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Taiwan Semiconductor Corporation SS115FSH
- Part No.:
- SS115FSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-128
- Datasheet:
-
SS115FSH.pdf
- Description:
- 1A, 150V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:9,338
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Product details
Overview
SS115FSH from Taiwan Semiconductor is a 1A, 150V Schottky barrier surface-mount rectifier in SOD-128 package, featuring low forward voltage (0.78 V at 1.0 A, 25°C), 34 pF junction capacitance, and AEC-Q101 qualification for automotive-grade reliability in DC/DC converters and lighting power stages.
For engineers reviewing the SS115FSH datasheet, SS115FSH pinout, SS115FSH application, or SS115FSH equivalent, key selection criteria include reverse voltage rating (150 V), thermal resistance (RθJL = 20 °C/W), surge capability (95 A @ 1 ms), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance.
Technical Context
The SS115FSH implements a single-die Schottky junction optimized for high-efficiency, low-loss rectification in medium-voltage switching power supplies. Its 150 V VRRM and 1 A continuous forward current support operation in 12–48 V input DC/DC topologies with minimal conduction loss.
Thermal performance is defined by RθJL = 20 °C/W and RθJA = 75 °C/W on a 5 mm × 5 mm Cu pad, enabling stable operation up to TJ = 150 °C. Reverse leakage remains ≤10 µA at 25°C and ≤1 mA at 125°C under rated VR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse voltage; sets upper limit for DC bus or output rail voltage handling |
| IF | 1 A - Continuous forward current rating; defines steady-state power stage current capacity |
| VF @ 1 A, 25°C | 0.78 V (max 0.95 V) - Directly determines conduction loss (Pcond ≈ 0.78 W) and thermal load |
| IFSM @ 1 ms | 95 A - Short-duration surge capability; supports inrush and transient overload without failure |
| CJ | 34 pF - Junction capacitance at 1 MHz / 4 V; impacts high-frequency switching noise and EMI filtering design |
| TJ max | 150 °C - Maximum junction temperature; constrains heatsinking and ambient operating range |
| MSL | Level 1 - No floor life limitation; compatible with standard reflow without dry-pack requirements |
Pinout & Package
Package: SOD-128 - Surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, cathode band polarity marking, and 0.028 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to lower-potential side (e.g., switch node or ground return) in buck/flyback configurations |
| Cathode | Output current exit point | Connected to output rail or filter capacitor; marked by visible band on device body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use per stress test requirements including temperature cycling, HTRB, and ESD |
| Low VF at high TJ | 0.63 V @ 1 A, 125°C - Maintains efficiency during thermal derating in enclosed environments |
| High IFSM | 95 A peak @ 1 ms - Enables robustness against startup surges and short-circuit transients |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - required for automotive and industrial end markets |
| MSL 1 rating | No moisture sensitivity concerns - eliminates baking steps and simplifies SMT line integration |
Applications
| Automotive On-Board DC/DC Converter | Industrial LED Driver Power Stage |
|---|---|
Use Scenario: Step-down conversion from 24 V vehicle battery to 5–12 V logic rails in ADAS ECUs and infotainment modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck converter, conducting during low-side switch off-time. Use Value: 150 V VRRM provides margin over 24 V system transients; AEC-Q101 ensures long-term reliability in under-hood thermal cycles. | Use Scenario: Constant-current LED string supply in streetlight or commercial lighting fixtures with 36–48 V input. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in flyback or buck-boost topology, managing inductor energy transfer. Use Value: Low 0.78 V VF reduces conduction loss at 1 A drive current, improving overall driver efficiency and thermal management. |
| USB-C PD Adapter Secondary Rectification | Telecom DC Power Module Output Stage |
Use Scenario: 20 V output rectification in compact 65 W USB-C power adapters using quasi-resonant flyback. IC Role / Device Role / Timing Role: High-frequency output rectifier replacing conventional Si diodes to minimize switching losses. Use Value: 34 pF CJ limits capacitive turn-off loss; MSL 1 enables direct placement without moisture mitigation overhead. | Use Scenario: -48 V telecom power shelf output rectification feeding distributed DC distribution boards. IC Role / Device Role / Timing Role: Primary output rectifier in isolated forward or half-bridge converter delivering 12–24 V loads. Use Value: 150 V VRRM accommodates reflected spikes and line surges; 20 °C/W RθJL allows direct PCB copper thermal coupling. |
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-1N5819-M3/54 | 40 V VRRM, 1 A, DO-204AL package, higher VF (0.9 V typ) | Limited to ≤28 V systems; not AEC-Q101 qualified | Lower-cost option for non-automotive 12 V supplies where voltage margin is sufficient |
| ON Semiconductor SB1150-TB | 150 V VRRM, 1 A, SOD-123 package, 45 pF CJ, no AEC-Q101 | SOD-123 has lower thermal performance (RθJA ≈ 125 °C/W); smaller footprint but higher junction temp rise | Preferred when board space is constrained and automotive qualification is not required |
Compared with VS-1N5819-M3/54 and SB1150-TB, the SS115FSH delivers superior voltage margin, lower capacitance, and automotive-grade reliability in the thermally efficient SOD-128 package-making it optimal for 24–48 V industrial and automotive DC/DC designs requiring long-term stability.
Availability
SS115FSH is available at Aetrix Electronics and suitable for automotive on-board DC/DC converters, industrial LED drivers, and telecom DC power modules requiring stable component supply, consistent parametric performance, and full traceability across production lots.
Supply support for SS115FSH 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, analog ICs, and protection components for industrial, automotive, and consumer applications.
The SS115FSH belongs to TSC's AEC-Q101-qualified FSH-series Schottky rectifiers, engineered for high-reliability power conversion in harsh thermal and electrical environments.
FAQ
What is the maximum junction temperature rating for SS115FSH?
The SS115FSH has a maximum junction temperature (TJ) of +150 °C, verified per absolute maximum ratings in the official datasheet. This rating enables operation in high-ambient environments such as automotive engine compartments or enclosed industrial enclosures. Derating curves confirm usable current capacity down to 0.5 A at 125 °C ambient with standard PCB mounting. The SS115FSH must be operated within this thermal limit to ensure long-term reliability and avoid parametric drift.
Is SS115FSH suitable for automotive applications?
Yes, the SS115FSH is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD) per automotive standards. Its SOD-128 package, MSL 1 rating, and halogen-free construction further support use in automotive ECUs, lighting modules, and on-board chargers. The SS115FSH is explicitly listed in TSC's automotive-grade product portfolio.
What is the forward voltage of SS115FSH at 1 A and 125°C?
The SS115FSH exhibits a typical forward voltage of 0.63 V and a maximum of 0.72 V at 1.0 A and 125°C, per the Electrical Specifications table in the datasheet. This low, temperature-stable VF directly reduces conduction losses in high-temperature operation-critical for thermally constrained applications like sealed LED drivers or automotive power supplies where the SS115FSH maintains efficiency across its full operating range.
Does SS115FSH have a specified junction-to-lead thermal resistance?
Yes, the SS115FSH has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, measured on a standard 5 mm × 5 mm copper pad PCB per JEDEC test conditions. This value enables accurate thermal modeling when the lead is thermally coupled to a large copper pour or heatsink. It is significantly lower than RθJA (75 °C/W), confirming that heat extraction via the leads-not ambient air-is the dominant thermal path for the SS115FSH.
What packaging and reel quantity is available for SS115FSH?
The SS115FSH is supplied in tape-and-reel format with 14,000 units per reel, packaged in the SOD-128 outline per the Ordering Information section of the datasheet. The reel complies with EIA-481 standards and is compatible with standard high-speed pick-and-place equipment. Each device is marked "115FSH" for traceability, and the packaging meets moisture sensitivity level (MSL) 1-requiring no dry storage or baking prior to assembly. This configuration supports both prototyping and high-volume manufacturing of the SS115FSH.
SS115FSH 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):
- 150 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 150 V
- Capacitance @ Vr, F:
- 34pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-128
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS115FSH FAQ
1.How can I place an order for SS115FSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS115FSH 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 SS115FSH reliable?
The price and inventory of SS115FSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS115FSH is usually 5 days.
3.What payment methods are accepted for SS115FSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS115FSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS115FSH?
SS115FSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS115FSH 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 SS115FSH?
For technical support, including SS115FSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS115FSH requirements.
6.How does Aetrix verify that SS115FSH is sourced from the original manufacturer or authorized distributors?
All SS115FSH 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 SS115FSH meets industry standards.
7.What is the process for return or replacement of SS115FSH?
All SS115FSH units undergo pre-shipment inspection (PSI). If there is an issue with SS115FSH, 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 SS115FSH part is unused and in its original packaging.
Return procedure for SS115FSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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