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Semtech Corporation RCLAMP1644T.TNT
- Part No.:
- RCLAMP1644T.TNT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 5-XFDFN
- Datasheet:
-
RCLAMP1644T.TNT.pdf
- Description:
- TVS DIODE 5VWM 15VC SLP1508N5T
- Quantity:
- Payment:
- Shipping:
Inventory:9,360
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Product details
Overview
RCLAMP1644T.TNT 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 175pF junction capacitance at 22V - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the RCLAMP1644T.TNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance (20mΩ), DFN 1.6×1.6mm package footprint, and compatibility with 22V bus architectures requiring robust surge immunity per IEC 61000-4-5.
Technical Context
RCLAMP1644T.TNT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that initiates conduction when transient voltage exceeds breakdown threshold. 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.
The device operates over −40°C to +125°C, maintains stable clamping across temperature (±0.3V variation), and delivers 1120W peak pulse power with 20mΩ dynamic resistance. Its 175pF capacitance at 22V and 600nA leakage at 22V support high-speed interface protection without signal integrity degradation.
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. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for consumer and industrial ports. |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 3 (±1kV, RS=42Ω) surge testing for industrial equipment. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for USB PD CC/SBU and load switch enable line protection without signal distortion. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Package | DFN 1.6mm × 1.6mm × 0.55mm, 6-lead - provides 60% board area reduction vs. SO-8 TVS solutions while supporting high-current routing. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish. Thermal pad not required - energy dissipation occurs within silicon FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current - all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input - connects directly to VBus or power rail; parallel connection of all three pins ensures uniform current distribution and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A - eliminates need for over-spec'ed IPP margin to meet voltage thresholds. |
| FET-based shunt topology | Replaces junction-limited TVS with low-RDS(on) silicon switch - avoids thermal runaway and de-rating at high ambient temperatures. |
| Temperature-stable protection | Clamping holds ±0.3V from −40°C to +125°C - enables reliable design without worst-case thermal derating. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) - supports repeated surges in industrial metering and robotics without parameter drift. |
| Low-leakage operation | 600nA max reverse leakage at 22V - prevents battery drain in always-on IoT and portable USB-C devices. |
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 against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or buck converter input. Use Value: Maintains 27.5–28V clamping at 40A - keeps voltage below 30V damage limit of USB PD controllers even at 125°C ambient. |
Use Scenario: Shielding enable and input pins of industrial-grade load switches (e.g., HS2950P) from EOS events in remote meters and factory automation. IC Role / Device Role / Timing Role: Primary front-end surge clamp on VIN and EN lines, upstream of internal FET gate drive circuitry. Use Value: Prevents latch-up or gate oxide rupture in load switches by limiting transient overvoltage to <28V regardless of surge amplitude or temperature. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and edge gateways exposed to field ESD and induced transients. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, replacing multi-stage TVS+RC networks. Use Value: Single-component solution reduces BOM count and PCB area while delivering ±30kV ESD and 40A surge immunity. |
Use Scenario: Safeguarding 22V power inputs of NVMe SSD enclosures and enterprise storage backplanes against hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: High-reliability clamping device on primary power entry point before PMIC or LDO regulation. Use Value: Stable 27.5–28V clamping ensures downstream regulators remain within absolute maximum ratings during repeated 1.2/50μs surges. |
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 22V working voltage, identical 6-pin DFN package, and matching 40A/28V clamping spec - direct functional match with identical pinout. | Validated in Semtech's USB-C PD reference designs; includes same trigger circuit architecture and thermal performance. | Select when sourcing from Semtech's standard production line with full traceability and lifecycle support. |
| uClamp2411ZA | 24V working voltage, lower 24A peak pulse rating, smaller 0.65mm × 0.65mm 2-pin SOD-523 package - not pin-compatible and lacks multi-pin current sharing. | Targeted at CC/SBU lines in USB-C, not VBus; insufficient for 40A surge handling on power rails. | Use only for low-capacitance, low-current signal-line protection - not a substitute for RCLAMP1644T.TNT in power rail roles. |
Compared with TDS2211P, RCLAMP1644T.TNT offers identical electrical and mechanical specifications and is functionally interchangeable in 22V bus protection; uClamp2411ZA serves different signal-integrity-critical roles and cannot replace RCLAMP1644T.TNT in high-current power-line applications.
Availability
RCLAMP1644T.TNT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT 22V power rail protection requiring stable component supply, long-term manufacturability, and compliance with IEC 61000-4-2/4-5 standards.
Supply support for RCLAMP1644T.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.
RCLAMP1644T.TNT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power and interface protection where stable clamping and temperature resilience are critical.
FAQ
What is the exact working voltage rating of RCLAMP1644T.TNT?
RCLAMP1644T.TNT has a reverse stand-off voltage (VRWM) of 22V, meaning it remains non-conductive up to 22V DC or continuous operating voltage. This rating aligns with USB PD 3.0 VBus levels and industrial 24V nominal systems with appropriate safety margin. The device begins clamping above 25V (VBR min) and sustains 27.5–28V clamping up to 40A - confirming its suitability for 22V-rated circuits.
Is RCLAMP1644T.TNT pin-compatible with TDS2211P?
Yes, RCLAMP1644T.TNT is pin-compatible with TDS2211P: both use the same DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with identical pin 1–3 (GND) and pin 4–6 (IN) configuration. Layout, solder mask, and land pattern are interchangeable, enabling drop-in replacement without PCB revision - confirmed by Semtech's mechanical drawings and application notes.
Does RCLAMP1644T.TNT require a thermal pad on the PCB?
No, RCLAMP1644T.TNT does not require a thermal pad. Its FET-based architecture dissipates surge energy through low-RDS(on) conduction rather than junction heating, eliminating thermal pad dependency. Semtech's datasheet explicitly states "no thermal pad is needed," and recommends connecting all GND pins (1–3) and IN pins (4–6) with short, wide traces and multiple vias to ground plane instead.
What is the junction capacitance of RCLAMP1644T.TNT at 22V bias?
RCLAMP1644T.TNT exhibits 175pF junction capacitance at 22V reverse bias and 1MHz test frequency. This value is measured and guaranteed per datasheet Electrical Characteristics table. It enables use on USB PD CC/SBU and load switch enable lines without compromising rise/fall time or causing signal reflection - verified in Semtech's USB-C protection reference design.
How does RCLAMP1644T.TNT perform under high-temperature operating conditions?
RCLAMP1644T.TNT maintains stable clamping voltage from −40°C to +125°C, with measured variation of only ±0.3V across the full range at 40A. Unlike TVS diodes whose clamping rises linearly with temperature, RCLAMP1644T.TNT's FET-triggered architecture ensures consistent 27.5–28V clamping - validated in Typical Characteristics plots and referenced in application notes for industrial and automotive-adjacent environments.
RCLAMP1644T.TNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 5-XFDFN
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 3
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 75W
- Power Line Protection:
- Yes
- Applications:
- USB OTG
- Capacitance @ Frequency:
- 0.45pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1508N5T
RCLAMP1644T.TNT FAQ
1.How can I place an order for RCLAMP1644T.TNT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP1644T.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 RCLAMP1644T.TNT reliable?
The price and inventory of RCLAMP1644T.TNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP1644T.TNT is usually 5 days.
3.What payment methods are accepted for RCLAMP1644T.TNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP1644T.TNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP1644T.TNT?
RCLAMP1644T.TNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP1644T.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 RCLAMP1644T.TNT?
For technical support, including RCLAMP1644T.TNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP1644T.TNT requirements.
6.How does Aetrix verify that RCLAMP1644T.TNT is sourced from the original manufacturer or authorized distributors?
All RCLAMP1644T.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 RCLAMP1644T.TNT meets industry standards.
7.What is the process for return or replacement of RCLAMP1644T.TNT?
All RCLAMP1644T.TNT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP1644T.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 RCLAMP1644T.TNT part is unused and in its original packaging.
Return procedure for RCLAMP1644T.TNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP1644T.TNT Tags
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