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Semtech Corporation RCLAMP0542T.TCT
- Part No.:
- RCLAMP0542T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-UFDFN
- Datasheet:
-
RCLAMP0542T.TCT.pdf
- Description:
- TVS DIODE 5VWM 15VC SLP1610P4T
- Quantity:
- Payment:
- Shipping:
Inventory:26,045
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Product details
Overview
RCLAMP0542T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 22V-rated power or I/O 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 input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP0542T.TCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping behavior under surge conditions, and direct alternatives for 22V bus protection in USB PD, IoT, and industrial equipment designs.
Technical Context
RCLAMP0542T.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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to ultra-low dynamic resistance (20 mΩ) and decreasing RDS(on) with increasing current.
The device operates over –40°C to +125°C, maintains ≤600 nA reverse leakage at 22V, and exhibits only 175 pF junction capacitance at 22V/1 MHz - enabling robust protection without signal integrity degradation on high-speed or noise-sensitive 22V power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays below 30V damage threshold of common load switches and PD controllers. |
| ESD Rating | ±30 kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for end-equipment certification. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Line Surge (±1 kV, RS = 42 Ω) for industrial and USB PD applications. |
| Junction Capacitance | 175 pF at 22 V / 1 MHz - low enough to avoid loading 22V power rails while maintaining fast response. |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve and minimizes voltage overshoot during multi-pulse transients. |
| Operating Temp | –40°C to +125°C - supports extended temperature operation in automotive-adjacent and industrial environments. |
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 return for all surge current paths; must be connected with low-inductance vias to maximize 40A capability. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS); all three pins required for full 40A rating and thermal sharing. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28 V) across 1–40A surge range, unlike voltage-rising TVS diodes. |
| Low dynamic resistance | 20 mΩ ensures minimal IR drop during high-current surges, preserving downstream voltage margin. |
| High-temperature stability | Clamping voltage drift <0.5 V from –40°C to +125°C - eliminates thermal derating in enclosed industrial enclosures. |
| Low leakage & capacitance | ≤600 nA @ 22 V and 175 pF @ 1 MHz - avoids standby power loss and signal distortion on 22V supply rails. |
| Compact DFN footprint | 1.6 mm × 1.6 mm saves >60% board area vs. SO-8 or SOT-23 TVS solutions rated for same 40A surge. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
|
Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, clamping surges before they reach PD controller or load switch IC. Use Value: Maintains 27.5–28 V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in USB PD controllers rated for ≤30V absolute max. |
Use Scenario: Shielding enable and input pins of industrial-grade load switches (e.g., HS2950P) from EOS events in remote meters and robotics. IC Role / Device Role / Timing Role: Primary front-end protector absorbing 8/20μs surges before internal FETs of load switch, reducing stress on gate oxide and drain-source junction. Use Value: Limits clamping voltage to ≤28 V across full temperature range - keeps within safe operating area (SOA) of 30V-rated load switch FETs. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways exposed to field ESD and induced surges via long cables. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main 22V input rail, coordinated with low-capacitance TVS on data lines. Use Value: Delivers 40A surge handling with <600 nA leakage - preserves battery life in always-on edge nodes while meeting IEC 61000-4-5 compliance. |
Use Scenario: Protecting 22V backup supply lines in NVMe SSDs and enterprise storage controllers against hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: High-reliability clamp on non-switching 22V rail feeding PMICs and flash memory power domains. Use Value: Stable 27.5–28 V clamping ensures no voltage excursion breaches 30V tolerance of storage PMIC inputs during repeated surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 22V transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs, DFN-6 package; differs only in reel packaging (3,000 pcs/reel vs. 10,000 pcs for RCLAMP0542T.TCT). | No functional difference; used interchangeably in USB PD and industrial designs per Semtech documentation. | Select TDS2211P.C if sourcing from distributors with standard 3k-reel inventory; otherwise RCLAMP0542T.TCT offers higher volume efficiency. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A - clamps ~8V higher than RCLAMP0542T.TCT at rated current and rises with temperature. | Suitable for cost-sensitive, lower-surge applications (<15A) where clamping voltage margin allows. | Choose SMAJ22A only when 35.5V clamping is acceptable and thermal derating is managed; not recommended for USB PD or high-temp industrial use. |
Compared with TDS2211P.C (identical function, different reel size) and SMAJ22A (higher, temperature-sensitive clamping), RCLAMP0542T.TCT delivers superior 27.5–28 V clamping stability across 40A and –40°C to +125°C - critical for protecting modern 30V-tolerance PD controllers and load switches without design margin compromise.
Availability
RCLAMP0542T.TCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node 22V power rails requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for RCLAMP0542T.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.
RCLAMP0542T.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS protection applications demanding flat clamping, wide temperature stability, and compact footprint.
FAQ
What is the maximum clamping voltage of RCLAMP0542T.TCT at 40A surge current?
The RCLAMP0542T.TCT clamps at 27.5–28 V under 40A peak pulse current (8/20μs waveform, 2Ω source impedance), as specified in the Electrical Characteristics table. This value remains stable across –40°C to +125°C, distinguishing it from conventional TVS diodes whose clamping voltage rises with current and temperature. The RCLAMP0542T.TCT achieves this via its FET-based shunt architecture and ultra-low dynamic resistance.
Is RCLAMP0542T.TCT pin-compatible with TDS2211P.C?
Yes, RCLAMP0542T.TCT and TDS2211P.C share identical DFN-6 package dimensions (1.6 mm × 1.6 mm), pin configuration (pins 1–3 = GND, pins 4–6 = IN), and electrical specifications - confirmed by Semtech's datasheet and marking code alignment. The only difference is reel quantity (10,000 pcs vs. 3,000 pcs), making them functionally interchangeable in PCB layouts. RCLAMP0542T.TCT requires no layout change when substituting for TDS2211P.C.
Can RCLAMP0542T.TCT protect USB Type-C VBUS lines operating at 20V PD profiles?
Yes, RCLAMP0542T.TCT is explicitly validated for USB Type-C PD input protection in Semtech's application diagrams, with 22V working voltage and 27.5–28V clamping ensuring safe operation below the 30V damage threshold of common PD controllers. Its ±30kV ESD rating and 40A surge capability meet IEC 61000-4-2/4-5 requirements for end-equipment certification. RCLAMP0542T.TCT is deployed in reference designs alongside RClamp3371ZC for superspeed lanes.
What is the junction capacitance of RCLAMP0542T.TCT and why does it matter?
RCLAMP0542T.TCT has a junction capacitance of 175 pF at 22 V and 1 MHz. This value is low enough to avoid excessive loading on 22V power rails yet high enough to ensure effective high-frequency transient energy diversion. Unlike data-line TVS devices requiring sub-0.5pF capacitance, RCLAMP0542T.TCT's 175 pF is optimized for power-rail protection - minimizing voltage droop during fast transients without compromising system stability. The RCLAMP0542T.TCT datasheet confirms this value is stable across temperature and bias.
Does RCLAMP0542T.TCT require a thermal pad or heatsink on the PCB?
No, RCLAMP0542T.TCT does not require a thermal pad or external heatsink. Its DFN-6 package dissipates surge energy through the copper planes connected to pins 1–3 (GND) and 4–6 (IN), with recommended layout using multiple low-inductance vias to internal ground layers. Semtech's datasheet explicitly states "no thermal pad is needed" because energy is dissipated in the silicon FET during transient events, not sustained DC power. Proper PCB layout - especially short traces and robust grounding - is more critical than thermal mass for RCLAMP0542T.TCT performance.
RCLAMP0542T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-UFDFN
- 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):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 75W
- Power Line Protection:
- Yes
- Applications:
- Ethernet, HDMI
- Capacitance @ Frequency:
- 0.45pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1610P4T
RCLAMP0542T.TCT FAQ
1.How can I place an order for RCLAMP0542T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0542T.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 RCLAMP0542T.TCT reliable?
The price and inventory of RCLAMP0542T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0542T.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP0542T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0542T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0542T.TCT?
RCLAMP0542T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0542T.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 RCLAMP0542T.TCT?
For technical support, including RCLAMP0542T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0542T.TCT requirements.
6.How does Aetrix verify that RCLAMP0542T.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP0542T.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 RCLAMP0542T.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP0542T.TCT?
All RCLAMP0542T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0542T.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 RCLAMP0542T.TCT part is unused and in its original packaging.
Return procedure for RCLAMP0542T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0542T.TCT Tags
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