: AC-DC front-end bridge replacement in compact offline adapters with PFC pre-regulation. Use Value: 90V VRRM provides 20% margin above 48V nominal; low Cj improves EMI filtering efficiency. | Use Scenario: Battery charging path isolation in portable ultrasound or ECG devices with USB-C PD input. IC Role / Device Role / Timing Role: Reverse-polarity and backfeed protection diode in 5V/9V/15V multi-voltage charge management circuit. Use Value: 100µA IR at 25°C prevents battery self-discharge; DO-201AD axial form factor simplifies manual rework. |
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-3EJH09-M3/45 | Same DO-201AD package, 3A/90V, but rated only to +125°C TJ; no AEC-Q101 certification | Lacks automotive qualification; suitable for commercial-industrial use only | Select when AEC-Q101 is not required and cost sensitivity outweighs temperature margin |
| ON Semiconductor SB390-E3/54 | DO-201AD, 3A/90V, 0.87V VF, 150°C TJ, but not AEC-Q101 qualified | Higher VF increases conduction loss by ~2.5%; no automotive stress validation | Choose for legacy designs where SB390 footprint compatibility is prioritized over qualification |
Compared with VS-3EJH09-M3/45 and SB390-E3/54, SR309HR0G uniquely combines 150°C operation, AEC-Q101 qualification, and 0.85V VF-making it the only option validated for under-hood automotive rectification where both thermal margin and reliability assurance are mandatory.
Availability
SR309HR0G is available at Aetrix Electronics and suitable for automotive body control modules, industrial 24V DC-DC converters, and telecom remote radio units requiring stable component supply across multi-year production cycles.
Supply support for SR309HR0G 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 automotive, industrial, and consumer markets since 1979.
The SR302–SR320 series was designed specifically for high-reliability, medium-current Schottky rectification in space-constrained power supplies where low VF, high surge tolerance, and automotive qualification are jointly required.
FAQ
What is the maximum junction temperature rating for SR309HR0G?
The SR309HR0G has a maximum junction temperature (TJ) of +150°C, confirmed in the Absolute Maximum Ratings table. This rating allows sustained operation in high-ambient environments such as automotive engine compartments or enclosed industrial power supplies. The SR309HR0G must be derated linearly above 25°C ambient per the Forward Current Derating Curve in the datasheet.
Is SR309HR0G pin-compatible with other parts in the SR302–SR320 family?
Yes, all SR302–SR320 devices share identical DO-201AD packaging and axial lead configuration, making SR309HR0G mechanically and electrically pin-compatible with SR302 through SR320. However, voltage ratings and forward voltage differ per variant-SR309HR0G is specifically rated for 90V VRRM and ≤0.85V VF.
Does SR309HR0G meet AEC-Q101 requirements?
Yes, SR309HR0G is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in its ordering code and confirmed in the FEATURES section. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock-validating suitability for automotive power electronics applications.
What is the reverse leakage current specification for SR309HR0G at 125°C?
At 125°C junction temperature and rated 90V reverse voltage, SR309HR0G exhibits ≤2 mA reverse leakage current (IR), per the Electrical Specifications table. This value is critical for evaluating standby power loss in always-on systems and confirms stable high-temperature blocking behavior.
How is the "R0G" suffix interpreted in SR309HR0G?
The "R0G" suffix in SR309HR0G indicates green compound (halogen-free molding material) and tape-and-reel packaging (1,250 pcs/reel), per the Ordering Information table. The "H" denotes AEC-Q101 qualification; "R0G" does not affect electrical parameters but confirms environmental compliance and logistics format.
SR309HR0G 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):
- 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 @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR309HR0G FAQ
1.How can I place an order for SR309HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR309HR0G 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 SR309HR0G reliable?
The price and inventory of SR309HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR309HR0G is usually 5 days.
3.What payment methods are accepted for SR309HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR309HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR309HR0G?
SR309HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR309HR0G 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 SR309HR0G?
For technical support, including SR309HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR309HR0G requirements.
6.How does Aetrix verify that SR309HR0G is sourced from the original manufacturer or authorized distributors?
All SR309HR0G 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 SR309HR0G meets industry standards.
7.What is the process for return or replacement of SR309HR0G?
All SR309HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR309HR0G, 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 SR309HR0G part is unused and in its original packaging.
Return procedure for SR309HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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