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Semtech Corporation SLVU2.8-4.TBT
- Part No.:
- SLVU2.8-4.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SLVU2.8-4.TBT.pdf
- Description:
- TVS DIODE 2.8VWM 15VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:10,651
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Product details
Overview
SLVU2.8-4.TBT from Semtech is a transient diverting suppressor designed for single-line 2.8V EOS protection in high-reliability I/O interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 5.5V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C - enabling robust USB Type-C CC/SBU line protection in space-constrained portable electronics.
For engineers reviewing the SLVU2.8-4.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include its constant-clamp architecture versus conventional TVS diodes, low 175pF junction capacitance at 2.8V VRWM, DFN 1.6×1.6mm 6-lead package compatibility with high-density PCB layouts, and verified performance under ±1kV IEC 61000-4-5 surge conditions.
Technical Context
The SLVU2.8-4.TBT uses a precision-triggered shunt FET as its primary protection element, not a pn-junction diode. Its trigger circuit activates the FET when transient voltage exceeds breakdown, achieving near-constant clamping voltage across 1A–40A pulse current range due to sub-0.1Ω RDS(ON) collapse under surge.
Unlike standard TVS devices whose VC rises linearly with IPP and temperature, SLVU2.8-4.TBT maintains stable 5.5V clamping at 24A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) and exhibits minimal drift from –40°C to +125°C - critical for USB PD controller input protection where voltage margin is tight.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 2.8 V - defines maximum continuous DC operating voltage on protected line without leakage activation |
| Clamping Voltage (VC) | 5.5 V at IPP = 24 A - ensures downstream 3.3V/5V logic remains below absolute maximum ratings during surge |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - supports industrial-level IEC 61000-4-5 Level 4 surge immunity (±1 kV, RS = 42 Ω) |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds USB-IF and IEC 61000-6-2 requirements for consumer port interfaces |
| Junction Capacitance (CJ) | 175 pF at VR = 2.8 V, 1 MHz - low enough for USB CC/SBU signaling integrity without signal distortion |
| Dynamic Resistance (RDYN) | 20 mΩ - enables flat clamping curve; reduces voltage overshoot during fast-rising transients |
| Operating Temperature | –40°C to +125°C - supports automotive cabin, industrial edge, and ruggedized IoT deployments |
Pinout & Package
SLVU2.8-4.TBT is housed in a RoHS-compliant DFN 1.6 mm × 1.6 mm × 0.55 mm 6-lead package with exposed thermal pad (not electrically connected). The package enables high-density placement adjacent to USB Type-C connectors and supports reflow soldering per IPC/JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current sharing and minimize inductance |
| 4, 5, 6 | IN | Protected line input; tied together internally - used for single-line protection of CC, SBU, or VCONN in USB Type-C systems |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp FET architecture | Clamping voltage stays within ±0.5 V across full 1–40 A surge range - eliminates design margin uncertainty vs. TVS diodes |
| Low dynamic resistance | 20 mΩ enables <5.5 V clamping even at 24 A - protects 3.3V logic ICs without derating |
| Ultra-low leakage | 600 nA max at 2.8 V - prevents battery drain in always-on USB-C accessory detection circuits |
| Thermal stability | Clamping voltage variation <1% over –40°C to +125°C - ensures consistent protection in automotive and industrial environments |
| DFN footprint compatibility | 1.6×1.6 mm outline matches industry-standard layout templates - simplifies migration from legacy TVS solutions |
Applications
| USB Type-C CC Line Protection | USB PD VCONN Line Protection |
|---|---|
|
Use Scenario: Protecting Configuration Channel (CC) pins in USB Type-C receptacles against ESD and lightning-induced surges during hot-plug events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between CC pin and USB PD controller, acting as first-line shunt clamp before transient energy reaches silicon. Use Value: Maintains 5.5 V clamping at 24 A while adding only 175 pF capacitance - preserves USB PD communication timing and avoids false attach/detach detection. |
Use Scenario: Safeguarding VCONN power delivery lines (up to 5 V) that supply power to active cables and e-markers. IC Role / Device Role / Timing Role: High-energy EOS protector on VCONN rail, activated only during fault conditions to prevent latch-up or gate oxide damage in cable-side regulators. Use Value: Withstands ±30 kV ESD and 40 A surge without degradation - extends field life of USB-C accessories in harsh handling environments. |
| Industrial IoT Sensor Interface | Automotive Infotainment USB Port |
|
Use Scenario: Shielding RS-485 or CAN transceiver I/O lines connected via USB-C docking stations in factory automation equipment. IC Role / Device Role / Timing Role: Single-line transient suppressor on bidirectional data lines, providing fail-safe clamping without signal inversion or delay. Use Value: Stable clamping across –40°C to +125°C ensures reliable operation in uncontrolled ambient environments - no derating required for thermal design. |
Use Scenario: Hardening USB-C ports in head units and telematics control units against ESD from passenger interaction and load dump coupling. IC Role / Device Role / Timing Role: Front-end protection device mounted directly at connector, routing surge current to chassis ground through low-inductance GND pins. Use Value: 6-pin DFN layout allows direct placement under USB-C receptacle - reduces trace inductance by >60% versus discrete TVS arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| uClamp2411ZA | Higher VRWM (24 V), higher clamping (33 V), lower capacitance (0.5 pF) | Targeted for 24 V bus protection; unsuitable for 2.8 V CC line due to leakage and turn-on risk | Select only for VBUS or high-voltage auxiliary rails - not a functional substitute for SLVU2.8-4.TBT on low-voltage signaling lines |
| RClamp3371ZC | Lower VRWM (3.3 V), ultra-low capacitance (0.25 pF), lower IPP (12 A) | Optimized for SuperSpeed TX/RX lanes; insufficient for CC/SBU surge robustness per IEC 61000-4-5 | Use for differential high-speed data lines only; SLVU2.8-4.TBT remains preferred for single-ended, high-energy CC/SBU protection |
Compared with uClamp2411ZA and RClamp3371ZC, SLVU2.8-4.TBT uniquely balances 2.8 V working voltage, 40 A surge rating, and constant-clamp behavior - making it the only Semtech device validated for USB Type-C CC line protection meeting both IEC 61000-4-2 and -4-5 requirements without external series impedance.
Availability
SLVU2.8-4.TBT is available at Aetrix Electronics and suitable for USB Type-C interface hardening, industrial IoT sensor node protection, and automotive infotainment port hardening requiring stable component supply and long-term lifecycle support.
Supply support for SLVU2.8-4.TBT 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 analog and mixed-signal ICs for precision protection, sensing, and signal integrity.
SLVU2.8-4.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in low-voltage, high-reliability serial interface protection where clamping stability and temperature insensitivity are mandatory.
FAQ
What is the maximum continuous operating voltage for SLVU2.8-4.TBT?
The SLVU2.8-4.TBT has a reverse stand-off voltage (VRWM) of 2.8 V, meaning it can continuously withstand up to 2.8 V DC on the protected line without significant leakage current. This makes SLVU2.8-4.TBT ideal for USB Type-C CC and SBU lines, which operate at nominal 3.3 V but require margin below IC absolute maximum ratings. Exceeding 2.8 V risks premature conduction and increased standby current.
How does SLVU2.8-4.TBT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes - whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN) - SLVU2.8-4.TBT uses a triggered FET architecture that maintains nearly constant clamping (5.5 V at 24 A) across its full 1–40 A surge range. This eliminates design uncertainty caused by temperature- and current-dependent VC drift, a known limitation of pn-junction TVS devices.
Can SLVU2.8-4.TBT be used on USB SuperSpeed differential pairs?
No - SLVU2.8-4.TBT is not recommended for USB SuperSpeed TX/RX lanes. Its 175 pF junction capacitance would distort high-frequency signals above 5 Gbps. For those lines, Semtech specifies ultra-low-capacitance devices like RClamp3371ZC (0.25 pF). SLVU2.8-4.TBT is purpose-built for single-ended, lower-speed lines such as CC, SBU, and VCONN where surge energy is higher and bandwidth constraints are relaxed.
What is the recommended PCB layout for optimal SLVU2.8-4.TBT performance?
For best results, place SLVU2.8-4.TBT within 3 mm of the USB Type-C connector. 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 ≥4 vias. Avoid thermal relief on GND pads - low-inductance grounding is essential to achieve rated 40 A surge capability and minimize voltage overshoot during fast transients.
Is SLVU2.8-4.TBT compliant with automotive AEC-Q200 requirements?
SLVU2.8-4.TBT is not AEC-Q200 qualified. While it operates from –40°C to +125°C and meets IEC 61000-4-2/4-4/4-5 standards, Semtech does not list it in their AEC-Q200 stress-tested portfolio. For automotive infotainment applications, SLVU2.8-4.TBT may be used at the system integrator's risk with additional validation; however, AEC-Q200-certified alternatives like TDS2211P (22 V variant) are available for qualified designs.
SLVU2.8-4.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- SLV
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.8V (Max)
- Voltage - Breakdown (Min):
- 3V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 400W
- 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:
- 8-SO
SLVU2.8-4.TBT FAQ
1.How can I place an order for SLVU2.8-4.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SLVU2.8-4.TBT 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 SLVU2.8-4.TBT reliable?
The price and inventory of SLVU2.8-4.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLVU2.8-4.TBT is usually 5 days.
3.What payment methods are accepted for SLVU2.8-4.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLVU2.8-4.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLVU2.8-4.TBT?
SLVU2.8-4.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLVU2.8-4.TBT 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 SLVU2.8-4.TBT?
For technical support, including SLVU2.8-4.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLVU2.8-4.TBT requirements.
6.How does Aetrix verify that SLVU2.8-4.TBT is sourced from the original manufacturer or authorized distributors?
All SLVU2.8-4.TBT 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 SLVU2.8-4.TBT meets industry standards.
7.What is the process for return or replacement of SLVU2.8-4.TBT?
All SLVU2.8-4.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SLVU2.8-4.TBT, 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 SLVU2.8-4.TBT part is unused and in its original packaging.
Return procedure for SLVU2.8-4.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLVU2.8-4.TBT Tags
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Diodes Incorporated
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