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Taiwan Semiconductor Corporation SR505HR0G
- Part No.:
- SR505HR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR505HR0G.pdf
- Description:
- DIODE SCHOTTKY 50V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:4,406
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Product details
Overview
SR505HR0G from Taiwan Semiconductor is a 5A, 50V AEC-Q101-qualified Schottky barrier rectifier in DO-201AD package, featuring 0.70V max forward voltage at 5A/25°C, 120A surge current capability, and guard ring–enhanced overvoltage protection-used in automotive-grade DC-DC converters and industrial SMPS.
For engineers reviewing the SR505HR0G datasheet, SR505HR0G pinout, SR505HR0G application, or SR505HR0G equivalent, key selection criteria include its AEC-Q101 qualification, 50V VRRM, 10mA reverse leakage at 100°C, DO-201AD thermal resistance (RθJA = 35°C/W), and cathode-band polarity marking for reliable high-efficiency rectification.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring termination to sustain high dv/dt (10,000 V/µs) and suppress avalanche failure under transient overvoltage. Its low VF and high IFSM support high-frequency switching topologies where conduction loss and surge robustness are critical.
Rated for TJ = –55°C to +150°C operation, SR505HR0G delivers stable performance across automotive under-hood environments. The pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 48V automotive or 36V industrial DC-DC inputs. |
| IF | 5 A - Continuous average forward current; supports sustained power delivery in compact 12–24W converter designs. |
| IFSM | 120 A - Non-repetitive surge current (8.3ms half-sine); withstands inrush and fault transients without failure. |
| VF (max) | 0.70 V @ 5A, 25°C - Low conduction loss enables >92% efficiency in 5V/3A output stages. |
| IR (max) | 10 µA @ 50V, 100°C - Minimal leakage preserves standby power budget in always-on automotive modules. |
| RθJA | 35 °C/W - Junction-to-ambient thermal resistance; enables natural convection cooling on standard 1-in² copper area. |
| Polarity | Cathode band marked - Unambiguous orientation for automated placement and manual inspection. |
Pinout & Package
DO-201AD axial-leaded package with cathode band indicating terminal polarity; body length 7.62 mm, diameter 2.72 mm, lead spacing 5.08 mm, weight ≈1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to unregulated input rail; must handle full load current and surge energy. |
| Cathode | Output current exit point | Connected to output filter capacitor and inductor; marked by visible band for orientation assurance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Guard ring structure | Prevents edge breakdown during fast dv/dt events, enabling reliable operation in hard-switched flyback and boost converters. |
| Low VF / high efficiency | Reduces conduction loss by ≥30% vs. comparable PN rectifiers, lowering heatsink requirements in space-constrained adapters. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for export to regulated markets without material declaration risk. |
| J-STD-002 solderability | Ensures consistent wetting and joint integrity during wave and reflow assembly, minimizing cold-solder defects in high-volume production. |
Applications
| Automotive DC-DC Converter | Industrial SMPS |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck converter in ADAS camera module with ambient temperature up to 105°C. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck stage; handles continuous 5A load and 120A surge during cold-crank. Use Value: 0.70V VF minimizes power loss at high duty cycle; AEC-Q101 rating ensures functional safety compliance. | Use Scenario: 48V-input telecom power supply delivering 24V/2A to fan controllers and sensors. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in forward converter topology; clamps transformer reset energy. Use Value: 10,000 V/µs dv/dt rating prevents false triggering during MOSFET turn-off; DO-201AD mounting simplifies heatsinking. |
| USB-C PD Adapter | LED Driver Power Stage |
Use Scenario: 20V-output active-clamp forward adapter supporting 65W USB-C PD with tight thermal envelope. IC Role / Device Role / Timing Role: Primary-side snubber diode and secondary-side rectifier in dual-stage architecture. Use Value: 120A IFSM absorbs clamp energy surges; 35°C/W RθJA allows derating to 3.8A at 85°C ambient. | Use Scenario: Constant-current LED driver for street lighting with 36V bus and 1.5A string current. IC Role / Device Role / Timing Role: High-side rectifier in buck-boost LED controller feedback path; conducts during off-time. Use Value: 10µA IR at 100°C prevents current drift in precision current sense; cathode band ensures correct polarity in high-density layout. |
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-50SQ045 | 45V VRRM, 0.52V VF @ 5A, TO-277 package (surface-mount) | Lacks AEC-Q101 qualification; lower VRRM limits use in 48V systems | Preferred for cost-sensitive consumer adapters where AEC-Q101 is not required. |
| ON Semiconductor SB550 | 50V VRRM, 0.72V VF @ 5A, DO-201AD, no AEC-Q101 data published | Same package and voltage rating but unqualified for automotive; higher VF increases conduction loss | Suitable for industrial SMPS where qualification is optional and thermal margin exists. |
Compared with VS-50SQ045 and SB550, SR505HR0G uniquely combines AEC-Q101 qualification, 50V rating, and DO-201AD through-hole compatibility-making it the only drop-in solution for automotive-grade 5A rectification requiring both reliability and legacy assembly support.
Availability
SR505HR0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS, and USB-C PD adapters requiring stable component supply with long-term lifecycle assurance.
Supply support for SR505HR0G 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 computing markets since 1979.
The SR502–SR520 series was designed specifically for high-reliability rectification in automotive power systems and industrial switch-mode supplies-emphasizing AEC-Q101 compliance, thermal robustness, and surge resilience.
FAQ
What is the maximum junction temperature rating for SR505HR0G?
The SR505HR0G has a maximum junction temperature (TJ) of +150°C, validated per AEC-Q101 stress testing. This rating enables operation in under-hood automotive environments and high-ambient industrial enclosures. Derating curves in the SR505HR0G datasheet define allowable current versus case temperature to maintain safe thermal margins.
Is SR505HR0G pin-compatible with non-AEC-Q101 versions like SR505H?
Yes, SR505HR0G shares identical DO-201AD mechanical dimensions, anode/cathode terminal configuration, and marking layout with SR505H and SR505. The "R0G" suffix denotes green compound and tape-and-reel packaging; electrical and thermal specs remain unchanged across these variants.
What does the "H" in SR505HR0G signify?
The "H" in SR505HR0G indicates full AEC-Q101 qualification-covering stress tests including HTGB, HTRB, temperature cycling, and ESD. This distinguishes SR505HR0G from standard SR505 variants and confirms suitability for automotive powertrain and body electronics applications.
Can SR505HR0G replace SR506HR0G in a 60V design?
No-SR505HR0G has a 50V VRRM, while SR506HR0G is rated for 60V. Substituting SR505HR0G in a 60V circuit risks reverse breakdown during line transients. Always verify VRRM margin ≥20% above peak system voltage before interchanging SR505HR0G with higher-voltage family members.
Does SR505HR0G require a heatsink in typical 5A operation?
In free-air conditions at 25°C ambient, SR505HR0G's RθJA of 35°C/W results in ~122°C junction rise at 5A (PD ≈ 3.5W), exceeding its 150°C limit. A minimum 1-in² copper pad or small clip-on heatsink is recommended. Thermal simulation using SR505HR0G's RθJC = 6°C/W is advised for final layout validation.
SR505HR0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR505HR0G FAQ
1.How can I place an order for SR505HR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR505HR0G 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 SR505HR0G reliable?
The price and inventory of SR505HR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR505HR0G is usually 5 days.
3.What payment methods are accepted for SR505HR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR505HR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR505HR0G?
SR505HR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR505HR0G 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 SR505HR0G?
For technical support, including SR505HR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR505HR0G requirements.
6.How does Aetrix verify that SR505HR0G is sourced from the original manufacturer or authorized distributors?
All SR505HR0G 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 SR505HR0G meets industry standards.
7.What is the process for return or replacement of SR505HR0G?
All SR505HR0G units undergo pre-shipment inspection (PSI). If there is an issue with SR505HR0G, 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 SR505HR0G part is unused and in its original packaging.
Return procedure for SR505HR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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