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Taiwan Semiconductor Corporation SR520H
- Part No.:
- SR520H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR520H.pdf
- Description:
- DIODE SCHOTTKY 200V 5A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,549
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Product details
Overview
SR520H from Taiwan Semiconductor is an AEC-Q101-qualified 5 A, 200 V Schottky barrier rectifier in DO-201AD package, featuring 1.05 V max forward voltage at 5 A and 1 mA max reverse leakage at 125 °C, optimized for high-efficiency DC/DC converters in automotive power systems.
For engineers reviewing the SR520H datasheet, SR520H pinout, SR520H application, or SR520H equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 120 A surge capability, junction-to-case thermal resistance of 6 °C/W, AEC-Q101 qualification, and DO-201AD mechanical compatibility with legacy through-hole layouts.
Technical Context
The SR520H implements a single-die Schottky structure with guard ring overvoltage protection, enabling stable operation up to 200 V reverse bias while maintaining low conduction loss. Its 1.05 V forward voltage at 5 A and 1 mA reverse current at 125 °C reflect optimized metal-semiconductor interface design for high-temperature switching applications.
Thermally, it delivers 6 °C/W junction-to-case resistance and 35 °C/W junction-to-ambient resistance under standard mounting conditions, supporting continuous 5 A operation within a -55 °C to +150 °C junction temperature range without derating below 100 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC/DC flyback or buck output stages |
| IF | 5 A - Continuous average forward current; supports sustained power delivery in 12–48 V industrial adapters |
| VF (max) | 1.05 V @ 5 A, 25 °C - Low conduction loss enables >92% efficiency in 12 V → 5 V synchronous rectifier replacements |
| IR (max) | 1 mA @ 200 V, 125 °C - Minimal leakage ensures stable hold-up during thermal stress in automotive under-hood environments |
| IFSM | 120 A - Peak non-repetitive surge rating; withstands inrush and fault transients in SMPS startup and short-circuit events |
| TJ max | +150 °C - Extended junction temperature rating allows operation in sealed enclosures without forced cooling |
| RθJC | 6 °C/W - Enables direct heatsink mounting for thermal management in space-constrained board designs |
Pinout & Package
Package: DO-201AD - Axial leaded, epoxy-molded case meeting UL 94V-0 flammability rating; cathode indicated by band; pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to input/high-side node in buck or flyback secondary; requires PCB copper area ≥ 100 mm² for thermal relief |
| Cathode (Lead 2, banded) | Forward current exit / reverse blocking terminal | Connected to output/ground return path; polarity marking prevents misassembly in automated insertion |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power modules requiring reliability across -40 °C to +125 °C ambient with zero defect screening |
| Guard ring structure | Prevents edge breakdown at 200 V reverse bias, eliminating need for external snubbers in high-dV/dt flyback topologies |
| 120 A IFSM | Supports 10× overload tolerance for 8.3 ms half-sine surges, enabling robustness against line transients in industrial AC/DC front-ends |
| Halogen-free construction | Complies with IEC 61249-2-21; eliminates brominated flame retardants for RoHS-compliant end-of-life recycling |
Applications
| Automotive DC/DC Converter | Industrial SMPS Output Rectification |
|---|---|
Use Scenario: 12 V → 3.3 V step-down converter in ADAS camera ECU with ambient temperature up to 105 °C. IC Role / Device Role / Timing Role: Primary output rectifier replacing MOSFET synchronous switch where gate drive complexity must be minimized. Use Value: 1.05 V VF reduces conduction loss by 35% vs. 1.6 V Si diode, lowering thermal load on compact heatsink. | Use Scenario: 48 V → 24 V isolated DC/DC module in factory automation PLC power supply. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in forward converter topology with 100 kHz switching frequency. Use Value: 120 A IFSM sustains 3× rated current during motor startup surges without degradation. |
| Telecom Adapter Rectification | Renewable Energy Charge Controller |
Use Scenario: Universal-input 100–240 VAC adapter for 5G small cell baseband unit with 20 W output. IC Role / Device Role / Timing Role: Output rectifier in active-clamp forward converter operating at 250 kHz. Use Value: 6 °C/W RθJC enables direct mounting to aluminum chassis, eliminating discrete heatsink and saving 120 mm² PCB area. | Use Scenario: Solar charge controller managing 24 V battery bank with MPPT algorithm and variable input from 18–50 V PV array. IC Role / Device Role / Timing Role: Reverse-polarity protection and battery isolation diode in dual-path charging architecture. Use Value: 1 mA IR at 125 °C prevents >1.2 W standby loss per string, preserving battery autonomy during extended night cycles. |
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-50WQ03FN-M3/45 | 30 V VRRM, 5 A, TO-220AC package, no AEC-Q101 qualification | Limited to ≤30 V systems; unsuitable for 200 V bus monitoring or 48 V telecom outputs | Select only for cost-sensitive 12–24 V consumer adapters where automotive qualification is unnecessary |
| ON Semiconductor SB5200-E3/54 | 200 V VRRM, 5 A, DO-201AD, but 1.15 V VF max and no AEC-Q101 certification | Higher conduction loss increases thermal stress in sealed automotive enclosures above 85 °C ambient | Acceptable for industrial SMPS where AEC-Q101 is not mandated and 0.1 V higher VF is tolerable |
Compared with VS-50WQ03FN-M3/45 and SB5200-E3/54, the SR520H uniquely combines 200 V rating, AEC-Q101 qualification, and 1.05 V forward voltage in DO-201AD-enabling drop-in replacement in automotive-grade 48 V systems without layout change or thermal redesign.
Availability
SR520H is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS output rectification, and telecom adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SR520H 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 since 1979.
The SR502–SR520 family was designed specifically for high-reliability, high-voltage Schottky rectification in automotive and industrial power conversion, emphasizing AEC-Q101 compliance, thermal robustness, and DO-201AD mechanical interoperability.
FAQ
What does the 'H' suffix indicate in SR520H?
The 'H' suffix in SR520H denotes AEC-Q101 qualification, confirming that the SR520H has undergone rigorous stress testing-including temperature cycling, highly accelerated life testing, and unbiased high humidity operating life-for use in automotive power electronics. This distinguishes SR520H from non-H variants like SR520, which lack automotive reliability validation.
Is SR520H compatible with standard DO-201AD footprints?
Yes, SR520H uses the industry-standard DO-201AD package with axial leads and identical mechanical dimensions to legacy rectifiers. Its cathode band marking, 1.10 g weight, and UL 94V-0 molding compound ensure direct mechanical and solder-process compatibility with existing through-hole assembly lines and reflow profiles specified in J-STD-002.
What is the maximum junction temperature for continuous operation of SR520H?
The SR520H supports continuous operation up to +150 °C junction temperature, verified per its absolute maximum ratings table. At this limit, reverse leakage remains ≤1 mA at 200 V, and forward voltage increases predictably-enabling reliable use in sealed automotive junction boxes where ambient temperatures reach +105 °C and PCB self-heating adds up to +45 °C.
How does SR520H's forward voltage compare to other 200 V Schottky rectifiers?
SR520H specifies 1.05 V maximum forward voltage at 5 A and 25 °C, matching or exceeding performance of competing 200 V Schottkys such as SB5200-E3/54 (1.15 V) and STPS5L200 (1.10 V). This lower VF directly reduces conduction loss-by 0.5 W at 5 A-making SR520H especially advantageous in thermally constrained 48 V automotive subsystems.
Does SR520H require derating at elevated ambient temperatures?
Yes, SR520H must be derated above 25 °C ambient per its forward current derating curve: at 75 °C ambient, maximum continuous IF drops to ~3.8 A; at 100 °C, it falls to ~2.5 A. Derating is governed by its 35 °C/W junction-to-ambient thermal resistance and 6 °C/W junction-to-case resistance-so effective heatsinking restores full 5 A capability even at high ambient.
SR520H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 200 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
SR520H FAQ
1.How can I place an order for SR520H through Aetrix?
Please submit a Request for Quotation (RFQ) for SR520H 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 SR520H reliable?
The price and inventory of SR520H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR520H is usually 5 days.
3.What payment methods are accepted for SR520H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR520H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR520H?
SR520H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR520H 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 SR520H?
For technical support, including SR520H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR520H requirements.
6.How does Aetrix verify that SR520H is sourced from the original manufacturer or authorized distributors?
All SR520H 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 SR520H meets industry standards.
7.What is the process for return or replacement of SR520H?
All SR520H units undergo pre-shipment inspection (PSI). If there is an issue with SR520H, 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 SR520H part is unused and in its original packaging.
Return procedure for SR520H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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