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Semtech Corporation SL24.TCT
- Part No.:
- SL24.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SL24.TCT.pdf
- Description:
- TVS DIODE 24VWM 55VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,245
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Product details
Overview
SL24.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), constant 27.5–28V clamping across 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance at 22V - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SL24.TCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability data across temperature and current, and validated alternatives for 22V bus protection where low-voltage overshoot control is critical.
Technical Context
The SL24.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with stable clamping performance, 130–600nA reverse leakage at 22V, and 25–27.9V breakdown voltage (It = 1mA). Its 175pF capacitance at 22V and 1MHz enables compatibility with high-speed interfaces when placed upstream of signal conditioning stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - supports nominal USB PD bus and industrial 24V rail inputs without leakage or conduction during normal operation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - maintains safe margin below 30V-rated controller IC damage thresholds across full surge range. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD endpoints. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external staging. |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise under high di/dt transients, enabling robust protection for low-impedance power rails. |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with DC-coupled 22V bus protection; requires placement upstream of high-speed signal paths. |
| Operating Temperature | –40°C to +125°C - sustains clamping stability and leakage performance across extended industrial and automotive ambient ranges. |
Pinout & Package
SL24.TCT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six terminals. The compact footprint enables placement directly at connectors with minimal PCB area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current; all three must be connected via low-inductance paths to maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch IN); parallel connection ensures uniform current sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based clamping architecture | Delivers flat 27.5–28V clamping from 24A to 40A - eliminates voltage runaway seen in TVS diodes under increasing surge current. |
| Temperature-stable clamping | Clamping voltage varies <±0.5V from –40°C to +125°C - enables reliable protection without derating in thermally demanding enclosures. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - minimizes IR drop during surge, preserving downstream voltage integrity. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz & 5kHz bursts) - protects against repetitive fast transients in motor drives and PLC I/O modules. |
| UL 94V-0 molding compound | Ensures flame-retardant housing compliance for industrial and medical equipment safety certifications. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed between connector and PD controller or load switch. Use Value: Maintains 27.5–28V clamping at 40A while operating up to +125°C - prevents controller latch-up or gate oxide damage during field surges. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: High-energy transient shunt positioned before the load switch's internal FET to limit drain-source overvoltage. Use Value: Clamps below 28V across full temperature and current range - avoids FET avalanche failure and extends system uptime in harsh environments. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways and edge AI accelerators subjected to ESD during field servicing. IC Role / Device Role / Timing Role: Standalone EOS protector for unregulated DC inputs feeding PMICs or buck controllers. Use Value: Delivers ±30kV ESD immunity and 40A surge handling in 1.6×1.6mm footprint - reduces BOM count vs. multi-stage TVS+MOV solutions. |
Use Scenario: Protecting 22V backup or auxiliary rails in enterprise SSDs and NVMe storage modules exposed to hot-plug transients and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-power suppressor on power delivery path to NAND controller or DRAM power domain. Use Value: Prevents latch-up or burnout in 28nm/16nm controller ICs by limiting transient overvoltage to ≤28V with sub-20mΩ surge path impedance. |
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 | Identical electrical specs, same DFN-6 package, identical marking code "T22" - direct Semtech-manufactured variant with tape-and-reel packaging (3,000 pcs/reel). | No functional difference; used interchangeably in production for USB-C and industrial designs requiring certified traceability. | Select TDS2211P.C when sourcing from authorized Semtech distributors with full lot traceability and standard reel packaging. |
| uClamp2411ZA | 24V working voltage, ±30kV ESD, but lower 20A IPP rating and higher 33V clamping at 20A - uses silicon avalanche structure, not FET-based clamping. | Suitable for CC/SBU lines in USB-C, not VBUS; lacks flat-clamp behavior and temperature stability of SL24.TCT. | Choose uClamp2411ZA only for low-current, low-capacitance (<0.5pF) signal-line protection - not a replacement for SL24.TCT on power rails. |
Compared with TDS2211P.C, SL24.TCT shares identical performance and form factor but may differ in packaging or traceability documentation; versus uClamp2411ZA, SL24.TCT provides superior 40A surge handling and flat clamping essential for 22V power bus protection.
Availability
SL24.TCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power buses requiring stable component supply with guaranteed long-term availability and full compliance documentation.
Supply support for SL24.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, and signal integrity.
SL24.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy EOS applications where flat clamping and temperature stability are mandatory.
FAQ
What is the maximum clamping voltage of SL24.TCT at 40A surge current?
The SL24.TCT clamps at 27.6–28V under 40A peak pulse current (8/20μs + 1.2/50μs combination waveform, RS = 2Ω), as specified in its electrical characteristics table. This value remains stable across –40°C to +125°C, distinguishing it from conventional TVS devices whose clamping rises with current and temperature. The SL24.TCT achieves this via its FET-based architecture and low 20mΩ dynamic resistance.
Can SL24.TCT be used for USB Type-C VBUS protection in 20V PD applications?
Yes - SL24.TCT is explicitly validated for USB Type-C VBUS protection in up to 20V PD systems. Its 22V working voltage, 27.5–28V clamping, and ±30kV ESD rating meet USB-IF and IEC 61000-4-2 requirements. The device is recommended in Semtech's reference design for Type-C connectors, placed directly at the receptacle to minimize trace inductance before the PD controller or load switch.
What is the pin configuration and PCB layout requirement for SL24.TCT?
SL24.TCT uses a 6-pin DFN package: Pins 1–3 are GND, Pins 4–6 are IN. All GND pins must connect to a solid ground plane using multiple vias; all IN pins must tie together with a short, wide trace to the protected line. Placement within 2mm of the connector is required to limit coupling. Layout guidelines specify no thermal pad - energy is dissipated internally via the FET channel.
How does SL24.TCT differ from standard TVS diodes in transient response?
Unlike standard TVS diodes - which exhibit linear clamping rise (VC = VBR + IPP × RDYN) - SL24.TCT uses a triggered FET to achieve near-constant clamping (27.5–28V) from 24A to 40A. Its dynamic resistance drops under surge, yielding lower voltage overshoot and stable performance across temperature. This eliminates the need for over-spec'ing IPP to meet clamping targets.
Is SL24.TCT compliant with RoHS, REACH, and UL 94V-0 standards?
Yes - SL24.TCT is Pb-free, halogen-free, and RoHS/WEEE compliant. Its molding compound carries UL 94V-0 flammability rating, and lead finish is fully lead-free. These certifications are confirmed in the mechanical characteristics section of the official Semtech datasheet Rev 2.5, making SL24.TCT suitable for industrial, medical, and consumer products requiring full regulatory alignment.
SL24.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):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 55V
- 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
SL24.TCT FAQ
1.How can I place an order for SL24.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SL24.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 SL24.TCT reliable?
The price and inventory of SL24.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SL24.TCT is usually 5 days.
3.What payment methods are accepted for SL24.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SL24.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SL24.TCT?
SL24.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SL24.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 SL24.TCT?
For technical support, including SL24.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SL24.TCT requirements.
6.How does Aetrix verify that SL24.TCT is sourced from the original manufacturer or authorized distributors?
All SL24.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 SL24.TCT meets industry standards.
7.What is the process for return or replacement of SL24.TCT?
All SL24.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SL24.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 SL24.TCT part is unused and in its original packaging.
Return procedure for SL24.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SL24.TCT Tags
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Toshiba Semiconductor and Storage
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