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Semtech Corporation SLVU2.8.TCT
- Part No.:
- SLVU2.8.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SLVU2.8.TCT.pdf
- Description:
- TVS DIODE 2.8VWM 12.5VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:11,568
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Product details
Overview
SLVU2.8.TCT from Semtech is a transient diverting suppressor designed for single-line EOS/ESD protection in 2.8V I/O interfaces. It delivers ±30kV IEC 61000-4-2 contact/air ESD immunity, clamps at 5.5V (IPP = 24A), and features 175pF junction capacitance - enabling robust protection for high-speed USB 2.0, HDMI, and industrial sensor interfaces without signal integrity degradation.
For engineers reviewing the SLVU2.8.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include its constant-clamp architecture across temperature, ultra-low dynamic resistance (20mΩ), DFN-6 package footprint compatibility with space-constrained PCBs, and suitability for 2.8V rail protection where traditional TVS diodes exhibit rising clamping voltage under surge stress.
Technical Context
The SLVU2.8.TCT uses a surge-rated FET as the primary shunt element, activated by an integrated precision trigger circuit that responds to overvoltage transients above its breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains stable across 24–40A peak pulse current (8/20μs) and −40°C to +125°C operating temperature due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 2.8V, breakdown voltage of 3.3V (typ.), and forward voltage of 0.5V (at 1mA). Its functional topology isolates protected lines (pins 4–6) from ground (pins 1–3), enabling low-inductance layout with all three input pins paralleled and all three GND pins tied directly to thermal mass or ground plane via multiple vias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 2.8V - matches nominal supply of low-voltage I/O rails including USB 2.0 PHYs and sensor interfaces |
| Clamping Voltage (IPP = 24A) | 5.5V - stays below 6V damage threshold of most 3.3V/2.8V logic ICs during surge events |
| ESD Withstand | ±30kV (IEC 61000-4-2 contact/air) - exceeds Level 4 industrial immunity requirements |
| Junction Capacitance | 175pF @ 2.8V, 1MHz - compatible with USB 2.0 (480Mbps) and industrial serial buses without signal distortion |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 3 surge immunity for industrial equipment |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise under high di/dt transients, critical for fast-rising ESD pulses |
| Operating Temperature | −40°C to +125°C - supports deployment in automotive cabin modules and industrial edge controllers |
Pinout & Package
SLVU2.8.TCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. The compact footprint enables placement adjacent to connectors on dense PCBs while maintaining thermal performance without thermal pad requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Low-inductance return path for surge current; all three must be connected to minimize impedance and maximize 40A handling |
| Pins 4, 5, 6 | Input (IN) | Parallel-connected protected line interface; ties directly to I/O trace near connector to limit coupling to adjacent nets |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Maintains ≤5.5V clamping from 24A to 40A surge current - eliminates design margin inflation needed with TVS diodes |
| Temperature-stable clamping | Clamping voltage variation <0.3V across −40°C to +125°C - enables reliable protection in uncontrolled thermal environments |
| Ultra-low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - reduces IR drop and improves energy diversion efficiency |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - sustains repeated lightning-induced surges per IEC 61000-4-5 |
| Low leakage & capacitance | 600nA max reverse leakage at 2.8V and 175pF capacitance - preserves signal integrity on 480Mbps USB 2.0 links |
Applications
| USB 2.0 Interface Protection | HDMI DDC Channel Protection |
|---|---|
Use Scenario: Protecting USB 2.0 data lines (D+/D−) against ESD and EOS events in portable medical devices and industrial HMI panels. IC Role / Device Role / Timing Role: Transient diverting suppressor placed at USB connector entry point to shunt surge energy before reaching PHY IC. Use Value: 175pF capacitance avoids signal rise-time degradation at 480Mbps; 5.5V clamping prevents latch-up in 3.3V USB transceivers. |
Use Scenario: Securing HDMI Display Data Channel (DDC) lines (SCL/SDA) in digital signage and kiosk displays exposed to field ESD. IC Role / Device Role / Timing Role: Low-capacitance EOS protector on 3.3V I²C bus lines, co-located with HDMI connector. Use Value: Matches 2.8V working voltage of DDC pull-up networks; ±30kV ESD rating exceeds IEC 61000-4-2 Level 4 requirements. |
| Industrial Sensor Interface | IoT Device Power Input |
Use Scenario: Shielding analog/digital sensor outputs (e.g., RS-485, CAN FD stubs, or 4–20mA loop receivers) in factory automation nodes. IC Role / Device Role / Timing Role: Single-line transient suppressor on 2.8V–3.3V sensor supply or communication lines subject to cable discharge events. Use Value: Stable 5.5V clamping ensures downstream ADCs or microcontrollers remain within absolute maximum ratings during 40A surges. |
Use Scenario: Input protection for battery-powered IoT gateways accepting 3.3V/5V external power via micro-USB or barrel jack. IC Role / Device Role / Timing Role: Primary EOS clamp on VIN rail upstream of LDO or buck converter. Use Value: 2.8V working voltage aligns with low-dropout regulator inputs; 1120W peak power rating handles accidental 12V misconnection surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V working voltage, 27.5V clamping at 24A, DFN-6 | Targeted at 20–22V USB PD and load switch inputs | Select when protecting >15V rails; not suitable for 2.8V logic-level interfaces due to excessive leakage and clamping overshoot |
| SLVU2.8-4 | Same 2.8V VRWM, identical DFN-6 package, but rated for 20A IPP (vs. 40A) | Limited to lower-energy ESD-only scenarios; lacks full IEC 61000-4-5 surge compliance | Use only where cost sensitivity outweighs need for 40A surge margin; verify system-level surge test pass with actual board layout |
Compared with TDS2211P and SLVU2.8-4, SLVU2.8.TCT uniquely balances 2.8V rail compatibility, 40A surge capability, and 175pF capacitance - making it the only option among the three qualified for both USB 2.0 data line protection and industrial 2.8V sensor interface hardening without signal integrity compromise.
Availability
SLVU2.8.TCT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial sensor interface hardening, and IoT device power input safeguarding requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SLVU2.8.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 ICs for power management, protection, sensing, and wireless infrastructure.
SLVU2.8.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in low-voltage, high-speed interfaces where stable clamping and minimal capacitance are mandatory.
FAQ
What is the maximum clamping voltage of SLVU2.8.TCT at 40A surge current?
The SLVU2.8.TCT clamps at 5.5V (typ.) when subjected to a 40A peak pulse current (8/20μs waveform). This value is confirmed in the datasheet's Electrical Characteristics table under "Clamping Voltage (VC)" with IPP = 40A condition. Its constant-clamp architecture ensures this voltage remains stable across temperature and current range - unlike standard TVS diodes whose clamping rises linearly with current.
Can SLVU2.8.TCT be used on USB 2.0 D+ and D− lines without degrading signal integrity?
Yes, SLVU2.8.TCT is specifically suited for USB 2.0 data lines due to its 175pF junction capacitance at 2.8V and 1MHz, which introduces negligible rise-time distortion at 480Mbps. Its low dynamic resistance (20mΩ) and symmetrical bidirectional clamping ensure balanced differential signaling integrity during ESD events - validated in Semtech's application note AN-1122 for high-speed interface protection.
How does SLVU2.8.TCT differ from standard TVS diodes in clamping behavior?
SLVU2.8.TCT uses a surge-rated FET triggered by an internal circuit, resulting in near-constant clamping voltage (5.5V) across its full 24–40A surge range and −40°C to +125°C temperature span. Standard TVS diodes follow VC = VBR + IPP × RDYN, causing clamping to rise linearly with current and temperature - a limitation SLVU2.8.TCT eliminates through active shunt control.
What is the recommended PCB layout for SLVU2.8.TCT to achieve full 40A surge rating?
To achieve the full 40A (8/20μs) rating, all three IN pins (4, 5, 6) must be shorted together with a low-inductance trace to the protected line, and all three GND pins (1, 2, 3) must connect to a solid ground plane using ≥3 vias. Placement must be within 3mm of the connector, and no thermal pad is required - energy is dissipated in the FET channel, not the junction. Layout guidelines are detailed in Figure 7 of the SLVU2.8.TCT datasheet.
Is SLVU2.8.TCT compliant with RoHS and halogen-free standards?
Yes, SLVU2.8.TCT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and WEEE requirements. Its molding compound carries UL 94V-0 flammability rating, and lead finish is matte tin - verified in the Mechanical Characteristics section of the official Semtech datasheet Rev 2.5.
SLVU2.8.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):
- 3V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
SLVU2.8.TCT FAQ
1.How can I place an order for SLVU2.8.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SLVU2.8.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 SLVU2.8.TCT reliable?
The price and inventory of SLVU2.8.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLVU2.8.TCT is usually 5 days.
3.What payment methods are accepted for SLVU2.8.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLVU2.8.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLVU2.8.TCT?
SLVU2.8.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLVU2.8.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 SLVU2.8.TCT?
For technical support, including SLVU2.8.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLVU2.8.TCT requirements.
6.How does Aetrix verify that SLVU2.8.TCT is sourced from the original manufacturer or authorized distributors?
All SLVU2.8.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 SLVU2.8.TCT meets industry standards.
7.What is the process for return or replacement of SLVU2.8.TCT?
All SLVU2.8.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SLVU2.8.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 SLVU2.8.TCT part is unused and in its original packaging.
Return procedure for SLVU2.8.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLVU2.8.TCT Tags
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