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Taiwan Semiconductor Corporation SR003HR0G
- Part No.:
- SR003HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SR003HR0G.pdf
- Description:
- DIODE SCHOTTKY 30V 500MA DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,892
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Product details
Overview
SR003HR0G from Taiwan Semiconductor is a 0.5A, 30V AEC-Q101-qualified Schottky barrier rectifier in DO-204AL (DO-41) package, featuring 0.55V forward voltage at 0.5A/25°C, 30A surge capability, and 500µA reverse leakage at 25°C/30V - used in automotive-grade DC-DC converters and compact AC adapters.
For engineers reviewing the SR003HR0G datasheet, SR003HR0G pinout, SR003HR0G application, or SR003HR0G equivalent, key selection factors include its AEC-Q101 qualification, low VF for thermal efficiency, DO-41 mechanical compatibility, and 125°C max junction temperature for under-hood power conversion designs.
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring overvoltage protection and pure tin-plated leads compliant with J-STD-002 solderability. Its 110pF junction capacitance at 1MHz/4V enables stable high-frequency switching in SMPS flyback and buck topologies.
The device operates across -55°C to +125°C junction range (with optional +150°C rating), exhibits 50°C/W junction-to-ambient thermal resistance, and maintains ≤500µA IR up to 100°C - supporting reliable operation in thermally constrained automotive and industrial power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse blocking voltage; defines safe operating limit in 24V automotive systems |
| IF | 0.5 A - continuous forward current rating; supports compact 1–3W DC-DC output stages |
| IFSM | 30 A - non-repetitive surge current (8.3ms half-sine); withstands cold-start inrush in vehicle electronics |
| VF | 0.55 V @ 0.5A/25°C - low conduction loss enabling >92% efficiency in 5V/0.5A buck converters |
| IR | 500 µA @ 30V/25°C - minimal leakage preserves standby power in always-on modules |
| TJ max | 125 °C - rated junction temperature; allows placement near heat-generating controllers without derating |
| CJ | 110 pF @ 1MHz/4V - low capacitance minimizes switching noise and EMI in >100kHz SMPS |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, cathode indicated by band. Lead finish: pure tin, J-STD-002 compliant. Weight: 0.330g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in synchronous buck); requires thermal relief on PCB for 0.5A continuous |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; cathode band orientation must match silkscreen to prevent reverse bias failure |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| Guard ring structure | Prevents edge breakdown at 30V reverse bias, improving long-term reliability in transient-prone environments |
| Low VF (0.55V) | Reduces power dissipation to <275mW at 0.5A, eliminating need for heatsinking in space-constrained adapters |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
| Junction-to-ambient RθJA | 50°C/W enables 0.5A operation at 75°C ambient without forced air cooling |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Adapter Secondary Side |
|---|---|
Use Scenario: 12V input rectification in BCM power supply feeding microcontroller, CAN transceivers, and LED drivers. IC Role / Device Role / Timing Role: Schottky rectifier in isolated flyback secondary stage, replacing slower PN diodes to reduce losses. Use Value: 0.55V VF cuts conduction loss by ~40% vs. standard 1N400x, lowering thermal load in sealed housing. | Use Scenario: Output rectification in 5V/3A USB-C PD adapter with 100kHz+ switching frequency. IC Role / Device Role / Timing Role: High-efficiency unidirectional current path after transformer secondary winding. Use Value: 110pF CJ and fast recovery minimize switching noise, easing EMI filter design and passing CISPR-32 Class B. |
| Industrial IoT Sensor Node Power | LED Driver Auxiliary Supply |
Use Scenario: Input rectification for 3.3V LDO-fed sensor node powered from 5–24V DC field bus. IC Role / Device Role / Timing Role: Reverse polarity and surge protection element upstream of DC-DC converter. Use Value: 30A IFSM withstands 24V bus hot-plug transients; AEC-Q101 grade ensures 15-year field life. | Use Scenario: Bias supply rectification for constant-current LED driver IC requiring stable 12V auxiliary rail. IC Role / Device Role / Timing Role: Low-loss rectifier in auxiliary winding circuit powering gate driver and feedback optocoupler. Use Value: 500µA IR at 25°C prevents standby current drift, maintaining tight regulation during dimming cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB0330-TB | Same DO-41 package, 0.5A/30V, VF = 0.45V typ, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial adapters only | Select when cost sensitivity outweighs automotive reliability requirements |
| SS33HE3/57T | DO-214AC (SMA) package, 3A/30V, VF = 0.5V, AEC-Q101 qualified | Higher current rating and surface-mount format; requires PCB layout change | Choose for higher-power designs or automated SMT assembly where footprint permits |
Compared with SB0330-TB and SS33HE3/57T, SR003HR0G uniquely balances AEC-Q101 compliance, DO-41 through-hole compatibility, and optimized 0.5A/30V performance - making it the preferred choice for legacy-compatible, automotive-qualified low-power rectification.
Availability
SR003HR0G is available at Aetrix Electronics and suitable for automotive body electronics, compact USB-C adapters, and industrial sensor node power supplies requiring stable component supply with full traceability and long-lifecycle support.
Supply support for SR003HR0G 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 consumer markets since 1979.
The SR002–SR010 series was designed specifically for high-reliability, low-loss rectification in space- and thermal-constrained power conversion - emphasizing AEC-Q101 qualification, consistent VF matching, and robust surge handling for automotive and industrial DC-DC applications.
FAQ
What is the maximum junction temperature rating for SR003HR0G?
The SR003HR0G has a maximum junction temperature (TJ) rating of +125°C under standard conditions, with an extended option up to +150°C depending on manufacturing lot. This rating enables reliable operation in under-hood automotive environments and enclosed power adapters without active cooling when used within its 0.5A continuous current limit.
Is SR003HR0G compatible with lead-free reflow soldering processes?
Yes, SR003HR0G features pure tin-plated leads that meet J-STD-002 solderability requirements and are fully compatible with lead-free reflow profiles up to 260°C peak temperature. The DO-41 package's axial leads allow both wave and hand-soldering, and the molding compound complies with UL 94V-0 flammability standards.
Does SR003HR0G have AEC-Q101 qualification documentation available?
Yes, SR003HR0G carries full AEC-Q101 qualification per version H2104 of the official Taiwan Semiconductor datasheet. The "H" suffix in the part number explicitly denotes AEC-Q101 compliance, covering stress tests including HTGB, HTRB, TCT, and mechanical shock - validated for automotive power supply applications.
What is the reverse leakage current specification for SR003HR0G at elevated temperature?
At 100°C and rated 30V reverse voltage, SR003HR0G exhibits a maximum reverse leakage current (IR) of 10mA. This value is confirmed in the Electrical Specifications table of the official datasheet and reflects realistic worst-case behavior in high-temperature automotive environments.
How does the junction capacitance of SR003HR0G affect high-frequency SMPS design?
With a typical junction capacitance (CJ) of 110pF at 1MHz/4V, SR003HR0G introduces minimal displacement current during switching transitions. This low CJ reduces ringing and EMI generation in >100kHz flyback or forward converters, simplifying snubber design and aiding CISPR-32 compliance in compact power supplies.
SR003HR0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR003HR0G FAQ
1.How can I place an order for SR003HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR003HR0G 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 SR003HR0G reliable?
The price and inventory of SR003HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR003HR0G is usually 5 days.
3.What payment methods are accepted for SR003HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR003HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR003HR0G?
SR003HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR003HR0G 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 SR003HR0G?
For technical support, including SR003HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR003HR0G requirements.
6.How does Aetrix verify that SR003HR0G is sourced from the original manufacturer or authorized distributors?
All SR003HR0G 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 SR003HR0G meets industry standards.
7.What is the process for return or replacement of SR003HR0G?
All SR003HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR003HR0G, 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 SR003HR0G part is unused and in its original packaging.
Return procedure for SR003HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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