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Semtech Corporation SMS05C.TCT
- Part No.:
- SMS05C.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
SMS05C.TCT.pdf
- Description:
- TVS DIODE 5VWM 14.5VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
SMS05C.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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the SMS05C.TCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 22V bus protection in high-reliability embedded systems.
Technical Context
The SMS05C.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 standard TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates over –40°C to +125°C with <20mΩ dynamic resistance, 175pF junction capacitance at 22V, and reverse leakage below 600nA. Its functional architecture enables stable 27.5–28V clamping at both 24A and 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), independent of temperature drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage of protected line without device conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - 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 robustness standards without derating. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; reduces voltage rise per amp of surge current versus TVS diodes. |
| Operating Temp | –40°C to +125°C - supports deployment in extended-temperature industrial and automotive under-hood environments. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB-C); all three pins are internally paralleled and must be tied together externally for full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces PN-junction TVS with active FET switch, enabling near-constant clamping voltage across 1–40A surge range. |
| Temperature-stable clamping | Clamping voltage varies ≤0.5V from –40°C to +125°C at 40A - eliminates thermal derating required for conventional TVS. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) supports repeated lightning-induced surges in industrial equipment and metering. |
| Low dynamic resistance | 20mΩ RDYN minimizes IR drop during surge, ensuring predictable voltage clamp regardless of PCB trace impedance. |
| Compact DFN footprint | 1.6mm × 1.6mm area saves >60% board space vs. comparable SO-8 or SOT-23 TVS solutions while maintaining 6-pin thermal/current paths. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and PD controller or load switch input. Use Value: Maintains 27.5–28V clamp at 40A and 125°C - prevents overvoltage damage to sensitive PD controllers where conventional TVS would exceed 35V. |
Use Scenario: Safeguarding enable/power inputs of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient limiter preventing gate oxide rupture or drain-source avalanche in internal FETs during surge events. Use Value: Limits clamping to 28V at full 40A rating, staying well below typical 30–36V absolute maximum ratings of integrated load switch FETs. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone transient suppressor on main power input before DC-DC conversion and system regulation. Use Value: Delivers ±30kV ESD immunity and 40A surge capability in ultra-small DFN package - critical for space-constrained edge enclosures. |
Use Scenario: Protecting 22V supply rails in NVMe SSD modules and enterprise storage backplanes against hot-swap and cable discharge events. IC Role / Device Role / Timing Role: High-reliability clamping device placed at board edge to absorb energy before it reaches PMICs and flash controllers. Use Value: Stable 27.5–28V clamping ensures no voltage overshoot breaches 29V tolerance limits of modern 22V-rated storage power management ICs. |
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, DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. SMS05C.TCT's unspecified quantity). | No functional difference; used interchangeably in production where reel size or logistics drive part number selection. | Select TDS2211P.C if standard 7″ reel volume procurement is required; SMS05C.TCT may be offered in alternate packaging or distribution channels. |
| uClamp2411ZA.TCT | 24V working voltage, lower 24A IPP rating, higher 30V clamping, smaller 1.0mm × 0.6mm DFN-2 package - optimized for CC/SBU lines, not power rails. | Intended for low-capacitance, low-current signal-line protection (e.g., USB-C CC pins), not 22V power bus protection. | Not a direct alternative: uClamp2411ZA.TCT lacks required 40A surge rating and thermal robustness for power-line use; only suitable for auxiliary signal lines. |
Compared with SMS05C.TCT, TDS2211P.C offers identical protection performance and is functionally interchangeable, while uClamp2411ZA.TCT serves a different application tier - signal-level vs. power-rail protection - and cannot replace SMS05C.TCT in 22V bus applications without compromising surge margin.
Availability
SMS05C.TCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle support, and guaranteed surge performance across temperature extremes.
Supply support for SMS05C.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 analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The TDS family - including SMS05C.TCT - was engineered specifically to replace conventional TVS diodes in high-voltage, high-surge industrial and USB-C applications where stable clamping and temperature independence are critical.
FAQ
What is the exact working voltage rating of SMS05C.TCT?
The SMS05C.TCT has a reverse stand-off voltage (VRWM) of 22V, meaning it remains non-conductive up to this DC or continuous AC voltage level on the protected line. This rating aligns with USB PD 3.0 VBUS specifications and ensures reliable operation without leakage or premature triggering in 22V systems.
Does SMS05C.TCT meet IEC 61000-4-5 surge immunity standards?
Yes, SMS05C.TCT is rated for 40A peak pulse current using the IEC 61000-4-5 8/20μs waveform and supports ±1kV combination-wave testing (1.2/50μs voltage + 8/20μs current, RS = 42Ω), satisfying Level 4 industrial surge immunity requirements for 22V-rated equipment.
How does SMS05C.TCT differ from standard TVS diodes in clamping behavior?
Unlike TVS diodes whose clamping voltage rises linearly with surge current (VC = VBR + IPP × RDYN), SMS05C.TCT uses an active FET shunt that maintains 27.5–28V clamping from 1A to 40A and across –40°C to +125°C - eliminating thermal and current-dependent derating.
What is the recommended PCB layout for SMS05C.TCT?
Place SMS05C.TCT within 2mm of the protected connector. Connect all IN pins (4,5,6) via a single short trace to the protected line, and tie all GND pins (1,2,3) directly to a solid ground plane using ≥3 vias. Avoid thermal pads - energy is dissipated in the silicon, not the package.
Is SMS05C.TCT compatible with automated SMT assembly processes?
Yes, SMS05C.TCT uses a standard DFN-6 footprint (1.6mm × 1.6mm) with gull-wing–compatible terminations and Pb-free, RoHS-compliant finish. It supports reflow profiles up to 260°C peak and is qualified for IPC-J-STD-020 moisture sensitivity level 1 (unlimited floor life).
SMS05C.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-23-6
- Series:
- SMS
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 24A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 325pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SMS05C.TCT FAQ
1.How can I place an order for SMS05C.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMS05C.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 SMS05C.TCT reliable?
The price and inventory of SMS05C.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMS05C.TCT is usually 5 days.
3.What payment methods are accepted for SMS05C.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMS05C.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMS05C.TCT?
SMS05C.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMS05C.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 SMS05C.TCT?
For technical support, including SMS05C.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMS05C.TCT requirements.
6.How does Aetrix verify that SMS05C.TCT is sourced from the original manufacturer or authorized distributors?
All SMS05C.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 SMS05C.TCT meets industry standards.
7.What is the process for return or replacement of SMS05C.TCT?
All SMS05C.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SMS05C.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 SMS05C.TCT part is unused and in its original packaging.
Return procedure for SMS05C.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMS05C.TCT Tags
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