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Taiwan Semiconductor Corporation SS110ALH
- Part No.:
- SS110ALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SS110ALH.pdf
- Description:
- 1A, 100V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,751
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Product details
Overview
SS110ALH from Taiwan Semiconductor is a 1A, 100V Schottky barrier surface-mount rectifier in Thin SMA package, featuring low forward voltage (0.75V @ 1A, 25°C), high surge capability (30A IFSM), AEC-Q101 qualification, and junction temperature up to +150°C - deployed in on-board DC/DC converters and lighting power stages.
For engineers reviewing the SS110ALH datasheet, SS110ALH pinout, SS110ALH application, or SS110ALH equivalent, key selection criteria include reverse voltage rating (100V VRRM), thermal resistance (RθJA = 78°C/W), leakage current (10µA @ 25°C), and automotive-grade reliability per AEC-Q101.
Technical Context
The SS110ALH is a single-die Schottky rectifier optimized for high-frequency switching applications where low conduction loss and fast recovery are critical. Its 100V VRRM rating targets mid-voltage DC/DC conversion, while its 0.75V forward drop at 1A reduces power dissipation versus silicon diodes.
Thermal performance is defined by RθJL = 24°C/W and RθJA = 78°C/W on a 5mm × 5mm Cu pad PCB - enabling compact layout in space-constrained automotive and industrial power modules without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage; sets upper limit for DC bus or output rail voltage in SMPS designs |
| IF | 1 A continuous - defines steady-state current handling in adapter or LED driver output stage |
| VF @ 1A, 25°C | 0.75 V (max 0.83 V) - directly determines conduction loss (0.75W @ 1A) and thermal load in high-duty-cycle operation |
| IR @ 100V, 25°C | 10 µA - ultra-low leakage enables stable biasing in precision sensing or low-power standby circuits |
| IFSM (8.3ms) | 30 A - supports inrush current tolerance during cold-start of DC/DC converters or LED arrays |
| TJ max | +150 °C - allows operation in under-hood automotive environments or sealed industrial enclosures |
| CJ @ 1MHz, 4V | 36 pF - low junction capacitance minimizes switching loss and EMI in >100kHz converters |
Pinout & Package
Package: Thin SMA - surface-mount, single-anode/single-cathode configuration with cathode band marking; moisture sensitivity level 1 (J-STD-020); RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to input rail or switch node; must handle full forward current and transient surges |
| Cathode | Output current terminal | Connected to output capacitor or load; polarity marked by visible cathode band on package body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control, lighting, and infotainment power supplies |
| Low VF at high temperature | 0.60 V @ 1A, 125°C - maintains efficiency and thermal stability in thermally stressed environments |
| High IFSM surge rating | 30 A (8.3ms) - withstands repeated startup transients without degradation in industrial power modules |
| Thin SMA package | 0.028 g weight and JEDEC-compliant footprint - enables automated placement and high-density PCB layouts |
Applications
| On-board DC/DC Converter | LED Lighting Driver |
|---|---|
Use Scenario: Step-down conversion from 12–48V bus to 3–24V for automotive interior lighting or smart building fixtures. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology, conducting during low-side switch off-time. Use Value: 0.75V VF reduces conduction loss by ~30% vs. standard PN diodes, improving system efficiency and easing thermal design. | Use Scenario: Constant-current LED string supply in commercial downlights or streetlight drivers. IC Role / Device Role / Timing Role: Freewheeling diode in flyback or buck-boost converter output stage. Use Value: 100V VRRM safely handles reflected voltage spikes; 10µA IR prevents standby current drift in dimming circuits. |
| AC-DC Adapter Secondary | Industrial SMPS Auxiliary Rail |
Use Scenario: Secondary-side rectification in 5–20W wall adapters powering IoT gateways or sensors. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated 3.3V/5V/12V output after transformer secondary winding. Use Value: Thin SMA footprint fits tight adapter PCBs; AEC-Q101 qualification ensures long-term reliability in unattended deployments. | Use Scenario: Isolated auxiliary supply (e.g., 15V @ 100mA) for gate drivers or controller bias in motor drives. IC Role / Device Role / Timing Role: Rectifier in small-area flyback or forward converter providing isolated low-power bias. Use Value: RθJA = 78°C/W allows operation at full load without heatsink on standard FR4; 150°C TJ rating supports ambient up to 85°C. |
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-1N5819TR | 40V VRRM, 1A IF, higher VF (0.9V @ 1A), no AEC-Q101 qualification | Limited to ≤40V systems; not suitable for automotive or 100V bus designs | Select only for cost-sensitive, non-automotive 24V or lower applications where leakage and surge margin are secondary |
| ON Semiconductor SB1100-T | 100V VRRM, 1A IF, VF = 0.82V @ 1A, AEC-Q101 qualified, same Thin SMA package | Identical voltage/current rating and qualification; slightly higher VF increases conduction loss by ~9% | Drop-in alternative if SS110ALH lead time is constrained; verify thermal margin due to higher VF |
Compared with VS-1N5819TR and SB1100-T, the SS110ALH delivers superior thermal performance (RθJA = 78°C/W), lower forward voltage at elevated temperature, and tighter leakage control - making it preferred for automotive and high-reliability industrial DC/DC outputs.
Availability
SS110ALH is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and LED lighting applications requiring stable component supply across automotive, industrial, and consumer production programs.
Supply support for SS110ALH 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 automotive, industrial, and computing markets.
The SS110ALH belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-efficiency, high-reliability power conversion in harsh-environment applications such as automotive lighting and industrial power supplies.
FAQ
What is the maximum junction temperature rating for SS110ALH?
The SS110ALH has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings table. This allows reliable operation in under-hood automotive environments or sealed industrial enclosures where ambient temperatures reach 85–105°C. Derating curves in the SS110ALH datasheet confirm 1A continuous current is sustainable up to 125°C case temperature when mounted on a 5mm × 5mm copper pad.
Is SS110ALH suitable for automotive applications?
Yes, the SS110ALH is AEC-Q101 qualified and explicitly rated for automotive use. Its construction meets JESD201 Class 2 whisker resistance, moisture sensitivity level 1 (J-STD-020), and operates reliably from –55°C to +150°C. It is deployed in automotive LED lighting drivers, body control modules, and infotainment power supplies - confirmed by TSC's qualification report and application notes for SS110ALH.
What is the forward voltage of SS110ALH at 1A and 125°C?
The SS110ALH forward voltage is 0.60 V (typical) and 0.67 V (maximum) at 1A and 125°C, per electrical specifications table. This low VF at elevated temperature ensures stable efficiency and reduced thermal runaway risk in high-ambient applications - a key advantage over standard silicon rectifiers whose VF rises with temperature.
Does SS110ALH have a specified junction-to-ambient thermal resistance?
Yes, the SS110ALH has a junction-to-ambient thermal resistance (RθJA) of 78°C/W, measured on a standard 5mm × 5mm copper pad PCB per JEDEC JESD51-3. This value is critical for thermal design - for example, at 1A and 0.75V VF, power dissipation is 0.75W, resulting in ~58°C temperature rise above ambient, well within the +150°C TJ limit at 92°C ambient.
What packaging and reel quantity is offered for SS110ALH?
The SS110ALH is supplied in Thin SMA package on tape-and-reel format with 14,000 units per reel, as specified in the ordering information section. The reel complies with EIA-481 standards and supports high-speed automated placement. Lead finish is matte tin, solderable per J-STD-002, and the device carries marking code "110ALH" on the cathode side.
SS110ALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- 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:
- 830 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 100 V
- Capacitance @ Vr, F:
- 36pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS110ALH FAQ
1.How can I place an order for SS110ALH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS110ALH 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 SS110ALH reliable?
The price and inventory of SS110ALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS110ALH is usually 5 days.
3.What payment methods are accepted for SS110ALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS110ALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS110ALH?
SS110ALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS110ALH 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 SS110ALH?
For technical support, including SS110ALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS110ALH requirements.
6.How does Aetrix verify that SS110ALH is sourced from the original manufacturer or authorized distributors?
All SS110ALH 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 SS110ALH meets industry standards.
7.What is the process for return or replacement of SS110ALH?
All SS110ALH units undergo pre-shipment inspection (PSI). If there is an issue with SS110ALH, 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 SS110ALH part is unused and in its original packaging.
Return procedure for SS110ALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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