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Taiwan Semiconductor Corporation SS110LS
- Part No.:
- SS110LS
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
SS110LS.pdf
- Description:
- DIODE SCHOTTKY 100V 1A SOD123HE
- Quantity:
- Payment:
- Shipping:
Inventory:8,793
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Product details
Overview
SS110LS from Taiwan Semiconductor is a 1A, 100V Schottky barrier surface-mount rectifier in SOD-123HE package, featuring 0.70V forward voltage at 0.5A/25°C, 28pF junction capacitance, 30A peak surge current, and 125°C maximum junction temperature. It serves as a high-efficiency output rectifier in low-voltage DC-DC converters.
For engineers reviewing the SS110LS datasheet, SS110LS pinout, SS110LS application, or SS110LS equivalent, key selection criteria include its 100V reverse rating, low VF for reduced conduction loss, thermal resistance (RθJA = 70°C/W), moisture sensitivity level 1 compliance, and SOD-123HE footprint compatibility with automated assembly.
Technical Context
The SS110LS operates as a single-die, unidirectional Schottky rectifier optimized for high-frequency switching applications. Its low forward voltage drop and fast recovery (inherent to Schottky structure) minimize power loss during continuous conduction mode in buck-derived topologies.
Thermal performance is defined by RθJC = 25°C/W and RθJA = 70°C/W, with junction temperature rated from –55°C to +125°C. Reverse leakage remains ≤50µA at 25°C and ≤0.5mA at 125°C under full 100V reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage; sets upper limit for safe operation in 48V-output SMPS secondary side |
| IF | 1 A - Continuous forward current rating; supports typical 1A load in compact adapter designs |
| VF @ 0.5A, 25°C | 0.70 V - Low conduction loss enables >92% efficiency in 5–12V DC-DC outputs |
| CJ @ 1MHz, 4V | 28 pF - Low junction capacitance reduces switching noise and EMI in >500kHz converters |
| IFSM | 30 A - Withstands 8.3ms half-sine surge; handles startup inrush and transient overloads |
| TJ max | 125 °C - Enables operation in sealed enclosures without active cooling |
Pinout & Package
Package: SOD-123HE - Surface-mount plastic case with cathode band marking, 0.85mm max profile, UL 94V-0 molding compound, matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., ground or switch node in synchronous rectification) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail; blocks 100V reverse voltage during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-123HE package | 0.85mm height enables ultra-thin power supplies and space-constrained PCB layouts |
| Moisture Sensitivity Level 1 | No bake requirement before reflow; compatible with standard J-STD-020 handling and assembly |
| Halogen-free construction | Complies with IEC 61249-2-21; supports RoHS-compliant and environmentally regulated end products |
| High surge current capability | 30A IFSM withstands repeated line transients and hot-plug events without degradation |
Applications
| AC-DC Adapter Output Rectification | USB PD 20W–30W DC-DC Secondary Side |
|---|---|
Use Scenario: 5V/3A or 9V/2.2A USB-C power adapter with flyback topology. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce conduction loss and improve thermal margin. Use Value: 0.70V VF cuts rectifier power loss by ~40% vs. 1N5819, enabling smaller heatsinks and higher power density. | Use Scenario: Isolated buck-boost converter in portable battery-powered devices. IC Role / Device Role / Timing Role: Unidirectional freewheeling path during high-side switch off-time. Use Value: 28pF CJ minimizes capacitive coupling noise into feedback loop, improving regulation stability at 1MHz+ switching. |
| Industrial 24V Input DC-DC Module | LED Driver Constant-Current Stage |
Use Scenario: 24V-to-5V isolated module powering PLC I/O circuitry. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in forward or active-clamp forward topology. Use Value: 125°C TJ max allows reliable operation in ambient temperatures up to 85°C without derating. | Use Scenario: Constant-current LED driver with PWM dimming and 100V bus input. IC Role / Device Role / Timing Role: Freewheeling diode across inductor in buck-based current regulator. Use Value: 100V VRRM provides 2× safety margin over 48V LED string voltage, preventing avalanche failure during transients. |
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-1EQH01-M3/5AT | Same SOD-123HE package; 100V VRRM, 0.72V VF @ 1A, 35A IFSM | Slightly higher surge rating; identical thermal and layout compatibility | Preferred where higher IFSM margin is required without changing PCB |
| ON Semiconductor SB1100-TB | SOD-123 package (not HE variant); 100V VRRM, 0.82V VF @ 1A, 25A IFSM | Higher VF increases conduction loss; slightly larger footprint (SOD-123 vs SOD-123HE) | Acceptable where 0.12V higher VF is tolerable and legacy SOD-123 land pattern exists |
Compared with VS-1EQH01-M3/5AT and SB1100-TB, the SS110LS delivers the lowest forward voltage in its class (0.70V @ 0.5A), tighter thermal resistance (RθJA = 70°C/W), and superior high-temperature leakage control (≤0.5mA @ 125°C), making it optimal for thermally constrained, high-efficiency 100V-rated rectification.
Availability
SS110LS is available at Aetrix Electronics and suitable for AC-DC adapters, USB PD power supplies, and industrial DC-DC modules requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SS110LS 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-Q200 qualified product lines.
The SS110LS belongs to TSC's SS1xLS Schottky rectifier family, engineered for high-efficiency, surface-mount power conversion in consumer, industrial, and computing applications where low VF, compact size, and reliability are critical.
FAQ
What is the maximum junction temperature rating for SS110LS?
The SS110LS has a maximum junction temperature (TJ) rating of +125°C, as specified in the Absolute Maximum Ratings table. This allows continuous operation in ambient environments up to 85°C when mounted on standard FR-4 PCB with recommended pad layout. The device must not exceed this limit under steady-state or transient conditions to ensure long-term reliability and avoid parametric shift.
Does SS110LS have a halogen-free construction?
Yes, the SS110LS is halogen-free in accordance with IEC 61249-2-21, as confirmed in the Features section of the official datasheet. This makes it compliant with environmental regulations for consumer electronics and industrial equipment sold in EU, Japan, and other regulated markets where halogen content restrictions apply.
What is the forward voltage of SS110LS at 1A and 25°C?
The SS110LS exhibits a maximum forward voltage (VF) of 0.80V at 1.0A and 25°C, per the Electrical Specifications table. This value reflects worst-case conduction loss under full-rated DC current and is critical for calculating power dissipation (PLOSS = IF × VF) in thermal design.
Is SS110LS suitable for use in automotive applications?
The SS110LS is not AEC-Q200 qualified and is not recommended for automotive applications unless fully validated by the end customer. Taiwan Semiconductor does not specify automotive-grade qualification for the SS110LS, and its datasheet explicitly states that these products are "not designed for use in medical, life-saving, or life-sustaining applications" - a category that includes safety-critical automotive subsystems.
What packaging option is available for SS110LS?
The SS110LS is supplied in tape-and-reel packaging, with 10,000 units per reel, as stated in the Ordering Information section. This format supports high-speed automated placement on SMT lines and is compatible with standard 8mm carrier tape feeders used in electronics manufacturing.
SS110LS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 50 µA @ 100 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS110LS FAQ
1.How can I place an order for SS110LS through Aetrix?
Please submit a Request for Quotation (RFQ) for SS110LS 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 SS110LS reliable?
The price and inventory of SS110LS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS110LS is usually 5 days.
3.What payment methods are accepted for SS110LS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS110LS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS110LS?
SS110LS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS110LS 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 SS110LS?
For technical support, including SS110LS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS110LS requirements.
6.How does Aetrix verify that SS110LS is sourced from the original manufacturer or authorized distributors?
All SS110LS 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 SS110LS meets industry standards.
7.What is the process for return or replacement of SS110LS?
All SS110LS units undergo pre-shipment inspection (PSI). If there is an issue with SS110LS, 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 SS110LS part is unused and in its original packaging.
Return procedure for SS110LS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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