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Taiwan Semiconductor Corporation SR302HR0G
- Part No.:
- SR302HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR302HR0G.pdf
- Description:
- DIODE SCHOTTKY 20V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,271
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Product details
Overview
SR302HR0G from Taiwan Semiconductor is a 3A, 20V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.55V max forward voltage at 3A/25°C, 80A surge current capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR302HR0G datasheet, SR302HR0G pinout, SR302HR0G application, or SR302HR0G equivalent, key selection criteria include its AEC-Q101 qualification, 20V VRRM, low VF performance at high IF, thermal resistance (RθJA = 50°C/W), and DO-201AD mechanical compatibility with legacy through-hole power rectifier footprints.
Technical Context
This Schottky rectifier uses a single-die construction optimized for high-efficiency switching conduction. Its 20V repetitive peak reverse voltage and 80A non-repetitive surge rating support transient-heavy input stages in 12V automotive systems and compact AC/DC adapters.
The device operates across –55°C to +150°C junction temperature range and delivers <500µA reverse leakage at 25°C and rated VR, enabling stable operation in thermally constrained environments without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum continuous reverse blocking voltage; defines safe operating limit in 12V rail clamping and flyback snubber circuits |
| IF | 3 A - Continuous average forward current; supports sustained conduction in 36W+ DC-DC output rectification |
| VF (max) | 0.55 V @ 3A, 25°C - Low conduction loss enables >92% efficiency in 5–12V output stages |
| IFSM | 80 A - Peak non-repetitive surge current (8.3ms half-sine); withstands cold-start inrush and load dump transients |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; requires ≤2.5W dissipation for TJ ≤125°C on standard FR4 PCB with 1-in² copper pour |
| TJ max | +150 °C - Extended junction temperature rating enables use in under-hood automotive modules without derating |
| Guard ring | Integrated - Prevents edge breakdown during dv/dt stress >10,000 V/µs, improving reliability in fast-switching topologies |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return path) |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity marking ensures correct orientation in high-reliability automotive layouts |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics per stress test requirements including HTOL, TC, and HAST |
| Low VF (0.55 V max) | Reduces conduction loss by ≥40% vs. comparable Si PN rectifiers, lowering thermal design burden |
| Guard ring structure | Enables stable reverse bias operation up to rated VRRM under high dv/dt conditions common in synchronous rectifier gate drive coupling |
| UL 94V-0 molding compound | Meets flammability safety requirement for enclosed power supplies in industrial and automotive enclosures |
| Halogen-free (IEC 61249-2-21) | Complies with RoHS and ELV directives; eliminates corrosive halogen gas emission during rework or end-of-life incineration |
Applications
| Automotive DC-DC Converter | Industrial SMPS Output Stage |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) with wide ambient temperature range. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 3A load with transient surges up to 80A during load dump events. Use Value: AEC-Q101 qualification and +150°C TJ max ensure functional safety compliance and uninterrupted operation under hood temperatures. | Use Scenario: Secondary-side rectification in 24V-input, 12V-output open-frame industrial SMPS. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode replacing PN types to reduce heat sink size and improve power density. Use Value: 0.55V VF cuts conduction loss by ~1.7W vs. 1.1V Si diode at 3A, enabling passive cooling in space-constrained designs. |
| USB-C PD Adapter | Telecom Power Shelf |
Use Scenario: Synchronous rectifier companion in 65W USB-C PD adapter with GaN primary-side switching. IC Role / Device Role / Timing Role: Low-VF clamp diode during dead-time intervals; guards against reverse recovery spikes. Use Value: Guard ring and 10,000 V/µs dv/dt rating prevent false turn-on and EMI generation in high-frequency (>100kHz) topologies. | Use Scenario: Input rectification stage of -48V telecom power shelf with redundant AC inputs. IC Role / Device Role / Timing Role: Bridge leg component in full-wave rectifier configuration handling 3A average current per diode. Use Value: DO-201AD mechanical robustness and 1.10g weight support vibration resistance and long-term mechanical stability in rack-mounted systems. |
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-M3/5AT | Same DO-201AD package, 20V VRRM, but rated IF = 3.0A and VF = 0.52V typ @ 3A - slightly lower conduction loss, no AEC-Q101 listing | Targeted at commercial/industrial SMPS only; not validated for automotive temperature cycling or humidity testing | Select when AEC-Q101 is not required and sub-30mV VF reduction justifies sourcing from alternate vendor |
| ON Semiconductor SB320-E3/54 | DO-201AD, 20V VRRM, 3A IF, VF = 0.54V max @ 3A, but TJ max = +125°C and no guard ring | Limited to ambient ≤85°C environments; unsuitable for under-hood or high-dv/dt flyback snubbers | Choose for cost-sensitive consumer adapters where extended temperature and dv/dt immunity are not critical |
Compared with VS-3EWH02-M3/5AT and SB320-E3/54, SR302HR0G uniquely combines AEC-Q101 qualification, +150°C operation, and integrated guard ring-making it the only option qualified for automotive front-end rectification where reliability under thermal and electrical stress is non-negotiable.
Availability
SR302HR0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial SMPS, and USB-C PD adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SR302HR0G 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 rectifiers, TVS devices, and MOSFETs since 1979.
The SR302HR0G belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-reliability automotive power conversion and industrial switching supplies demanding low VF, high surge tolerance, and extended temperature operation.
FAQ
What is the maximum junction temperature rating for SR302HR0G?
The SR302HR0G has a maximum junction temperature rating of +150°C, verified per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments where ambient temperatures exceed 105°C. The SR302HR0G's thermal design must maintain TJ ≤150°C using appropriate PCB copper area and airflow, especially at full 3A load.
Is SR302HR0G pin-compatible with standard DO-201AD rectifiers?
Yes, SR302HR0G uses the industry-standard DO-201AD axial package with identical mechanical dimensions and lead spacing as legacy silicon rectifiers. Its anode and cathode terminals follow conventional DO-201AD polarity (cathode band marked), enabling direct footprint replacement without PCB redesign-provided thermal and surge requirements are verified.
Does SR302HR0G have AEC-Q101 qualification documentation available?
Yes, SR302HR0G carries full AEC-Q101 qualification per Rev. J2105 documentation, covering HTOL, temperature cycling, HAST, and mechanical shock tests. Certification reports are available upon request from Taiwan Semiconductor and authorized distributors. The "H" suffix in SR302HR0G explicitly denotes AEC-Q101 compliance.
What is the typical forward voltage drop of SR302HR0G at 3A and 100°C junction temperature?
While the datasheet specifies VF ≤0.55V max at 3A and 25°C, SR302HR0G exhibits positive temperature coefficient behavior. At 100°C junction temperature and 3A, measured VF typically rises to ≈0.62V. This increase is factored into thermal design margins and remains well below competing Si diodes at same conditions.
Can SR302HR0G be used in place of a 1N5822 in an existing design?
SR302HR0G is a functional upgrade to 1N5822 (3A, 40V Schottky), offering lower VRRM (20V vs. 40V) but superior specs: AEC-Q101 qualification, +150°C TJ, guard ring, and tighter VF distribution. It can replace 1N5822 only if system reverse voltage never exceeds 20V-and benefits from improved reliability in automotive or high-dv/dt applications.
SR302HR0G 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR302HR0G FAQ
1.How can I place an order for SR302HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR302HR0G 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 SR302HR0G reliable?
The price and inventory of SR302HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR302HR0G is usually 5 days.
3.What payment methods are accepted for SR302HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR302HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR302HR0G?
SR302HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR302HR0G 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 SR302HR0G?
For technical support, including SR302HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR302HR0G requirements.
6.How does Aetrix verify that SR302HR0G is sourced from the original manufacturer or authorized distributors?
All SR302HR0G 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 SR302HR0G meets industry standards.
7.What is the process for return or replacement of SR302HR0G?
All SR302HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR302HR0G, 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 SR302HR0G part is unused and in its original packaging.
Return procedure for SR302HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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