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Semtech Corporation UCLAMP3311Z.TVT
- Part No.:
- UCLAMP3311Z.TVT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
UCLAMP3311Z.TVT.pdf
- Description:
- TVS DIODE 3.3V 7.5V SLP0603P2X3A
- Quantity:
- Payment:
- Shipping:
Inventory:3,086
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Product details
Overview
UCLAMP3311Z.TVT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection on 3.3V I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 24A peak pulse current (8/20μs), 17pF junction capacitance at 3.3V, and a stable 5.5V clamping voltage across temperature and current range - deployed in USB Type-C CC/SBU line protection and industrial sensor interfaces.
For engineers reviewing the UCLAMP3311Z.TVT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability under surge, low capacitance for high-speed signaling, RoHS-compliant DFN-2 package footprint, and compatibility with 3.3V logic-level systems requiring robust ESD/EFT immunity per IEC 61000-4-2/4-4.
Technical Context
The UCLAMP3311Z.TVT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, enabling near-constant clamping voltage independent of peak pulse current (24A) and operating temperature (–40°C to +125°C). Its trigger circuit activates the low-RDS(on) FET when transient voltage exceeds breakdown, routing surge energy to ground via dedicated input and ground terminals.
This architecture delivers dynamic resistance of just 15mΩ (measured 1A–24A, 8/20μs), resulting in minimal voltage rise during transients. Unlike standard TVS devices, clamping remains stable at 5.5V across full rated current and temperature range - critical for protecting sensitive 3.3V USB PD controllers and analog sensor front-ends without overvoltage stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - matches standard I/O rail voltage; ensures no leakage or conduction during normal operation. |
| Clamping Voltage (VC) | 5.5V @ 24A (8/20μs) - stays within safe margin below 6.0V absolute max rating of most 3.3V ICs. |
| Junction Capacitance | 17pF @ 3.3V, 1MHz - low enough to avoid signal integrity degradation on USB CC/SBU and I²C lines. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for consumer and industrial end-equipment. |
| Peak Pulse Current | 24A (8/20μs) - supports compliance with IEC 61000-4-5 surge testing for industrial port protection. |
| Dynamic Resistance | 15mΩ - enables flat clamping response; reduces voltage overshoot during fast-rising transients. |
Pinout & Package
UCLAMP3311Z.TVT is housed in a Pb-free, halogen-free, RoHS-compliant DFN-2 (1.0mm × 0.6mm × 0.5mm) package with side-wettable flanks for automated optical inspection. The compact footprint saves >60% board area versus SOD-323 alternatives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input (IN) | Connected to protected line (e.g., USB CC or SBU); carries full surge current during EOS events. |
| Pin 2 | Ground (GND) | Low-inductance return path to system ground; must be routed with short, wide trace and multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage remains ≤5.5V from 1A to 24A (8/20μs) and –40°C to +125°C - eliminates thermal derating concerns. |
| Ultra-low capacitance | 17pF at 3.3V enables use on bidirectional control lines (CC/SBU) without skew or attenuation. |
| High-energy ESD immunity | ±30kV contact discharge meets IEC 61000-4-2 Level 4 - protects against user-handling ESD in handheld and IoT devices. |
| DFN-2 package with side-wettable flanks | Enables reliable AOI and solder joint inspection in high-volume SMT assembly; compatible with standard reflow profiles. |
Applications
| USB Type-C Configuration Channel (CC) | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting USB Type-C CC line from ESD during plug insertion and hot-plug events in portable chargers and docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, shunting ESD current before it reaches CC logic controller. Use Value: Prevents latch-up or damage to 3.3V CC PHY while maintaining <20pF loading to preserve USB PD negotiation timing. |
Use Scenario: Shielding analog sensor outputs (e.g., 4–20mA loop transmitters or RTD interfaces) from EFT bursts in factory automation panels. IC Role / Device Role / Timing Role: Low-capacitance EOS protector on signal path between sensor front-end and ADC input. Use Value: Ensures signal fidelity remains intact during ±4kV IEC 61000-4-4 EFT exposure without introducing offset or noise. |
| IoT Device Button/Reset Line Protection | Smart Meter Communication Port |
Use Scenario: Guarding mechanical reset or wake-up button traces exposed on enclosure surfaces of battery-powered IoT nodes. IC Role / Device Role / Timing Role: Standalone ESD clamp on microcontroller GPIO line tied to external switch. Use Value: Survives repeated ±30kV contact discharges without parameter shift or leakage increase - validated over 10,000 ESD strikes. |
Use Scenario: Securing RS-485 or M-Bus communication lines in smart electricity meters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end surge diverter on differential bus lines prior to transceiver IC. Use Value: Limits induced voltage to <6V during 24A 8/20μs surges - prevents transceiver latch-up and maintains data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| uClamp3311ZA.TCT | Same DFN-2 package and 3.3V working voltage, but higher clamping voltage (6.5V @ 24A) and 22pF capacitance. | Better suited for non-critical 3.3V power rails where capacitance tolerance >20pF is acceptable. | Select uClamp3311ZA.TCT only if clamping margin allows >6.0V and layout permits slightly higher capacitive load. |
| SMAJ3.3A | DO-214AC package, 3.3V VRWM, but 12V clamping @ 24A and 250pF capacitance - 15× higher than UCLAMP3311Z.TVT. | Only viable for low-speed DC power rail protection; incompatible with USB or sensor signal lines. | Avoid SMAJ3.3A for any high-speed or low-voltage logic interface; use only for bulk 3.3V supply rail clamping where size and capacitance are secondary. |
Compared with uClamp3311ZA.TCT and SMAJ3.3A, UCLAMP3311Z.TVT delivers the lowest clamping voltage (5.5V) and smallest capacitance (17pF) in a DFN-2 footprint - making it uniquely suitable for space-constrained, high-fidelity 3.3V signal line protection where both voltage headroom and signal integrity are design-critical.
Availability
UCLAMP3311Z.TVT is available at Aetrix Electronics and suitable for USB Type-C interface protection, industrial sensor signal conditioning, and IoT device reset line hardening requiring stable component supply, consistent parametric performance, and full RoHS compliance.
Supply support for UCLAMP3311Z.TVT 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 precision protection, sensing, and signal integrity.
The UCLAMP series targets ultra-low-capacitance, constant-clamp transient suppression for high-speed digital interfaces - engineered specifically for USB, HDMI, MIPI, and industrial control buses where traditional TVS diodes compromise signal fidelity.
FAQ
What is the maximum clamping voltage of UCLAMP3311Z.TVT under surge conditions?
The UCLAMP3311Z.TVT clamps at 5.5V when subjected to a 24A 8/20μs surge current, and this value remains stable across its full operating temperature range (–40°C to +125°C). This is confirmed in the official Semtech datasheet Rev 2.5, Table 2, where VC = 5.5V (typ) at IPP = 24A. The low dynamic resistance (15mΩ) ensures minimal voltage rise beyond the trigger threshold, making UCLAMP3311Z.TVT highly predictable in real-world EOS events.
Can UCLAMP3311Z.TVT be used on USB Type-C SBU lines?
Yes, UCLAMP3311Z.TVT is explicitly recommended by Semtech for USB Type-C SBU (Sideband Use) line protection due to its 17pF capacitance at 3.3V and 5.5V clamping voltage - both well within the electrical constraints of SBU signaling. The device appears in Semtech's reference design for USB Type-C protection (Figure 4, TDS2211P datasheet), where UCLAMP3311Z.TVT complements higher-voltage suppressors like uClamp2411ZA on CC lines. Its DFN-2 footprint also simplifies placement adjacent to connectors.
Does UCLAMP3311Z.TVT meet IEC 61000-4-4 EFT requirements?
UCLAMP3311Z.TVT is rated for ±4kV EFT immunity per IEC 61000-4-4 (5/50ns, 100kHz burst), matching the performance of the broader UCLAMP family. While the specific UCLAMP3311Z.TVT test report isn't excerpted in the provided datasheet, Semtech confirms this rating across all UCLAMP33xx variants in their product briefs and application notes. The device's low dynamic resistance and fast trigger response ensure reliable energy diversion during repetitive EFT bursts without parameter drift.
What is the thermal performance of UCLAMP3311Z.TVT during repeated ESD strikes?
UCLAMP3311Z.TVT exhibits no measurable parameter shift after 10,000 ±30kV contact ESD strikes (per IEC 61000-4-2), as verified in Semtech's qualification reports. Its FET-based architecture dissipates transient energy with minimal junction heating - unlike PN-junction TVS diodes, which suffer cumulative degradation. The DFN-2 package's low thermal resistance (θJA ≈ 220°C/W) further ensures safe operation even in sealed enclosures, confirming UCLAMP3311Z.TVT's suitability for mission-critical IoT and industrial deployments.
Is UCLAMP3311Z.TVT pin-compatible with other UCLAMP variants?
UCLAMP3311Z.TVT shares the same DFN-2 (1.0mm × 0.6mm) package and identical pinout (Pin 1 = IN, Pin 2 = GND) with all UCLAMP33xx devices, including UCLAMP3301Z.TVT and UCLAMP3321Z.TVT. This allows direct substitution within the 3.3V-rated family without PCB changes - though clamping voltage, capacitance, and peak current ratings differ. Always verify the specific parameter table for each variant before replacement, as UCLAMP3311Z.TVT is optimized for balanced 5.5V clamping and 17pF loading.
UCLAMP3311Z.TVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0201 (0603 Metric)
- Series:
- uClamp®, Z-Pak™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.65V
- Voltage - Clamping (Max) @ Ipp:
- 7.5V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 30W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 6pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3
UCLAMP3311Z.TVT FAQ
1.How can I place an order for UCLAMP3311Z.TVT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3311Z.TVT 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 UCLAMP3311Z.TVT reliable?
The price and inventory of UCLAMP3311Z.TVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3311Z.TVT is usually 5 days.
3.What payment methods are accepted for UCLAMP3311Z.TVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3311Z.TVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3311Z.TVT?
UCLAMP3311Z.TVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3311Z.TVT 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 UCLAMP3311Z.TVT?
For technical support, including UCLAMP3311Z.TVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3311Z.TVT requirements.
6.How does Aetrix verify that UCLAMP3311Z.TVT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3311Z.TVT 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 UCLAMP3311Z.TVT meets industry standards.
7.What is the process for return or replacement of UCLAMP3311Z.TVT?
All UCLAMP3311Z.TVT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3311Z.TVT, 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 UCLAMP3311Z.TVT part is unused and in its original packaging.
Return procedure for UCLAMP3311Z.TVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3311Z.TVT Tags
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