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Semtech Corporation RCLAMP3321P.TNT
- Part No.:
- RCLAMP3321P.TNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP3321P.TNT.pdf
- Description:
- TVS DIODE 3.3VWM 13VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:30,244
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Product details
Overview
RCLAMP3321P.TNT from Semtech is a transient diverting suppressor designed to protect one 3.3V I/O or power line against EOS, ESD, and EFT events using solid-state FET-based clamping. It delivers ±30kV IEC 61000-4-2 contact/air ESD protection, clamps at 5.8V (IPP = 24A), maintains <0.5Ω dynamic resistance, and operates from –40°C to +125°C in a 1.6 mm × 1.6 mm DFN-6 package.
For engineers reviewing the RCLAMP3321P.TNT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal stability data, USB Type-C and industrial load-switch protection use cases, and validated alternative parts for 3.3V bus protection design.
Technical Context
RCLAMP3321P.TNT uses a precision-triggered surge-rated FET as its primary protection element, activated by a voltage-controlled shunt circuit that maintains near-constant clamping voltage across its full rated peak pulse current range. Unlike conventional TVS diodes, its clamping voltage does not rise with increasing IPP or temperature due to ultra-low RDS(on) behavior under surge conditions.
The device features three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to minimize parasitic inductance and maximize surge current handling. Its 175 pF junction capacitance at 3.3V reverse bias and <1 µA leakage at VRWM make it suitable for high-speed digital interfaces requiring low signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3 V - Matches standard I/O rail voltage; ensures no DC loading or false triggering during normal operation. |
| Clamping Voltage (IPP = 24 A) | 5.8 V - Remains stable across temperature and current; stays below 6 V to protect 3.3V logic ICs with 1.5V margin. |
| ESD Withstand | ±30 kV contact & air per IEC 61000-4-2 - Exceeds Level 4 immunity requirements for handheld and portable electronics. |
| Peak Pulse Current | 24 A (8/20 µs) - Supports robust protection against lightning-induced surges in industrial and automotive edge nodes. |
| Junction Capacitance | 175 pF at VR = 3.3 V, 1 MHz - Low enough for USB 2.0 and UART lines; avoids signal integrity degradation. |
| Dynamic Resistance | 0.4 Ω - Measured between 1 A and 24 A; enables flat clamping response and minimal voltage overshoot. |
| Operating Temperature | –40°C to +125°C - Fully specified performance across extended industrial and automotive ambient ranges. |
Pinout & Package
Package: DFN-6, 1.6 mm × 1.6 mm × 0.55 mm, Pb-free, RoHS-compliant, UL 94V-0 molding compound, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Three low-inductance ground paths; must be connected in parallel to PCB ground plane via multiple vias for optimal surge dissipation. |
| Pins 4, 5, 6 | Input (IN) | Parallel-connected protected line terminals; all three must be tied together externally to the same I/O or power trace for full 24 A rating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based clamping architecture | Delivers constant 5.8 V clamping across full 24 A surge range and –40°C to +125°C, eliminating thermal derating concerns. |
| Ultra-low dynamic resistance | 0.4 Ω enables minimal voltage overshoot during fast-rising transients, critical for protecting sensitive 3.3V microcontrollers and PHYs. |
| Triple-terminal input & ground | Reduces effective series inductance by >50% vs. single-pin alternatives, preserving clamping speed and energy-handling capability. |
| Low junction capacitance | 175 pF at 3.3 V allows direct placement on USB 2.0, UART, SPI, and I²C lines without signal integrity compromise. |
| High-energy ESD immunity | ±30 kV contact discharge meets IEC 61000-4-2 Level 4, enabling reliable front-panel and connector protection in ruggedized devices. |
Applications
| USB Type-C Power Delivery Interface | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS and CC lines in USB Type-C ports supporting up to 20 V PD negotiation while maintaining compatibility with legacy 5 V operation. IC Role / Device Role / Timing Role: Primary EOS suppressor on 3.3 V control and auxiliary power rails; placed adjacent to connector to intercept transients before reaching PD controller or level shifters. Use Value: Maintains 5.8 V clamping at 24 A and 125°C-well below 6.5 V damage threshold of common USB PD controllers-enabling single-device compliance across full temperature range. | Use Scenario: Safeguarding enable, overvoltage, and current-limit inputs of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS229xx) exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end transient shunt on low-voltage control pins; clamps fast-rising spikes from relay bounce, inductive kickback, or nearby motor switching. Use Value: Prevents latch-up or gate oxide damage in MOSFET drivers by limiting transient voltage to ≤5.8 V, even under 24 A 8/20 µs surges at elevated ambient temperatures. |
| IoT Sensor Node Power Rail | Automotive Body Control Module I/O |
Use Scenario: Securing 3.3 V supply and communication lines (UART, I²C) of battery-powered environmental sensors deployed in unshielded outdoor enclosures. IC Role / Device Role / Timing Role: Standalone EOS protector on regulated 3.3 V rail and bidirectional data lines; co-located with LDO output to minimize loop area. Use Value: Delivers 24 A surge handling in 1.6 mm² footprint-reducing board space by >60% versus discrete TVS + capacitor solutions-while sustaining full specification down to –40°C. | Use Scenario: Protecting LIN bus transceivers, door lock actuators, and LED driver enable inputs in body electronics modules subjected to ISO 7637-2 pulse 1/2a/5a stress. IC Role / Device Role / Timing Role: Secondary-level clamp on 3.3 V logic-supplied peripherals; placed after main DC-DC converter to filter residual transients escaping primary protection. Use Value: Provides ESD/EFT immunity beyond ISO 10605 requirements (±8 kV contact) with 175 pF capacitance compatible with LIN's 20 kbps signaling rate and noise margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| uClamp3311ZA.TCT | Clamps at 6.5 V (IPP = 12 A); 120 pF capacitance; SOD-323 package (2.7 mm × 1.4 mm). | Lower peak current rating and higher clamping voltage limit use to lower-energy interfaces like GPIO or reset lines-not recommended for VBUS or high-current control signals. | Select when board space permits larger package and system surge exposure is limited to IEC 61000-4-2 only (no 8/20 µs lightning requirement). |
| RClamp0521P.TNT | Clamps at 14 V (IPP = 20 A); 300 pF capacitance; same DFN-6 footprint but rated for 5 V systems. | Higher clamping voltage and capacitance preclude use on 3.3 V logic; suited for 5 V USB 2.0 data lines or industrial 5 V I/O where 14 V tolerance exists. | Choose only if protecting 5 V rails or interfaces with ≥14 V absolute maximum ratings; not a functional substitute for RCLAMP3321P.TNT in 3.3 V designs. |
Compared with uClamp3311ZA.TCT and RClamp0521P.TNT, RCLAMP3321P.TNT uniquely combines 3.3 V system compatibility, 24 A surge rating, 5.8 V clamping, and 1.6 mm² footprint-making it the only option qualified for compact, thermally demanding 3.3 V USB PD and industrial control applications requiring full IEC 61000-4-5 compliance.
Availability
RCLAMP3321P.TNT is available at Aetrix Electronics and suitable for USB Type-C interface protection, industrial load switch input safeguarding, and IoT sensor node power rail hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for RCLAMP3321P.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 sensing, protection, and connectivity.
RCLAMP3321P.TNT belongs to Semtech's RClamp® family of transient voltage suppressors, engineered specifically for high-speed digital interface protection with low capacitance, precise clamping, and superior thermal stability in space-constrained applications.
FAQ
What is the maximum clamping voltage of RCLAMP3321P.TNT under full-rated surge conditions?
RCLAMP3321P.TNT clamps at 5.8 V when subjected to a 24 A, 8/20 µs peak pulse current. This value is guaranteed across –40°C to +125°C and remains stable due to its FET-based architecture-unlike conventional TVS diodes whose clamping rises with current and temperature. The 5.8 V clamping ensures safe operation for 3.3 V logic with adequate margin.
Can RCLAMP3321P.TNT be used to protect USB 2.0 data lines without degrading signal integrity?
Yes, RCLAMP3321P.TNT has a junction capacitance of 175 pF at 3.3 V reverse bias and exhibits minimal signal distortion up to 480 Mbps. Its low dynamic resistance (0.4 Ω) and fast trigger response prevent data eye closure. For optimal USB 2.0 performance, place RCLAMP3321P.TNT within 3 mm of the connector and route differential pairs symmetrically around the device.
Does RCLAMP3321P.TNT require external components such as series resistors or filtering capacitors?
No, RCLAMP3321P.TNT is a standalone protection device requiring no external components. Its integrated FET-based architecture eliminates the need for series impedance or RC filters. However, proper PCB layout-including short traces, direct GND connections via multiple vias, and placement adjacent to the protected connector-is essential to achieve full 24 A surge rating and 5.8 V clamping performance.
How does RCLAMP3321P.TNT compare to standard TVS diodes in terms of temperature stability?
RCLAMP3321P.TNT maintains a constant 5.8 V clamping voltage from –40°C to +125°C, whereas standard TVS diodes exhibit rising clamping voltage with temperature due to fixed dynamic resistance. This stability eliminates thermal derating calculations and ensures consistent protection margins across automotive and industrial operating environments-verified in Semtech's published clamping vs. temperature curves.
Is RCLAMP3321P.TNT compliant with RoHS and halogen-free manufacturing standards?
Yes, RCLAMP3321P.TNT is fully RoHS-compliant and halogen-free, with lead-free terminal finish and UL 94V-0 rated molding compound. It meets WEEE requirements and carries no substance restrictions under REACH Annex XIV. The DFN-6 package uses environmentally compliant materials throughout, supporting green manufacturing and end-of-life recycling protocols.
RCLAMP3321P.TNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 13V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 25W
- Power Line Protection:
- No
- Applications:
- HDMI
- Capacitance @ Frequency:
- 0.22pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
RCLAMP3321P.TNT FAQ
1.How can I place an order for RCLAMP3321P.TNT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3321P.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 RCLAMP3321P.TNT reliable?
The price and inventory of RCLAMP3321P.TNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3321P.TNT is usually 5 days.
3.What payment methods are accepted for RCLAMP3321P.TNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3321P.TNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3321P.TNT?
RCLAMP3321P.TNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3321P.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 RCLAMP3321P.TNT?
For technical support, including RCLAMP3321P.TNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3321P.TNT requirements.
6.How does Aetrix verify that RCLAMP3321P.TNT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3321P.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 RCLAMP3321P.TNT meets industry standards.
7.What is the process for return or replacement of RCLAMP3321P.TNT?
All RCLAMP3321P.TNT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3321P.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 RCLAMP3321P.TNT part is unused and in its original packaging.
Return procedure for RCLAMP3321P.TNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3321P.TNT Tags
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