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Taiwan Semiconductor Corporation SS120FSH
- Part No.:
- SS120FSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
SS120FSH.pdf
- Description:
- 1A, 200V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,985
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Product details
Overview
SS120FSH from Taiwan Semiconductor is a 1 A, 200 V Schottky barrier surface-mount rectifier in SOD-128 package, featuring 0.81 V forward voltage at 1.0 A and 25°C, 30 A surge current capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as a high-efficiency freewheeling or output rectifier in compact DC/DC converters.
For engineers reviewing the SS120FSH datasheet, SS120FSH pinout, SS120FSH application, or SS120FSH equivalent, key selection criteria include its 200 V reverse voltage rating, low thermal resistance (RθJL = 20°C/W), junction temperature range of –55°C to +150°C, and suitability for high-frequency switching power supplies where low conduction loss is critical.
Technical Context
The SS120FSH is a single-die Schottky rectifier optimized for high-voltage, medium-current applications where fast recovery and low forward drop are required. Its 200 V VRRM and 1 A average forward current rating target secondary-side rectification in isolated flyback and forward converters operating up to several hundred kHz.
Thermal performance is defined by RθJL = 20°C/W and RθJA = 75°C/W on a 5 mm × 5 mm Cu pad PCB, enabling reliable operation at full rated current up to +125°C ambient when properly mounted. Reverse leakage remains ≤10 µA at 25°C and ≤1 mA at 125°C under rated reverse voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage; defines safe blocking capability in high-voltage DC/DC outputs |
| IF | 1 A - Continuous average forward current; supports stable operation in 5–12 W SMPS designs |
| VF @ 1.0 A, 25°C | 0.81 V (typ), 1.10 V (max) - Low conduction loss reduces heat generation and improves efficiency vs. PN diodes |
| IFSM | 30 A (8.3 ms) - Withstands transient surges during startup or fault conditions without failure |
| Junction Temp Range | –55°C to +150°C - Enables use in under-hood automotive environments and industrial enclosures |
| CJ | 30 pF @ 1 MHz, 4 V - Low capacitance minimizes switching losses and EMI in high-frequency topologies |
| RθJL | 20°C/W - Efficient heat transfer to PCB copper enables compact thermal design without heatsinks |
Pinout & Package
SS120FSH uses the SOD-128 surface-mount package with a single anode and cathode configuration. Polarity is marked by a cathode band on the device body. The package features matte tin-plated leads, J-STD-002 solderability, and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit point | Connected to output rail; cathode band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - suitable for infotainment, ADAS power rails |
| Low VF at high TJ | 0.66 V @ 1.0 A, 125°C - Maintains efficiency across full operating temperature range |
| High IFSM/IF ratio (30×) | Robust surge handling without derating - simplifies input capacitor and snubber design |
| SOD-128 mechanical robustness | Meets JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 - supports reflow and long-term reliability |
| Halogen-free & RoHS compliant | Complies with IEC 61249-2-21 and EU RoHS - meets environmental compliance for global OEMs |
Applications
| Automotive On-Board DC/DC Converter | Industrial LED Driver Power Stage |
|---|---|
Use Scenario: Step-down conversion from 24 V battery to 5 V/3.3 V for vehicle control modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck-derived topology. Use Value: 200 V VRRM provides margin against load dump transients; 0.81 V VF reduces conduction loss at 1 A load. | Use Scenario: Constant-current regulation for high-brightness LED strings in factory lighting fixtures. IC Role / Device Role / Timing Role: Freewheeling diode in boost or SEPIC LED driver IC feedback loop. Use Value: Low 30 pF junction capacitance minimizes switching noise coupling into current-sense path. |
| USB-C PD Adapter Secondary Rectifier | Telecom DC/DC Module Input Protection |
Use Scenario: High-frequency rectification in 65 W USB-C power adapter with GaN primary-side switching. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path after transformer isolation. Use Value: 150°C max junction temperature and 20°C/W RθJL support compact, fanless adapter designs. | Use Scenario: Reverse polarity and overvoltage protection in 48 V telecom power distribution boards. IC Role / Device Role / Timing Role: Series-blocking diode in hot-swap or OR-ing configuration. Use Value: 1 mA reverse leakage at 125°C ensures minimal standby power loss in always-on systems. |
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-1EWH02-M3/5AT | 200 V VRRM, 1 A IF, but VF = 0.85 V (max) @ 1 A, 25°C; SOD-123FL package | Smaller footprint (SOD-123FL vs SOD-128), higher thermal resistance (RθJA ≈ 100°C/W) | Prefer SS120FSH when board space allows and thermal performance is critical |
| ON Semiconductor SB120 | 200 V VRRM, 1 A IF, VF = 0.84 V (max) @ 1 A, 25°C; TO-277A package | Larger TO-277A outline, higher RθJA (≈90°C/W), no AEC-Q101 qualification | SS120FSH preferred for automotive or thermally constrained layouts requiring AEC-Q101 |
Compared with VS-1EWH02-M3/5AT and SB120, the SS120FSH delivers lower forward voltage at elevated temperature, superior thermal dissipation via SOD-128, and automotive-grade qualification - making it optimal for space-constrained, high-reliability DC/DC converter designs.
Availability
SS120FSH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial LED drivers, and USB-C PD adapters requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SS120FSH 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 rectifiers, MOSFETs, and TVS diodes, with global distribution and AEC-Q101-compliant product lines.
The SS120FSH belongs to TSC's FSH-series Schottky rectifier family, engineered for high-efficiency, high-reliability power conversion in automotive and industrial applications where low VF, robust surge capability, and thermal stability are essential.
FAQ
What is the maximum junction temperature rating for SS120FSH?
The SS120FSH has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows continuous operation in high-ambient environments such as automotive engine compartments or enclosed industrial power supplies. Derating curves confirm usable current capacity up to +125°C ambient when mounted on a standard 5 mm × 5 mm copper pad. The SS120FSH must not be operated beyond this limit to ensure long-term reliability.
Is SS120FSH suitable for automotive applications?
Yes, the SS120FSH is AEC-Q101 qualified, meaning it has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for automotive electronics. It is explicitly recommended for on-board DC/DC converters and other non-safety-critical power systems in vehicles. The SS120FSH's –55°C to +150°C junction range, low leakage at high temperature, and halogen-free construction align with automotive OEM specifications.
What is the forward voltage of SS120FSH at 1.0 A and 125°C?
The SS120FSH exhibits a typical forward voltage of 0.66 V and a maximum of 0.80 V at 1.0 A and 125°C, per electrical specifications in the Taiwan Semiconductor datasheet. This low VF at elevated temperature directly contributes to improved system efficiency and reduced thermal load compared to alternatives with higher temperature coefficients. The SS120FSH maintains this performance without external cooling in well-designed PCB layouts.
Does SS120FSH have a specified junction-to-case thermal resistance?
Yes, the SS120FSH has a specified junction-to-case thermal resistance (RθJC) of 18°C/W, measured under standardized test conditions. This parameter reflects heat transfer from die to package case surface and is used alongside RθJL = 20°C/W (junction-to-lead) to model thermal behavior in real PCB assemblies. The SS120FSH's RθJC value supports accurate thermal simulation for layout optimization in high-power-density applications.
What packaging and reel quantity is offered for SS120FSH?
The SS120FSH is supplied in tape-and-reel format with 14,000 units per reel, compatible with standard SMT pick-and-place equipment. The SOD-128 package uses matte tin-plated leads meeting J-STD-002 solderability requirements, and moisture sensitivity level is rated at Level 1 per J-STD-020 - meaning no dry-pack or baking is required prior to assembly. This packaging supports high-volume automated manufacturing of the SS120FSH without process interruptions.
SS120FSH 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS120FSH FAQ
1.How can I place an order for SS120FSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS120FSH 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 SS120FSH reliable?
The price and inventory of SS120FSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS120FSH is usually 5 days.
3.What payment methods are accepted for SS120FSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS120FSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS120FSH?
SS120FSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS120FSH 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 SS120FSH?
For technical support, including SS120FSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS120FSH requirements.
6.How does Aetrix verify that SS120FSH is sourced from the original manufacturer or authorized distributors?
All SS120FSH 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 SS120FSH meets industry standards.
7.What is the process for return or replacement of SS120FSH?
All SS120FSH units undergo pre-shipment inspection (PSI). If there is an issue with SS120FSH, 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 SS120FSH part is unused and in its original packaging.
Return procedure for SS120FSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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