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Taiwan Semiconductor Corporation SR003 R1G
- Part No.:
- SR003 R1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SR003 R1G.pdf
- Description:
- DIODE SCHOTTKY 30V 500MA DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,843
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Product details
Overview
SR003 R1G from Taiwan Semiconductor is a 0.5A, 30V repetitive peak reverse voltage Schottky barrier rectifier in DO-204AL (DO-41) package, featuring low forward voltage drop (0.55 V at 0.5 A, 25°C), 30 A surge capability, and AEC-Q101 qualification for automotive-grade reliability in DC/DC converters and power adapters.
For engineers reviewing the SR003 R1G datasheet, SR003 R1G pinout, SR003 R1G application, or SR003 R1G equivalent, this page delivers verified electrical specs, thermal performance, junction capacitance (110 pF), reverse leakage (500 µA at 25°C), and packaging details aligned with JESD201 Class 2 whisker testing and RoHS/halogen-free compliance.
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring overvoltage protection and pure tin-plated leads solderable per J-STD-002. Its 50 °C/W junction-to-ambient thermal resistance supports operation up to 150°C junction temperature under defined derating conditions.
The device exhibits 110 pF junction capacitance at 1 MHz and 4.0 V reverse bias, enabling high-frequency switching in SMPS designs. Reverse leakage remains ≤500 µA at 25°C and ≤10 mA at 100°C, ensuring stable blocking performance across automotive ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 24 V rail applications |
| IF | 0.5 A - Continuous forward current rating; sets maximum steady-state conduction capacity |
| VF @ 0.5A, 25°C | 0.55 V - Low conduction loss enabling >90% efficiency in low-voltage DC/DC stages |
| IFSM | 30 A - Non-repetitive surge current handling; withstands inrush during cold-start or transient events |
| TJ max | 150 °C - Extended junction temperature rating supporting under-hood automotive environments |
| CJ @ 1 MHz, 4 V | 110 pF - Junction capacitance limiting high-frequency switching losses and EMI generation |
| IR @ VR, 25°C | 500 µA - Low reverse leakage preserving standby power integrity in always-on circuits |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, cathode indicated by band. Weight: 0.330 g. Molding compound meets UL 94V-0; terminals pass JESD201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectification topology |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connects to positive output node; blocks reverse voltage up to 30 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including temperature cycling and HTRB |
| Guard ring structure | Enhances edge termination robustness against voltage transients and localized field crowding |
| Pure tin plating | Enables reliable solder wetting and eliminates lead-free compatibility concerns per J-STD-002 |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally constrained markets |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Adapter Secondary Side |
|---|---|
Use Scenario: Rectifying 12 V battery-derived supply in BCM sub-circuits with frequent load dumps and cold-crank transients. IC Role / Device Role / Timing Role: Schottky rectifier providing low-loss AC-to-DC conversion at secondary winding of isolated flyback converter. Use Value: 0.55 V VF minimizes heat rise in confined PCB areas; 30 A IFSM absorbs 12 V system load dump spikes without failure. | Use Scenario: Output rectification in compact 20–30 W USB PD adapters where size and efficiency are critical. IC Role / Device Role / Timing Role: Unidirectional current path on secondary side, replacing slower PN diodes to reduce conduction loss and improve light-load efficiency. Use Value: 110 pF CJ enables clean switching edge control; DO-41 package fits standard through-hole footprints without redesign. |
| Industrial IoT Sensor Node Power Supply | Point-of-Load DC/DC Converter in Telecom Shelf |
Use Scenario: Converting 5 V or 3.3 V rail outputs in battery-backed sensor nodes requiring ultra-low standby leakage. IC Role / Device Role / Timing Role: Reverse polarity and surge protection diode in input stage, plus freewheeling path in buck-derived regulators. Use Value: 500 µA IR at 25°C preserves battery life over multi-year deployments; 150°C TJ rating ensures reliability in unventilated enclosures. | Use Scenario: High-density telecom shelf with multiple distributed 12 V → 3.3 V/1.8 V point-of-load converters operating continuously at elevated ambient temperatures. IC Role / Device Role / Timing Role: Synchronous rectifier replacement in non-synchronous buck topologies where gate drive complexity is prohibitive. Use Value: 50 °C/W RθJA allows direct thermal coupling to copper pour; AEC-Q101 qualification adds margin for long-life field deployment. |
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-2EQH03-M3/54 | Same DO-41 package, 30 V VRRM, but VF = 0.52 V (typ) at 0.5 A; IR = 100 µA (max) at 25°C | Lower leakage suits ultra-low-power IoT; tighter VF tolerance benefits precision efficiency modeling | Select when <100 µA IR is mandatory and 0.03 V VF reduction justifies sourcing change |
| ON Semiconductor SB0530 | DO-41, 30 V VRRM, VF = 0.54 V (max) at 0.5 A; TJ max = 125°C only; no AEC-Q101 listing | Limited to commercial/industrial use; unsuitable for automotive under-hood placement | Choose for cost-sensitive non-automotive designs where 125°C junction limit suffices |
Compared with VS-2EQH03-M3/54 and SB0530, SR003 R1G uniquely combines AEC-Q101 qualification, 150°C junction rating, and 500 µA IR - making it the only option qualified for extended-temperature automotive power rails without derating.
Availability
SR003 R1G is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power adapters, and industrial IoT sensor node power supplies requiring stable component supply, long-lifecycle assurance, and traceable green-material compliance.
Supply support for SR003 R1G 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SR002–SR010 series was designed specifically for high-reliability, low-loss rectification in space-constrained power conversion systems where thermal robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum junction temperature rating for SR003 R1G?
The SR003 R1G has a maximum junction temperature (TJ max) of +150°C, validated per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood automotive environments and high-ambient industrial settings when used within its derated forward current envelope.
Is SR003 R1G pin-compatible with other devices in the SR002–SR010 family?
Yes, all SR002–SR010 devices share identical DO-204AL (DO-41) mechanical dimensions and axial anode/cathode pinout. SR003 R1G can be substituted for SR002 or SR004 in existing layouts, provided voltage and thermal requirements align with the 30 V VRRM rating.
Does SR003 R1G meet automotive qualification standards?
Yes, SR003 R1G is AEC-Q101 qualified - confirmed in the official Taiwan Semiconductor datasheet revision H2104. This includes qualification for temperature cycling, high-temperature reverse bias (HTRB), and accelerated moisture resistance testing required for automotive electronics.
What is the typical forward voltage drop of SR003 R1G at rated current?
The typical forward voltage drop (VF) of SR003 R1G is 0.55 V at IF = 0.5 A and TJ = 25°C, measured under pulsed conditions (PW = 0.3 ms). This value is confirmed in the Electrical Specifications table of the SR002–SR010 datasheet.
How is polarity marked on the SR003 R1G package?
Polarity on the SR003 R1G is indicated by a cathode band printed on the body of the DO-41 package. The banded end is the cathode terminal; the opposite lead is the anode - consistent with industry-standard axial diode marking conventions.
SR003 R1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 30 V
- Capacitance @ Vr, F:
- 110pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR003 R1G FAQ
1.How can I place an order for SR003 R1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR003 R1G 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 SR003 R1G reliable?
The price and inventory of SR003 R1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR003 R1G is usually 5 days.
3.What payment methods are accepted for SR003 R1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR003 R1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR003 R1G?
SR003 R1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR003 R1G 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 SR003 R1G?
For technical support, including SR003 R1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR003 R1G requirements.
6.How does Aetrix verify that SR003 R1G is sourced from the original manufacturer or authorized distributors?
All SR003 R1G 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 SR003 R1G meets industry standards.
7.What is the process for return or replacement of SR003 R1G?
All SR003 R1G units undergo pre-shipment inspection (PSI). If there is an issue with SR003 R1G, 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 SR003 R1G part is unused and in its original packaging.
Return procedure for SR003 R1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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