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Taiwan Semiconductor Corporation SR205 R0G
- Part No.:
- SR205 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SR205 R0G.pdf
- Description:
- DIODE SCHOTTKY 50V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,755
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Product details
Overview
SR205 R0G from Taiwan Semiconductor is a 2 A, 50 V Schottky barrier rectifier in DO-204AC (DO-15) package, featuring low forward voltage drop (VF ≤ 0.70 V at 2 A, 25°C), high surge current capability (IFSM = 50 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in compact DC/DC converters and AC/DC adapters where efficiency and thermal robustness are critical.
For engineers reviewing the SR205 R0G datasheet, SR205 R0G pinout, SR205 R0G application, or SR205 R0G equivalent, key selection factors include its 50 V repetitive peak reverse voltage (VRRM), 2 A average forward current rating, 5 mA reverse leakage at 100°C, 21.7°C/W junction-to-lead thermal resistance, and AEC-Q101 qualification availability in variant codes.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring structure for enhanced overvoltage ruggedness and operates with minimal conduction loss due to its low VF and fast switching behavior. Its 10,000 V/µs critical rate of rise of off-state voltage supports reliable operation in high-frequency SMPS topologies.
The device is rated for continuous operation from –55°C to +150°C junction temperature, with thermal performance defined by RθJL = 21.7°C/W and RθJA = 75.0°C/W under standard PCB mounting conditions. Lead finish is pure tin, compliant with J-STD-002 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF(AV) | 2 A - Continuous average forward current at TA = 75°C on FR-4 PCB with 1-inch² copper pad |
| VF | ≤ 0.70 V @ 2 A, 25°C - Low conduction loss enabling >92% efficiency in 12 V output DC/DC stages |
| IFSM | 50 A - Peak non-repetitive surge current handling for line transient and startup stress |
| IR | ≤ 500 µA @ 50 V, 25°C; ≤ 5 mA @ 50 V, 100°C - Leakage-controlled for standby power compliance |
| TJ max | +150°C - Enables operation in sealed enclosures or high-ambient industrial environments |
| RθJL | 21.7°C/W - Predictable junction temperature rise under 2 A DC load with proper lead heatsinking |
Pinout & Package
DO-204AC (DO-15) molded plastic package with axial leads; cathode indicated by band. Weight ≈ 0.400 g. UL 94V-0 rated molding compound. Pure tin-plated leads, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output filter capacitor positive rail; must withstand full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Improves dv/dt immunity and prevents edge breakdown under repetitive overvoltage transients |
| Low VF (≤ 0.70 V) | Reduces conduction loss by ~35% vs. comparable 50 V Si PN rectifiers at 2 A |
| High IFSM (50 A) | Withstands 8.3 ms half-sine surges common in universal-input AC/DC front-ends |
| Junction temp rating (–55°C to +150°C) | Supports operation in automotive under-hood or industrial motor drive auxiliary supplies |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for consumer and medical-grade power supplies |
Applications
| Server PSU Secondary Rectification | USB-C PD Adapter Output Stage |
|---|---|
Use Scenario: 12 V/24 V isolated DC/DC converter output rectification in 1U server PSUs with tight thermal constraints. IC Role / Device Role / Timing Role: Primary unidirectional power conversion element; replaces PN diodes to reduce heat sink size. Use Value: 0.70 V VF enables ≥0.5 W lower dissipation per rectifier vs. legacy 50 V Si diodes at 2 A, easing thermal design. | Use Scenario: 20 V output stage in compact 65 W USB-C PD wall adapters operating at 100–200 kHz. IC Role / Device Role / Timing Role: High-efficiency synchronous rectifier alternative where gate drive complexity is avoided. Use Value: Fast recovery and low IR minimize no-load losses and improve 10%–20% load efficiency per DOE Level VI requirements. |
| Industrial PLC Power Module | Automotive Body Control Module Supply |
Use Scenario: 5 V/3.3 V auxiliary supply rectification in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Input-stage rectifier feeding LDO or buck converter; exposed to wide ambient (–40°C to +70°C). Use Value: +150°C TJ rating ensures reliability under sustained 70°C ambient + self-heating; 50 A IFSM handles inrush into bulk capacitance. | Use Scenario: 12 V input conditioning for body control modules in passenger vehicles with battery transients. IC Role / Device Role / Timing Role: Reverse polarity and load dump protection front-end rectifier in non-isolated DC/DC pre-regulators. Use Value: Guard ring and 10,000 V/µs dv/dt rating prevent failure during ISO 7637-2 pulse 5a/b events. |
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-2EY50 | Same DO-15 package, 2 A/50 V rating; VF = 0.72 V @ 2 A, 25°C; TJ max = +150°C | Identical thermal and electrical envelope; slightly higher VF increases conduction loss by ~30 mW at 2 A | Preferred where Vishay supply chain alignment or dual-sourcing is required |
| ON Semiconductor SB250 | DO-15, 2 A/50 V; VF = 0.75 V @ 2 A, 25°C; IR = 1.0 mA @ 50 V, 125°C | Higher leakage at elevated temperature; less suitable for high-ambient industrial use | Acceptable for commercial-grade adapters with < 60°C ambient and active cooling |
Compared with VS-2EY50 and SB250, SR205 R0G offers the lowest VF (≤ 0.70 V) and tightest IR specification (≤ 500 µA @ 25°C), making it optimal for high-efficiency, thermally constrained designs where conduction loss and standby power are critical.
Availability
SR205 R0G is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C PD adapters, and industrial PLC power modules requiring stable component supply and long-term manufacturability.
Supply support for SR205 R0G 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 power and signal conditioning markets since 1979.
The SR202–SR220 series was developed specifically for high-efficiency, cost-sensitive rectification in consumer, industrial, and automotive auxiliary power supplies-emphasizing low VF, rugged surge handling, and extended temperature operation.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for SR205 R0G?
The SR205 R0G has a VRRM rating of 50 V, meaning it reliably blocks up to 50 V of reverse voltage in repetitive operation without breakdown. This value is confirmed in the Absolute Maximum Ratings table of the official TSC datasheet (Version L2105), and applies across the full operating temperature range from –55°C to +150°C junction temperature.
Is SR205 R0G AEC-Q101 qualified?
The base SR205 R0G part is not AEC-Q101 qualified; however, the AEC-Q101 variant is designated as SR205H or SR205HA0G per TSC's Ordering Information table. The "H" suffix explicitly indicates qualification to AEC-Q101 stress test standards for automotive discrete semiconductors. SR205 R0G itself meets all electrical and thermal specs but lacks the extended reliability validation.
What is the forward voltage (VF) of SR205 R0G at 2 A and 100°C junction temperature?
The datasheet specifies VF ≤ 0.70 V at IF = 2 A and TJ = 25°C. While no exact VF value is given at 100°C, the typical VF increase is ~2.2 mV/°C for Schottky devices; thus, VF at 100°C is estimated at ≤ 0.86 V. This remains significantly lower than silicon PN rectifiers, preserving efficiency in thermally demanding applications using SR205 R0G.
Does SR205 R0G have a specified junction-to-case thermal resistance (RθJC)?
Yes, SR205 R0G has a specified RθJC of 14.0°C/W, measured from junction to case (defined at the lead-to-package interface). This parameter is critical for estimating temperature rise when the device is mounted to a heatsink or metal-core PCB. It complements RθJL = 21.7°C/W and RθJA = 75.0°C/W for comprehensive thermal modeling of SR205 R0G in real layouts.
What marking code appears on the SR205 R0G device body?
The SR205 R0G is marked with "SR205" on the device body, followed by a green compound indicator "G", date code (e.g., "2422" for week 22 of 2024), and factory code. This matches the Marking Diagram in TSC's SR202–SR220 datasheet (Version L2105) and confirms authenticity and voltage grade (50 V) at visual inspection-no additional suffixes like "H" appear on the R0G variant.
SR205 R0G 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):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR205 R0G FAQ
1.How can I place an order for SR205 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR205 R0G 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 SR205 R0G reliable?
The price and inventory of SR205 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR205 R0G is usually 5 days.
3.What payment methods are accepted for SR205 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR205 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR205 R0G?
SR205 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR205 R0G 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 SR205 R0G?
For technical support, including SR205 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR205 R0G requirements.
6.How does Aetrix verify that SR205 R0G is sourced from the original manufacturer or authorized distributors?
All SR205 R0G 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 SR205 R0G meets industry standards.
7.What is the process for return or replacement of SR205 R0G?
All SR205 R0G units undergo pre-shipment inspection (PSI). If there is an issue with SR205 R0G, 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 SR205 R0G part is unused and in its original packaging.
Return procedure for SR205 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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