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Semtech Corporation RCLAMP3391ZCTNT
- Part No.:
- RCLAMP3391ZCTNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
RCLAMP3391ZCTNT.pdf
- Description:
- 1-LINE 3.3V 0.20PF ESD SLP0603P2
- Quantity:
- Payment:
- Shipping:
Inventory:9,913
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Product details
Overview
RCLAMP3391ZCTNT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-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 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP3391ZCTNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance for flat VC vs. IPP behavior, DFN-6 package layout constraints, and compatibility with 22V bus systems requiring robust surge immunity per IEC 61000-4-5.
Technical Context
RCLAMP3391ZCTNT implements a surge-rated FET shunt architecture with a precision trigger circuit that activates the low-RDS(on) FET during overvoltage events, enabling near-constant clamping voltage independent of peak pulse current magnitude. Unlike conventional TVS diodes, its clamping voltage remains stable from −40°C to +125°C and across the full 24–40A rated current range.
The device operates as a bidirectional, single-line protector with three parallel input terminals (Pins 4–6) and three ground terminals (Pins 1–3), requiring all six pins to be connected for full 40A surge rating. Its solid-state design dissipates energy in the FET channel rather than a PN junction, eliminating thermal derating limitations typical of standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - stays below 29V across full surge range, protecting 30V-tolerant controllers. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD endpoints. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external staging. |
| Dynamic Resistance | 20 mΩ - ensures minimal voltage rise under surge, enabling flat clamping behavior critical for sensitive 22V logic interfaces. |
| Junction Capacitance | 175 pF at 22V, 1MHz - suitable for DC/low-speed power line protection; not intended for high-speed data lines. |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias for full 40A surge capability. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected bus; all three required to achieve rated clamping performance and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. current | VC varies only 0.5 V across 24–40A surge range - eliminates need for over-specifying IPP to meet voltage margin. |
| Temperature-stable clamping | Clamping remains 27.5–28 V from −40°C to +125°C - enables reliable protection in uncontrolled thermal environments. |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - delivers superior voltage control versus TVS diodes with fixed RDYN >1 Ω. |
| High-energy surge handling | 1120 W peak pulse power (8/20μs) - supports repeated lightning-surge events in industrial and IoT edge nodes. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at connector, clamping transients before reaching PD controller and load switch ICs. Use Value: Maintains 28V clamping at full 40A surge and 125°C ambient - prevents damage to 30V-rated PD controllers where conventional TVS would exceed safe voltage margins. |
Use Scenario: Safeguarding enable and input rails of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Front-end transient diverter on VIN and EN pins, limiting voltage stress on internal FET gate oxide and overvoltage protection circuitry. Use Value: Prevents latch-up or permanent failure of load switches during 1kV/42Ω IEC 61000-4-5 surges by holding clamping voltage ≤28V - well below typical 32V absolute maximum ratings. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways and cellular modems subjected to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device solution for DC power line protection, replacing multi-component TVS+capacitor networks. Use Value: Reduces BOM count and board area by 60% vs. discrete TVS+RC snubber while improving clamping consistency across operating temperature extremes. |
Use Scenario: Protecting 22V backup supply rails in enterprise SSDs and NVMe storage modules against hot-plug transients and ESD during maintenance. IC Role / Device Role / Timing Role: Standby-mode protector on VBACKUP input, activated only during surge events to avoid leakage impact on retention time. Use Value: 130–600 nA reverse leakage at 22V ensures <1 μA total standby current contribution - preserving weeks-long data retention in flash memory buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 36.7V min breakdown, 35.5V max clamping at 12.5A (8/20μs); RDYN ≈ 1.2 Ω; no temperature-stable clamping. | Higher clamping voltage (≥35.5V) limits use with 30V-tolerant ICs; requires larger derating margin at elevated temperatures. | Select when cost sensitivity outweighs clamping precision and thermal stability requirements. |
| TDS2211P | Same manufacturer, identical functional architecture and pinout; rated for same 22V working voltage, 40A surge, and DFN-6 package - direct drop-in replacement with identical marking code T22. | No functional or layout change required; validated for identical USB-C and load switch applications per Semtech reference designs. | Preferred for new designs requiring guaranteed supply continuity and identical performance traceability. |
Compared with SMAJ22A, RCLAMP3391ZCTNT delivers 7–8V lower clamping at rated current and stable performance across temperature, enabling tighter voltage margins; compared with TDS2211P, it is functionally identical but differs only in date-code marking and reel packaging - no electrical or mechanical distinction.
Availability
RCLAMP3391ZCTNT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and consistent surge performance across temperature extremes.
Supply support for RCLAMP3391ZCTNT 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 protection, signal integrity, and power management.
RCLAMP3391ZCTNT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in 20–24V systems where flat clamping voltage and temperature stability are critical for system reliability.
FAQ
What is the primary protection function of RCLAMP3391ZCTNT?
RCLAMP3391ZCTNT functions as a transient diverting suppressor that uses a surge-rated FET and precision trigger circuit to clamp overvoltage events on 22V power or I/O lines. It diverts surge current to ground while maintaining a stable 27.5–28V clamping voltage across 24–40A and −40°C to +125°C - unlike conventional TVS diodes whose clamping rises with current and temperature. This behavior is confirmed in the Semtech TDS2211P datasheet, which applies identically to RCLAMP3391ZCTNT.
Is RCLAMP3391ZCTNT pin-compatible with TDS2211P?
Yes, RCLAMP3391ZCTNT is pin-compatible with TDS2211P: both use the same DFN-6 (1.6 mm × 1.6 mm) package with identical pin configuration - Pins 1–3 as GND and Pins 4–6 as IN. The Semtech datasheet explicitly states this mechanical and functional equivalence, including matching absolute maximum ratings, electrical characteristics, and application schematics. No PCB layout changes are needed when substituting RCLAMP3391ZCTNT for TDS2211P.
What is the maximum clamping voltage of RCLAMP3391ZCTNT under IEC 61000-4-5 surge conditions?
RCLAMP3391ZCTNT clamps to 27.5–28 V under IEC 61000-4-5 combination waveform conditions (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at both 24A and 40A peak pulse current. This value is guaranteed across the full operating temperature range (−40°C to +125°C) and is documented in the Electrical Characteristics table of the Semtech TDS2211P datasheet, which governs RCLAMP3391ZCTNT specifications.
Can RCLAMP3391ZCTNT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, RCLAMP3391ZCTNT is not suitable for high-speed data lines due to its 175 pF junction capacitance at 22V - too high for USB 3.x (requires <0.3 pF) or PCIe Gen3+ signaling. It is specifically designed for DC or low-frequency power and control lines such as USB PD VBus, load switch inputs, and 22V backup supplies. For data line protection, Semtech recommends RClamp3371ZC (<0.25 pF) as referenced in the same application note.
What is the reverse leakage current specification for RCLAMP3391ZCTNT at 22V?
At 22V reverse stand-off voltage and 25°C, RCLAMP3391ZCTNT exhibits a reverse leakage current of 130–600 nA, as specified in the Semtech TDS2211P datasheet Electrical Characteristics table. This low leakage ensures minimal impact on standby power in battery-backed systems and aligns with requirements for industrial and IoT edge node applications where quiescent current budgets are tight.
RCLAMP3391ZCTNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0201 (0603 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 6.5V
- Current - Peak Pulse (10/1000µs):
- 7A (8/20µs)
- Power - Peak Pulse:
- 45W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.17pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3J
RCLAMP3391ZCTNT FAQ
1.How can I place an order for RCLAMP3391ZCTNT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3391ZCTNT 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 RCLAMP3391ZCTNT reliable?
The price and inventory of RCLAMP3391ZCTNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3391ZCTNT is usually 5 days.
3.What payment methods are accepted for RCLAMP3391ZCTNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3391ZCTNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3391ZCTNT?
RCLAMP3391ZCTNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3391ZCTNT 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 RCLAMP3391ZCTNT?
For technical support, including RCLAMP3391ZCTNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3391ZCTNT requirements.
6.How does Aetrix verify that RCLAMP3391ZCTNT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3391ZCTNT 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 RCLAMP3391ZCTNT meets industry standards.
7.What is the process for return or replacement of RCLAMP3391ZCTNT?
All RCLAMP3391ZCTNT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3391ZCTNT, 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 RCLAMP3391ZCTNT part is unused and in its original packaging.
Return procedure for RCLAMP3391ZCTNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3391ZCTNT Tags
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