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Taiwan Semiconductor Corporation SR203HR0G
- Part No.:
- SR203HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SR203HR0G.pdf
- Description:
- DIODE SCHOTTKY 30V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,069
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Product details
Overview
SR203HR0G from Taiwan Semiconductor is a 2 A, 30 V AEC-Q101-qualified Schottky barrier rectifier in DO-204AC (DO-15) package, featuring 0.55 V forward voltage at 2 A and 25 °C, 50 A surge current capability, and guard ring overvoltage protection - used in automotive-grade DC/DC converters and industrial adapters.
For engineers reviewing the SR203HR0G datasheet, SR203HR0G pinout, SR203HR0G application, or SR203HR0G equivalent, key selection criteria include its AEC-Q101 qualification, low VF for thermal efficiency, DO-15 mechanical compatibility, TJ max of +150 °C, and cathode-band polarity marking.
Technical Context
This Schottky rectifier employs a single-die construction with guard ring structure to enhance transient overvoltage robustness. Its 10,000 V/µs critical dv/dt rating supports fast-switching topologies without parasitic turn-on.
Thermal design is enabled by RθJL = 21.7 °C/W and RθJC = 14.0 °C/W, allowing reliable operation up to 150 °C junction temperature under sustained 2 A DC load in convection-cooled layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - maximum repetitive reverse blocking voltage; defines safe operating range in 24 V system rails |
| IF | 2 A - continuous forward current rating; determines minimum trace width and heatsinking in PCB layout |
| VF | 0.55 V @ 2 A, 25 °C - low conduction loss enables >92% efficiency in 12–24 V DC/DC stages |
| IFSM | 50 A - non-repetitive surge rating; withstands inrush and fault currents in power-up sequences |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive environments |
| RθJL | 21.7 °C/W - junction-to-lead thermal resistance; enables direct lead soldering as primary heat path |
| dv/dt | 10,000 V/µs - high critical rate of rise tolerance prevents false triggering in high-dV/dt SMPS nodes |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with UL 94V-0 flammability rating and pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to lower-potential side (e.g., ground or return path) in rectification configuration |
| Cathode | Forward current exit node | Marked with band; connects to output rail or switching node; carries full load current and reverse recovery charge |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics per stress test requirements |
| Guard ring structure | Prevents edge breakdown during voltage transients, improving reliability in noisy 12 V/24 V systems |
| Low forward voltage (0.55 V) | Reduces conduction loss by ~35% vs. comparable Si diodes, lowering thermal footprint in space-constrained adapters |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS-compliant manufacturing and end-of-life recycling |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-vibration environments such as automotive chassis mounting |
Applications
| Automotive DC/DC Converters | Industrial AC/DC Adapters |
|---|---|
Use Scenario: Step-down conversion from 24 V battery to 5 V/3.3 V logic rails in ADAS camera modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck converter topology. Use Value: 0.55 V VF minimizes power loss at 2 A load, reducing thermal stress on compact heatsinks near image sensors. | Use Scenario: Secondary-side rectification in universal-input 100–240 VAC offline adapters for factory automation controllers. IC Role / Device Role / Timing Role: Freewheeling diode in flyback or forward converter output stage. Use Value: 50 A IFSM safely absorbs transformer leakage energy spikes during MOSFET turn-off transitions. |
| Telecom Power Supplies | LED Driver Secondary Rectification |
Use Scenario: 48 V intermediate bus conversion to 12 V for base station RF amplifiers. IC Role / Device Role / Timing Role: High-efficiency output rectifier in half-bridge LLC resonant converter. Use Value: +150 °C TJ max allows operation in sealed enclosures with ambient temperatures up to 85 °C. | Use Scenario: Constant-current LED string supply with isolated flyback topology for street lighting. IC Role / Device Role / Timing Role: Output rectifier delivering regulated DC to LED load. Use Value: Guard ring structure prevents premature failure due to line surges common in outdoor grid-connected installations. |
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-2EY30 | Same DO-15 package, 30 V VRRM, but VF = 0.62 V @ 2 A; no AEC-Q101 qualification | Not suitable for automotive under-hood use; acceptable for commercial-grade adapters | Select when AEC-Q101 is not required and cost sensitivity outweighs 70 mV VF penalty |
| ON Semiconductor SB230 | DO-15, 30 V, VF = 0.54 V @ 2 A; AEC-Q101 qualified; IFSM = 40 A (lower than SR203HR0G's 50 A) | Limited surge margin in high-inrush applications like motor-driven adapters | Prefer where ultra-low VF dominates and surge events are infrequent or clamped externally |
Compared with VS-2EY30 and SB230, SR203HR0G uniquely combines AEC-Q101 qualification, 50 A surge rating, and 0.55 V VF in DO-15 - making it optimal for automotive and industrial designs requiring both reliability and thermal efficiency.
Availability
SR203HR0G is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial AC/DC adapters, and telecom power supplies requiring stable component supply with AEC-Q101 compliance and long-lifecycle support.
Supply support for SR203HR0G 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 automotive, industrial, and consumer markets since 1979.
The SR202–SR220 series was designed specifically for high-reliability, medium-current Schottky rectification in space-constrained and thermally demanding applications - emphasizing AEC-Q101 compliance, low VF, and robust surge handling.
FAQ
What is the peak repetitive reverse voltage rating for SR203HR0G?
The SR203HR0G has a peak repetitive reverse voltage (VRRM) rating of 30 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version L2105), and defines the maximum DC or sinusoidal reverse voltage the device can block continuously without breakdown.
Is SR203HR0G qualified for automotive applications?
Yes, SR203HR0G is AEC-Q101 qualified. The "H" suffix in the ordering code explicitly denotes AEC-Q101 qualification, verified per the manufacturer's documentation and supported by stress testing across temperature, humidity, and mechanical vibration profiles required for automotive electronics.
What does the "R0G" suffix mean in SR203HR0G?
The "R0G" suffix in SR203HR0G indicates green compound (halogen-free) molding material per IEC 61249-2-21, and a date code format consistent with Taiwan Semiconductor's internal tracking. It does not affect electrical specifications but confirms environmental compliance and manufacturing traceability.
What is the forward voltage of SR203HR0G at 2 A and 100 °C?
The forward voltage of SR203HR0G is not specified at 100 °C in the provided datasheet. The datasheet lists VF = 0.55 V only at 2 A and 25 °C. At elevated temperatures, VF decreases - typical Schottky behavior - but no typ/max value is published for 100 °C operation.
Can SR203HR0G replace SR202HR0G in a design?
No, SR203HR0G is not a drop-in replacement for SR202HR0G. While both share DO-15 packaging and AEC-Q101 qualification, SR202HR0G is rated for 20 V VRRM, whereas SR203HR0G is rated for 30 V. Substituting without verifying reverse voltage margin may risk premature failure in circuits operating near 20 V reverse bias.
SR203HR0G 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):
- 30 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 @ 30 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
SR203HR0G FAQ
1.How can I place an order for SR203HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR203HR0G 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 SR203HR0G reliable?
The price and inventory of SR203HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR203HR0G is usually 5 days.
3.What payment methods are accepted for SR203HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR203HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR203HR0G?
SR203HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR203HR0G 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 SR203HR0G?
For technical support, including SR203HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR203HR0G requirements.
6.How does Aetrix verify that SR203HR0G is sourced from the original manufacturer or authorized distributors?
All SR203HR0G 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 SR203HR0G meets industry standards.
7.What is the process for return or replacement of SR203HR0G?
All SR203HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR203HR0G, 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 SR203HR0G part is unused and in its original packaging.
Return procedure for SR203HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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