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Taiwan Semiconductor Corporation SR202HR0G
- Part No.:
- SR202HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SR202HR0G.pdf
- Description:
- DIODE SCHOTTKY 20V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,862
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Product details
Overview
SR202HR0G from Taiwan Semiconductor is a 2 A, 20 V Schottky barrier rectifier in DO-204AC (DO-15) package, featuring low forward voltage drop (max 0.55 V at 2 A, 25°C), 50 A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency output rectifier in compact DC/DC converters and AC/DC adapters.
For engineers reviewing the SR202HR0G datasheet, SR202HR0G pinout, SR202HR0G application, or SR202HR0G equivalent, key selection criteria include its 20 V VRRM rating, 125°C max junction temperature, AEC-Q101 qualification status, thermal resistance (RθJL = 21.7°C/W), and DO-15 mechanical compatibility with legacy through-hole power designs.
Technical Context
This single-die Schottky rectifier uses a guard ring structure to enhance overvoltage robustness and supports high-frequency switching with low reverse recovery charge. Its 10,000 V/µs dv/dt rating enables stable operation in fast-switching SMPS topologies without snubbers.
The device operates across –55°C to +125°C junction range (derated above 125°C per curve Fig.1), with RθJA = 75.0°C/W enabling 2 A continuous conduction in standard PCB layouts without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; defines minimum input/output isolation margin in 12 V rail applications. |
| IF | 2 A - Continuous average forward current; supports up to 24 W output at 12 V with typical efficiency >92% in buck converters. |
| VF (max) | 0.55 V @ 2 A, 25°C - Low conduction loss reduces thermal stress and improves system efficiency vs. silicon diodes. |
| IFSM | 50 A - Non-repetitive surge rating; withstands inrush currents during cold-start of 12 V adapter outputs. |
| TJ max | 125°C - Maximum operating junction temperature; requires thermal design margin below this limit under full load. |
| RθJL | 21.7°C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper pour or heatsink via lead frame. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case 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) | Forward current entry point | Connected to switch node or transformer secondary center-tap; must handle full 2 A RMS current and 50 A surge peaks. |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output filter capacitor; polarity marking ensures correct orientation to prevent catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring zero defect rates and extended temperature cycling reliability. |
| Guard ring structure | Prevents premature edge breakdown under transient overvoltage, improving long-term stability in unregulated input rails. |
| Low VF and high IFSM | Enables compact thermal design: 0.55 V drop at 2 A yields only 1.1 W conduction loss, reducing heatsink need. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for consumer electronics and automotive cabin modules with strict material restrictions. |
Applications
| Automotive DC/DC Converter | USB-C PD Adapter Output Stage |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V buck converter in infotainment head unit power supply. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFET driver + FET; provides fixed-polarity, low-loss conduction path. Use Value: Reduces BOM count and layout area vs. active rectification while maintaining >91% efficiency at 2 A load. | Use Scenario: Secondary-side rectification in 65 W USB-C PD wall adapter with 20 V input. IC Role / Device Role / Timing Role: Uncontrolled rectifier in flyback output stage; handles 2 A average current with minimal thermal rise. Use Value: Enables DO-15 footprint reuse from legacy designs while meeting AEC-Q101 requirements for industrial-grade adapters. |
| Industrial PLC Power Module | LED Driver Auxiliary Supply |
Use Scenario: 24 V auxiliary rail generation in programmable logic controller with wide ambient temperature range. IC Role / Device Role / Timing Role: Input rectifier for isolated DC/DC module powering microcontroller and I/O drivers. Use Value: Stable operation from –40°C to +85°C ambient due to 125°C TJ max and low IR drift up to 100°C. | Use Scenario: Bias supply rectification in constant-current LED driver for street lighting. IC Role / Device Role / Timing Role: Low-noise, low-VF rectifier feeding linear regulator for analog control circuitry. Use Value: Minimizes voltage drop across rectifier to preserve headroom for precision current sensing and dimming control. |
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-2EY20-M3/54 | Same DO-15 package, 2 A/20 V rating, but not AEC-Q101 qualified; VF = 0.52 V (typ) at 2 A. | Lacks automotive qualification; suitable for commercial-grade adapters and industrial controls without automotive compliance needs. | Select when AEC-Q101 is not required and slightly lower VF is prioritized over qualification documentation. |
| ON Semiconductor SB220-E3/54 | DO-15, 2 A/20 V, AEC-Q101 qualified; VF = 0.54 V (max) at 2 A, but TJ max = 125°C same as SR202HR0G. | Identical qualification and thermal specs; differs in marking format and tape/reel packaging (3,000 pcs vs. 3,500 pcs). | Preferred for second-source procurement where identical automotive qualification and performance are mandatory. |
Compared with VS-2EY20-M3/54 and SB220-E3/54, SR202HR0G offers verified AEC-Q101 compliance with documented guard ring protection and tighter thermal resistance (RθJL = 21.7°C/W), making it optimal for space-constrained automotive modules requiring long-term reliability under thermal cycling.
Availability
SR202HR0G is available at Aetrix Electronics and suitable for automotive DC/DC converters, USB-C PD adapters, and industrial PLC power modules requiring stable component supply with full traceability and long-lifecycle support.
Supply support for SR202HR0G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and automotive qualification capabilities.
The SR202HR0G belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-reliability automotive and industrial power conversion where low VF, surge robustness, and thermal stability are critical.
FAQ
What is the maximum junction temperature rating for SR202HR0G?
The SR202HR0G has a maximum junction temperature (TJ) of +125°C, as specified in the Absolute Maximum Ratings table. Operation beyond this limit risks irreversible degradation. Derating curves (Fig.1) show allowable forward current reduction above 125°C ambient, and thermal design must ensure SR202HR0G stays within this bound under worst-case load and ambient conditions.
Is SR202HR0G pin-compatible with non-AEC-Q101 versions like SR202G?
Yes, SR202HR0G shares identical DO-204AC (DO-15) package dimensions, anode/cathode pinout, and mechanical footprint with SR202G and other SR2xx variants. The "H" suffix denotes AEC-Q101 qualification only - no electrical or physical changes affect board layout or soldering process for SR202HR0G.
What does the "R0G" suffix mean in SR202HR0G?
The "R0G" suffix in SR202HR0G indicates green compound (halogen-free epoxy) per IEC 61249-2-21 and RoHS compliance. "R0" denotes reel packaging (3,500 pcs/tape), and "G" confirms halogen-free material - consistent with TSC's ordering code convention defined in the datasheet Version L2105.
Does SR202HR0G require a heatsink in typical 2 A applications?
SR202HR0G typically does not require an external heatsink at 2 A continuous load on standard FR-4 PCBs with ≥1 in² copper pour per lead. With RθJA = 75.0°C/W and 1.1 W conduction loss, junction temperature rise is ~83°C above ambient - well within the 125°C limit at ≤42°C ambient. Forced airflow or heatsinks become necessary only above 60°C ambient or sustained >2.5 A loads.
How is the cathode identified on SR202HR0G?
The cathode of SR202HR0G is marked by a distinct color band (typically white or black) on the body near one lead end. Per mechanical data, polarity is indicated by this cathode band, and the unmarked lead is the anode. Correct orientation is essential: reverse connection will cause immediate short-circuit failure under forward bias.
SR202HR0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 2 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-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR202HR0G FAQ
1.How can I place an order for SR202HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR202HR0G 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 SR202HR0G reliable?
The price and inventory of SR202HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR202HR0G is usually 5 days.
3.What payment methods are accepted for SR202HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR202HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR202HR0G?
SR202HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR202HR0G 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 SR202HR0G?
For technical support, including SR202HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR202HR0G requirements.
6.How does Aetrix verify that SR202HR0G is sourced from the original manufacturer or authorized distributors?
All SR202HR0G 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 SR202HR0G meets industry standards.
7.What is the process for return or replacement of SR202HR0G?
All SR202HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR202HR0G, 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 SR202HR0G part is unused and in its original packaging.
Return procedure for SR202HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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