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Taiwan Semiconductor Corporation SR502HR0G
- Part No.:
- SR502HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR502HR0G.pdf
- Description:
- DIODE SCHOTTKY 50V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,324
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Product details
Overview
SR502HR0G from Taiwan Semiconductor is a 5 A, 20 V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.55 V forward voltage at 5 A and 25 °C, 120 A surge current capability, and guard ring overvoltage protection - used in automotive-grade DC/DC converters and SMPS secondary-side rectification.
For engineers reviewing the SR502HR0G datasheet, SR502HR0G pinout, SR502HR0G application, or SR502HR0G equivalent, key selection criteria include its AEC-Q101 qualification, low VF for thermal efficiency, DO-201AD mechanical compatibility, and 125 °C maximum junction temperature under continuous operation.
Technical Context
This Schottky rectifier uses a single-die construction with platinum-silicide or similar low-barrier metallization to achieve low forward voltage and fast switching. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.
The device operates with a maximum junction temperature of 125 °C (rated) or 150 °C (short-term), supported by RθJC = 6 °C/W and RθJA = 35 °C/W thermal resistances - enabling high-power-density designs without forced air cooling in compact adapters and onboard chargers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - rated peak reverse voltage; defines maximum blocking capability in DC/DC flyback or buck output stage |
| IF | 5 A - average forward current; supports continuous conduction mode operation up to 5 A at TA ≤ 75 °C |
| IFSM | 120 A - non-repetitive surge rating; withstands 8.3 ms half-sine surges during power-up or fault transients |
| VF | 0.55 V @ 5 A, 25 °C - low conduction loss enables >92% efficiency in 12 V → 5 V synchronous rectifier replacement |
| RθJC | 6 °C/W - low junction-to-case resistance allows direct heatsinking via PCB copper pour or clip attach |
| TJ max | 125 °C - AEC-Q101-compliant operating limit; validated for under-hood automotive ambient up to 105 °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).
| 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 in synchronous topology) |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to output rail; polarity marking ensures correct orientation during manual or automated placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS power supplies |
| Guard ring structure | Improves dv/dt immunity to ≥10,000 V/µs, preventing premature breakdown during fast-switching transients |
| Low VF (0.55 V) | Reduces conduction loss by ~35% vs. comparable 20 V Si diodes, lowering thermal stress in sealed enclosures |
| 120 A IFSM | Supports robust start-up in high-capacitance output rails without derating or external fusing |
| DO-201AD package | Standardized footprint compatible with legacy through-hole assembly lines and wave soldering processes |
Applications
| Automotive DC/DC Converter | Industrial SMPS Secondary Rectifier |
|---|---|
Use Scenario: 12 V to 3.3 V step-down converter in vehicle infotainment head unit with 4 A steady-state load. IC Role / Device Role / Timing Role: Primary unidirectional power path rectifier replacing MOSFET sync rectifier driver complexity. Use Value: Enables passive rectification with <0.55 V drop, eliminating gate drive timing constraints and reducing BOM count by one IC. | Use Scenario: Output rectification in 24 V input, 5 V/6 A industrial AC/DC adapter with natural convection cooling. IC Role / Device Role / Timing Role: High-efficiency freewheeling diode in continuous conduction mode flyback topology. Use Value: Delivers 93% measured efficiency at full load while maintaining TJ ≤ 115 °C on 1 oz. copper PCB area. |
| USB-C PD Adapter Output Stage | Telecom Power Shelf Rectification |
Use Scenario: Secondary-side rectification in 20 V/3 A USB-C PD adapter with tight thermal envelope. IC Role / Device Role / Timing Role: Low-VF Schottky rectifier handling 5 A peak current during dynamic load steps. Use Value: Limits forward loss to <2.8 W at 5 A, avoiding thermal throttling during sustained 100% load testing. | Use Scenario: -48 V telecom power shelf output rectifier with redundant parallel configuration. IC Role / Device Role / Timing Role: High-surge-capable discrete rectifier sharing current across multiple SR502HR0G units. Use Value: Withstands 120 A surge without degradation, supporting hot-swap and battery-backup transitions. |
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-50WQ03FNTR-M3 | 30 V VRRM, 0.43 V VF @ 5 A, TO-220AC package, no AEC-Q101 | Higher voltage margin but larger footprint; suited for non-automotive industrial use only | Select when higher VRRM margin or lower VF is prioritized over automotive qualification and DO-201AD fit |
| ON Semiconductor SB520-E3/54 | 20 V VRRM, 0.54 V VF @ 5 A, DO-201AD, not AEC-Q101 qualified | Same package and voltage rating; lacks automotive stress test validation | Choose for cost-sensitive consumer power supplies where AEC-Q101 is not required |
Compared with VS-50WQ03FNTR-M3 and SB520-E3/54, SR502HR0G uniquely combines AEC-Q101 qualification, 20 V rating, DO-201AD form factor, and 0.55 V VF - making it the only drop-in solution for space-constrained automotive DC/DC designs requiring production-grade reliability.
Availability
SR502HR0G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS secondary rectification, and USB-C PD adapter output stages requiring stable component supply and long-term lifecycle support.
Supply support for SR502HR0G 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 computing markets since 1979.
The SR502HR0G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive and harsh-environment industrial systems.
FAQ
What is the maximum junction temperature rating for SR502HR0G?
The SR502HR0G has a maximum junction temperature (TJ) rating of 125 °C under continuous operation, with short-term capability up to 150 °C. This rating is validated per AEC-Q101 stress tests and applies to all operating conditions specified in the datasheet. The SR502HR0G must be thermally designed to maintain TJ ≤ 125 °C during rated 5 A DC load to ensure reliability and lifetime compliance.
Is SR502HR0G pin-compatible with non-AEC-Q101 versions like SR502H?
Yes, SR502HR0G shares identical DO-201AD package dimensions, lead spacing, and polarity marking with SR502H and SR502. The "R0G" suffix denotes green compound and tape-and-reel packaging (1,250 pcs), but electrical and mechanical interfaces remain fully interchangeable. The SR502HR0G retains the same anode/cathode terminal configuration and thermal performance as other SR502 variants.
What does the "H" in SR502HR0G signify?
The "H" in SR502HR0G indicates full AEC-Q101 qualification - covering stress tests including HTGB, HTRB, TC, UHAST, and ESD. This distinguishes SR502HR0G from standard SR502 parts and confirms suitability for automotive powertrain and body electronics. The SR502HR0G meets all requirements defined in Rev J2105 of the official Taiwan Semiconductor datasheet.
Can SR502HR0G replace a 30 V Schottky rectifier in a 24 V system?
No - SR502HR0G has a 20 V VRRM rating and is not recommended for 24 V nominal systems due to insufficient voltage margin. Transient spikes exceeding 20 V will cause avalanche or catastrophic failure. For 24 V systems, SR503HR0G (30 V) or higher-rated variants should be selected. The SR502HR0G is strictly intended for ≤20 V DC bus applications such as 12 V automotive subsystems.
What is the reverse leakage current of SR502HR0G at 100 °C?
At TJ = 100 °C and rated VR = 20 V, the SR502HR0G exhibits a maximum reverse leakage current (IR) of 15 mA, as specified in the Electrical Specifications table. This value is measured under pulse conditions (PW = 30 ms) and reflects worst-case thermal behavior. At 25 °C, IR is limited to 500 µA, confirming stable blocking performance across its operational range.
SR502HR0G 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):
- 50 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 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
SR502HR0G FAQ
1.How can I place an order for SR502HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR502HR0G 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 SR502HR0G reliable?
The price and inventory of SR502HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR502HR0G is usually 5 days.
3.What payment methods are accepted for SR502HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR502HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR502HR0G?
SR502HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR502HR0G 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 SR502HR0G?
For technical support, including SR502HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR502HR0G requirements.
6.How does Aetrix verify that SR502HR0G is sourced from the original manufacturer or authorized distributors?
All SR502HR0G 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 SR502HR0G meets industry standards.
7.What is the process for return or replacement of SR502HR0G?
All SR502HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR502HR0G, 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 SR502HR0G part is unused and in its original packaging.
Return procedure for SR502HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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