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Taiwan Semiconductor Corporation SS320FSH
- Part No.:
- SS320FSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
SS320FSH.pdf
- Description:
- 3A, 200V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:2,312
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Product details
Overview
SS320FSH from Taiwan Semiconductor is a 200 V, 3 A surface-mount Schottky barrier rectifier in SOD-128 package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.85 V at 3.0 A, 25°C) and low junction capacitance (54 pF). It operates up to 150°C junction temperature and supports automotive-grade reliability via AEC-Q101 qualification.
For engineers reviewing the SS320FSH datasheet, SS320FSH pinout, SS320FSH application, or SS320FSH equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 70 A surge current rating, thermal resistance (RθJL = 16 °C/W), and suitability for space-constrained, high-frequency switching power supplies requiring low conduction loss.
Technical Context
The SS320FSH implements a single-die Schottky junction optimized for fast recovery and minimal reverse recovery charge-critical for reducing switching losses in high-frequency SMPS topologies. Its 200 V VRRM rating enables use in 48 V–60 V input systems with safety margin, while the SOD-128 package provides enhanced thermal dissipation over standard SOD-123.
Designed for operation across –55°C to +150°C, the device maintains stable leakage performance (<10 µA at 25°C, <1 mA at 125°C) and forward voltage characteristics (0.71 V at 3.0 A, 125°C), supporting robust thermal design in enclosed or high-ambient environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Enables use in 48 V–60 V bus applications with ≥3× safety margin against transients |
| IF | 3 A continuous - Supports compact 15–25 W DC/DC converter designs without forced air cooling |
| IFSM (8.3 ms) | 70 A - Withstands inrush currents during cold-start in industrial power modules |
| VF @ 3.0 A, 25°C | 0.85 V max - Reduces conduction loss to ≤2.55 W, improving efficiency in high-duty-cycle operation |
| CJ @ 1 MHz, 4 V | 54 pF - Minimizes capacitive switching loss and EMI in >500 kHz converters |
| RθJL | 16 °C/W - Allows direct PCB copper pad heat sinking, enabling thermal design without heatsinks below 2 W dissipation |
| TJ max | +150 °C - Supports operation in under-hood automotive or sealed industrial enclosures |
Pinout & Package
SOD-128 surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance; UL 94V-0 molding compound; 0.028 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to lower-potential node (e.g., switch node in buck sync rectifier); requires low-inductance trace routing |
| Cathode | Current exit point under forward bias; marked by band | Connected to output rail or ground return; serves as reference for thermal pad attachment on PCB |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HAST) |
| Low VF at high temperature | 0.71 V max at 3.0 A and 125°C - Maintains efficiency stability across full operating range |
| High IFSM capability | 70 A peak surge (8.3 ms) - Eliminates need for parallel devices in transient-heavy 48 V systems |
| Moisture sensitivity level 1 | No floor life limitation - Compatible with standard SMT reflow without dry-pack or baking |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - Supports green manufacturing and export compliance |
Applications
| On-board DC/DC Converter | LED Lighting Driver |
|---|---|
Use Scenario: Point-of-load regulation in automotive ADAS ECUs converting 12 V or 48 V to 3.3 V/5 V for sensors and microcontrollers. IC Role / Device Role / Timing Role: Synchronous rectifier replacing MOSFETs in buck secondary side to reduce gate drive complexity and conduction loss. Use Value: 0.85 V VF at 3 A lowers power loss by ~1.2 W vs. typical 45 V Schottky, extending thermal margin in sealed enclosures. | Use Scenario: Constant-current LED driver for commercial downlights using flyback topology with 36 V output. IC Role / Device Role / Timing Role: Output rectifier handling 3 A average current at 100 kHz switching frequency. Use Value: 54 pF junction capacitance minimizes switching loss and EMI generation, easing EMC filter design. |
| Industrial SMPS Adapter | Telecom Power Shelf |
Use Scenario: Universal-input (90–264 VAC) adapter delivering 24 V/3 A for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side rectifier in LLC resonant converter operating at 200–500 kHz. Use Value: RθJL = 16 °C/W enables direct thermal coupling to 5 mm × 5 mm Cu pad, achieving TJ < 115°C at full load without heatsink. | Use Scenario: 48 V intermediate bus converter in modular telecom power shelf supplying multiple 12 V/5 V POLs. IC Role / Device Role / Timing Role: High-reliability output rectifier rated for continuous 200 V reverse stress during hold-up time. Use Value: 200 V VRRM provides 2.5× margin over 48 V nominal bus, preventing failure during 100 V transients per GR-1089. |
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-3EY20-M3/54 | 200 V, 3 A, SOD-123 package; higher VF (0.92 V typ @ 3 A); RθJA = 90 °C/W | Limited thermal performance in high-density layouts due to smaller SOD-123 footprint | Prefer SS320FSH where board space allows SOD-128 and thermal management is critical |
| ON Semiconductor SB320-E3/54 | 200 V, 3 A, SOD-123; AEC-Q101 not claimed; VF = 0.87 V max @ 3 A, 25°C | Not qualified for automotive; higher IR (20 µA @ 25°C vs. SS320FSH's 10 µA) | Select SS320FSH for automotive or high-reliability industrial use requiring AEC-Q101 and tighter leakage control |
Compared with VS-3EY20-M3/54 and SB320-E3/54, the SS320FSH delivers superior thermal performance (16 °C/W vs. ≥90 °C/W), lower leakage at high temperature, and formal AEC-Q101 validation-making it the preferred choice for thermally constrained or automotive-qualified designs.
Availability
SS320FSH is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and LED lighting drivers requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for SS320FSH 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 semiconductor manufacturer specializing in discrete power devices, including Schottky rectifiers, MOSFETs, and TVS diodes, with global distribution and AEC-Q101 qualification capabilities.
The SS320FSH belongs to TSC's FSH-series Schottky rectifier family, engineered for high-efficiency, high-reliability power conversion in automotive, industrial, and lighting applications where low VF, robust surge capability, and thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the SS320FSH?
The SS320FSH has a maximum junction temperature (TJ) rating of +150°C, validated across its full operating range. This allows reliable operation in high-ambient environments such as under-hood automotive locations or sealed industrial enclosures. Derating curves confirm usable current capacity down to –55°C, and thermal resistance values (RθJL = 16 °C/W) enable accurate junction temperature estimation in real-world PCB layouts. The SS320FSH must be mounted on a minimum 5 mm × 5 mm copper pad to achieve specified thermal performance.
Is the SS320FSH suitable for automotive applications?
Yes, the SS320FSH is AEC-Q101 qualified, meaning it has passed stress tests required for automotive power electronics-including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. Its 200 V VRRM, low leakage (<1 mA at 125°C), and robust surge rating (70 A IFSM) make it appropriate for 12 V and 48 V automotive subsystems such as ADAS camera modules and body control units. The SS320FSH is not intended for safety-critical systems like airbag controllers unless validated per ISO 26262.
What is the forward voltage of the SS320FSH at 3.0 A and 125°C?
The SS320FSH exhibits a maximum forward voltage of 0.80 V at 3.0 A and 125°C, with a typical value of 0.71 V under those conditions. This low VF at elevated temperature ensures stable conduction loss and efficiency retention in thermally demanding applications. Data is measured per pulse test (PW = 0.3 ms) and reflects actual performance in high-frequency switching circuits where junction heating dominates ambient effects. The SS320FSH's VF remains significantly lower than silicon PN rectifiers at equivalent ratings.
Does the SS320FSH have moisture sensitivity level (MSL) restrictions?
No, the SS320FSH is rated MSL Level 1 per J-STD-020, meaning it has no floor life limitation and may be stored indefinitely at standard ambient conditions without dry-packaging or baking prior to SMT reflow. This simplifies manufacturing logistics and eliminates yield risk from moisture-induced popcorning. The device uses a UL 94V-0 compliant molding compound and matte tin-plated leads that meet J-STD-002 solderability requirements. The SS320FSH is fully compatible with standard lead-free reflow profiles.
What package type does the SS320FSH use, and what are its mechanical advantages?
The SS320FSH uses the SOD-128 surface-mount package-a thermally enhanced variant of SOD-123 with larger copper slugs and optimized internal leadframe geometry. Its 0.028 g mass, polarity-indicating cathode band, and JESD 201 Class 2 whisker resistance support high-reliability automated assembly. Compared to SOD-123, the SOD-128 improves thermal resistance by ~30% (RθJL = 16 °C/W vs. ~22–25 °C/W), enabling higher power density in compact DC/DC converters. The SS320FSH's SOD-128 footprint is standardized and supported by major CAD libraries.
SS320FSH 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 54pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS320FSH FAQ
1.How can I place an order for SS320FSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS320FSH 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 SS320FSH reliable?
The price and inventory of SS320FSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS320FSH is usually 5 days.
3.What payment methods are accepted for SS320FSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS320FSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS320FSH?
SS320FSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS320FSH 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 SS320FSH?
For technical support, including SS320FSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS320FSH requirements.
6.How does Aetrix verify that SS320FSH is sourced from the original manufacturer or authorized distributors?
All SS320FSH 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 SS320FSH meets industry standards.
7.What is the process for return or replacement of SS320FSH?
All SS320FSH units undergo pre-shipment inspection (PSI). If there is an issue with SS320FSH, 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 SS320FSH part is unused and in its original packaging.
Return procedure for SS320FSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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