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Semtech Corporation UCLAMP3603T.TCT
- Part No.:
- UCLAMP3603T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-XDFN
- Datasheet:
-
UCLAMP3603T.TCT.pdf
- Description:
- TVS DIODE 36VWM 65VC SLP1710N6T
- Quantity:
- Payment:
- Shipping:
Inventory:1,946
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Product details
Overview
UCLAMP3603T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 36V-rated DC 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 rail protection.
For engineers reviewing the UCLAMP3603T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat voltage response, DFN footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards in space-constrained 22–36V systems.
Technical Context
The UCLAMP3603T.TCT 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 with <600nA reverse leakage at 36V stand-off, 175pF junction capacitance at 1MHz/36V, and delivers 1120W peak pulse power. The device is optimized for unsymmetrical line protection where ground-referenced clamping and minimal parasitic inductance are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 36 V - maximum continuous DC operating voltage before triggering; matches 36V industrial bus and USB PD extended range rails. |
| Clamping Voltage | 27.5 V at 24A (1.2/50μs + 8/20μs combo wave) - ensures protected ICs (e.g., load switches, PD controllers) remain below absolute max ratings during surge events. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and outdoor IoT nodes. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - eliminates need for secondary ESD stages in connector-facing designs. |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients (e.g., lightning-induced surges). |
| Junction Capacitance | 175 pF at 36V / 1MHz - suitable for DC power and low-speed signal lines (e.g., CC, SBU, enable/control), not high-speed data lanes. |
Pinout & Package
UCLAMP3603T.TCT is housed in a RoHS-compliant, halogen-free DFN 1.6 mm × 1.6 mm × 0.55 mm 6-lead package with UL 94V-0 molding compound and lead-free finish. All three input pins (4, 5, 6) must be paralleled to achieve full 40A rating; all three ground pins (1, 2, 3) require low-inductance connection to PCB ground plane via multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to minimize inductance and maximize current sharing. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch IN); parallel connection required to handle full 40A surge without thermal derating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diodes with active shunt architecture, delivering stable clamping independent of current magnitude or temperature drift. |
| Constant clamping voltage | 27.5–28V across 24–40A and –40°C to +125°C - eliminates design margin uncertainty in thermally demanding environments. |
| Low dynamic resistance | 20 mΩ enables sub-1V overshoot during 100A/μs dI/dt events, critical for protecting sensitive gate drivers and e-fuses. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) supports robust front-end protection in industrial 24/36V systems exposed to indirect lightning. |
Applications
| USB PD Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–36V VBUS lines in USB Type-C ports supporting Programmable Power Supply (PPS) and Extended Power Range (EPR). IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at the connector, clamping transients before they reach the PD controller and buck-boost ICs. Use Value: Maintains 27.5V clamping at full 40A surge - well below 30V absolute max ratings of common PD controllers like STUSB4500 or TUSB7320. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., ON Semiconductor NIS5132, TI TPS25940) in remote meters and PLC I/O modules. IC Role / Device Role / Timing Role: Front-line transient diverter that limits voltage stress on the load switch's internal MOSFET during 1kV/42Ω surges per IEC 61000-4-5. Use Value: Prevents gate oxide damage and latch-up by holding clamping voltage ≤28V - below typical 30V VDS(max) derated for surge conditions. |
| Smart Building Sensor Node Power Rail | Automated Test Equipment (ATE) DC Supply Input |
|
Use Scenario: Securing 24–36V auxiliary power inputs in battery-backed wireless sensors deployed in HVAC ducts or lighting control panels. IC Role / Device Role / Timing Role: Single-component solution for combined ESD, EFT, and surge protection on unshielded field wiring exposed to electrostatic discharge and switching transients. Use Value: Delivers ±30kV ESD immunity and ±4kV EFT (IEC 61000-4-4) without requiring cascaded protection, reducing BOM count and board area. |
Use Scenario: Protecting programmable DC power supply inputs in ATE racks where hot-plug events and relay bounce induce high dV/dt transients. IC Role / Device Role / Timing Role: Fast-acting clamp that responds within nanoseconds to limit overshoot on 36V supply rails feeding precision DACs and reference circuits. Use Value: 175pF capacitance avoids signal integrity issues on control lines, while 20mΩ RDYN ensures minimal voltage droop during multi-amp surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCLAMP3303T.TCT | 33V working voltage, 25.5V clamping at 24A, same 40A rating and DFN package. | Better suited for 24–33V systems (e.g., PoE++ PSE, 24V PLCs); lower clamping may improve margin for 28V-rated ICs. | Select when system nominal voltage is ≤33V and tighter clamping headroom is required. |
| SMAJ36A | 36V standoff, 58.1V clamping at 10A (6.4A typical), DO-214AC package, 400W peak power. | Larger footprint, higher clamping voltage, and temperature-dependent response - requires larger layout margin and additional thermal relief. | Choose only if legacy through-hole or larger surface-mount footprint is mandated and 58V clamping is acceptable. |
Compared with UCLAMP3603T.TCT, UCLAMP3303T.TCT offers lower clamping for 33V systems but reduced voltage margin, while SMAJ36A provides lower cost but sacrifices clamping stability, surge rating, and board space efficiency - making UCLAMP3603T.TCT optimal for compact, high-reliability 36V industrial and USB PD designs.
Availability
UCLAMP3603T.TCT is available at Aetrix Electronics and suitable for USB PD implementations, industrial load switch protection, and smart sensor node power rails requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for UCLAMP3603T.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 analog and mixed-signal ICs for precision sensing, protection, and connectivity in industrial, communications, and consumer markets.
The UCLAMP3603T.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes with FET-based active clamping for flat, temperature-stable surge protection in high-voltage DC power systems.
FAQ
What is the maximum continuous operating voltage for UCLAMP3603T.TCT?
The UCLAMP3603T.TCT has a reverse stand-off voltage (VRWM) of 36 V, meaning it can reliably block up to 36 V DC under normal operation without triggering. This makes UCLAMP3603T.TCT appropriate for 36V industrial buses, USB PD EPR rails, and other high-voltage power domains where sustained voltage levels approach 36V.
How does UCLAMP3603T.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), UCLAMP3603T.TCT maintains a near-constant clamping voltage of 27.5–28 V from 24A to 40A due to its FET-based shunt architecture and decreasing RDS(on). This behavior is confirmed across –40°C to +125°C, giving UCLAMP3603T.TCT superior predictability in thermal and surge-critical applications.
Can UCLAMP3603T.TCT be used on high-speed data lines like USB SS or PCIe?
No - UCLAMP3603T.TCT is not suitable for high-speed data lines. Its 175 pF junction capacitance at 36V would severely degrade signal integrity on SuperSpeed (5+ Gbps), PCIe, or DisplayPort lanes. UCLAMP3603T.TCT is intended exclusively for DC power rails and low-speed control signals (e.g., enable, fault, CC/SBU) where capacitance is non-critical.
What is the recommended PCB layout for UCLAMP3603T.TCT to achieve rated 40A performance?
To achieve full 40A surge capability, UCLAMP3603T.TCT requires all three IN pins (4, 5, 6) to be shorted together with a low-inductance trace, and all three GND pins (1, 2, 3) connected to a solid ground plane using ≥4 thermal vias. UCLAMP3603T.TCT must be placed within 5 mm of the protected connector, with no stubs or branches on the protected line - deviations reduce effective surge handling and increase voltage overshoot.
Does UCLAMP3603T.TCT meet IEC 61000-4-5 for industrial surge immunity?
Yes - UCLAMP3603T.TCT is rated for 40A peak pulse current (8/20μs) and ±1kV (1.2/50μs voltage + 8/20μs current combo wave, RS = 42 Ω), satisfying IEC 61000-4-5 Level 4 requirements for industrial environments. Its 1120W peak pulse power rating and stable clamping ensure reliable protection against indirect lightning and switching surges in factory automation and building control systems.
UCLAMP3603T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-XDFN
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 3
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V (Max)
- Voltage - Breakdown (Min):
- 37V
- Voltage - Clamping (Max) @ Ipp:
- 65V
- Current - Peak Pulse (10/1000µs):
- 2A (1.2/50µs)
- Power - Peak Pulse:
- 140W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1710N6T
UCLAMP3603T.TCT FAQ
1.How can I place an order for UCLAMP3603T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3603T.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 UCLAMP3603T.TCT reliable?
The price and inventory of UCLAMP3603T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3603T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP3603T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3603T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3603T.TCT?
UCLAMP3603T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3603T.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 UCLAMP3603T.TCT?
For technical support, including UCLAMP3603T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3603T.TCT requirements.
6.How does Aetrix verify that UCLAMP3603T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3603T.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 UCLAMP3603T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP3603T.TCT?
All UCLAMP3603T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3603T.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 UCLAMP3603T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP3603T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3603T.TCT Tags
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Diodes Incorporated
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