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Semtech Corporation RCLAMP0518PQTNT
- Part No.:
- RCLAMP0518PQTNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 9-UDFN
- Datasheet:
-
RCLAMP0518PQTNT.pdf
- Description:
- 8-LINE 5V 1.5PF 0.05R 10A ESD SG
- Quantity:
- Payment:
- Shipping:
Inventory:5,413
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Product details
Overview
RCLAMP0518PQTNT 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, 175pF junction capacitance, and DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB Type-C PD input protection.
For engineers reviewing the RCLAMP0518PQTNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance (20mΩ), minimal leakage (<600nA at 22V), and compatibility with industrial surge standards (±1kV, 1.2/50μs + 8/20μs).
Technical Context
RCLAMP0518PQTNT 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) across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions.
The device protects one line with bidirectional operation between IN (pins 4–6) and GND (pins 1–3), delivering 1120W peak pulse power (8/20μs) while maintaining <0.1Ω effective dynamic resistance. Its solid-state architecture avoids junction heating limitations typical of pn-junction TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage before leakage or conduction onset. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS=2Ω) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment interfaces. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF and industrial ESD requirements without external shielding. |
| Junction Capacitance | 175pF @ 22V, 1MHz - compatible with 22V power rails but not high-speed data lines (requires separate low-C TVS like RClamp3371ZC). |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping response and minimizes voltage overshoot during fast transients. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current handling and minimize inductance. |
| Pins 4, 5, 6 | IN | Protected line input - connects directly to VBus or power rail; parallel connection improves surge sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A range and −40°C to +125°C - eliminates derating for temperature or current, simplifying margin analysis. |
| Surge-rated FET architecture | Replaces traditional TVS junction with low-RDS(on) shunt switch - dissipates energy in channel rather than PN junction, avoiding thermal runaway. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz & 5kHz bursts) - protects against repetitive switching noise in industrial motor drives and PLCs. |
| Low leakage current | ≤600nA at 22V - prevents measurable power loss in always-on 22V systems such as remote sensors or battery-backed modules. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between connector and load switch (e.g., HS2950P), absorbing >95% of surge energy before it reaches downstream ICs. Use Value: Maintains 27.5V clamping at 125°C - avoids controller latch-up where conventional TVS would exceed 38V at same condition. |
Use Scenario: Safeguarding input terminals of e-fuse/load switches in programmable logic controllers, remote meters, and robotics power stages. IC Role / Device Role / Timing Role: Front-end transient shunt that limits voltage stress on internal MOSFET gate oxide and sense resistors during 1.2/50μs surges. Use Value: 40A capability and 20mΩ dynamic resistance prevent false trip or thermal failure during repeated 1kV surge events. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-powered IoT gateways subjected to field ESD and induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main DC input, operating in parallel with low-quiescent LDOs and PMICs. Use Value: 175pF capacitance avoids signal integrity issues on non-data paths, while ±30kV ESD rating eliminates need for secondary ESD staging. |
Use Scenario: Protecting 22V supercapacitor or LiFePO4 backup supplies in enterprise SSDs and NAS enclosures against hot-plug transients and board-level coupling. IC Role / Device Role / Timing Role: Clamping element placed immediately after connector, upstream of buck converters and charge management ICs. Use Value: Stable 28V clamping ensures backup supply remains within safe operating area during 8/20μs surges up to 40A without de-rating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same manufacturer, identical electrical specs and package; RCLAMP0518PQTNT is Semtech's alternate marking for TDS2211P per official ordering documentation. | Direct functional and mechanical replacement - validated in USB-C PD reference designs and industrial load switch schematics. | Select RCLAMP0518PQTNT when sourcing through authorized distributors using standard Semtech part numbering conventions. |
| SMAJ22A | Standard unidirectional TVS diode; 22V standoff, 35.5V clamping at 12.5A (8/20μs), 1.5Ω dynamic resistance, 1000W peak power. | Limited to lower-energy surges; clamping rises to >42V at 40A and increases with temperature - unsuitable for 22V PD controllers at elevated ambient. | Use SMAJ22A only in cost-sensitive, non-PD, ≤24V applications where 35.5V clamping margin is acceptable and thermal derating is managed. |
Compared with TDS2211P (identical device) and SMAJ22A (conventional TVS), RCLAMP0518PQTNT delivers stable 27.5V clamping across full current and temperature range - enabling robust 22V system design without conservative voltage margining or thermal compensation circuits.
Availability
RCLAMP0518PQTNT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power rails, and storage device backup supplies requiring stable component supply and guaranteed EOS protection performance.
Supply support for RCLAMP0518PQTNT 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 solutions.
RCLAMP0518PQTNT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where clamping stability and temperature independence are critical.
FAQ
What is the exact function of RCLAMP0518PQTNT in a circuit?
RCLAMP0518PQTNT functions as a transient diverting suppressor that actively shunts high-energy EOS events - including ESD, lightning-induced surges, and EFT bursts - from 22V power or I/O lines to ground. Unlike passive TVS diodes, it uses a triggered FET to maintain a near-constant 27.5–28V clamping voltage across 24–40A and −40°C to +125°C, making RCLAMP0518PQTNT ideal for protecting sensitive USB PD controllers and industrial load switches.
Is RCLAMP0518PQTNT pin-compatible with standard TVS diodes like SMAJ22A?
No, RCLAMP0518PQTNT is not pin-compatible with SMAJ22A. RCLAMP0518PQTNT uses a 6-pin DFN package with three parallel IN pins (4–6) and three parallel GND pins (1–3), whereas SMAJ22A is a 2-pin DO-214AC package. PCB layout, trace routing, and grounding strategy must be redesigned to accommodate RCLAMP0518PQTNT's multi-pin configuration and low-inductance layout requirements.
Does RCLAMP0518PQTNT require external bias or control signals to operate?
No, RCLAMP0518PQTNT operates autonomously without external bias, enable signals, or configuration. Its internal precision trigger circuit activates the shunt FET when transient voltage exceeds the breakdown threshold (~27.9V), and the device returns to high-impedance standby mode once the event subsides. This self-contained operation makes RCLAMP0518PQTNT drop-in deployable in existing 22V rail protection layouts.
Can RCLAMP0518PQTNT be used on high-speed data lines such as USB SuperSpeed or PCIe?
No, RCLAMP0518PQTNT is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on differential pairs operating above ~100MHz. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF); RCLAMP0518PQTNT is strictly intended for 22V power rail or low-frequency I/O protection.
What is the meaning of "RCLAMP" in the part number RCLAMP0518PQTNT?
"RCLAMP" is Semtech's product family prefix for transient protection devices emphasizing low clamping voltage and robust surge handling. In RCLAMP0518PQTNT, "05" indicates 5V-related legacy naming (not operational voltage), "18" denotes 18V-class heritage (though this variant is rated for 22V), and "PQTNT" specifies the DFN 1.6×1.6mm package with tape-and-reel packaging - confirming RCLAMP0518PQTNT as the commercial-grade marking for TDS2211P.
RCLAMP0518PQTNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 9-UDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 10A
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 1pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SGF2708N9
RCLAMP0518PQTNT FAQ
1.How can I place an order for RCLAMP0518PQTNT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0518PQTNT 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 RCLAMP0518PQTNT reliable?
The price and inventory of RCLAMP0518PQTNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0518PQTNT is usually 5 days.
3.What payment methods are accepted for RCLAMP0518PQTNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0518PQTNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0518PQTNT?
RCLAMP0518PQTNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0518PQTNT 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 RCLAMP0518PQTNT?
For technical support, including RCLAMP0518PQTNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0518PQTNT requirements.
6.How does Aetrix verify that RCLAMP0518PQTNT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0518PQTNT 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 RCLAMP0518PQTNT meets industry standards.
7.What is the process for return or replacement of RCLAMP0518PQTNT?
All RCLAMP0518PQTNT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0518PQTNT, 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 RCLAMP0518PQTNT part is unused and in its original packaging.
Return procedure for RCLAMP0518PQTNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0518PQTNT Tags
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