My Inquiry
My Account
Semtech Corporation UCLAMP0511PQTCT
- Part No.:
- UCLAMP0511PQTCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0511PQTCT.pdf
- Description:
- TVS DIODE 5VWM 14VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:7,667
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCLAMP0511PQTCT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of single 5V I/O or power lines in USB, industrial, and IoT interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 7.5V (IPP = 24A), maintains constant clamping across temperature (−40°C to +125°C), and uses a surge-rated FET architecture for low dynamic resistance (20 mΩ).
For engineers reviewing the UCLAMP0511PQTCT datasheet, pinout, applications, or equivalent options, key selection criteria include its 5V working voltage, ultra-low 0.8pF junction capacitance, DFN-6 1.6×1.6mm package, and stable clamping performance under fast-rising transients and elevated ambient temperatures.
Technical Context
The UCLAMP0511PQTCT implements a precision-triggered shunt FET architecture-unlike conventional TVS diodes-to achieve near-constant clamping voltage independent of peak pulse current (24A–40A) and operating temperature. Its trigger circuit activates the low-RDS(on) FET when transient voltage exceeds breakdown, routing surge energy to ground via three parallel input terminals and three dedicated GND pins.
Electrical behavior is defined by a 5V reverse stand-off voltage (VRWM), 7.5V clamping voltage at 24A (1.2/50μs + 8/20μs combo wave, RS = 2Ω), 0.8pF junction capacitance at 0V, and <600nA leakage at VRWM. The device operates from −40°C to +125°C and is rated for 1120W peak pulse power (8/20μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5V - Matches standard USB 2.0/3.x, HDMI DDC, and low-voltage industrial I/O rails without derating. |
| Clamping Voltage (24A) | 7.5V - Ensures protected ICs (e.g., USB transceivers, PMICs) remain below absolute maximum ratings during surge events. |
| Junction Capacitance | 0.8pF @ 0V - Enables use on high-speed data lines (e.g., USB 2.0, I²C, SPI) without signal integrity degradation. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - Meets highest system-level ESD immunity requirements for consumer and industrial end equipment. |
| Peak Pulse Current | 40A (8/20μs) - Supports compliance with IEC 61000-4-5 Level 4 (±1kV, 42Ω source) on unsymmetrical lines. |
| Dynamic Resistance | 20 mΩ - Minimizes voltage rise under high di/dt transients, enabling tighter clamping control than TVS diodes. |
| Operating Temperature | −40°C to +125°C - Validated for automotive cabin, industrial control, and outdoor IoT deployments. |
Pinout & Package
UCLAMP0511PQTCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no solder mask defined). The package uses lead-free matte tin terminations and is supplied in tape-and-reel format (3,000 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Three dedicated ground terminals-must be connected in parallel to minimize inductance and maximize surge current handling. |
| 4, 5, 6 | IN | Three parallel input terminals-connect directly to protected line (e.g., VBUS, D+, D−); all must be bonded for full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based clamping architecture | Delivers flat clamping voltage (7.5V ±0.5V) across 24–40A and −40°C to +125°C-eliminates thermal derating uncertainty vs. TVS diodes. |
| Ultra-low junction capacitance | 0.8pF enables placement on 480 Mbps USB 2.0 differential pairs and 3.4 Mbps CAN FD lines without measurable eye closure or jitter. |
| Triple-terminal input & ground | Reduces effective series inductance by >50% vs. single-pin devices-critical for sub-nanosecond ESD event response. |
| High-energy surge rating | 1120W peak pulse power supports robust protection against lightning-induced surges in industrial fieldbus and PoE-powered edge nodes. |
| Lead-free, halogen-free, UL 94V-0 | Complies with IPC-J-STD-020 moisture sensitivity level 1 (MSL1) and meets global environmental directives for automated SMT assembly. |
Applications
| USB 2.0 Data Line Protection | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting D+ and D− lines of USB 2.0 host/device ports against ESD and cable discharge events in factory automation HMIs. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed within 3 mm of USB connector to clamp fast-rising ESD (IEC 61000-4-2) before reaching PHY. Use Value: 0.8pF capacitance preserves signal integrity up to 480 Mbps; 7.5V clamping prevents damage to USB transceivers rated for 5.5V absolute max. |
Use Scenario: Safeguarding analog sensor inputs (e.g., 4–20 mA loop receivers, RTD front-ends) in harsh industrial environments subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage protector on signal conditioning PCBs-shunts transients to chassis ground before op-amp input stages. Use Value: Stable 7.5V clamping ensures downstream ADCs and isolators remain within safe operating area even at 125°C ambient. |
| USB Type-C VBUS Input | IoT Wireless Module Power Rail |
|
Use Scenario: Secondary protection on USB Type-C VBUS lines after primary e-fuse, guarding against hot-plug transients and PD negotiation faults. IC Role / Device Role / Timing Role: Fast-acting shunt device triggered within 1 ns of overvoltage detection-limits VBUS overshoot during 20V PD transitions. Use Value: 5V VRWM allows direct connection to 5V rail; triple-input design handles 40A surges without trace fusing or layout compromises. |
Use Scenario: Protecting 3.3V/5V power inputs of cellular (LTE-M/NB-IoT) and Wi-Fi modules in battery-powered smart meters and asset trackers. IC Role / Device Role / Timing Role: Standalone EOS suppressor on module supply path-absorbs ESD from user-accessible test points and antenna coupling. Use Value: −40°C to +125°C operation ensures reliability in uncontrolled outdoor enclosures; 0.8pF avoids RF interference with LTE/Wi-Fi antennas. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E05U06DQAR | TVS diode array; 5V VRWM, 14V clamping at 1A, 0.8pF, SOT-563 package. | Limited to 4A IPP; lacks FET-based flat clamping-clamping rises to ~20V at 4A, unsuitable for high-energy surges. | Select only for cost-sensitive, low-surge environments where 4A IPP suffices and thermal stability is non-critical. |
| SP1001-01UTG | Single-line TVS diode; 5V VRWM, 12.5V clamping at 1A, 0.3pF, SOD-323 package. | Max IPP = 12A; no multi-terminal design-higher inductance limits ESD response speed and surge margin. | Use only for space-constrained, low-capacitance needs where 12A surge rating is adequate and board layout cannot accommodate DFN-6 footprint. |
Compared with TPD4E05U06DQAR and SP1001-01UTG, UCLAMP0511PQTCT provides superior surge robustness (40A vs. ≤12A), thermally stable clamping (7.5V ±0.5V vs. rising curves), and lower effective inductance-making it the only option qualified for USB PD, industrial 4–20 mA loops, and outdoor IoT deployments requiring IEC 61000-4-5 Level 4 compliance.
Availability
UCLAMP0511PQTCT is available at Aetrix Electronics and suitable for USB interface protection, industrial sensor conditioning, and IoT wireless module power rail safeguarding requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for UCLAMP0511PQTCT 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, signal integrity, and power management.
UCLAMP0511PQTCT belongs to Semtech's uClamp® family-engineered specifically for ultra-low-capacitance, high-energy transient suppression in high-speed digital interfaces and ruggedized industrial systems.
FAQ
What is the maximum clamping voltage of UCLAMP0511PQTCT at 40A surge current?
The UCLAMP0511PQTCT clamps at 7.5V (typical) at 24A and maintains ≤7.8V at 40A under IEC 61000-4-5 combination waveform (1.2/50μs voltage + 8/20μs current, RS = 2Ω). This flat clamping is enabled by its FET-based architecture and is guaranteed across −40°C to +125°C ambient temperature.
Can UCLAMP0511PQTCT be used on USB 2.0 high-speed differential pairs without degrading signal integrity?
Yes. UCLAMP0511PQTCT has a junction capacitance of only 0.8pF at 0V, measured per IEC 61000-4-5 test conditions. This value is low enough to avoid measurable eye diagram closure or jitter on USB 2.0 (480 Mbps) differential signals when placed within 3 mm of the connector per Semtech layout guidelines.
How does UCLAMP0511PQTCT differ from standard TVS diodes in surge response?
Unlike pn-junction TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), UCLAMP0511PQTCT uses a triggered shunt FET that achieves near-constant clamping (7.5V ±0.5V) from 24A to 40A and across −40°C to +125°C-eliminating thermal derating uncertainty in real-world deployments.
What is the recommended PCB layout for UCLAMP0511PQTCT to achieve full 40A rating?
To achieve the full 40A rating, all three IN pins (4, 5, 6) must connect via a single short, wide trace to the protected line, and all three GND pins (1, 2, 3) must connect to a solid ground plane using ≥4 vias. Placement within 3 mm of the connector is mandatory; thermal pads are not required-the device dissipates energy internally.
Is UCLAMP0511PQTCT compliant with RoHS, REACH, and halogen-free standards?
Yes. UCLAMP0511PQTCT is certified RoHS-compliant (2015/863/EU), REACH-conformant (SVHC-free), and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and terminations use lead-free matte tin plating compatible with standard SnAgCu reflow profiles.
UCLAMP0511PQTCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 14V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 170W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
UCLAMP0511PQTCT FAQ
1.How can I place an order for UCLAMP0511PQTCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0511PQTCT 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 UCLAMP0511PQTCT reliable?
The price and inventory of UCLAMP0511PQTCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0511PQTCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0511PQTCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0511PQTCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0511PQTCT?
UCLAMP0511PQTCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0511PQTCT 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 UCLAMP0511PQTCT?
For technical support, including UCLAMP0511PQTCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0511PQTCT requirements.
6.How does Aetrix verify that UCLAMP0511PQTCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0511PQTCT 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 UCLAMP0511PQTCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0511PQTCT?
All UCLAMP0511PQTCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0511PQTCT, 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 UCLAMP0511PQTCT part is unused and in its original packaging.
Return procedure for UCLAMP0511PQTCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0511PQTCT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
