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Semtech Corporation SL05.TCT
- Part No.:
- SL05.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SL05.TCT.pdf
- Description:
- TVS DIODE 5VWM 11VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:30,361
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Product details
Overview
SL05.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS/ESD protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces using solid-state FET-based shunt architecture.
For engineers reviewing the SL05.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal and layout performance, low 20mΩ dynamic resistance, and compatibility with 22V working voltage systems requiring robust EOS resilience in USB PD, IoT, and industrial equipment.
Technical Context
The SL05.TCT employs a precision-triggered surge-rated FET as its primary protection element, activated by an internal reference circuit when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing surge current.
It operates over –40°C to +125°C with <600nA reverse leakage at 22V, 175pF junction capacitance at 22V/1MHz, and UL 94V-0 mold compound. The device is rated for 1120W peak pulse power and meets IEC 61000-4-4 (±4kV EFT), -4-5 (±1kV/42Ω, 40A/8–20μs), and -4-2 (±30kV) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during worst-case surges |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 industrial surge immunity testing |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements for connector-facing protection |
| Dynamic Resistance | 20mΩ - enables low-voltage drop during conduction, minimizing energy dissipation in the device and reducing thermal stress |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent analog or control lines |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables ultra-compact placement near connectors with minimal PCB area and parasitic inductance |
Pinout & Package
SL05.TCT is housed in a Pb-free, RoHS-compliant DFN-6 package (1.6mm × 1.6mm × 0.55mm) with exposed thermal pad not required-energy is dissipated within the silicon FET structure. All six terminals are functional; no thermal pad or solder connection beyond the six perimeter leads is needed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current sharing and minimize inductance |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS or power rail); parallel connection ensures uniform current distribution and full 40A rating |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A surge, eliminating design margin inflation needed with conventional TVS devices |
| FET-based shunt topology | Replaces PN-junction TVS with low-RDS(on) MOSFET, shifting energy dissipation from junction to channel and improving thermal stability |
| Temperature-stable clamping | Clamps at ~27.5V from –40°C to +125°C - avoids derating or over-spec'ing for high-temp industrial environments |
| High EFT immunity | Withstands ±4kV burst (5/50ns, 5kHz & 100kHz) per IEC 61000-4-4 - critical for noisy factory-floor or motor-drive I/O protection |
| Low leakage & capacitance | ≤600nA IR at 22V and 175pF CJ enable use on always-on 22V rails without standby power penalty or signal coupling |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation, exposed to ESD from hot-plug and lightning-induced surges on long cables. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at the connector, clamping transients before they reach the PD controller or buck converter. Use Value: Maintains 27.5V clamping at 40A and 125°C - prevents overvoltage damage to 24V-tolerant PD controllers where traditional TVS would exceed 35V at same conditions. |
Use Scenario: Safeguarding input pins of industrial-grade load switches (e.g., HS2950P) used in remote meters, robotics, and programmable logic controllers. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Enables reliable operation under ±1kV/42Ω surge (IEC 61000-4-5) while keeping clamping below 28V - well under typical 30V absolute max ratings of e-fuse ICs. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power inputs on battery-backed wireless sensors and gateway modules deployed in uncontrolled environments. IC Role / Device Role / Timing Role: Single-component, low-footprint solution for EOS hardening of always-on supply rails interfacing with external connectors or antennas. Use Value: Delivers 40A surge handling in 1.6×1.6mm footprint - reduces board space by >60% vs. discrete TVS+RC alternatives while maintaining sub-28V clamping. |
Use Scenario: Protecting 22V backup power inputs in NVMe SSDs, enterprise HDDs, and RAID controllers against surges induced by shared chassis grounds or hot-swap events. IC Role / Device Role / Timing Role: High-reliability, low-capacitance protector placed between connector and DC-DC regulator input stage. Use Value: 175pF capacitance avoids resonance with downstream LC filters; stable clamping ensures backup power integrity during ESD events without brownout or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs, DFN-6 package, Semtech-marked variant with tape-and-reel packaging code "C" | No functional difference; intended for same USB PD, industrial, and storage applications | Select TDS2211P.C when sourcing from authorized Semtech channels requiring standard reel packaging and traceable date coding |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A, higher dynamic resistance (~0.5Ω), clamping rises with temperature and current | Suitable only for lower-energy transients (<15A) or ambient-temperature-limited designs where 35.5V clamping is acceptable | Choose SMAJ22A only if cost sensitivity outweighs clamping performance and thermal stability requirements - not recommended for USB PD or high-temp industrial use |
Compared with SL05.TCT, TDS2211P.C offers identical protection performance and form factor with certified packaging, while SMAJ22A trades clamping stability and surge capacity for lower unit cost - making SL05.TCT the optimal choice for designs demanding consistent 28V clamping across 40A and –40°C to +125°C.
Availability
SL05.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch interfaces, and IoT edge node power rails requiring stable component supply with guaranteed EOS resilience and compact DFN packaging.
Supply support for SL05.TCT 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.
The SL05.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy, high-reliability EOS protection applications where clamping stability and temperature independence are critical.
FAQ
What is the maximum continuous operating voltage for SL05.TCT?
The SL05.TCT has a reverse stand-off voltage (VRWM) of 22V, meaning it is rated for continuous DC operation up to 22V without significant leakage or degradation. This makes SL05.TCT suitable for protecting 20V USB PD VBUS lines and other 22V nominal power rails where sustained voltage exposure occurs.
Does SL05.TCT require a thermal pad or exposed copper on the PCB?
No, SL05.TCT does not require a thermal pad. Its DFN-6 package dissipates surge energy internally via the FET channel rather than through junction heating, and the datasheet explicitly states "no thermal pad is needed." Proper layout focuses on low-inductance GND connections using all three GND pins and multiple vias to the ground plane.
How does SL05.TCT differ from standard TVS diodes like SMAJ22A in clamping behavior?
SL05.TCT maintains a nearly constant clamping voltage (~27.5–28V) from 24A to 40A and across –40°C to +125°C, whereas SMAJ22A exhibits rising clamping (e.g., ~35.5V at 12.3A) that worsens with temperature. This difference stems from SL05.TCT's FET-based shunt architecture versus SMAJ22A's fixed-dynamic-resistance PN junction.
Can SL05.TCT be used to protect high-speed data lines such as USB SuperSpeed or PCIe?
No, SL05.TCT is not intended for high-speed data line protection. With 175pF junction capacitance, it is optimized for 22V power rails and low-frequency I/O lines. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF), which are designed to avoid signal integrity degradation.
What are the PCB layout best practices for SL05.TCT to achieve full 40A surge rating?
To achieve SL05.TCT's full 40A rating, connect all three IN pins (4, 5, 6) with a single short, wide trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Place SL05.TCT within 3mm of the connector to minimize inductance and prevent transient coupling into adjacent traces.
SL05.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- SL
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 11V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
SL05.TCT FAQ
1.How can I place an order for SL05.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SL05.TCT 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 SL05.TCT reliable?
The price and inventory of SL05.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SL05.TCT is usually 5 days.
3.What payment methods are accepted for SL05.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SL05.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SL05.TCT?
SL05.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SL05.TCT 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 SL05.TCT?
For technical support, including SL05.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SL05.TCT requirements.
6.How does Aetrix verify that SL05.TCT is sourced from the original manufacturer or authorized distributors?
All SL05.TCT 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 SL05.TCT meets industry standards.
7.What is the process for return or replacement of SL05.TCT?
All SL05.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SL05.TCT, 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 SL05.TCT part is unused and in its original packaging.
Return procedure for SL05.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SL05.TCT Tags
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