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Semtech Corporation RCLAMP0508M.TBT
- Part No.:
- RCLAMP0508M.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
RCLAMP0508M.TBT.pdf
- Description:
- TVS DIODE 5VWM 25VC 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,681
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Product details
Overview
RCLAMP0508M.TBT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS 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, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB Type-C PD bus protection and load switch input safeguarding.
For engineers reviewing the RCLAMP0508M.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage 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 RCLAMP0508M.TBT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. 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 breakdown voltage (25–27.9V), reverse leakage <600nA at 22V, and junction capacitance of 175pF at 22V/1MHz - enabling robust protection for high-speed interfaces without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus voltage and protects downstream 22V-tolerant controllers without leakage or false triggering. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below typical 30V damage threshold of USB PD ICs across full surge range and temperature. |
| ESD Rating | ±30kV contact & air per IEC 61000-4-2 - exceeds industrial and consumer ESD immunity requirements for exposed connectors. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and IoT edge nodes. |
| Dynamic Resistance | 20mΩ - enables near-constant clamping by minimizing IR drop increase as surge current rises. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for DC power rail protection without affecting load switch response or PD negotiation timing. |
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 |
|---|---|---|
| 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 shunting | Replaces traditional TVS diodes with active clamping - delivers flat VC vs. IPP curve instead of linear rise. |
| Temperature-stable clamping | Clamping voltage varies <0.5V from –40°C to +125°C - eliminates derating concerns in automotive or industrial thermal environments. |
| Low dynamic resistance | 20mΩ measured between 1A–40A - ensures minimal voltage overshoot during fast-rising surges (e.g., ESD). |
| High-energy surge handling | 1120W peak pulse power (8/20μs) - supports repeated lightning-induced transients in remote metering and industrial gateways. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBUS line in USB Type-C receptacles supporting up to 20V/5A PD profiles against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, clamping overvoltage before it reaches the PD controller or load switch. Use Value: Maintains 27.5–28V clamping across –40°C to +125°C and 24–40A, preventing damage to 30V-max PD ICs where conventional TVS would exceed safe limits at elevated temperature. | Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in programmable logic controllers, smart sensors, and battery-powered IoT hubs. IC Role / Device Role / Timing Role: Primary front-end surge protector on VIN rail, limiting voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of load switches rated ≤30V by holding clamping voltage well below their absolute maximum ratings under 40A IEC 61000-4-5 surges. |
| Remote Metering Power Input Protection | Tablet/Notebook VBUS Line Protection |
Use Scenario: Securing the DC input of utility smart meters exposed to outdoor surge environments (e.g., induced lightning on long cable runs). IC Role / Device Role / Timing Role: First-line defense on 24V auxiliary power input, absorbing multi-kA surges before they propagate into PMIC or MCU power domains. Use Value: Delivers 40A/8/20μs surge capability with 1120W peak power handling - exceeding EN 61000-4-5 Level 4 requirements while occupying only 2.56 mm² PCB area. | Use Scenario: Protecting the VBUS path in thin-client tablets and 2-in-1 notebooks where space-constrained layouts demand ultra-small footprint solutions. IC Role / Device Role / Timing Role: Compact DFN-6 suppressor mounted adjacent to USB-C port, minimizing trace inductance to preserve ESD response time (<1ns turn-on). Use Value: 1.6mm × 1.6mm package saves >60% board area versus SO-8 TVS alternatives, with no compromise in clamping performance or thermal derating. |
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, same DFN-6 package - differs only in reel quantity (3,000 pcs vs. standard) and marking code format. | No functional difference; used interchangeably in USB PD and industrial designs requiring Semtech TDS architecture. | Select when sourcing from authorized Semtech channels with specific tape-and-reel logistics requirements. |
| uClamp2411ZA | 24V working voltage, ±30kV ESD, but lower 20A IPP rating and higher 32V clamping at 20A - uses different FET-trigger architecture optimized for CC/SBU lines. | Targeted for USB-C configuration channel (CC) and sideband use (SBU) protection, not main VBUS - unsuitable for 40A surge duty. | Choose only for low-current, low-capacitance signal-line protection; not a replacement for RCLAMP0508M.TBT on power rails. |
Compared with TDS2211P.C (identical function, logistics variant) and uClamp2411ZA (lower IPP, signal-line optimized), RCLAMP0508M.TBT provides the optimal balance of 40A surge capacity, 27.5V clamping, and DFN-6 footprint for 22V power rail protection - making it the preferred choice for USB PD VBUS and industrial load switch inputs where energy handling is critical.
Availability
RCLAMP0508M.TBT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and remote metering power interfaces requiring stable component supply, consistent surge performance, and long-term lifecycle support.
Supply support for RCLAMP0508M.TBT 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 signal integrity.
RCLAMP0508M.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes with active FET-based clamping for flat, temperature-stable surge suppression in high-reliability power and interface applications.
FAQ
What is the clamping voltage of RCLAMP0508M.TBT at 40A surge current?
RCLAMP0508M.TBT clamps at 27.5–28V under 40A (8/20μs) surge conditions with 2Ω source impedance. This value remains stable across –40°C to +125°C and is guaranteed by design - unlike conventional TVS diodes whose clamping rises linearly with current and temperature. The flat response ensures predictable protection for 30V-tolerant USB PD controllers.
Does RCLAMP0508M.TBT require external bias or control signals to operate?
No, RCLAMP0508M.TBT is fully autonomous and requires no external power, bias, or enable signals. Its internal precision trigger circuit activates the shunt FET automatically when input voltage exceeds the breakdown threshold (~25–27.9V). This self-contained operation makes RCLAMP0508M.TBT ideal for always-on protection in battery-backed or unmanaged power rails.
Can RCLAMP0508M.TBT be used on high-speed data lines like USB SuperSpeed differential pairs?
No, RCLAMP0508M.TBT is not suitable for USB SuperSpeed (TX/RX) or DisplayPort lanes due to its 175pF junction capacitance, which would severely degrade signal integrity. It is specifically designed for DC power lines (e.g., VBUS) or low-speed control lines. For high-speed data lines, Semtech recommends RClamp3371ZC (<0.25pF) - a separate device optimized for signal integrity preservation.
What is the recommended PCB layout for RCLAMP0508M.TBT to achieve full 40A surge rating?
To achieve the full 40A rating, all three GND pins (1, 2, 3) and all three IN pins (4, 5, 6) must be connected in parallel using short, wide traces. Place RCLAMP0508M.TBT within 2mm of the protected connector, use ≥4 vias per GND pad to the ground plane, and avoid stubs or tees. This minimizes parasitic inductance and ensures equal current sharing - critical for maintaining specified clamping performance.
Is RCLAMP0508M.TBT compliant with RoHS and halogen-free standards?
Yes, RCLAMP0508M.TBT is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free. These qualifications are confirmed in Semtech's official datasheet Rev 2.5 and supported by material declarations available through authorized distributors.
RCLAMP0508M.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- Yes
- Applications:
- Ethernet, HDMI
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
RCLAMP0508M.TBT FAQ
1.How can I place an order for RCLAMP0508M.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0508M.TBT 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 RCLAMP0508M.TBT reliable?
The price and inventory of RCLAMP0508M.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0508M.TBT is usually 5 days.
3.What payment methods are accepted for RCLAMP0508M.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0508M.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0508M.TBT?
RCLAMP0508M.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0508M.TBT 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 RCLAMP0508M.TBT?
For technical support, including RCLAMP0508M.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0508M.TBT requirements.
6.How does Aetrix verify that RCLAMP0508M.TBT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0508M.TBT 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 RCLAMP0508M.TBT meets industry standards.
7.What is the process for return or replacement of RCLAMP0508M.TBT?
All RCLAMP0508M.TBT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0508M.TBT, 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 RCLAMP0508M.TBT part is unused and in its original packaging.
Return procedure for RCLAMP0508M.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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