My Inquiry
My Account
Semtech Corporation UCLAMP2401T.TCT
- Part No.:
- UCLAMP2401T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP2401T.TCT.pdf
- Description:
- TVS DIODE 24VWM 50VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:87,534
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UCLAMP2401T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 24V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB PD, Type-C, and industrial load switch input protection.
For engineers reviewing the UCLAMP2401T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC vs. IPP behavior, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The UCLAMP2401T.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A (8/20μs) due to decreasing RDS(on) under surge conditions.
It operates over −40°C to +125°C, maintains stable 27.5–28V clamping up to 125°C, and delivers <20mΩ dynamic resistance measured between 1A and 40A. Its 175pF capacitance at 22V/1MHz supports high-speed interface protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24 V - Matches nominal bus voltage of USB PD 3.0 (up to 24V) and industrial 24V systems, enabling direct placement on protected line without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - Remains stable across temperature and current, ensuring downstream ICs (e.g., USB PD controllers) stay below absolute maximum ratings during surge events. |
| Peak Pulse Current | 40 A (8/20μs) - Meets IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) and exceeds typical industrial surge requirements for 24V buses. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Provides robust system-level ESD immunity without external shielding or layout reinforcement. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping behavior; reduces voltage overshoot during fast-rising transients compared to TVS diodes with fixed RDYN. |
| Junction Capacitance | 175 pF at 22 V / 1 MHz - Low enough for DC power rail and medium-speed data line protection (e.g., CC/SBU, load switch enable), avoiding signal distortion. |
Pinout & Package
UCLAMP2401T.TCT 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 not required (energy dissipated in silicon). All six terminals are electrically active: three GND pins (1–3) and three IN pins (4–6), requiring parallel connection for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias to sustain 40A surge current and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input; pins are internally paralleled - must be shorted together externally and placed adjacent to connector to minimize trace inductance before suppression. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces traditional TVS with active switching: clamping voltage stays near trigger threshold (≈27.5V), independent of IPP magnitude - eliminates linear VC = VBR + IPP×RDYN drift. |
| Temperature-stable clamping | Clamping voltage variation <0.5V from −40°C to +125°C at 40A - enables reliable protection in uncontrolled thermal environments (e.g., industrial enclosures, automotive under-hood). |
| High-energy surge handling | 1120 W peak pulse power (8/20μs) - supports repeated surge events per IEC 61000-4-5 without parameter shift or degradation. |
| Low-leakage operation | 600 nA max reverse leakage at 24V - prevents measurable power loss in always-on 24V rails and avoids false triggering in high-impedance sensing circuits. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 24V USB PD 3.1 power bus against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at Type-C receptacle VBUS pin, clamping transients before reaching PD controller and e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - keeps PD controller within 30V absolute max rating even under worst-case surge + thermal stress. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., TPS229xx, MPQ6400) operating from 24V DC rails in remote meters or PLC I/O modules. IC Role / Device Role / Timing Role: Primary front-end surge clamp on VIN pin, limiting voltage seen by internal MOSFET gate oxide and overvoltage protection circuitry. Use Value: Prevents latch-up or permanent damage to load switch during 1kV/42Ω surges by holding clamped voltage below 28V - avoids costly field failures and warranty returns. |
| IoT Edge Node Power Rail Protection | 24V Industrial Control Signal Line Protection |
|
Use Scenario: Securing 24V auxiliary supply rail in battery-backed IoT gateways exposed to EFT bursts and electrostatic discharge in factory environments. IC Role / Device Role / Timing Role: Standalone EOS protector on main 24V input, coordinated with upstream fuse and downstream LDO to form tiered protection architecture. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and 40A surge capability ensure uninterrupted operation during repetitive 5/50ns bursts - critical for edge node uptime SLA. |
Use Scenario: Protecting enable/control inputs of 24V solenoid drivers or relay modules subjected to inductive kickback and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) clamp on digital control line, preserving signal rise/fall times while blocking >24V transients. Use Value: Enables direct integration without RC filtering or level-shifting - reduces BOM count and board space versus TVS + series resistor solutions. |
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, 27.5–28V clamping, same DFN-6 package and pinout | Optimized for 22V USB PD and lower-voltage industrial rails; slightly lower VC but insufficient margin for 24V systems | Select when protecting ≤22V buses where tighter clamping headroom is prioritized over 24V compatibility. |
| UCLAMP3301T.TCT | 33V working voltage, 36–37V clamping, identical FET-based architecture and DFN-6 footprint | Suitable for 33V industrial buses and PoE++ applications; higher VC may exceed downstream IC limits in 24V designs | Choose only if system nominal voltage is ≥30V or if higher surge margin (e.g., >40A) is required beyond UCLAMP2401T.TCT's rating. |
Compared with TDS2211P and UCLAMP3301T.TCT, UCLAMP2401T.TCT uniquely balances 24V system compatibility, sub-28V clamping headroom, and 40A surge capacity - making it the optimal choice for next-generation USB PD 3.1 and 24V industrial control designs requiring guaranteed voltage ceiling compliance.
Availability
UCLAMP2401T.TCT is available at Aetrix Electronics and suitable for USB Power Delivery, industrial load switch protection, and 24V IoT edge node designs requiring stable component supply, long-term lifecycle assurance, and consistent surge performance across temperature extremes.
Supply support for UCLAMP2401T.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 precision sensing, protection, and connectivity applications.
The UCLAMP family is engineered specifically for high-reliability transient suppression in power delivery and industrial control systems, leveraging FET-based architecture to overcome limitations of conventional TVS diodes in voltage stability and thermal resilience.
FAQ
What is the maximum continuous operating voltage for UCLAMP2401T.TCT?
The UCLAMP2401T.TCT has a reverse stand-off voltage (VRWM) of 24 V, meaning it can continuously block up to 24 V DC without conduction. This matches standard 24V industrial and USB PD 3.1 power rails, and ensures no leakage-induced power loss or false triggering under normal operation. The device begins clamping above ~27.5 V during transient events.
How does UCLAMP2401T.TCT 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), UCLAMP2401T.TCT uses an active FET shunt that maintains a nearly constant 27.5–28 V clamping voltage from 24A to 40A (8/20μs). This eliminates design uncertainty caused by current-dependent voltage overshoot and improves downstream IC survivability.
Can UCLAMP2401T.TCT be used on high-speed data lines like USB SS or PCIe?
No - UCLAMP2401T.TCT is not suitable for high-speed differential data lines (e.g., USB SuperSpeed, PCIe, HDMI) due to its 175 pF junction capacitance, which would severely degrade signal integrity. It is intended for DC power rails and medium-speed control lines (e.g., enable, fault, CC/SBU). For data lines, Semtech recommends RClamp3371ZC (<0.25 pF) instead of UCLAMP2401T.TCT.
What PCB layout practices are critical for optimal UCLAMP2401T.TCT performance?
To achieve rated 40A surge capability, all three IN pins (4–6) must be shorted together with a low-inductance trace, and all three GND pins (1–3) must connect to a solid ground plane using ≥3 vias. Placement must be within 3 mm of the protected connector, and no thermal pad is required - energy is dissipated in the silicon die, not through package conduction.
Is UCLAMP2401T.TCT compliant with environmental and safety standards?
Yes - UCLAMP2401T.TCT is Pb-free, halogen-free, and RoHS/WEEE compliant. Its molding compound meets UL 94V-0 flammability rating. It is qualified per IEC 61000-4-2 (±30kV ESD), IEC 61000-4-4 (±4kV EFT), and IEC 61000-4-5 (40A 8/20μs, ±1kV 1.2/50μs), making it suitable for global industrial and consumer deployments requiring certified surge immunity.
UCLAMP2401T.TCT 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 50pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
UCLAMP2401T.TCT FAQ
1.How can I place an order for UCLAMP2401T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP2401T.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 UCLAMP2401T.TCT reliable?
The price and inventory of UCLAMP2401T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP2401T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP2401T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP2401T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP2401T.TCT?
UCLAMP2401T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP2401T.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 UCLAMP2401T.TCT?
For technical support, including UCLAMP2401T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP2401T.TCT requirements.
6.How does Aetrix verify that UCLAMP2401T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP2401T.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 UCLAMP2401T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP2401T.TCT?
All UCLAMP2401T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP2401T.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 UCLAMP2401T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP2401T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP2401T.TCT 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 …
