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Semtech Corporation RCLAMP0531T.TCT
- Part No.:
- RCLAMP0531T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP0531T.TCT.pdf
- Description:
- TVS DIODE 5VWM 20VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:7,936
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Product details
Overview
RCLAMP0531T.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), and stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD, load switch input protection, and industrial IoT interfaces.
For engineers reviewing the RCLAMP0531T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF @ 22V), thermal robustness (−40°C to +125°C), and DFN 1.6×1.6mm package compatibility with high-density PCB layouts.
Technical Context
RCLAMP0531T.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 (27.5–28V) from 24A to 40A IPP due to decreasing RDS(on), not fixed RDYN.
The device protects one unidirectional line with reverse stand-off voltage of 22V, breakdown at 25–27.9V (1mA), and ultra-low leakage (≤600 nA at VRWM). Its functional architecture separates trigger and conduction paths, enabling stable performance across −40°C to +125°C without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - maximum continuous DC operating voltage on protected line without leakage or degradation |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - limits transient overvoltage to safe level for downstream 24V-tolerant ICs like USB PD controllers |
| Peak Pulse Current | 40 A (8/20μs) - withstands high-energy surges per IEC 61000-4-5, including ±1kV combo-wave (1.2/50μs + 8/20μs) |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity for handheld and connector-facing applications |
| Junction Capacitance | 175 pF @ 22V, 1 MHz - low enough for 22V bus protection without signal integrity impact on moderate-speed lines |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve; ensures minimal voltage rise under increasing surge current |
| Operating Temp. | −40°C to +125°C - supports industrial and automotive-adjacent environments without clamping drift |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground terminals - all three must be connected to minimize parasitic inductance and maximize surge current handling |
| 4, 5, 6 | IN | Protected line input - parallel connection of all three pins ensures uniform current sharing and optimal clamping performance |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces traditional TVS diodes with active switching - delivers flat clamping independent of IPP and temperature |
| Stable clamping across temperature | 27.5–28 V maintained from −40°C to +125°C - eliminates need for derating or thermal margin planning |
| High-energy surge capability | 1120 W peak pulse power (8/20μs) - supports industrial lightning surge standards without external series impedance |
| Low dynamic resistance | 20 mΩ - minimizes IR drop during surge, ensuring predictable voltage limiting at full 40A |
| Ultra-low leakage | ≤600 nA @ 22V - prevents power loss or bias shift in always-on 22V supply rails or sensing circuits |
Applications
| USB Type-C Power Delivery Protection | Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V PD negotiation, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, clamping transients before reaching PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at full 40A surge - stays below 30V damage threshold of common PD controllers (e.g., TUSB73x, CYPD3177). |
Use Scenario: Shielding enable or input pins of industrial-grade load switches (e.g., HS2950P, TPS229xx) from EOS events in remote meters or robotics. IC Role / Device Role / Timing Role: Primary front-end protector for high-side switch inputs, preventing gate oxide damage from fast-rising transients. Use Value: Clamps within 28V at 125°C - avoids exceeding 30V absolute max rating of typical load switch control FETs, extending reliability in hot environments. |
| Industrial IoT Sensor Bus Protection | 22V Industrial Power Rail Protection |
|
Use Scenario: Securing RS-485, CAN FD, or analog sensor supply lines in edge devices deployed in factory automation or smart grid nodes. IC Role / Device Role / Timing Role: Single-device solution for 22V-rated data/power lines subject to cable discharge, lightning-induced coupling, and EFT bursts. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and stable clamping ensure uninterrupted communication during repetitive burst noise in noisy plant floors. |
Use Scenario: Safeguarding 22V auxiliary rails feeding PLC I/O modules, motor drivers, or fieldbus gateways against power-line surges and hot-swap transients. IC Role / Device Role / Timing Role: Standalone overvoltage clamp on DC input stage, replacing multi-component TVS+MOV solutions. Use Value: 1120W peak power rating allows direct placement without series impedance - reduces BOM count and board area vs. legacy TVS+inductor designs. |
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 die, identical electrical specs, identical DFN 1.6×1.6mm package - differs only in reel packaging (3,000 pcs/reel vs. 10,000 pcs for RCLAMP0531T.TCT) | Functionally interchangeable; used in same USB-C and industrial reference designs by Semtech | Select TDS2211P.C for standard distribution volumes; RCLAMP0531T.TCT preferred for high-volume OEM procurement with tape-and-reel optimization |
| uClamp2411ZA.TCT | 24V working voltage, lower 24A IPP rating, higher 30V clamping (typ.), smaller 1.0×0.6mm package - optimized for CC/SBU lines, not main VBUS | Targeted for 5V–24V low-capacitance applications (e.g., USB-C configuration channel), not 22V high-current bus protection | Use uClamp2411ZA.TCT only for auxiliary lines; RCLAMP0531T.TCT remains required for primary 22V bus protection where 40A surge and flat clamping are critical |
Compared with TDS2211P.C, RCLAMP0531T.TCT offers identical protection performance but optimized logistics for large-scale production; versus uClamp2411ZA.TCT, it delivers 67% higher surge current capacity and 2.5V lower clamping - essential for safeguarding 22V power rails where voltage margin is constrained.
Availability
RCLAMP0531T.TCT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and 22V IoT sensor bus protection requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for RCLAMP0531T.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.
RCLAMP0531T.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-voltage, high-surge applications demanding stable clamping and thermal resilience.
FAQ
What is the primary protection function of RCLAMP0531T.TCT?
RCLAMP0531T.TCT functions as a transient diverting suppressor that actively shunts high-energy EOS/ESD events to ground using an integrated surge-rated FET. Unlike passive TVS diodes, it maintains a stable 27.5–28V clamping voltage across its full 40A surge rating and −40°C to +125°C operating range - making RCLAMP0531T.TCT ideal for protecting 22V power and data lines in USB-C PD and industrial equipment.
Does RCLAMP0531T.TCT require external components for basic operation?
No, RCLAMP0531T.TCT operates as a standalone protection device with no external bias, resistors, or capacitors needed. Its internal trigger circuit autonomously activates the shunt FET during overvoltage events. Layout best practice requires connecting all three GND pins (1–3) and all three IN pins (4–6) directly to low-inductance planes - but RCLAMP0531T.TCT itself needs zero external components to meet its rated 40A surge and ±30kV ESD specifications.
How does RCLAMP0531T.TCT differ from standard TVS diodes in clamping behavior?
RCLAMP0531T.TCT exhibits near-constant clamping voltage (27.5–28V) from 24A to 40A surge current due to its FET-based architecture and sub-20 mΩ dynamic resistance. In contrast, standard TVS diodes follow VC = VBR + IPP × RDYN, causing clamping voltage to rise linearly with current - e.g., a typical 22V TVS may clamp at 38V at 24A and 125°C. This fundamental difference makes RCLAMP0531T.TCT more reliable for protecting voltage-sensitive 24V-tolerant ICs under real-world surge conditions.
Can RCLAMP0531T.TCT be used on bidirectional signal lines?
No, RCLAMP0531T.TCT is designed for unidirectional protection only - it connects between a single protected line (pins 4–6) and ground (pins 1–3). It does not support AC-coupled or true bidirectional data lines like USB 2.0 D+/D− or RS-485 differential pairs. For such applications, discrete back-to-back TVS arrays or purpose-built bidirectional suppressors (e.g., RClamp3371ZC) must be used alongside RCLAMP0531T.TCT, which remains appropriate only for the 22V VBUS or power rail segment.
What is the recommended PCB layout for optimal performance of RCLAMP0531T.TCT?
Place RCLAMP0531T.TCT as close as possible to the protected connector (e.g., USB-C receptacle). Connect all three IN pins (4–6) via a single short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid stubs or splits in the GND return path. This layout minimizes parasitic inductance, ensuring RCLAMP0531T.TCT responds within nanoseconds and handles full 40A surge without voltage overshoot.
RCLAMP0531T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 80W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
RCLAMP0531T.TCT FAQ
1.How can I place an order for RCLAMP0531T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0531T.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 RCLAMP0531T.TCT reliable?
The price and inventory of RCLAMP0531T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0531T.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0531T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0531T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0531T.TCT?
RCLAMP0531T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0531T.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 RCLAMP0531T.TCT?
For technical support, including RCLAMP0531T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0531T.TCT requirements.
6.How does Aetrix verify that RCLAMP0531T.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0531T.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 RCLAMP0531T.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0531T.TCT?
All RCLAMP0531T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0531T.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 RCLAMP0531T.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0531T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0531T.TCT Tags
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