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Semtech Corporation SDC36.TCT
- Part No.:
- SDC36.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SDC36.TCT.pdf
- Description:
- TVS DIODE 33VWM 45VC SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:16,722
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Product details
Overview
SDC36.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the SDC36.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 and USB PD systems.
Technical Context
The SDC36.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 standard TVS diodes, its clamping voltage remains nearly constant due to ultra-low dynamic resistance (20 mΩ) and decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with 22V reverse stand-off voltage, 27.9V typical breakdown, and 175pF junction capacitance at 22V/1MHz. Its functional architecture enables stable clamping at 27.5–28V up to 40A without thermal derating - a key differentiator versus junction-limited TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) 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 for connector-facing protection. |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve and minimal voltage rise across full 1–40A surge range. |
| Junction Capacitance | 175 pF at 22V/1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
Pinout & Package
SDC36.TCT is housed in a RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad not required - all six terminals are electrically active: three GND pins (1–3) and three IN pins (4–6), enabling parallel connection for lowest possible inductance path to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected with low-inductance vias to maximize 40A capability. |
| 4, 5, 6 | IN | Protected line input; pins tied together at PCB trace to minimize impedance and ensure uniform current sharing during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across 1–40A and –40°C to +125°C - eliminates need for derating or over-spec'ing IPP to meet voltage margin. |
| FET-based shunt architecture | Replaces junction-limited TVS with low-RDS(on) MOSFET - dissipates energy in channel rather than PN junction, improving thermal stability. |
| Ultra-low dynamic resistance | 20 mΩ - reduces voltage overshoot during fast-rising transients and supports higher peak currents without voltage runaway. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - sustains 40A surges while maintaining safe junction temperature in compact DFN footprint. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 27.5–28V clamping at full 40A surge - keeps PD controller (e.g., STUSB4500, TUSB7320) safely below 29V absolute max rating even at 125°C ambient. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., ON Semiconductor NIS5132, TI TPS25940) against EOS in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient clamp preventing gate oxide damage and internal FET avalanche failure during 1.2/50μs surges. Use Value: Clamps below 28V across full temperature range - avoids exceeding 30V VGS(max) or VDS(max) limits of integrated load switch MOSFETs. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Backup Rail Protection |
Use Scenario: Securing 22V auxiliary rails powering cellular modems, GNSS receivers, or sensor fusion modules in outdoor IoT gateways. IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT, and surge protection on unregulated input rails subject to field-installed wiring faults. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and stable clamping ensure uninterrupted operation during repetitive burst noise in industrial environments. |
Use Scenario: Protecting 22V supercapacitor or LiFePO4 backup rails in enterprise SSDs and NVMe storage controllers during hot-plug or power-loss events. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) protector preserving backup rail hold-up time while blocking EOS. Use Value: 130–600nA reverse leakage at 22V minimizes self-discharge - extends backup runtime without requiring additional refresh circuitry. |
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 | Identical electrical specs, same DFN-6 package, identical marking (T22), same tape-and-reel packaging (3,000/reel). | No functional difference - SDC36.TCT and TDS2211P.C are dual-marked variants per Semtech's internal part numbering; both meet Rev 2.5 datasheet. | Select based on distributor stock availability; no design or layout change required. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, 12pF capacitance, optimized for CC/SBU lines - not rated for 40A or 22V bus-level protection. | Designed for low-capacitance data-line protection (e.g., USB-C CC, SBU), not power rail clamping; lacks thermal stability at high IPP. | Use only for signal-line protection; not a functional replacement for SDC36.TCT in power rail applications. |
Compared with TDS2211P.C (identical spec), SDC36.TCT offers full drop-in compatibility; versus uClamp2411ZA, it delivers 67% higher surge current capacity and 14× higher clamping energy handling - making it suitable for primary 22V bus protection where uClamp2411ZA is limited to auxiliary signal lines.
Availability
SDC36.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 RoHS/WEEE compliance.
Supply support for SDC36.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 connectivity in industrial, communications, and consumer markets.
The SDC36.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered to replace conventional TVS diodes in high-reliability 22V power rail protection with superior clamping stability and thermal resilience.
FAQ
What is the exact package type and dimensions of SDC36.TCT?
SDC36.TCT uses a DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with no exposed thermal pad. Pins 1–3 are GND; pins 4–6 are IN. All six terminals must be soldered - the device relies on parallel pin connections to achieve its rated 40A surge performance and low-inductance ground path.
Does SDC36.TCT meet IEC 61000-4-5 surge immunity standards?
Yes, SDC36.TCT is rated for 40A peak pulse current with 8/20μs waveform per IEC 61000-4-5, and also supports ±1kV combination wave (1.2/50μs voltage, 8/20μs current, RS = 42Ω) for unsymmetrical lines - meeting Level 4 industrial surge requirements for 22V systems.
How does SDC36.TCT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with current (VC = VBR + IPP × RDYN), SDC36.TCT maintains 27.5–28V clamping from 1A to 40A due to its FET-based shunt architecture and 20 mΩ dynamic resistance - eliminating thermal derating and ensuring consistent protection across temperature and surge magnitude.
Can SDC36.TCT be used for USB-C CC line protection?
No - SDC36.TCT is optimized for 22V power rail protection (e.g., VBUS), not low-voltage signal lines. For CC/SBU lines, Semtech recommends uClamp2411ZA (24V, 12pF, 24A), which provides lower capacitance and faster response suited to differential signaling integrity.
What is the maximum operating temperature range for SDC36.TCT?
SDC36.TCT is specified for continuous operation from –40°C to +125°C ambient, with clamping voltage remaining stable across this full range - confirmed by characterization data showing ≤0.3V variation in VC from –40°C to +125°C at 40A surge.
SDC36.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 33V (Max)
- Voltage - Breakdown (Min):
- 36V
- Voltage - Clamping (Max) @ Ipp:
- 45V
- Current - Peak Pulse (10/1000µs):
- 4A (1.2/50µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
SDC36.TCT FAQ
1.How can I place an order for SDC36.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SDC36.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 SDC36.TCT reliable?
The price and inventory of SDC36.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDC36.TCT is usually 5 days.
3.What payment methods are accepted for SDC36.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDC36.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDC36.TCT?
SDC36.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDC36.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 SDC36.TCT?
For technical support, including SDC36.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDC36.TCT requirements.
6.How does Aetrix verify that SDC36.TCT is sourced from the original manufacturer or authorized distributors?
All SDC36.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 SDC36.TCT meets industry standards.
7.What is the process for return or replacement of SDC36.TCT?
All SDC36.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SDC36.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 SDC36.TCT part is unused and in its original packaging.
Return procedure for SDC36.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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