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Semtech Corporation RCLAMP3654PATCT
- Part No.:
- RCLAMP3654PATCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
RCLAMP3654PATCT.pdf
- Description:
- TVS DIODE 5.5VWM 30VC SLP1616P6
- Quantity:
- Payment:
- Shipping:
Inventory:5,731
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Product details
Overview
RCLAMP3654PATCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or data lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and ultra-low 20mΩ dynamic resistance - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the RCLAMP3654PATCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low capacitance (175pF @ 22V), DFN-6 package footprint compatibility, and FET-based shunt architecture versus conventional TVS diodes.
Technical Context
The RCLAMP3654PATCT implements a surge-rated MOSFET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events above ~25V breakdown. Unlike standard 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 across –40°C to +125°C with stable junction capacitance (175pF @ 1MHz, 22V) and reverse leakage (<600nA at 22V), enabling reliable protection in thermally demanding environments such as industrial equipment and USB PD power delivery circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 30V damage threshold of most 24V-rated controllers and load switches. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial ports. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards. |
| Junction Capacitance | 175pF @ 22V, 1MHz - low enough for DC power line protection without signal integrity impact. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast transients. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for all surge current - must be connected with low-inductance layout (multiple vias recommended). |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line - all three pins required to achieve full 40A rating and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Delivers flat clamping voltage across 24–40A range, unlike TVS diodes whose VC rises linearly with IPP. |
| Temperature-stable clamping | Clamps at 27.5–28V from –40°C to +125°C - eliminates thermal derating calculations for industrial designs. |
| Low dynamic resistance | 20mΩ ensures minimal IR drop during surge, preserving system-level voltage margin during fault events. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) supports repeated lightning-surge exposure in outdoor and factory-floor applications. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Primary EOS shunt device placed directly at connector, diverting surges before reaching PD controller or load switch. Use Value: Maintains clamping <28V across temperature and current - prevents latch-up or gate oxide damage in downstream 24V-rated ICs. | Use Scenario: Safeguarding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient clamp on VIN or EN lines, limiting voltage seen by internal FETs and control logic. Use Value: Prevents overvoltage-induced failure of load switch internal gate drivers and current sense amplifiers during 1kV/42Ω surge events. |
| IoT Edge Node Power Bus Protection | Remote Metering Equipment Interface Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors deployed in unshielded enclosures. IC Role / Device Role / Timing Role: Standalone EOS protector on DC input, operating without external bias or control signals. Use Value: Eliminates need for series impedance or RC filtering - preserves fast response (<1ns trigger) while reducing BOM count. | Use Scenario: Hardening RS-485 or CAN bus power inputs in utility meters subject to induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Common-mode clamp on VCC line feeding isolated interface ICs and microcontrollers. Use Value: Withstands repeated ±1kV (1.2/50μs) surges without parameter drift - ensures 10+ year field reliability per IEC 61000-4-5 Class 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs, identical DFN-6 package - differs only in marking code and reel quantity (3,000 pcs vs. 10,000 pcs). | No functional difference; used interchangeably in USB-C and industrial designs per Semtech documentation. | Select based on procurement volume and logistics preference - no design or layout change required. |
| SMAJ22A | Standard unidirectional TVS diode; higher clamping (~42V at 40A), 10× higher dynamic resistance (~200mΩ), no temperature stability guarantee. | Suitable only where clamping >35V is acceptable and thermal derating can be accommodated. | Use only if cost sensitivity outweighs clamping performance and temperature margin requirements. |
Compared with TDS2211P.C, RCLAMP3654PATCT offers identical protection performance and drop-in compatibility; versus SMAJ22A, it delivers 14.5V lower clamping, 10× lower dynamic resistance, and guaranteed flat response across temperature - critical for protecting modern 24V-rated power management ICs.
Availability
RCLAMP3654PATCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power buses, and remote metering equipment requiring stable component supply and long-term lifecycle support.
Supply support for RCLAMP3654PATCT 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 signal integrity.
RCLAMP3654PATCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power-line protection applications where clamping stability and surge endurance are critical.
FAQ
What is the exact clamping voltage of RCLAMP3654PATCT at 40A surge current?
RCLAMP3654PATCT clamps at 27.5–28V under 40A, 8/20μs surge conditions with 2Ω source impedance, as verified in the official datasheet (Rev 2.5, p.2). This value remains stable across –40°C to +125°C, distinguishing it from conventional TVS devices whose clamping rises with temperature and current.
Is RCLAMP3654PATCT pin-compatible with TDS2211P.C?
Yes - RCLAMP3654PATCT and TDS2211P.C share identical DFN-6 pinout (pins 1–3 = GND, pins 4–6 = IN), mechanical dimensions (1.6mm × 1.6mm × 0.55mm), and electrical specifications. They differ only in part marking and packaging quantity, making them functionally and physically interchangeable.
Does RCLAMP3654PATCT require external bias or control signals to operate?
No - RCLAMP3654PATCT is a fully autonomous transient suppressor. Its internal trigger circuit activates the shunt FET when input voltage exceeds ~25V, requiring no external power, enable signal, or configuration. It operates immediately upon connection to a 22V line with no startup delay.
Can RCLAMP3654PATCT be used on high-speed data lines like USB SuperSpeed or PCIe?
No - with 175pF junction capacitance at 22V, RCLAMP3654PATCT is intended for DC power or low-frequency signal lines (e.g., USB PD VBUS, load switch EN). For high-speed data lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) instead.
What is the maximum continuous operating voltage for RCLAMP3654PATCT?
RCLAMP3654PATCT has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks up to 22V DC without conduction. Operating continuously above this voltage risks premature triggering or accelerated degradation; it must be applied only in 22V nominal systems.
RCLAMP3654PATCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-UFDFN Exposed Pad
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 3
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- Yes
- Applications:
- USB OTG
- Capacitance @ Frequency:
- 0.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1616P6 (1.6x1.6)
RCLAMP3654PATCT FAQ
1.How can I place an order for RCLAMP3654PATCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3654PATCT 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 RCLAMP3654PATCT reliable?
The price and inventory of RCLAMP3654PATCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3654PATCT is usually 5 days.
3.What payment methods are accepted for RCLAMP3654PATCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3654PATCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3654PATCT?
RCLAMP3654PATCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3654PATCT 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 RCLAMP3654PATCT?
For technical support, including RCLAMP3654PATCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3654PATCT requirements.
6.How does Aetrix verify that RCLAMP3654PATCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3654PATCT 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 RCLAMP3654PATCT meets industry standards.
7.What is the process for return or replacement of RCLAMP3654PATCT?
All RCLAMP3654PATCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3654PATCT, 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 RCLAMP3654PATCT part is unused and in its original packaging.
Return procedure for RCLAMP3654PATCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3654PATCT Tags
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