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Taiwan Semiconductor Corporation SR103HR0G
- Part No.:
- SR103HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SR103HR0G.pdf
- Description:
- DIODE SCHOTTKY 30V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,536
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Product details
Overview
SR103HR0G from Taiwan Semiconductor is a 1A, 30V AEC-Q101 qualified Schottky barrier rectifier in DO-204AL (DO-41) package, featuring 0.55V forward voltage at 1A/25°C, 30A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and industrial adapters.
For engineers reviewing the SR103HR0G datasheet, SR103HR0G pinout, SR103HR0G application, or SR103HR0G equivalent, key selection criteria include its AEC-Q101 qualification, 30V VRRM, 0.55V VF at rated current, 125°C max junction temperature, and DO-41 mechanical compatibility with legacy through-hole power rectifier layouts.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring termination to enhance ruggedness against transient overvoltage events. Its low VF and high IFSM support high-efficiency, compact SMPS designs where thermal management and conduction loss are critical.
The device operates across –55°C to +125°C junction range and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements-enabling use in automotive under-hood and industrial control environments demanding long-term reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC flyback or buck output stage |
| IF | 1 A - Continuous average forward current; determines heatsink-free operation up to ambient 75°C with derating |
| VF @ 1A, 25°C | 0.55 V - Low conduction loss enabling >92% efficiency in 5–12V output converters |
| IFSM | 30 A - Non-repetitive surge rating for handling inrush or fault currents without failure |
| TJ max | 125 °C - Junction temperature limit; supports operation in sealed enclosures with limited airflow |
| RθJA | 90 °C/W - Thermal resistance from junction to ambient; used to calculate temperature rise on PCB with no copper pour |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to output rail or filter capacitor positive; blocks reverse voltage up to 30V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics |
| Guard ring structure | Improves dv/dt immunity and prevents premature edge breakdown during voltage transients |
| Low 0.55V forward drop | Reduces power dissipation by ~0.55W at 1A versus silicon diodes, lowering thermal stress |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and global environmental compliance mandates for end-of-life processing |
Applications
| Automotive DC-DC Converters | Industrial Power Adapters |
|---|---|
Use Scenario: Step-down conversion from 12V battery to 3.3V/5V rails in telematics control units. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 0.55V VF minimizes conduction loss and enables stable regulation under load transients without thermal throttling. | Use Scenario: AC/DC adapter front-end for programmable logic controllers with 24V DC output. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in flyback converter. Use Value: 30A IFSM withstands repeated inrush surges during cold-start, extending adapter lifetime. |
| Telecom Base Station PSUs | Consumer USB-C PD Chargers |
Use Scenario: Intermediate bus rectification in distributed power architecture with 48V input. IC Role / Device Role / Timing Role: OR-ing diode in redundant 48V-to-12V intermediate bus converter. Use Value: Guard ring design ensures reliable blocking during hot-swap events and reverse polarity faults. | Use Scenario: Secondary-side rectifier in compact 30W USB-C PD charger using quasi-resonant flyback. IC Role / Device Role / Timing Role: High-frequency output rectifier operating at 65–100kHz switching frequency. Use Value: Low junction capacitance (<100pF at 4V) reduces switching loss and EMI generation. |
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-1EQH03-M3/5AT | Same DO-41 package, 30V VRRM, but 0.52V VF at 1A and 150°C TJ max | Higher temp rating supports hotter environments; slightly lower VF improves efficiency marginally | Prefer when operating above 125°C ambient or requiring extended thermal headroom |
| ON Semiconductor SB130 | DO-41, 30V VRRM, 0.85V VF at 1A, non-AEC-Q101 | Lacks automotive qualification; higher VF increases conduction loss by ~0.3W at full load | Select only for cost-sensitive industrial or consumer applications without AEC-Q101 requirement |
Compared with VS-1EQH03-M3/5AT and SB130, SR103HR0G uniquely combines AEC-Q101 qualification, 0.55V VF, and 125°C TJ max in a standard DO-41 footprint-making it optimal for automotive-qualified 1A rectification where reliability and thermal balance are prioritized over marginal VF reduction.
Availability
SR103HR0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial power adapters, and telecom base station PSUs requiring stable component supply, long-lifecycle assurance, and AEC-Q101 compliance.
Supply support for SR103HR0G 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, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.
The SR102–SR115 series was designed specifically to deliver AEC-Q101 qualified Schottky rectifiers with optimized VF/IR trade-offs and robust thermal performance for next-generation automotive power systems and high-reliability industrial supplies.
FAQ
What is the peak repetitive reverse voltage rating of SR103HR0G?
The SR103HR0G has a peak repetitive reverse voltage (VRRM) rating of 30 V. This value is specified in the Absolute Maximum Ratings table and defines the maximum reverse-biased voltage the device can block continuously without breakdown. It is validated under standard test conditions per JEDEC standards and applies across the full operating temperature range.
Is SR103HR0G qualified for automotive applications?
Yes, SR103HR0G is AEC-Q101 qualified, as confirmed by the "H" suffix in its ordering code and explicitly stated in the FEATURES section. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and high-temperature reverse bias-ensuring suitability for under-hood and cabin electronics in passenger vehicles and commercial fleets.
What is the forward voltage drop of SR103HR0G at rated current?
The forward voltage drop (VF) of SR103HR0G is 0.55 V at IF = 1 A and TJ = 25°C, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating and reflects typical conduction loss in real-world switching applications.
Does SR103HR0G have a guard ring structure?
Yes, SR103HR0G incorporates a guard ring for overvoltage protection, as listed in the FEATURES section. This structural feature enhances edge termination robustness, improving immunity to dv/dt-induced breakdown and supporting reliable operation during fast-switching transients in SMPS and motor drive circuits.
What packaging options are available for SR103HR0G?
SR103HR0G is supplied in DO-204AL (DO-41) package with tape-and-reel packing (5,000 units per reel), as indicated in the ORDERING INFORMATION table. The "H" in the part number denotes AEC-Q101 qualification, while "R0G" specifies green compound and standard lead finish-fully compatible with automated through-hole assembly processes.
SR103HR0G 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 1 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-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SR103HR0G FAQ
1.How can I place an order for SR103HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR103HR0G 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 SR103HR0G reliable?
The price and inventory of SR103HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR103HR0G is usually 5 days.
3.What payment methods are accepted for SR103HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR103HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR103HR0G?
SR103HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR103HR0G 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 SR103HR0G?
For technical support, including SR103HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR103HR0G requirements.
6.How does Aetrix verify that SR103HR0G is sourced from the original manufacturer or authorized distributors?
All SR103HR0G 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 SR103HR0G meets industry standards.
7.What is the process for return or replacement of SR103HR0G?
All SR103HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR103HR0G, 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 SR103HR0G part is unused and in its original packaging.
Return procedure for SR103HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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