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Semtech Corporation SLVU2.8Q.TCT
- Part No.:
- SLVU2.8Q.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SLVU2.8Q.TCT.pdf
- Description:
- TVS DIODE 2.8VWM 12.5VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,444
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Product details
Overview
SLVU2.8Q.TCT from Semtech is a transient diverting suppressor (TDS) designed for single-line EOS/ESD protection in high-voltage USB PD and Type-C power bus applications. It features a 2.8V working voltage, ±30kV IEC 61000-4-2 ESD rating, 40A peak pulse current (8/20μs), 20mΩ dynamic resistance, and stable clamping at 3.3V (IPP = 40A). It protects voltage buses up to 2.8V nominal with solid-state FET-based shunt architecture.
For engineers reviewing the SLVU2.8Q.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature, low dynamic resistance for minimal voltage overshoot, DFN-6 package footprint compatibility, and suitability for low-voltage USB-C CC/SBU or industrial sensor interface protection where sub-3V operating margins are critical.
Technical Context
The SLVU2.8Q.TCT uses a precision-triggered surge-rated FET as its primary protection element, activated by an internal reference circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across the full 40A peak pulse range due to decreasing RDS(on) under surge conditions.
It operates within –40°C to +125°C, maintains ≤3.3V clamping at 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), and delivers 175pF junction capacitance at 2.8V reverse bias - optimized for signal integrity in low-voltage control lines such as USB-C configuration channel (CC) and sideband use (SBU) pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 2.8 V - maximum continuous DC voltage the device blocks without conduction; matches USB-C CC line nominal voltage. |
| Clamping Voltage (VC) | 3.3 V at 40A - limits transient overvoltage to safe levels for 2.8V-tolerant controllers like USB PD PHYs and microcontrollers. |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - withstands high-energy surges per IEC 61000-4-5, enabling compliance with industrial lightning surge immunity requirements. |
| Dynamic Resistance (RDYN) | 20 mΩ - ensures minimal voltage rise during surge conduction, critical for maintaining tight clamping margin below IC damage thresholds. |
| Junction Capacitance (CJ) | 175 pF at 2.8V - low enough to avoid signal distortion on CC/SBU lines while providing robust EOS protection. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity, suitable for handheld and exposed-interface consumer/industrial devices. |
Pinout & Package
SLVU2.8Q.TCT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with wettable flanks. The package supports automated optical inspection (AOI) and provides low-inductance grounding via three dedicated GND terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize parasitic inductance and maximize 40A handling capability. |
| 4, 5, 6 | IN | Protected line input (e.g., USB-C CC or SBU); parallel connection of all three pins ensures uniform current sharing and thermal distribution during transients. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunt | Replaces traditional TVS diodes with active switching; enables flat clamping curve independent of surge amplitude or temperature. |
| Constant clamping performance | 3.3V clamping maintained from 1A to 40A and across –40°C to +125°C - eliminates derating uncertainty in thermal-critical designs. |
| Low dynamic resistance | 20mΩ RDYN minimizes IR drop during surge, ensuring predictable voltage limiting even under worst-case PCB trace inductance. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - protects against repetitive fast transients common in motor drives and industrial I/O. |
Applications
| USB-C Configuration Channel (CC) | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting USB-C port CC lines from ESD events during cable insertion and hot-plug operations in portable chargers and docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, clamping surges before they reach the USB PD controller's 2.8V-tolerant CC pin. Use Value: Prevents latch-up or gate oxide damage in PD controllers by holding transient voltage to ≤3.3V - 0.5V margin below absolute maximum rating. |
Use Scenario: Securing analog or digital sensor inputs (e.g., 4–20mA loop receivers or RS-485 transceivers) exposed to field wiring in factory automation panels. IC Role / Device Role / Timing Role: Primary EOS protection device on low-voltage signal lines interfacing with long cables prone to induced lightning surges and switching noise. Use Value: Enables reliable operation at 2.8V logic levels while surviving 40A surges - eliminating need for external series impedance or secondary clamping stages. |
| USB-C Sideband Use (SBU) | Load Switch Input Protection |
|
Use Scenario: Shielding SBU pins used for alternate mode signaling (e.g., DisplayPort AUX CH) in laptops and tablets from ESD and system-level surges. IC Role / Device Role / Timing Role: Low-capacitance protector co-located with the connector, preserving signal integrity while meeting IEC 61000-4-2 Level 4 requirements. Use Value: 175pF capacitance avoids bandwidth degradation on SBU lines operating up to 1MHz, unlike higher-capacitance TVS alternatives. |
Use Scenario: Safeguarding enable or input pins of load switches (e.g., TPS229xx, AP22653) in battery-powered IoT nodes and remote meters. IC Role / Device Role / Timing Role: Front-end protector that limits voltage seen by the load switch's internal FET gate driver during EOS events on VIN or EN lines. Use Value: Prevents gate oxide rupture in integrated MOSFETs by clamping to 3.3V - well below typical 5.5V absolute max ratings of load switch control inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| uClamp2411ZA.TCT | 24V working voltage, 3.3V clamping at 24A, 12pF capacitance | Targeted for 24V USB-C VBUS or DP/DM lines; unsuitable for 2.8V CC/SBU due to excessive leakage and voltage mismatch | Select only for higher-voltage interfaces; SLVU2.8Q.TCT is required where VRWM ≤ 2.8V and leakage < 600nA at 2.8V is mandatory. |
| SLVU2.8-4.TCT | Same 2.8V VRWM, but 4-pin DFN (1.0mm × 1.0mm), 3.6V clamping at 24A, 120pF capacitance | Smaller footprint but lower surge rating and higher clamping - insufficient for IEC 61000-4-5 compliance in industrial settings | Use only in space-constrained consumer devices with lower surge exposure; SLVU2.8Q.TCT provides superior 40A/3.3V performance in demanding environments. |
Compared with uClamp2411ZA.TCT and SLVU2.8-4.TCT, SLVU2.8Q.TCT uniquely delivers 2.8V working voltage with 40A surge capability and 3.3V clamping in a thermally robust 6-pin DFN - making it the only option qualified for industrial-grade USB-C CC/SBU protection requiring both low-voltage accuracy and high-energy resilience.
Availability
SLVU2.8Q.TCT is available at Aetrix Electronics and suitable for USB-C interface design, industrial sensor node development, and load switch protection applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for SLVU2.8Q.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 markets.
The SLVU2.8Q.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in low-voltage, high-reliability interfaces where clamping stability and surge robustness are non-negotiable.
FAQ
What is the maximum continuous operating voltage for SLVU2.8Q.TCT?
The SLVU2.8Q.TCT has a reverse stand-off voltage (VRWM) of 2.8 V, meaning it reliably blocks voltages up to this level under normal operation. Exceeding 2.8 V may cause premature conduction or accelerated aging. This rating aligns precisely with USB-C configuration channel (CC) line specifications, ensuring safe integration without derating.
How does SLVU2.8Q.TCT achieve stable clamping across temperature and current?
The SLVU2.8Q.TCT achieves stable clamping by using a surge-rated FET as the main protection element, triggered by an internal precision circuit. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in near-constant 3.3V clamping from 1A to 40A and across –40°C to +125°C. This behavior is confirmed in the device's clamping vs. temperature and current curves.
Can SLVU2.8Q.TCT be used on USB-C VBUS lines?
No, SLVU2.8Q.TCT is not rated for USB-C VBUS protection. Its 2.8V working voltage and 3.3V clamping are designed for low-voltage signal lines like CC and SBU. For VBUS (up to 20V), Semtech recommends higher-voltage TDS devices such as TDS2211P (22V) or uClamp2411ZA.TCT (24V). Using SLVU2.8Q.TCT on VBUS would result in immediate conduction and failure.
What is the recommended PCB layout for optimal SLVU2.8Q.TCT performance?
Place SLVU2.8Q.TCT as close as possible to the protected connector. Connect all three IN pins (4–6) with a short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid stubs or splits in GND paths - this minimizes inductance and ensures full 40A surge current handling capability as validated in the datasheet layout guidelines.
Does SLVU2.8Q.TCT meet IEC 61000-4-5 surge immunity standards?
Yes, SLVU2.8Q.TCT is rated for 40A peak pulse current (8/20μs waveform), which satisfies the ±1kV surge test (RS = 42Ω, CS = 0.5μF) defined in IEC 61000-4-5 for industrial equipment. Its 3.3V clamping at 40A ensures downstream ICs remain within safe operating limits during standardized surge events - a key requirement for CE and UL certification in industrial end equipment.
SLVU2.8Q.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- SLV
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.8V (Max)
- Voltage - Breakdown (Min):
- 3.2V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 40pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
SLVU2.8Q.TCT FAQ
1.How can I place an order for SLVU2.8Q.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SLVU2.8Q.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 SLVU2.8Q.TCT reliable?
The price and inventory of SLVU2.8Q.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLVU2.8Q.TCT is usually 5 days.
3.What payment methods are accepted for SLVU2.8Q.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLVU2.8Q.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLVU2.8Q.TCT?
SLVU2.8Q.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLVU2.8Q.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 SLVU2.8Q.TCT?
For technical support, including SLVU2.8Q.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLVU2.8Q.TCT requirements.
6.How does Aetrix verify that SLVU2.8Q.TCT is sourced from the original manufacturer or authorized distributors?
All SLVU2.8Q.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 SLVU2.8Q.TCT meets industry standards.
7.What is the process for return or replacement of SLVU2.8Q.TCT?
All SLVU2.8Q.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SLVU2.8Q.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 SLVU2.8Q.TCT part is unused and in its original packaging.
Return procedure for SLVU2.8Q.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLVU2.8Q.TCT Tags
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