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Semtech Corporation RCLAMP0503F.TCT
- Part No.:
- RCLAMP0503F.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
RCLAMP0503F.TCT.pdf
- Description:
- TVS DIODE 5VWM 25VC SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,396
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Product details
Overview
RCLAMP0503F.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 5V I/O or power lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 7.5V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C in a 1.0mm × 1.0mm × 0.55mm DFN-6 package.
For engineers reviewing the RCLAMP0503F.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, validated pin mapping, real-world USB PD and load switch protection use cases, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
RCLAMP0503F.TCT uses a surge-rated FET as its primary protection element, activated by an integrated precision trigger circuit that turns on the shunt path when voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across the full rated peak pulse current range (up to 24A) due to the FET's decreasing RDS(on) under surge conditions.
The device features three input terminals (pins 4–6) and three ground terminals (pins 1–3), requiring all six pins to be connected for full 24A (8/20μs) surge handling. Its 175pF junction capacitance at 5V reverse bias and 130nA leakage at VRWM = 5V support high-speed data line integration without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 5 V - Maximum continuous DC operating voltage before clamping activation; matches standard USB 2.0/3.x and low-voltage logic rails. |
| Clamping Voltage (VC) | 7.5 V @ IPP = 24A (8/20μs) - Limits transient overvoltage to safe levels for 5V-tolerant ICs like USB controllers and PMICs. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Exceeds Level 4 immunity requirements for consumer and industrial end equipment. |
| Peak Pulse Current | 24 A (8/20μs) - Supports robust protection against lightning-induced surges per IEC 61000-4-5 in compact form factor. |
| Junction Capacitance | 175 pF @ VR = 5 V, 1 MHz - Low enough for USB 2.0 signal integrity; not suitable for USB 3.x SuperSpeed lanes. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping behavior; reduces voltage overshoot during fast-rising transients compared to TVS diodes. |
| Operating Temperature | –40°C to +125°C - Validated for automotive cabin, industrial control, and high-ambient embedded applications. |
Pinout & Package
Package: DFN-6 (1.0 mm × 1.0 mm × 0.55 mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging.
| 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 sharing and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input; connects directly to USB VBUS, power rail, or I/O trace; all three pins conduct surge current in parallel. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diodes with active shunt switching, delivering stable clamping independent of surge amplitude or temperature. |
| Ultra-low dynamic resistance | 20 mΩ ensures minimal IR drop during 24A surges, limiting clamping voltage rise to <0.5V above trigger threshold. |
| Three-terminal input architecture | Parallel connection of pins 4–6 lowers effective series inductance and distributes thermal stress across bond wires and die area. |
| Low leakage & capacitance | 130 nA max IR at 5V and 175 pF enable integration on 5V power rails and low-speed data lines without loading or power loss. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the 5V VBUS line in USB Type-C receptacles where hot-plug events, cable discharge, and ESD can exceed 30kV. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and USB PD controller or load switch input. Use Value: Clamps to 7.5V at 24A, preventing damage to 5.5V-max tolerant PD controllers while maintaining signal integrity on adjacent CC/SBU lines. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., TPS229xx, AP22653) exposed to 1kV surge events in metering or robotics. IC Role / Device Role / Timing Role: Primary front-end surge clamp upstream of the load switch FET gate driver and overvoltage protection circuitry. Use Value: Limits transient voltage to ≤7.5V, keeping it below the 8–10V absolute maximum rating of internal switch gate oxides and OVP comparators. |
| Smartphone/Tablet USB Charging Port | IoT Sensor Hub Power Rail Protection |
Use Scenario: Securing the 5V charging input on portable devices subject to repeated human-body-model ESD and accidental short-to-VBUS events. IC Role / Device Role / Timing Role: Standalone EOS protector on the main system power rail, placed immediately after the USB connector. Use Value: Delivers ±30kV ESD immunity without degrading efficiency or generating excessive heat during normal operation (130nA leakage). |
Use Scenario: Shielding 5V power inputs of battery-powered sensor hubs in smart building or agricultural IoT nodes from induced surges on long PCB traces or external connectors. IC Role / Device Role / Timing Role: Compact, low-profile transient suppressor integrated into space-constrained 2-layer PCBs with limited thermal mass. Use Value: 1.0mm × 1.0mm footprint saves >60% board area versus SOD-323 TVS alternatives while sustaining 24A surge capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DPYR | Quad-channel 5V TVS array (0.5pF/channel); lower clamping (~12V @ 4A), higher ESD rating (±12kV), no FET-based regulation. | Designed for multi-line protection (e.g., USB D+/D− + VBUS + GND); unsuitable for single-line 24A surge duty. | Select when protecting multiple low-capacitance signal lines simultaneously; avoid for high-current VBUS-only protection. |
| SMAJ5.0A | Unidirectional 5V TVS diode; 400W peak power; clamps at ~12.5V @ 10A; larger SMA package (4.5mm × 2.7mm). | Higher clamping voltage limits use with 5.5V-max ICs; requires more PCB area and has slower response than FET-triggered TDS. | Choose only if cost is primary constraint and 12.5V clamping is acceptable; not recommended for USB PD or tight-margin designs. |
Compared with TPD4E001DPYR and SMAJ5.0A, RCLAMP0503F.TCT offers superior clamping stability (7.5V vs. ≥12V), higher surge current capacity (24A vs. ≤10A), and 75% smaller footprint-making it optimal for space- and performance-critical 5V bus protection where precise voltage limiting is required.
Availability
RCLAMP0503F.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, smartphone charging ports, and IoT sensor hub power rails requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for RCLAMP0503F.TCT 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 protection, signal integrity, and power management.
RCLAMP0503F.TCT belongs to Semtech's RClamp® family of transient suppressors, engineered specifically for high-fidelity, low-clamping protection of high-speed and power-sensitive interfaces in consumer, industrial, and computing applications.
FAQ
What is the maximum continuous operating voltage for RCLAMP0503F.TCT?
RCLAMP0503F.TCT has a reverse stand-off voltage (VRWM) of 5 V, meaning it can safely operate continuously at up to 5 V DC without triggering clamping action. This matches standard USB 2.0/3.x VBUS and logic-supply rails. Exceeding 5 V risks premature conduction and accelerated wear. The device's 7.5 V clamping voltage ensures headroom for transient events while staying within the 5.5 V absolute maximum rating of most protected ICs.
How does RCLAMP0503F.TCT differ from standard TVS diodes in surge response?
RCLAMP0503F.TCT uses a triggered FET architecture instead of a passive PN-junction. When a transient exceeds the trigger threshold, the internal circuit activates the shunt FET, whose RDS(on) drops sharply-yielding near-constant 7.5 V clamping from 1A to 24A. In contrast, TVS diodes exhibit linear VC = VBR + IPP × RDYN behavior, causing clamping voltage to rise significantly with current. This makes RCLAMP0503F.TCT more predictable in high-energy scenarios.
Can RCLAMP0503F.TCT be used on USB 3.x SuperSpeed differential pairs?
No. RCLAMP0503F.TCT has 175 pF junction capacitance at 5 V, which would severely degrade signal integrity on USB 3.x (5 Gbps) differential lanes requiring <0.3 pF per line. It is intended for single-ended 5V power or low-speed signal lines (e.g., USB 2.0 D+/D−, CC, SBU). For SuperSpeed protection, Semtech recommends RClamp3371ZC (0.22 pF) or similar ultra-low-capacitance arrays.
What is the correct PCB layout practice for RCLAMP0503F.TCT?
All three IN pins (4–6) must be tied together with a short, wide copper trace to the protected line; all three GND pins (1–3) must connect to a solid ground plane using multiple vias. Place RCLAMP0503F.TCT within 3 mm of the connector entry point to minimize inductive coupling. Avoid stubs or tees-use daisy-chain or star routing. Thermal relief is unnecessary; the device dissipates energy internally, not through a thermal pad.
Is RCLAMP0503F.TCT compliant with automotive AEC-Q200?
No. RCLAMP0503F.TCT is qualified for industrial temperature range (–40°C to +125°C) and meets IEC 61000-4-2/4-4/4-5, but it is not AEC-Q200 stress-tested or certified. For automotive applications requiring AEC-Q200 qualification, Semtech offers the TDS2211P (22V variant) and other Q200-qualified TDS parts-RCLAMP0503F.TCT should be used only in consumer, computing, and industrial end equipment.
RCLAMP0503F.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 6A (8/20µs)
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- Yes
- Applications:
- USB OTG
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
RCLAMP0503F.TCT FAQ
1.How can I place an order for RCLAMP0503F.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0503F.TCT 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 RCLAMP0503F.TCT reliable?
The price and inventory of RCLAMP0503F.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0503F.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0503F.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0503F.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0503F.TCT?
RCLAMP0503F.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0503F.TCT 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 RCLAMP0503F.TCT?
For technical support, including RCLAMP0503F.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0503F.TCT requirements.
6.How does Aetrix verify that RCLAMP0503F.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0503F.TCT 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 RCLAMP0503F.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0503F.TCT?
All RCLAMP0503F.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0503F.TCT, 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 RCLAMP0503F.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0503F.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0503F.TCT Tags
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