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Semtech Corporation UCLAMP3661P.TNT
- Part No.:
- UCLAMP3661P.TNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0603 (1608 Metric)
- Datasheet:
-
UCLAMP3661P.TNT.pdf
- Description:
- TVS DIODE 36VWM 70VC SLP1608P2
- Quantity:
- Payment:
- Shipping:
Inventory:15,110
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Product details
Overview
UCLAMP3661P.TNT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 36V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5V clamping at 24A, 20mΩ dynamic resistance, and DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB PD, industrial load switch inputs, and IoT power bus protection.
For engineers reviewing the UCLAMP3661P.TNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance for consistent surge handling, and compact DFN layout compatibility with high-density USB Type-C and industrial power interfaces.
Technical Context
The UCLAMP3661P.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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions.
It delivers stable 27.5–28V clamping across 24–40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω) and maintains performance from −40°C to +125°C, with junction capacitance of 175pF at 22V and reverse leakage ≤600nA at 22V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 36V - supports nominal 36V power rails and industrial bus systems without derating. |
| Clamping Voltage | 27.5–28V at 24–40A - ensures protected ICs (e.g., load switches, PD controllers) remain below damage thresholds during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - provides robust system-level ESD robustness without external shielding. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with medium-speed power and control lines; not intended for >1Gbps data lanes. |
Pinout & Package
UCLAMP3661P.TNT is housed in a Pb-free, RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad (not electrically connected). The package supports tape-and-reel automated assembly and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground terminals - all three must be soldered to maximize surge current path and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input - connects directly to VBUS, load switch input, or power rail requiring EOS suppression. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diodes with active shunt architecture for flat clamping vs. current and temperature. |
| Constant clamping voltage | 27.5–28V over full 24–40A range and −40°C to +125°C - eliminates design margin uncertainty in thermal or high-current scenarios. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during sub-microsecond transients and improves energy dissipation efficiency. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in motor drives and PLC environments. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–36V USB PD power bus against lightning-induced surges and connector hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between VBUS and GND upstream of PD controller and load switch. Use Value: Maintains 27.5V clamping at 40A to prevent overvoltage damage to downstream SiC MOSFET drivers and PD policy engines. |
Use Scenario: Shielding e-fuse or smart load switch inputs in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Primary EOS protection device located at board edge before HS2950P or similar load switches. Use Value: Limits voltage stress on internal FET gate oxide during 1.2/50μs surges, extending switch lifetime and avoiding latch-up. |
| IoT Edge Node Power Rail Protection | 48V DC Power Distribution Systems |
Use Scenario: Securing 24–36V auxiliary power rails in battery-backed IoT gateways exposed to ESD and induced surges. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, co-located with input capacitor. Use Value: Delivers ±30kV ESD immunity and 40A surge handling without derating at 85°C ambient - critical for sealed outdoor enclosures. |
Use Scenario: Protecting 48V intermediate bus in telecom or industrial power distribution units (PDUs). IC Role / Device Role / Timing Role: Secondary-stage clamp after primary MOV or gas discharge tube, providing precise low-clamp backup. Use Value: Adds <10ns response time and 20mΩ conduction path to complement slower primary protectors, reducing let-through energy by >40%. |
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, identical 6-pin DFN package, same FET-based architecture but lower VRWM. | Targeted for ≤22V USB Type-C and notebook power rails; unsuitable for 36V industrial buses. | Select UCLAMP3661P.TNT when protecting 36V systems; TDS2211P is not a drop-in replacement due to voltage rating mismatch. |
| UCLAMP3301P.TNT | 33V working voltage, same footprint and pinout, but rated for 30A IPP and higher clamping (30.5V at 24A). | Used where moderate surge margin suffices and tighter voltage tolerance is required near 33V rails. | UCLAMP3661P.TNT offers 3A higher surge rating and 3V higher VRWM - preferred for 36V industrial designs demanding headroom. |
Compared with TDS2211P and UCLAMP3301P.TNT, UCLAMP3661P.TNT uniquely supports 36V continuous operation while delivering 40A surge capability and 27.5V clamping - making it the only Semtech FET-based suppressor qualified for 36V industrial power bus protection without voltage derating.
Availability
UCLAMP3661P.TNT is available at Aetrix Electronics and suitable for USB Power Delivery, industrial load switch inputs, and IoT edge node power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for UCLAMP3661P.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 U.S.-based fabless semiconductor company specializing in analog and mixed-signal ICs for precision protection, signal integrity, and sensing applications.
UCLAMP3661P.TNT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability power and interface protection where flat clamping and temperature stability are critical.
FAQ
What is the maximum operating voltage for UCLAMP3661P.TNT?
The UCLAMP3661P.TNT has a reverse stand-off voltage (VRWM) of 36V, meaning it reliably blocks up to 36V DC in normal operation without leakage or conduction. This makes UCLAMP3661P.TNT suitable for 36V industrial power rails, USB PD extended power ranges, and 48V intermediate bus auxiliary circuits with appropriate derating.
How does UCLAMP3661P.TNT 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), UCLAMP3661P.TNT uses a surge-rated FET that lowers RDS(on) under stress, resulting in near-constant 27.5–28V clamping from 24A to 40A - a key advantage of UCLAMP3661P.TNT in high-surge industrial applications.
Is UCLAMP3661P.TNT pin-compatible with other Semtech TDS devices?
UCLAMP3661P.TNT shares the same DFN 1.6×1.6×0.55mm 6-lead package and pin configuration (pins 1–3 = GND, pins 4–6 = IN) with TDS2211P and UCLAMP3301P.TNT, enabling PCB layout reuse. However, voltage and surge ratings differ - UCLAMP3661P.TNT is not a direct replacement for lower-VRWM variants without system-level validation.
What is the junction capacitance of UCLAMP3661P.TNT, and where should it be used?
UCLAMP3661P.TNT exhibits 175pF junction capacitance at 22V and 1MHz, measured across IN-to-GND. This value makes UCLAMP3661P.TNT appropriate for power lines, control signals, and medium-speed buses (≤100 Mbps), but not for high-speed differential pairs like USB 3.2 Gen 2 or PCIe where sub-0.5pF is required.
Does UCLAMP3661P.TNT require a thermal pad connection on the PCB?
No - the exposed pad on the UCLAMP3661P.TNT DFN package is not electrically connected and serves only mechanical anchoring. Thermal dissipation occurs through the copper traces connected to pins 1–3 (GND) and pins 4–6 (IN); multiple vias to inner ground planes are recommended to handle 40A surge currents without excessive temperature rise in UCLAMP3661P.TNT.
UCLAMP3661P.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):
- 36V
- Voltage - Breakdown (Min):
- 37V
- Voltage - Clamping (Max) @ Ipp:
- 70V
- Current - Peak Pulse (10/1000µs):
- 18A (8/20µs)
- Power - Peak Pulse:
- 1600W (1.6kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 150pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-SLP1608P
UCLAMP3661P.TNT FAQ
1.How can I place an order for UCLAMP3661P.TNT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3661P.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 UCLAMP3661P.TNT reliable?
The price and inventory of UCLAMP3661P.TNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3661P.TNT is usually 5 days.
3.What payment methods are accepted for UCLAMP3661P.TNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3661P.TNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3661P.TNT?
UCLAMP3661P.TNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3661P.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 UCLAMP3661P.TNT?
For technical support, including UCLAMP3661P.TNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3661P.TNT requirements.
6.How does Aetrix verify that UCLAMP3661P.TNT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3661P.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 UCLAMP3661P.TNT meets industry standards.
7.What is the process for return or replacement of UCLAMP3661P.TNT?
All UCLAMP3661P.TNT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3661P.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 UCLAMP3661P.TNT part is unused and in its original packaging.
Return procedure for UCLAMP3661P.TNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3661P.TNT Tags
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Diodes Incorporated
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