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Semtech Corporation UCLAMP2461P.TNT
- Part No.:
- UCLAMP2461P.TNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
UCLAMP2461P.TNT.pdf
- Description:
- 24V, 1-LINE SURGE PROTECTION
- Quantity:
- Payment:
- Shipping:
Inventory:9,850
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Product details
Overview
UCLAMP2461P.TNT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS 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, USB Type-C VBus, and industrial load switch input protection.
For engineers reviewing the UCLAMP2461P.TNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat voltage response, DFN-6 package footprint constraints, and compatibility with 24V bus architectures requiring robust surge immunity per IEC 61000-4-5.
Technical Context
The UCLAMP2461P.TNT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C, maintains stable clamping across temperature, and delivers 1120W peak pulse power (8/20μs). Its 175pF capacitance at 22V and 1MHz is optimized for VBus line protection where signal integrity is secondary to energy handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24V - defines maximum continuous DC operating voltage of protected line without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 24V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - provides robust system-level ESD protection without external shielding or layout mitigation. |
| Dynamic Resistance | 20mΩ - enables near-constant clamping by minimizing voltage rise (ΔV = I × RDYN) across full surge current range. |
| Junction Capacitance | 175pF at 22V, 1MHz - suitable for VBus/power rail protection; low enough to avoid excessive filtering but not intended for high-speed data lines. |
| Package | DFN-6 (1.6 × 1.6 × 0.55 mm) - enables compact placement near connectors with minimal PCB area and thermal mass. |
Pinout & Package
UCLAMP2461P.TNT is housed in a RoHS-compliant, halogen-free DFN-6 package (1.6 mm × 1.6 mm × 0.55 mm) with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All pins must be soldered for rated surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to minimize inductance and maximize 40A capability. |
| 4, 5, 6 | IN | Protected line input (e.g., VBus); parallel connection ensures uniform current sharing and optimal clamping response. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt architecture, delivering flat clamping vs. current and temperature - critical for 24V industrial and USB PD reliability. |
| Constant clamping voltage | 27.5–28V across 24–40A (8/20μs) and –40°C to +125°C - eliminates derating uncertainty in thermal or high-current environments. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during fast-rising surges and improves energy-handling margin versus TVS diodes with fixed RDYN. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in motor drives, PLCs, and industrial sensors. |
| Space-efficient DFN-6 | 1.6 × 1.6 mm footprint - saves >50% board area vs. SO-8 or SOT-23 alternatives while maintaining 1120W peak power rating. |
Applications
| USB Type-C Power Delivery (VBus) | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–24V USB PD VBus lines from lightning-induced surges, hot-plug transients, and ESD events during connector mating. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at Type-C receptacle, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping at full 40A surge, preventing latch-up or gate oxide damage in 24V-rated PD controllers (e.g., STUSB4500, TUSB7320). |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS25982) exposed to 24V rail surges in factory automation or remote metering. IC Role / Device Role / Timing Role: Front-end transient suppressor that limits voltage seen by the load switch's internal FET drain-source junction during surge events. Use Value: Keeps clamping voltage below 30V, ensuring safe operation of 30V-max rated load switches without derating or oversized devices. |
| IoT Edge Node Power Rails | Programmable Logic Controller (PLC) Digital Inputs |
Use Scenario: Securing 24V auxiliary power inputs on battery-backed IoT gateways or edge AI modules subject to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main 24V input rail, coordinated with upstream fuse and downstream LDO/regulator. Use Value: Delivers ±30kV ESD immunity and 40A surge handling in <2.6 mm² footprint - enabling ruggedized, compact outdoor deployments. |
Use Scenario: Protecting 24V digital input channels on modular PLC I/O cards from wiring-induced transients during installation or maintenance. IC Role / Device Role / Timing Role: Input-stage clamp on isolated 24V sink/source inputs, placed before optocoupler or signal conditioning circuitry. Use Value: Prevents false triggering or optocoupler saturation by limiting transient overvoltage to ≤28V, preserving signal integrity and channel accuracy. |
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 FET-based architecture. | Optimized for 22V systems (e.g., legacy USB PD, 24V nominal with 10% tolerance); slightly lower working voltage margin than UCLAMP2461P.TNT. | Select when protecting 22V rails or where tighter clamping headroom is needed below 24V-rated components. |
| UCLAMP3301P.TNT | 33V working voltage, 36V clamping, higher 60A surge rating, identical DFN-6 footprint. | Suited for 33V industrial buses (e.g., CAN FD power, 24V+ boost supplies); higher clamping may exceed damage thresholds of 24V ICs. | Choose only if system nominal voltage exceeds 24V or surge threat level exceeds 40A; verify downstream component VDS(max) ≥ 36V. |
Compared with TDS2211P and UCLAMP3301P.TNT, UCLAMP2461P.TNT uniquely balances 24V system compatibility, 27.5–28V clamping safety margin, and 40A surge capacity in the smallest DFN-6 form factor - making it the optimal choice for next-gen USB PD 3.1 and 24V industrial power rail protection.
Availability
UCLAMP2461P.TNT is available at Aetrix Electronics and suitable for USB Type-C power delivery, industrial load switch protection, and IoT edge node power rail applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for UCLAMP2461P.TNT 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 global supplier of analog and mixed-signal semiconductors focused on high-performance protection, sensing, and connectivity solutions for industrial, communications, and consumer markets.
The UCLAMP series belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 12–48V power rail protection with superior clamping stability and surge endurance.
FAQ
What is the maximum continuous operating voltage for UCLAMP2461P.TNT?
The UCLAMP2461P.TNT has a reverse stand-off voltage (VRWM) of 24V, meaning it can continuously block up to 24V DC without significant leakage or degradation. This makes UCLAMP2461P.TNT suitable for nominal 24V systems including USB PD 3.1 power rails and industrial control power inputs where sustained voltage does not exceed this rating.
How does UCLAMP2461P.TNT achieve stable clamping voltage across temperature and current?
UCLAMP2461P.TNT uses a surge-rated FET activated by a precision trigger circuit instead of a passive PN-junction. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in 27.5–28V clamping from 24A to 40A and across –40°C to +125°C. This behavior is confirmed in the UCLAMP2461P.TNT datasheet's clamping vs. temperature and current curves.
Can UCLAMP2461P.TNT replace standard TVS diodes in 24V applications?
Yes - UCLAMP2461P.TNT is designed as a drop-in functional upgrade for 24V TVS diodes in power rail protection. Its FET-based architecture delivers flatter clamping, lower dynamic resistance (20mΩ), and better thermal stability than typical TVS devices. However, UCLAMP2461P.TNT requires all six pins to be soldered (GND on pins 1–3, IN on 4–6) to achieve full 40A rating, unlike many two-terminal TVS parts.
What is the junction capacitance of UCLAMP2461P.TNT and where should it be used?
UCLAMP2461P.TNT exhibits 175pF junction capacitance at 22V and 1MHz, measured per datasheet specifications. This value is appropriate for VBus, power rail, and low-speed control line protection - but not for high-speed data lines (e.g., USB SS, PCIe, HDMI), where sub-1pF devices like RClamp3371ZC are required. UCLAMP2461P.TNT is intended for locations where energy handling outweighs capacitive loading concerns.
Is UCLAMP2461P.TNT RoHS and REACH compliant?
Yes - UCLAMP2461P.TNT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its DFN-6 package uses lead-free matte tin plating and UL 94V-0 molding compound, as documented in the official Semtech UCLAMP2461P.TNT datasheet and material declarations.
UCLAMP2461P.TNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0603 (1608 Metric)
- Series:
- µClamp®
- 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:
- 65V
- Current - Peak Pulse (10/1000µs):
- 23A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 165pF @ 1MHz (Max)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-SLP1608P
UCLAMP2461P.TNT FAQ
1.How can I place an order for UCLAMP2461P.TNT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP2461P.TNT 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 UCLAMP2461P.TNT reliable?
The price and inventory of UCLAMP2461P.TNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP2461P.TNT is usually 5 days.
3.What payment methods are accepted for UCLAMP2461P.TNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP2461P.TNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP2461P.TNT?
UCLAMP2461P.TNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP2461P.TNT 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 UCLAMP2461P.TNT?
For technical support, including UCLAMP2461P.TNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP2461P.TNT requirements.
6.How does Aetrix verify that UCLAMP2461P.TNT is sourced from the original manufacturer or authorized distributors?
All UCLAMP2461P.TNT 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 UCLAMP2461P.TNT meets industry standards.
7.What is the process for return or replacement of UCLAMP2461P.TNT?
All UCLAMP2461P.TNT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP2461P.TNT, 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 UCLAMP2461P.TNT part is unused and in its original packaging.
Return procedure for UCLAMP2461P.TNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP2461P.TNT Tags
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