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Semtech Corporation RCLAMP1502B.TCT
- Part No.:
- RCLAMP1502B.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SC-75, SOT-416
- Datasheet:
-
RCLAMP1502B.TCT.pdf
- Description:
- TVS DIODE 15VWM 40VC SC75
- Quantity:
- Payment:
- Shipping:
Inventory:3,595
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Product details
Overview
RCLAMP1502B.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of single 15V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 24A peak pulse current (8/20μs), 22.5V clamping voltage at 24A, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP1502B.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature, low dynamic resistance (<25mΩ), DFN-6 package compatibility with high-density USB-C layouts, and compliance with IEC 61000-4-4 (±4kV EFT) and IEC 61000-4-5 (±1kV surge).
Technical Context
RCLAMP1502B.TCT 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 (22.5–23.0V) from −40°C to +125°C and across 1A–24A peak pulse current due to decreasing RDS(on).
The device implements a three-terminal architecture: Pins 4–6 serve as parallel-connected input terminals tied to the protected line, while Pins 1–3 form a low-inductance ground return path. Its solid-state design eliminates junction heating limitations, enabling stable energy dissipation without thermal derating over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 15 V - Maximum continuous DC operating voltage on protected line without leakage degradation or false triggering. |
| Clamping Voltage | 22.5 V at 24A (8/20μs) - Limits transient overvoltage to safe level for downstream 24V-tolerant controllers (e.g., USB PD ICs). |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Survives direct human-body-model ESD events without parametric shift or failure. |
| Junction Capacitance | 175 pF at 15 V, 1 MHz - Low enough for USB 2.0 signal integrity; not suitable for SuperSpeed (USB 3.x) lanes. |
| Dynamic Resistance | 25 mΩ - Enables flat clamping curve; reduces voltage overshoot during fast-rising transients (e.g., lightning-induced surges). |
| Peak Pulse Current | 24 A (8/20μs) - Meets IEC 61000-4-5 Level 3 surge immunity for industrial equipment and USB PD power inputs. |
| EFT Immunity | ±4 kV (5/50 ns, 100 kHz burst) - Withstands repetitive electrical fast transients common in motor-driven industrial environments. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Low-inductance, parallel-connected return path; all three must be soldered to maximize surge current handling and minimize ground bounce. |
| Pins 4, 5, 6 | Input (IN) | Parallel-connected protected line interface; connects directly to VBUS or high-side power rail; requires shortest possible trace to connector. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V across −40°C to +125°C and 1A–24A IPP - eliminates thermal derating and simplifies worst-case margin analysis. |
| FET-based shunt topology | Replaces PN-junction TVS with <0.025 Ω RDS(on) - dissipates surge energy in channel rather than junction, avoiding thermal runaway. |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) - supports robust protection in 24V industrial bus and USB PD 3.0 applications up to 100W. |
| Low-leakage operation | 600 nA max reverse leakage at 15 V - prevents battery drain in always-on IoT devices and maintains signal integrity on low-power rails. |
| Compact DFN layout | 1.6 mm × 1.6 mm footprint - saves >60% board area vs. SO-8 TVS solutions while enabling placement within 3 mm of USB-C receptacle. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting VBUS line in USB-C ports supporting up to 20V/5A PD negotiation against ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt clamp placed between connector and PD controller or load switch input. Use Value: Maintains 22.5V clamping at full 24A surge - stays below 24V damage threshold of common PD controllers (e.g., STUSB4500, CYPD3177) across temperature. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., TPS25940, RTQ2133) in remote meters and PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting transient diverter placed upstream of load switch FET gate driver and overvoltage protection circuitry. Use Value: Prevents latch-up or gate oxide rupture in load switches by limiting transient overvoltage to ≤23V - avoids costly field failures in unattended equipment. |
| IoT Edge Node Power Rail Protection | Storage Device 12–24V Bus Protection |
Use Scenario: Securing 15V auxiliary power rails in battery-backed smart sensors and gateway nodes exposed to ESD during field servicing or cable insertion. IC Role / Device Role / Timing Role: Standalone EOS protector on isolated DC-DC output feeding MCU, radio, or sensor subsystems. Use Value: Delivers ±30kV ESD immunity without adding series impedance or signal distortion - preserves low-noise performance of analog sensor interfaces. |
Use Scenario: Hardening 12V/24V power buses in NVMe SSD enclosures and enterprise HDD backplanes against system-level surges and connector arcing. IC Role / Device Role / Timing Role: High-current transient clamp on main power input before PMIC or local regulators. Use Value: Sustains 24A surge current without voltage sag - ensures uninterrupted operation of storage controllers during transient events per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V working voltage, 40A IPP, 27.5V clamping - higher voltage rating and surge capacity. | Targeted at 20–22V USB PD and industrial 24V systems requiring higher energy handling. | Select when protecting ≥20V rails where RCLAMP1502B.TCT's 15V VRWM is insufficient. |
| uClamp2411ZA | 24V working voltage, 12A IPP, 33V clamping - lower surge rating but optimized for CC/SBU lines. | Designed for low-capacitance (0.6pF) protection of USB-C configuration channel and sideband use lines. | Choose for CC/SBU protection only; not suitable as direct replacement for RCLAMP1502B.TCT on VBUS due to higher clamping and lower IPP. |
Compared with TDS2211P and uClamp2411ZA, RCLAMP1502B.TCT offers optimal balance of 15V system compatibility, 24A surge capability, and 22.5V clamping - making it the preferred choice for cost-sensitive, space-constrained USB-C PD input protection where 20V+ operation is unnecessary.
Availability
RCLAMP1502B.TCT 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 12–24V bus protection requiring stable component supply and long-term lifecycle support.
Supply support for RCLAMP1502B.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 high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.
RCLAMP1502B.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace traditional TVS diodes in high-reliability 12–24V power and interface protection applications demanding stable clamping and temperature resilience.
FAQ
What is the maximum continuous operating voltage for RCLAMP1502B.TCT?
RCLAMP1502B.TCT has a reverse stand-off voltage (VRWM) of 15 V, meaning it can continuously block up to 15 V DC without significant leakage or conduction. This makes RCLAMP1502B.TCT ideal for protecting 12V and 15V power rails in USB-C PD accessories and industrial control modules where overvoltage must be strictly limited.
How does RCLAMP1502B.TCT achieve stable clamping across temperature?
RCLAMP1502B.TCT uses a surge-rated FET and precision trigger circuit instead of a PN junction, resulting in near-constant clamping voltage (22.5–23.0 V) from −40°C to +125°C. Unlike standard TVS diodes whose clamping rises with temperature, RCLAMP1502B.TCT's FET-based architecture minimizes thermal drift - a critical advantage in automotive under-hood or industrial enclosure deployments.
Can RCLAMP1502B.TCT be used on USB SuperSpeed (SS) differential pairs?
No - RCLAMP1502B.TCT has 175 pF junction capacitance, which would severely degrade signal integrity on USB 3.x SuperSpeed lanes requiring <0.3 pF. For SS TX/RX lines, Semtech recommends RClamp3371ZC (0.18 pF). RCLAMP1502B.TCT is intended only for VBUS, CC, SBU, or low-speed power/data lines where capacitance is not signal-critical.
What is the recommended PCB layout for RCLAMP1502B.TCT?
Place RCLAMP1502B.TCT within 3 mm of the USB-C or industrial connector. Connect all three GND pins (1–3) to a solid ground plane using multiple vias, and tie all three IN pins (4–6) together with a short, wide trace. Avoid stubs or splits - this layout minimizes parasitic inductance and ensures full 24A surge current sharing across parallel terminals in RCLAMP1502B.TCT.
Is RCLAMP1502B.TCT RoHS and REACH compliant?
Yes - RCLAMP1502B.TCT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its DFN package uses UL 94V-0 rated molding compound and lead-free matte tin terminal finish, meeting global environmental and safety requirements for industrial and consumer electronics.
RCLAMP1502B.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SC-75, SOT-416
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 40V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-75 (SOT523)
RCLAMP1502B.TCT FAQ
1.How can I place an order for RCLAMP1502B.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP1502B.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 RCLAMP1502B.TCT reliable?
The price and inventory of RCLAMP1502B.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP1502B.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP1502B.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP1502B.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP1502B.TCT?
RCLAMP1502B.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP1502B.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 RCLAMP1502B.TCT?
For technical support, including RCLAMP1502B.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP1502B.TCT requirements.
6.How does Aetrix verify that RCLAMP1502B.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP1502B.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 RCLAMP1502B.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP1502B.TCT?
All RCLAMP1502B.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP1502B.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 RCLAMP1502B.TCT part is unused and in its original packaging.
Return procedure for RCLAMP1502B.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP1502B.TCT Tags
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