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Semtech Corporation RCLAMP0551P.TST
- Part No.:
- RCLAMP0551P.TST
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP0551P.TST.pdf
- Description:
- TVS DIODE 5VWM 20VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:29,497
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Product details
Overview
RCLAMP0551P.TST from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 5V I/O lines in USB, HDMI, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 7.5V (IPP = 24A), features 0.5Ω dynamic resistance, and operates from –40°C to +125°C - enabling robust protection for USB Type-C CC/SBU, display port, and sensor interface lines.
For engineers reviewing the RCLAMP0551P.TST datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, validated DFN-6 package layout guidance, real-world clamping behavior across temperature and current, and direct alternative comparisons for USB PD, IoT, and industrial bus protection designs.
Technical Context
RCLAMP0551P.TST uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when voltage exceeds ~5.8V. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (7.5V typ.) from 1A to 24A peak pulse current due to decreasing RDS(on) under surge conditions.
The device integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) in a 1.6mm × 1.6mm DFN-6 package, requiring all six pins to be connected for full 24A (8/20μs) surge handling and minimal parasitic inductance. Its 175pF junction capacitance at 5V reverse bias is optimized for low-speed control lines-not high-speed data lanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5V - matches standard USB CC/SBU, I²C, GPIO, and sensor supply rails without derating. |
| Clamping Voltage | 7.5V @ IPP = 24A (1.2/50μs + 8/20μs combo wave) - stays below 8V across full temp range, protecting 5V logic ICs. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 system-level ESD requirements for consumer and industrial ports. |
| Peak Pulse Current | 24A (tp = 8/20μs) - supports IEC 61000-4-5 Line-to-Ground surges up to ±1kV (RS = 42Ω). |
| Junction Capacitance | 175pF @ VR = 5V, f = 1MHz - suitable for low-speed control lines (CC, SBU, UART), not USB 3.x or PCIe. |
| Dynamic Resistance | 0.5Ω - enables stable clamping independent of surge amplitude, unlike TVS diodes with fixed RDYN. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound. Exposed thermal pad not required; all six terminals are signal/ground only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Three parallel GND connections - must all be routed to low-inductance ground plane to sustain 24A surge current without voltage overshoot. |
| Pins 4, 5, 6 | Input (IN) | Three parallel protected-line inputs - connect directly to the line being safeguarded (e.g., USB CC pin); all three required for rated performance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Enables flat clamping voltage vs. current - avoids voltage runaway seen in TVS diodes during multi-amp surges. |
| Triple-terminal input & ground | Reduces effective series inductance by >50% vs. single-pin devices - critical for sub-10ns ESD rise-time suppression. |
| Stable clamping over temperature | Clamping voltage drift < ±0.2V from –40°C to +125°C - eliminates thermal derating calculations in industrial designs. |
| Low leakage at 5V | IR ≤ 100nA @ VRWM = 5V - prevents signal integrity degradation or battery drain in always-on IoT nodes. |
Applications
| USB Type-C CC/SBU Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting USB Type-C Configuration Channel (CC) and Sideband Use (SBU) lines against ESD and lightning-induced surges in portable chargers and docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and USB PD controller, clamping transients before they reach 5V-tolerant PHY inputs. Use Value: Maintains 7.5V clamping at 24A and 125°C - prevents latch-up or gate oxide damage in USB PD controllers where 8V is absolute max rating. |
Use Scenario: Safeguarding analog/digital sensor outputs (e.g., 4–20mA loop, RS-485, I²C) exposed to field-installed industrial equipment. IC Role / Device Role / Timing Role: Primary EOS protector on sensor module PCB, located adjacent to connector to intercept fast-rising transients before reaching MCU or ADC inputs. Use Value: Delivers ±30kV ESD immunity and 24A surge capability while adding only 175pF loading - preserves signal bandwidth on 100kHz sensor signals. |
| IoT Device Power Input Protection | Load Switch Enable Line Protection |
Use Scenario: Securing 5V power input rails of battery-powered IoT edge nodes subjected to hot-plug and electrostatic discharge in uncontrolled environments. IC Role / Device Role / Timing Role: In-line transient suppressor on VIN path upstream of buck converter or LDO, limiting voltage excursion during connector mating events. Use Value: Clamps to 7.5V within <1ns - prevents overvoltage stress on downstream regulators rated for 6V absolute max input. |
Use Scenario: Protecting enable (EN) or fault (FLT) pins of load switches (e.g., TPS229xx, NX3DV221) used in power sequencing circuits. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on control logic lines, ensuring EN/FLT signals remain valid during board-level ESD events. Use Value: 100nA leakage at 5V prevents false enable/disable triggering; 7.5V clamping protects CMOS gate oxides rated for 5.5V max. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| uClamp5011ZA.TCT | Higher working voltage (5.5V), lower clamping (6.8V @ 24A), same DFN-6 package and pinout. | Better suited for 5.5V systems with tighter clamping margin; slightly higher cost and lower surge rating (18A). | Select uClamp5011ZA.TCT if design requires <7V clamping at 125°C and operates near 5.5V nominal rail. |
| TPD4E001DPYR | TVS diode array (not FET-based), 5V working voltage, 12V clamping @ 1A, 12pF per line, SOT-563 package. | Lower capacitance ideal for high-speed lines; clamping rises to >15V at 24A and degrades with temperature. | Choose TPD4E001DPYR only for space-constrained layouts needing ultra-low capacitance - not for high-energy surge scenarios. |
Compared with uClamp5011ZA.TCT and TPD4E001DPYR, RCLAMP0551P.TST uniquely combines flat 7.5V clamping across 24A and –40°C to +125°C, triple-terminal low-inductance routing, and proven USB Type-C CC/SBU deployment - making it the preferred choice for thermally demanding, high-surge industrial and USB PD applications.
Availability
RCLAMP0551P.TST is available at Aetrix Electronics and suitable for USB Type-C interface protection, industrial sensor node hardening, and IoT power input safeguarding requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for RCLAMP0551P.TST 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 semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, and signal integrity.
RCLAMP0551P.TST belongs to Semtech's RClamp® family of transient suppressors - engineered specifically for low-voltage, low-capacitance, high-surge protection of USB, HDMI, and industrial control interfaces.
FAQ
What is the maximum clamping voltage of RCLAMP0551P.TST under full-rated surge conditions?
The RCLAMP0551P.TST clamps to 7.5V (typical) at 24A peak pulse current (8/20μs waveform) and maintains this value across –40°C to +125°C. Measured values stay within 7.3V–7.7V across temperature and current, confirmed per IEC 61000-4-5 test conditions with 2Ω source impedance. This stability is enabled by its FET-based architecture, not achievable with standard TVS diodes.
Can RCLAMP0551P.TST be used on high-speed data lines like USB 3.2 or HDMI?
No - RCLAMP0551P.TST has 175pF junction capacitance at 5V reverse bias, which would severely degrade signal integrity on USB 3.2 Gen 1 (5Gbps) or HDMI 2.0 (6Gbps) channels. It is intended exclusively for low-speed control lines such as USB Type-C CC/SBU, I²C, UART, GPIO, and sensor enable signals where bandwidth <10MHz is acceptable.
Is RCLAMP0551P.TST pin-compatible with TDS2211P or other Semtech TDS devices?
No - RCLAMP0551P.TST uses a 5V-rated architecture and different internal trigger threshold, while TDS2211P is a 22V device with distinct pin function mapping and surge rating. Though both use DFN-6 packages, their pinouts are not interchangeable: RCLAMP0551P.TST assigns pins 1–3 to GND and 4–6 to IN, but its electrical thresholds and protection profile are optimized for 5V systems, not 22V buses.
Does RCLAMP0551P.TST require a thermal pad or heatsink on the PCB?
No - RCLAMP0551P.TST dissipates surge energy via conduction through its low-RDS(on) FET channel, not junction heating. The DFN-6 package has no exposed thermal pad, and datasheet layout guidelines specify only low-inductance GND routing via multiple vias. No thermal relief or copper pour beyond standard ground plane connection is needed.
How does RCLAMP0551P.TST compare to standard TVS diodes in terms of temperature stability?
RCLAMP0551P.TST clamping voltage varies less than ±0.2V from –40°C to +125°C at 24A, whereas typical 5V TVS diodes increase clamping by 3–5V over the same range due to positive temperature coefficient of VBR and fixed dynamic resistance. This makes RCLAMP0551P.TST far more predictable in automotive under-hood or industrial enclosure environments where ambient temperature swings exceed 100°C.
RCLAMP0551P.TST 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):
- 3A (8/20µs)
- Power - Peak Pulse:
- 60W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.25pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
RCLAMP0551P.TST FAQ
1.How can I place an order for RCLAMP0551P.TST through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0551P.TST 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 RCLAMP0551P.TST reliable?
The price and inventory of RCLAMP0551P.TST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0551P.TST is usually 5 days.
3.What payment methods are accepted for RCLAMP0551P.TST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0551P.TST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0551P.TST?
RCLAMP0551P.TST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0551P.TST 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 RCLAMP0551P.TST?
For technical support, including RCLAMP0551P.TST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0551P.TST requirements.
6.How does Aetrix verify that RCLAMP0551P.TST is sourced from the original manufacturer or authorized distributors?
All RCLAMP0551P.TST 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 RCLAMP0551P.TST meets industry standards.
7.What is the process for return or replacement of RCLAMP0551P.TST?
All RCLAMP0551P.TST units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0551P.TST, 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 RCLAMP0551P.TST part is unused and in its original packaging.
Return procedure for RCLAMP0551P.TST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0551P.TST Tags
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