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Taiwan Semiconductor Corporation SS520FSH
- Part No.:
- SS520FSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
SS520FSH.pdf
- Description:
- 5A, 200V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,579
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Product details
Overview
SS520FSH from Taiwan Semiconductor is a 5A, 200V Schottky barrier surface-mount rectifier in SOD-128 package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.84 V at 5 A, 25°C), low reverse leakage (10 µA at 25°C), and 100 pF junction capacitance. It serves as a primary output rectifier in automotive-grade SMPS and on-board converters.
For engineers reviewing the SS520FSH datasheet, SS520FSH pinout, SS520FSH application, or SS520FSH equivalent, key selection criteria include its AEC-Q101 qualification, thermal resistance (RθJL = 13°C/W), surge rating (IFSM = 110 A), and voltage-class-specific VF/IR trade-off versus lower-voltage SS5xFSH variants.
Technical Context
The SS520FSH implements a single-die Schottky junction optimized for 200 V repetitive peak reverse voltage (VRRM) with minimal forward conduction loss at elevated temperatures. Its 0.70 V forward voltage at 5 A and 125°C enables stable operation in thermally constrained automotive and industrial power stages.
Thermal performance is defined by RθJL = 13°C/W and RθJA = 63°C/W on a 5 mm × 5 mm Cu pad, supporting continuous 5 A operation up to 125°C ambient when properly heatsinked. Junction capacitance of 100 pF at 1 MHz / 4 V enables fast switching with low EMI in high-frequency converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum blocking voltage without avalanche breakdown; defines use in 48 V–60 V input systems with safety margin. |
| IF | 5 A continuous - Rated average forward current; supports 60 W+ output in compact SOD-128 footprint. |
| VF @ 5 A, 25°C | 0.84 V max - Low conduction loss reduces heat generation and improves efficiency vs. silicon diodes. |
| IR @ 200 V, 25°C | 10 µA max - Ultra-low leakage preserves standby power in always-on circuits. |
| CJ @ 1 MHz, 4 V | 100 pF - Enables <100 ns reverse recovery; suitable for >500 kHz switching topologies. |
| IFSM (8.3 ms) | 110 A - Withstands inrush and transient surges in DC/DC startup and load-dump events. |
| TJ max | +150°C - Supports operation in under-hood automotive environments and sealed industrial enclosures. |
Pinout & Package
SS520FSH uses the SOD-128 surface-mount package: molded epoxy case rated UL 94V-0, matte tin-plated leads, cathode indicated by band, weight ≈ 0.028 g. Mounting requires 5 mm × 5 mm copper pad per thermal spec.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in synchronous buck); polarity critical for rectification. |
| Cathode | Forward current exit point | Connected to output rail; marked by visible band; carries full load current and must route to low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics including engine control units and ADAS power supplies. |
| Low VF at high TJ | 0.70 V @ 5 A, 125°C - Maintains efficiency during thermal stress, reducing need for oversized heatsinks. |
| Moisture sensitivity level 1 | No baking required before reflow - compatible with standard SMT assembly lines without special handling. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance. |
| High IFSM / IF ratio | 22× (110 A / 5 A) - Robust against short-duration overloads common in battery-powered systems. |
Applications
| Automotive On-Board DC/DC Converter | Industrial SMPS Secondary Rectifier |
|---|---|
Use Scenario: 12 V–48 V input to 3.3 V/5 V isolated DC/DC converter in vehicle infotainment head unit. IC Role / Device Role / Timing Role: Output rectifier in synchronous flyback or active clamp forward topology. Use Value: 0.84 V VF minimizes conduction loss at 5 A load; AEC-Q101 ensures reliability across -40°C to +125°C ambient. |
Use Scenario: 24 V input to 12 V/5 V non-isolated buck converter powering PLC I/O modules. IC Role / Device Role / Timing Role: Freewheeling diode in high-frequency (300–600 kHz) buck regulator. Use Value: 100 pF CJ and 110 A IFSM enable clean switching and surge resilience during motor startup transients. |
| LED Driver Power Stage | Adapter Secondary-Side Rectification |
Use Scenario: Constant-current LED driver for commercial lighting with 36 V bus and 2 A string current. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback stage. Use Value: 200 V VRRM accommodates reflected voltage spikes; 10 µA IR prevents standby power drift. |
Use Scenario: 19 V output adapter for laptop charging with 4.7 A output requirement. IC Role / Device Role / Timing Role: Primary secondary-side rectifier replacing slower FRD. Use Value: 0.84 V VF improves efficiency by ~1.2% vs. 1.1 V Si diode, reducing thermal load in enclosed housing. |
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-50WQ04FN-M3/45 | 45 V VRRM, 5 A, 0.45 V VF @ 5 A - lower voltage, lower VF, higher leakage (200 µA @ 45 V). | Not suitable for 200 V blocking; limited to ≤36 V output rails; better for ultra-low-loss 12 V systems. | Select only if system VRRM requirement is ≤45 V and lowest possible conduction loss is prioritized. |
| ON Semiconductor SB5200-E3/54 | 200 V VRRM, 5 A, 0.92 V VF @ 5 A - same voltage rating but higher VF and 120 pF CJ. | Compatible in same SOD-128 footprint and blocking capability, but less efficient at high load/temperature. | Acceptable drop-in alternative where 0.08 V higher VF is tolerable and cost is primary constraint. |
Compared with VS-50WQ04FN-M3/45 and SB5200-E3/54, SS520FSH uniquely balances 200 V blocking, 0.84 V VF, and 10 µA IR - making it optimal for automotive and industrial 24–48 V systems requiring both ruggedness and efficiency.
Availability
SS520FSH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial SMPS designs, and LED driver power stages requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for SS520FSH 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 devices, rectifiers, and protection components.
The SS5xFSH series was developed for high-reliability surface-mount rectification in automotive and industrial power conversion, emphasizing AEC-Q101 qualification, thermal robustness, and consistent parametric performance across voltage grades.
FAQ
What is the maximum junction temperature rating for SS520FSH?
The SS520FSH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows sustained operation in high-ambient environments such as under-hood automotive locations or sealed industrial enclosures. Derating curves confirm 5 A continuous current is supported up to 125°C ambient when mounted on a 5 mm × 5 mm Cu pad, as specified in the thermal performance section of the SS520FSH datasheet.
Is SS520FSH suitable for automotive applications?
Yes, SS520FSH is AEC-Q101 qualified and explicitly designed for automotive power systems. Its construction meets JESD201 Class 2 whisker testing, moisture sensitivity level 1, and operates reliably from -55°C to +150°C. The SS520FSH is deployed in on-board DC/DC converters, body control modules, and ADAS power supplies where 200 V blocking and thermal stability are required.
What is the forward voltage of SS520FSH at 5 A and 125°C?
The SS520FSH exhibits a typical forward voltage of 0.70 V and a maximum of 0.78 V at 5 A and 125°C, per electrical specifications table. This low, temperature-stable VF directly reduces conduction losses in high-temperature operating conditions, improving overall system efficiency and easing thermal design constraints compared to alternatives with higher VF drift.
Does SS520FSH have a halogen-free and RoHS-compliant construction?
Yes, SS520FSH is halogen-free per IEC 61249-2-21 and RoHS compliant, as confirmed in the features section of the official Taiwan Semiconductor datasheet. The molding compound, lead finish (matte tin), and internal materials meet environmental compliance requirements for global electronics manufacturing and export, including EU RoHS and China RoHS directives.
What is the junction-to-lead thermal resistance (RθJL) of SS520FSH?
The SS520FSH has a typical junction-to-lead thermal resistance (RθJL) of 13°C/W, measured on a standard 5 mm × 5 mm copper pad test board. This value enables effective heat transfer from the die to the PCB copper, supporting continuous 5 A operation without external heatsinking in well-designed layouts - a key advantage over higher-RθJL alternatives in space-constrained applications.
SS520FSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-128
- 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:
- 950 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 100pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS520FSH FAQ
1.How can I place an order for SS520FSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS520FSH 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 SS520FSH reliable?
The price and inventory of SS520FSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS520FSH is usually 5 days.
3.What payment methods are accepted for SS520FSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS520FSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS520FSH?
SS520FSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS520FSH 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 SS520FSH?
For technical support, including SS520FSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS520FSH requirements.
6.How does Aetrix verify that SS520FSH is sourced from the original manufacturer or authorized distributors?
All SS520FSH 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 SS520FSH meets industry standards.
7.What is the process for return or replacement of SS520FSH?
All SS520FSH units undergo pre-shipment inspection (PSI). If there is an issue with SS520FSH, 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 SS520FSH part is unused and in its original packaging.
Return procedure for SS520FSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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