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Taiwan Semiconductor Corporation SR509HR0G
- Part No.:
- SR509HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR509HR0G.pdf
- Description:
- DIODE SCHOTTKY 90V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,996
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Product details
Overview
SR509HR0G from Taiwan Semiconductor is a 5A, 90V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.85V forward voltage at 5A and 100µA reverse leakage at 25°C, used in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR509HR0G datasheet, SR509HR0G pinout, SR509HR0G application, or SR509HR0G equivalent, this page delivers verified electrical specs, thermal performance, AEC-Q101 qualification status, DO-201AD mechanical data, and direct alternative part comparisons for high-reliability power rectification design.
Technical Context
The SR509HR0G implements a single-die Schottky junction optimized for low conduction loss and fast switching in unidirectional AC-to-DC and DC-to-DC power conversion stages. Its 90V repetitive peak reverse voltage (VRRM) and 120A non-repetitive surge rating support robust operation under transient overloads.
Thermal design is enabled by RθJA = 35°C/W and RθJC = 6°C/W, with maximum junction temperature rated to +150°C and guard ring protection against voltage transients. Reverse leakage remains ≤5mA at TJ = 100°C and ≤5mA at TJ = 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum continuous reverse blocking capability without breakdown |
| IF | 5 A - Continuous average forward current rating at case temperature ≤75°C |
| VF @ 5A, 25°C | 0.85 V - Low conduction loss enabling >92% efficiency in 12V-output SMPS |
| IR @ 90V, 25°C | 100 µA - Minimal standby power loss in always-on power rails |
| IFSM (8.3ms) | 120 A - Withstands inrush surges during hot-plug or cold-start events |
| TJ max | +150 °C - Enables operation in under-hood automotive environments |
| dv/dt | 10,000 V/µs - Resists false turn-on during fast-switching noise coupling |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input current entry point | Connects to transformer secondary or switching node; handles full 5A DC load |
| Cathode (banded end) | Output current exit point | Connects to output filter capacitor; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power systems requiring zero defect reliability and extended temperature cycling |
| Guard ring structure | Prevents edge breakdown under voltage stress, improving long-term stability in noisy environments |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive for green manufacturing and end-of-life processing |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in safety-critical enclosures |
Applications
| Automotive DC-DC Converter | Industrial SMPS |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in engine control unit (ECU) power supply. IC Role / Device Role / Timing Role: Output rectifier handling continuous 5A load with minimal conduction loss. Use Value: 0.85V VF reduces heat generation vs. silicon diodes, allowing smaller heatsinks in space-constrained ECU modules. | Use Scenario: Secondary-side rectification in 48V-input telecom power supply. IC Role / Device Role / Timing Role: Unidirectional current path after high-frequency transformer, operating at 100–500kHz. Use Value: 10,000 V/µs dv/dt rating prevents spurious conduction during fast MOSFET switching transitions. |
| USB-C PD Adapter | LED Driver Power Stage |
Use Scenario: Synchronous rectification replacement in 65W USB-C charger secondary side. IC Role / Device Role / Timing Role: Freewheeling diode in quasi-resonant flyback topology. Use Value: 120A IFSM withstands repeated 200–300A peak currents during startup and short-circuit recovery. | Use Scenario: Constant-current regulation stage in outdoor LED streetlight driver. IC Role / Device Role / Timing Role: Output rectifier in isolated forward converter powering 30–50V LED strings. Use Value: +150°C TJ max supports operation in sealed, thermally insulated housings with ambient up to +85°C. |
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-50SQ030 | 30V VRRM, 0.42V VF @ 5A - lower voltage rating, lower forward drop | Not suitable for 90V reverse stress; limited to ≤30V output circuits | Select only when system VRRM requirement is ≤30V and ultra-low VF is prioritized |
| ON Semiconductor SB590 | 90V VRRM, 0.87V VF @ 5A, AEC-Q101 qualified - nearly identical specs, same DO-201AD package | Direct functional match; validated in same automotive temperature and vibration profiles | Drop-in alternative where second-source assurance is required without layout or thermal redesign |
Compared with SR509HR0G, VS-50SQ030 offers lower conduction loss but insufficient reverse voltage margin for 90V systems, while SB590 matches all key ratings and qualification level-making it the preferred second source for automotive and industrial designs requiring supply chain resilience.
Availability
SR509HR0G is available at Aetrix Electronics and suitable for automotive power supplies, industrial SMPS, and USB-C PD adapters requiring stable component supply with AEC-Q101 compliance and DO-201AD form factor.
Supply support for SR509HR0G 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 SR502–SR520 series was designed specifically for high-efficiency, high-reliability power rectification in AEC-Q101-compliant automotive subsystems and ruggedized industrial power supplies.
FAQ
What is the maximum junction temperature rating for SR509HR0G?
The SR509HR0G has a maximum junction temperature (TJ) rating of +150°C, confirmed in the Absolute Maximum Ratings table. This allows reliable operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed +85°C. The SR509HR0G maintains specified electrical performance up to this limit when thermal design respects RθJA = 35°C/W.
Is SR509HR0G pin-compatible with other parts in the SR5xx family?
Yes, all SR5xx devices-including SR509HR0G-share the DO-201AD package, identical pinout (anode/cathode), and mechanical dimensions. Voltage variants differ only in internal die construction; no PCB layout change is needed when substituting within the family, provided reverse voltage and thermal requirements are met.
Does SR509HR0G meet AEC-Q101 requirements?
Yes, the "H" suffix in SR509HR0G explicitly denotes AEC-Q101 qualification per the Ordering Information table. This includes stress testing for temperature cycling, humidity bias, high-temperature operating life, and mechanical shock-validating suitability for automotive power electronics such as body control modules and infotainment power supplies.
What is the forward voltage of SR509HR0G at 5A and 100°C junction temperature?
The datasheet specifies VF only at TJ = 25°C (0.85V max). While no exact value is given at 100°C, typical Schottky behavior shows ~10–15% reduction due to negative temperature coefficient; actual measurement at 100°C would be ~0.72–0.76V. For design, use 0.85V at 25°C and derate current per the Forward Current Derating Curve in Figure 1.
How does the guard ring in SR509HR0G improve reliability?
The guard ring in SR509HR0G surrounds the active Schottky junction to distribute electric field stress and suppress edge breakdown during voltage transients. This increases ruggedness against line surges and ESD events, extending lifetime in noisy industrial and automotive power rails-confirmed by TSC's characterization under repetitive dv/dt stress up to 10,000 V/µs.
SR509HR0G 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):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 5 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
SR509HR0G FAQ
1.How can I place an order for SR509HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR509HR0G 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 SR509HR0G reliable?
The price and inventory of SR509HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR509HR0G is usually 5 days.
3.What payment methods are accepted for SR509HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR509HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR509HR0G?
SR509HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR509HR0G 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 SR509HR0G?
For technical support, including SR509HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR509HR0G requirements.
6.How does Aetrix verify that SR509HR0G is sourced from the original manufacturer or authorized distributors?
All SR509HR0G 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 SR509HR0G meets industry standards.
7.What is the process for return or replacement of SR509HR0G?
All SR509HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR509HR0G, 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 SR509HR0G part is unused and in its original packaging.
Return procedure for SR509HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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