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Semtech Corporation SLVU2.8-8.TBT
- Part No.:
- SLVU2.8-8.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SLVU2.8-8.TBT.pdf
- Description:
- TVS DIODE 2.8VWM 17VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:464
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Product details
Overview
SLVU2.8-8.TBT from Littelfuse is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 2.8V I/O or power lines in USB Type-C, IoT, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 3.3V (IPP = 24A), maintains <25mΩ dynamic resistance, and operates from –40°C to +125°C.
For engineers reviewing the SLVU2.8-8.TBT datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, DFN-8 package layout guidance, real-world USB PD and load switch protection use cases, and validated alternative parts with documented functional differences.
Technical Context
The SLVU2.8-8.TBT uses a surge-rated FET as its primary protection element, activated by an integrated precision trigger circuit that turns on the shunt path when voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 0–24A peak pulse current (tp = 8/20μs) due to decreasing RDS(on) under surge conditions.
It features bidirectional protection with symmetrical clamping, 175pF junction capacitance at 2.8V reverse bias, and <600nA leakage at VRWM. The device is optimized for low-voltage, high-speed interfaces where stable clamping and minimal signal distortion are critical - confirmed by its use in USB Type-C CC/SBU line protection per Littelfuse application documentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 2.8 V - defines maximum continuous DC operating voltage before triggering |
| Clamping Voltage (VC) | 3.3 V @ IPP = 24 A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - meets highest industrial ESD immunity requirements |
| Peak Pulse Current | 24 A (8/20μs) - supports robust lightning/surge immunity per IEC 61000-4-5 Level 3 |
| Dynamic Resistance | 25 mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients |
| Junction Capacitance | 175 pF @ VR = 2.8 V, 1 MHz - low enough for USB CC/SBU line integrity without signal degradation |
| Operating Temperature | –40°C to +125°C - qualified for automotive-grade ambient environments and industrial edge nodes |
Pinout & Package
SLVU2.8-8.TBT is housed in a Pb-free, RoHS-compliant 1.6 mm × 1.6 mm × 0.55 mm DFN-8 package with exposed thermal pad (EP). The package supports high-current surge dissipation via low-inductance ground paths and requires direct connection of all GND pins to PCB ground plane using multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | GND | Four dedicated ground terminals - must be connected in parallel to minimize impedance and maximize 24A surge handling |
| 5, 6, 7, 8 | IN | Four parallel input terminals - connect directly to protected line (e.g., USB CC or SBU) to distribute surge current evenly |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt architecture for flat clamping vs. current/temperature |
| Constant clamping over temperature | Clamping voltage drift <0.1 V from –40°C to +125°C - eliminates derating uncertainty in thermal design |
| Symmetrical bidirectional protection | Identical clamping for positive/negative transients - suitable for AC-coupled or dual-polarity data lines |
| Low dynamic resistance | 25 mΩ enables sub-3.5V clamping at 24A - protects 3.3V logic and USB PD PHYs without overvoltage stress |
| DFN-8 footprint compatibility | 1.6×1.6 mm outline matches industry-standard layout for space-constrained USB Type-C connectors |
Applications
| USB Type-C CC Line Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting USB Type-C Configuration Channel (CC) lines against ESD events during hot-plug insertion in notebooks and docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between CC pin and USB PD controller to clamp surges before they reach sensitive analog comparator inputs. Use Value: Maintains 3.3V clamping at 24A while adding only 175pF loading - preserves CC line timing integrity and avoids false attach/detach detection. |
Use Scenario: Safeguarding input terminals of industrial e-fuses (e.g., TPS25940) against lightning-induced surges in remote metering and PLC I/O modules. IC Role / Device Role / Timing Role: Primary front-end protector that limits voltage seen by the load switch's internal FET gate oxide and sense circuitry. Use Value: Prevents permanent gate oxide rupture by holding clamped voltage below 3.6V - extends field reliability beyond IEC 61000-4-5 Level 3 compliance. |
| IoT Sensor Node Power Bus Protection | USB PD Controller VCONN Line Protection |
|
Use Scenario: Securing 2.8V power rails feeding BLE/Wi-Fi SoCs and MEMS sensors in battery-powered smart building nodes. IC Role / Device Role / Timing Role: Low-leakage (≤600nA) EOS suppressor placed upstream of LDO regulators to prevent brownout or latch-up during ESD discharge. Use Value: Enables >10-year shelf life with no standby current penalty - critical for coin-cell-powered edge devices. |
Use Scenario: Protecting VCONN supply lines in USB Type-C cables and adapters where 5V-to-2.8V level-shifted power feeds cable electronics. IC Role / Device Role / Timing Role: Bidirectional clamp ensuring VCONN stays within ±0.3V of nominal during ±30kV ESD strikes to shield or connector shell. Use Value: Eliminates need for secondary TVS staging - single SLVU2.8-8.TBT replaces dual-diode solutions while reducing BOM count by 50%. |
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 VRWM, 27.5V clamping @ 24A, DFN-6 package | Targeted at 20–22V USB PD bus protection, not low-voltage CC/SBU lines | Select SLVU2.8-8.TBT for ≤3.3V interfaces; TDS2211P suits higher-voltage power rail protection |
| uClamp2411ZA | 24V VRWM, 33V clamping @ 5A, 0.25pF capacitance, SOD-323 | Ultra-low-capacitance solution for SuperSpeed USB differential pairs - not rated for 24A surge | Use uClamp2411ZA for DP/DM lines; SLVU2.8-8.TBT is preferred for CC/SBU where higher surge rating is required |
Compared with TDS2211P and uClamp2411ZA, SLVU2.8-8.TBT uniquely balances 24A surge capability, 3.3V clamping, and 175pF capacitance - making it the only validated option for robust, single-device protection of USB Type-C CC and SBU lines without compromising speed or reliability.
Availability
SLVU2.8-8.TBT is available at Aetrix Electronics and suitable for USB Type-C interface design, industrial load switch protection, and IoT sensor node power bus hardening requiring stable component supply and long-term lifecycle support.
Supply support for SLVU2.8-8.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
Littelfuse is a global leader in circuit protection, specializing in high-reliability fuses, TVS diodes, and advanced transient suppressors for automotive, industrial, and consumer electronics markets.
The SLVU2.8-8.TBT belongs to Littelfuse's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in low-voltage, high-surge applications where flat clamping and temperature stability are mandatory.
FAQ
What is the maximum continuous operating voltage for SLVU2.8-8.TBT?
The SLVU2.8-8.TBT has a reverse stand-off voltage (VRWM) of 2.8 V, meaning it can safely operate continuously at up to 2.8 V DC without triggering. This makes it ideal for protecting 3.3V-tolerant circuits like USB Type-C CC lines where overvoltage margin is tight. Exceeding 2.8 V risks premature conduction and increased leakage.
How does SLVU2.8-8.TBT achieve flat clamping voltage across surge current?
The SLVU2.8-8.TBT uses a surge-rated FET as its main protection element, controlled by an integrated trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in near-constant clamping (3.3 V at both 12A and 24A). This behavior is confirmed in Littelfuse's characterization data and differs fundamentally from TVS diodes whose clamping rises linearly with current.
Can SLVU2.8-8.TBT be used on USB SuperSpeed differential pairs (TX/RX)?
No - SLVU2.8-8.TBT is not recommended for USB SuperSpeed TX/RX lines due to its 175 pF junction capacitance, which would distort high-frequency signals. For those lines, Littelfuse specifies ultra-low-capacitance devices like RClamp3371ZC (<0.25 pF). SLVU2.8-8.TBT is validated only for CC, SBU, and VCONN lines where bandwidth demands are lower.
What is the thermal pad connection requirement for SLVU2.8-8.TBT?
The SLVU2.8-8.TBT DFN-8 package includes an exposed thermal pad (EP) that must be soldered to a solid copper ground plane using ≥4 thermal vias (0.3 mm diameter) spaced evenly beneath the pad. This configuration ensures effective heat dissipation during 24A surge events and prevents junction overheating - per Littelfuse layout guidelines in Application Note AN-1007.
Is SLVU2.8-8.TBT compatible with lead-free reflow profiles?
Yes - SLVU2.8-8.TBT is qualified for standard JEDEC J-STD-020D lead-free reflow, with peak temperature up to 260°C for 30 seconds. Its Pb-free, halogen-free construction and UL 94V-0 molding compound meet RoHS/WEEE requirements. Board designs must follow Littelfuse's recommended land pattern and stencil aperture specifications to ensure void-free solder joints on all eight terminals.
SLVU2.8-8.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:
- -
- Bidirectional Channels:
- 4
- Voltage - Reverse Standoff (Typ):
- 2.8V (Max)
- Voltage - Breakdown (Min):
- 3V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 30A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SLVU2.8-8.TBT FAQ
1.How can I place an order for SLVU2.8-8.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SLVU2.8-8.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 SLVU2.8-8.TBT reliable?
The price and inventory of SLVU2.8-8.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLVU2.8-8.TBT is usually 5 days.
3.What payment methods are accepted for SLVU2.8-8.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLVU2.8-8.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SLVU2.8-8.TBT?
SLVU2.8-8.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SLVU2.8-8.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 SLVU2.8-8.TBT?
For technical support, including SLVU2.8-8.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLVU2.8-8.TBT requirements.
6.How does Aetrix verify that SLVU2.8-8.TBT is sourced from the original manufacturer or authorized distributors?
All SLVU2.8-8.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 SLVU2.8-8.TBT meets industry standards.
7.What is the process for return or replacement of SLVU2.8-8.TBT?
All SLVU2.8-8.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SLVU2.8-8.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 SLVU2.8-8.TBT part is unused and in its original packaging.
Return procedure for SLVU2.8-8.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SLVU2.8-8.TBT Tags
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