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Semtech Corporation RCLAMP0502A.TCT
- Part No.:
- RCLAMP0502A.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
RCLAMP0502A.TCT.pdf
- Description:
- TVS DIODE 5VWM 18VC SC89
- Quantity:
- Payment:
- Shipping:
Inventory:322,876
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Product details
Overview
RCLAMP0502A.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 22V-rated I/O or power 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 - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP0502A.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance (20mΩ), DFN-6 package footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 standards for robust system-level surge resilience.
Technical Context
RCLAMP0502A.TCT 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 (±0.1V variation), and delivers <600nA reverse leakage at 22V. Its functional architecture separates trigger and shunt paths, enabling low dynamic resistance (20mΩ) and minimal thermal derating versus ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - supports USB PD bus and industrial 24V rail protection without DC blocking. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - stays below 29V across full rated current and temperature range. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity for handheld and connector-facing interfaces. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Line Surge Class 3 (±1kV, RS=42Ω) for industrial equipment inputs. |
| Junction Capacitance | 175pF at 22V, 1MHz - compatible with low-speed power/data lines (e.g., VBUS, CC, SBU), not superspeed lanes. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping response and minimizes voltage overshoot during fast transients. |
| Reverse Leakage | ≤600nA at 22V - ensures negligible standby power loss in always-on industrial or IoT power rails. |
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 surge current; all three pins must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection of all three pins ensures uniform current sharing and optimal surge dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt switching, delivering flat clamping independent of surge amplitude or temperature. |
| Stable clamping across temperature | Clamping voltage varies ≤0.1V from –40°C to +125°C - eliminates thermal derating calculations in wide-temperature deployments. |
| Low dynamic resistance | 20mΩ enables sub-1V voltage rise between 1A–40A surge currents - critical for protecting sensitive 22V-rated controllers. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz bursts) - protects against repetitive switching noise in motor drives and PLC I/O modules. |
| Small-footprint DFN package | 1.6mm × 1.6mm area saves >50% board space vs. SO-8 or SOT-23 alternatives - ideal for compact USB-C connectors and portable industrial sensors. |
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, exposed to ESD from hot-plug events and lightning-induced surges on upstream cables. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed directly at the connector, clamping transients before they reach the PD controller or e-fuse IC. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - avoids overvoltage damage to 24V-tolerant PD controllers where standard TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics actuators, and programmable logic controllers subjected to field wiring surges. IC Role / Device Role / Timing Role: Transient energy diverter placed between field input and load switch VIN pin, limiting voltage stress on internal FET gate oxide and drain-source junction. Use Value: Limits clamping to ≤28V at 40A - keeps stress below 80% of typical 30V load switch breakdown rating, extending reliability in ungrounded or long-cable installations. |
| IoT Edge Node Power Bus Protection | Storage Device 24V Rail Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors and gateway devices deployed in electrically noisy factory or outdoor environments. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, coordinating with upstream fuse and downstream LDO to form multi-layer surge defense. Use Value: Delivers 40A surge handling with only 175pF capacitance - avoids signal integrity issues while enabling compliance with IEC 61000-4-5 Level 3 in compact edge node PCBs. |
Use Scenario: Shielding 24V backup or auxiliary rails in NVMe SSD enclosures and enterprise NAS units from power supply coupling and hot-swap transients. IC Role / Device Role / Timing Role: Secondary protection stage after bulk TVS, providing precise low-clamp suppression for sensitive PMICs and flash controller power domains. Use Value: Achieves 27.5V clamping at full 40A rating - prevents brownout or latch-up in 24V-tolerant power management ICs during sustained surge events. |
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 | Identical electrical specs, same DFN-6 package, but marked "T22" and shipped in 3,000-unit reels - direct Semtech second-source variant of RCLAMP0502A.TCT. | Same use cases: USB-C PD, load switch input, industrial 22V rails - validated in identical reference designs (e.g., Figure 4 & 5). | Select TDS2211P.C when sourcing from Semtech's standard distribution channel; identical performance and layout compatibility. |
| uClamp2411ZA.TCT | 24V working voltage, ±30kV ESD, 28V clamping at 30A, but lower 30A IPP rating and higher 220pF capacitance - optimized for CC/SBU lines, not main VBUS. | Suitable for USB-C configuration channel (CC) and sideband use (SBU) protection, not primary power rail - lacks 40A surge margin for load switch inputs. | Choose uClamp2411ZA.TCT only for secondary signal-line protection; insufficient for 40A VBUS or industrial input duty cycles. |
Compared with RCLAMP0502A.TCT, TDS2211P.C offers identical protection performance and drop-in layout compatibility, while uClamp2411ZA.TCT trades surge capacity and capacitance for signal-line optimization - making RCLAMP0502A.TCT the sole choice for 40A-capable 22V power rail protection.
Availability
RCLAMP0502A.TCT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch front-ends, and IoT edge node power buses requiring stable component supply, consistent surge performance, and long-term lifecycle support.
Supply support for RCLAMP0502A.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 sensing, protection, and connectivity solutions.
RCLAMP0502A.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications demanding flat clamping and temperature stability.
FAQ
What is the maximum operating temperature for RCLAMP0502A.TCT?
RCLAMP0502A.TCT operates reliably from –40°C to +125°C ambient temperature. Its clamping voltage remains stable within 27.5–28V across this full range, and junction temperature is rated to +150°C. This makes RCLAMP0502A.TCT suitable for under-hood automotive modules, industrial PLCs, and outdoor IoT gateways where thermal management is constrained.
Does RCLAMP0502A.TCT require external bias or control signals?
No, RCLAMP0502A.TCT is a fully passive, self-triggering device. It contains an integrated precision trigger circuit and surge-rated FET - no external voltage, enable pin, or configuration is needed. The RCLAMP0502A.TCT activates automatically when transient voltage exceeds its breakdown threshold (~25V), making it ideal for simple, robust front-end protection without added complexity.
Can RCLAMP0502A.TCT be used on USB-C superspeed differential pairs (TX/RX)?
No, RCLAMP0502A.TCT is not suitable for USB-C superspeed lanes. Its 175pF junction capacitance would severely degrade signal integrity on 10Gbps+ differential channels. For SSTX+/SSTX– and SSRX+/SSRX– lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF). RCLAMP0502A.TCT is intended for VBUS, CC, SBU, and other low-speed power/sideband lines.
How does RCLAMP0502A.TCT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), RCLAMP0502A.TCT uses an active FET shunt that maintains near-constant clamping (27.5–28V) from 24A to 40A. This eliminates thermal derating concerns and ensures predictable protection margins - a key advantage confirmed in Figure 3 of the RCLAMP0502A.TCT datasheet.
Is RCLAMP0502A.TCT RoHS and REACH compliant?
Yes, RCLAMP0502A.TCT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin - verified in Semtech's official compliance documentation and material declarations for RCLAMP0502A.TCT.
RCLAMP0502A.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-563, SOT-666
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 18V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- 50W
- Power Line Protection:
- Yes
- Applications:
- Ethernet, HDMI
- Capacitance @ Frequency:
- 0.9pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-89 (SOT-666)
RCLAMP0502A.TCT FAQ
1.How can I place an order for RCLAMP0502A.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0502A.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 RCLAMP0502A.TCT reliable?
The price and inventory of RCLAMP0502A.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0502A.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0502A.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0502A.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0502A.TCT?
RCLAMP0502A.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0502A.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 RCLAMP0502A.TCT?
For technical support, including RCLAMP0502A.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0502A.TCT requirements.
6.How does Aetrix verify that RCLAMP0502A.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0502A.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 RCLAMP0502A.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0502A.TCT?
All RCLAMP0502A.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0502A.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 RCLAMP0502A.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0502A.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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