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Semtech Corporation RCLAMP0521P.TCT
- Part No.:
- RCLAMP0521P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP0521P.TCT.pdf
- Description:
- TVS DIODE 5VWM 25VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:4,182
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Product details
Overview
RCLAMP0521P.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB PD, USB Type-C VBus, and industrial load switch input protection.
For engineers reviewing the RCLAMP0521P.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC response, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The RCLAMP0521P.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events above ~25V breakdown. 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.
It operates across –40°C to +125°C with stable 22V reverse stand-off voltage and <600nA leakage at VRWM, while dissipating up to 1120W peak pulse power. Its 175pF capacitance at 22V/1MHz and 20mΩ dynamic resistance support robust protection without signal integrity degradation on high-speed power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity requirements for external connectors. |
| Dynamic Resistance | 20mΩ (8/20μs, 1–40A range) - enables flat clamping behavior and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough to avoid signal distortion on 22V power rails while maintaining robust surge handling. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound, 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 (e.g., VBus); parallel connection ensures uniform current distribution and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces conventional TVS with active shunt architecture for flat clamping voltage across full 24–40A range. |
| Temperature-stable clamping | Clamping voltage varies ≤0.5V from –40°C to +125°C - eliminates derating concerns in industrial thermal environments. |
| Low dynamic resistance | 20mΩ enables minimal IR drop during surge, reducing overshoot and improving protection margin for sensitive 22V ICs. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) supports repeated lightning-surge events without degradation in load-switch or USB PD applications. |
Applications
| USB Type-C VBus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting USB Type-C power delivery bus (up to 20V nominal, 22V max) from ESD and surge events at the connector. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at VBus entry point to clamp surges before reaching PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false overvoltage shutdown and ensures reliable PD negotiation under stress. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) against lightning-induced surges in remote meters or robotics. IC Role / Device Role / Timing Role: Primary front-end protector absorbing >40A transients to prevent gate oxide damage or internal FET failure in the load switch. Use Value: 20mΩ dynamic resistance limits voltage rise across switch input, keeping stress below 30V even at full 40A surge - extends system reliability in harsh environments. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
Use Scenario: Securing 22V auxiliary power rail in battery-backed IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone EOS protector on main power input, coordinated with low-capacitance TVS on data lines. Use Value: ±30kV ESD rating and stable 27.5V clamping ensure uninterrupted operation during frequent human-contact events in uncontrolled deployment environments. |
Use Scenario: Protecting 22V supply rail in NVMe SSD enclosures or enterprise storage backplanes from hot-plug transients and board-level coupling. IC Role / Device Role / Timing Role: High-energy suppressor placed at power entry to absorb multi-pulse surges without thermal runaway or parameter drift. Use Value: 1120W peak power rating and -40°C to +125°C operation guarantee protection integrity across extended thermal cycles and repeated surge exposure. |
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 functional specification, identical electrical parameters, and identical DFN-6 package - direct manufacturer-recommended variant with different reel marking. | Identical use case: USB PD, load switch, and 22V industrial rail protection. | Select TDS2211P.C when sourcing from Semtech's standard distribution channel; RCLAMP0521P.TCT is functionally identical but may differ in traceability or date-code format. |
| SMAJ22A | Standard unidirectional TVS diode; 22V standoff, 35.5V min clamping at 12.5A (8/20μs), higher dynamic resistance (~0.5Ω), no flat-clamp behavior. | Suitable only for lower-energy surges (<12.5A); clamping rises significantly with current and temperature - inadequate for 40A/22V industrial requirements. | Choose SMAJ22A only for cost-sensitive, low-surge applications where flat clamping and temperature stability are not required. |
Compared with TDS2211P.C, RCLAMP0521P.TCT offers identical performance and form factor; versus SMAJ22A, it delivers 3× higher surge current capability, 25× lower dynamic resistance, and thermally stable clamping - making it essential for modern 22V high-reliability power interfaces.
Availability
RCLAMP0521P.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery, industrial load switch inputs, and 22V IoT power rail applications requiring stable component supply, long-term lifecycle support, and consistent surge performance across temperature extremes.
Supply support for RCLAMP0521P.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, and signal integrity.
RCLAMP0521P.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy, temperature-critical 22V power rail protection applications.
FAQ
What is the clamping voltage of RCLAMP0521P.TCT at 40A surge current?
The RCLAMP0521P.TCT clamps at 27.6–28V under 40A peak pulse current (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω). This value is guaranteed across –40°C to +125°C and reflects its FET-based architecture, which maintains near-constant clamping independent of current magnitude - unlike conventional TVS diodes whose clamping rises linearly with IPP.
Is RCLAMP0521P.TCT pin-compatible with TDS2211P.C?
Yes, RCLAMP0521P.TCT is functionally and physically identical to TDS2211P.C: both use the same DFN-6 (1.6mm × 1.6mm) package, share identical pin configuration (Pins 1–3 = GND, Pins 4–6 = IN), and meet identical electrical specifications per Semtech's Rev 2.5 datasheet. The difference lies only in part numbering convention and reel marking - not in design or performance.
Can RCLAMP0521P.TCT be used for USB PD 3.0 VBus protection?
Yes, RCLAMP0521P.TCT is explicitly validated for USB PD 3.0 VBus protection per Semtech's application documentation. Its 22V working voltage aligns with USB PD's maximum 20V nominal + margin, and its 27.5–28V clamping ensures PD controllers remain within safe operating limits during ±30kV ESD and 40A surge events - making it a preferred solution over traditional TVS diodes in this application.
What is the junction capacitance of RCLAMP0521P.TCT and why does it matter?
The RCLAMP0521P.TCT has a junction capacitance of 175pF measured at 22V reverse bias and 1MHz. This value is optimized for 22V power rails: low enough to avoid excessive filtering or voltage droop during fast transients, yet high enough to sustain robust surge energy absorption. It avoids the signal-integrity issues seen with sub-1pF TVS devices while delivering superior clamping stability.
Does RCLAMP0521P.TCT require a thermal pad on the PCB?
No, RCLAMP0521P.TCT does not require a thermal pad. Per Semtech's datasheet, surge energy is dissipated through the FET channel and trigger circuit - not via junction heating - so no thermal relief pad is needed. Instead, designers must connect all three GND pins (1, 2, 3) and all three IN pins (4, 5, 6) with low-inductance traces and multiple vias to ground plane to maximize surge current handling and minimize parasitic inductance.
RCLAMP0521P.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
RCLAMP0521P.TCT FAQ
1.How can I place an order for RCLAMP0521P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0521P.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 RCLAMP0521P.TCT reliable?
The price and inventory of RCLAMP0521P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0521P.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0521P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0521P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0521P.TCT?
RCLAMP0521P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0521P.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 RCLAMP0521P.TCT?
For technical support, including RCLAMP0521P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0521P.TCT requirements.
6.How does Aetrix verify that RCLAMP0521P.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0521P.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 RCLAMP0521P.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0521P.TCT?
All RCLAMP0521P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0521P.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 RCLAMP0521P.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0521P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0521P.TCT Tags
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Diodes Incorporated
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