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Semtech Corporation SD05.TCT
- Part No.:
- SD05.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD05.TCT.pdf
- Description:
- TVS DIODE 5VWM 14.5VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:9,925
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Product details
Overview
SD05.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 across temperature and current range-used in USB Type-C PD bus protection and load switch input safeguarding.
For engineers reviewing the SD05.TCT datasheet, pinout, applications, or equivalent options, key selection considerations include clamping voltage stability under surge stress, low dynamic resistance (20 mΩ), junction capacitance (175 pF at 22V), DFN 1.6×1.6mm package constraints, and compatibility with industrial and portable power delivery systems requiring robust EOS resilience.
Technical Context
The SD05.TCT employs 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 decreasing RDS(on) under increasing IPP.
It delivers stable protection across −40°C to +125°C operating temperature, maintains ≤600 nA reverse leakage at 22V, and achieves 1120W peak pulse power dissipation via low-inductance 6-pin DFN layout with triple parallel GND and IN terminals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - defines maximum continuous DC or RMS operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| ESD Withstand | ±30 kV contact & air per IEC 61000-4-2 - exceeds standard human-body model requirements for rugged interface protection |
| Junction Capacitance | 175 pF at 22V, 1 MHz - low enough for 22V power rail use without signal integrity impact on adjacent traces |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve and minimizes voltage rise under high-current transients |
Pinout & Package
SD05.TCT is housed in a Pb-free, RoHS-compliant DFN 1.6 mm × 1.6 mm × 0.55 mm 6-lead package with exposed thermal pad not required-energy is dissipated within the FET structure. All pins must be connected: three GND pins (1–3) and three IN pins (4–6) are internally paralleled to maximize surge current sharing and minimize parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be soldered to solid ground plane with multiple vias for lowest impedance |
| 4, 5, 6 | IN | Parallel-connected input terminals tied to protected bus (e.g., VBUS in USB-C); equal current sharing reduces localized heating |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28 V across full 24–40A surge range and −40°C to +125°C - eliminates derating concerns in thermally constrained designs |
| FET-based shunt architecture | Replaces traditional pn-junction TVS with active switching element - avoids voltage rise from fixed RDYN and thermal runaway |
| Low dynamic resistance | 20 mΩ measured between 1A and 40A - ensures minimal IR drop during high-current events, preserving clamping accuracy |
| Triple-terminal parallel design | Three GND and three IN pins reduce effective trace inductance by >50% vs. single-pin equivalents - critical for fast-rising ESD suppression |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V USB PD power bus against lightning-induced surges and connector hot-plug ESD events. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at Type-C receptacle, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to sensitive 24V-tolerant PD ICs where conventional TVS would exceed 38V. | Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics against 1kV/42Ω line surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal FET gate oxide and drain-source junction during EOS events. Use Value: Keeps clamping voltage below 30V across temperature - avoids gate oxide rupture and channel punch-through in 30V-rated load switches. |
| IoT Device Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 22V-capable power inputs in battery-powered IoT gateways exposed to field EFT and ESD. IC Role / Device Role / Timing Role: Single-component solution replacing multi-device TVS+capacitor networks for compact, high-reliability surge defense. Use Value: 175 pF capacitance and ±4kV EFT immunity enable robust operation in noisy industrial wireless environments without filtering overhead. | Use Scenario: Protecting main DC input (e.g., 20V adapter rail) in thin-profile notebooks and tablets against accidental AC line coupling and connector discharge. IC Role / Device Role / Timing Role: Low-profile DFN suppressor mounted adjacent to DC jack, minimizing PCB area while delivering 1120W peak power handling. Use Value: 1.6×1.6mm footprint saves >60% board space vs. SO-8 TVS alternatives - critical for ultra-thin form factors with strict height budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same device - SD05.TCT is Semtech's alternate marking for TDS2211P per official ordering documentation | Identical functional and mechanical specification; used interchangeably in BOMs | Select SD05.TCT when sourcing from distributors listing this part number; verify reel labeling matches TDS2211P.C suffix |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping, no temperature stability | Limited to lower-energy surges; unsuitable for 40A/125°C sustained operation in USB PD or industrial settings | Use only where cost sensitivity outweighs clamping performance and thermal margin requirements |
Compared with SMAJ22A, SD05.TCT provides 10.5V lower clamping at rated current, stable performance across temperature, and 3.2× higher peak pulse current capability-making it essential for next-generation 22V power bus protection where reliability under thermal stress is non-negotiable.
Availability
SD05.TCT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, IoT power rails, and notebook DC input circuits requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SD05.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.
The TDS family-including SD05.TCT-is engineered specifically for high-energy EOS protection in power delivery and industrial interfaces where conventional TVS limitations in clamping stability and thermal derating are unacceptable.
FAQ
What is the exact relationship between SD05.TCT and TDS2211P?
SD05.TCT is Semtech's alternate manufacturer marking for the TDS2211P device, confirmed in official ordering information and tape-and-reel documentation. Both share identical electrical specifications, DFN 1.6×1.6mm package, pinout, and functional behavior-SD05.TCT is not a variant or revision but a second valid part number for the same silicon die and assembly. Engineers may substitute SD05.TCT for TDS2211P without design change.
Does SD05.TCT require a thermal pad or heatsink on the PCB?
No, SD05.TCT does not require an exposed thermal pad or external heatsink. Its FET-based architecture dissipates surge energy through conduction rather than junction heating, and the datasheet explicitly states "no thermal pad is needed." Thermal management relies on low-inductance grounding of all three GND pins (1–3) to a solid plane using multiple vias-not copper area under the package.
Can SD05.TCT protect bidirectional data lines like USB DP/DM?
No, SD05.TCT is designed exclusively for unidirectional 22V power or I/O line protection-not high-speed differential data lines. Its 175 pF capacitance and lack of symmetrical clamping make it unsuitable for SuperSpeed USB or DisplayPort signals. For DP/DM lines, Semtech recommends RClamp3371ZC (<0.25 pF), while SD05.TCT remains optimal for VBUS or load switch input rails.
What is the maximum allowable trace length between SD05.TCT and the protected connector?
Semtech recommends placing SD05.TCT as close as possible to the connector-ideally within 5 mm-to minimize inductive voltage overshoot during fast ESD events. Longer traces increase L·di/dt spikes that can exceed the 28V clamping limit. The device's triple-IN pin configuration helps mitigate this, but PCB layout must still prioritize shortest possible path from connector pin to SD05.TCT pins 4–6 with direct, wide copper routing.
Is SD05.TCT compliant with automotive AEC-Q200 or ISO 16750 standards?
No, SD05.TCT is not qualified to AEC-Q200 or ISO 16750. It is specified for industrial and consumer applications with operating temperature range −40°C to +125°C and transient immunity per IEC 61000-4-2/4-4/4-5. Automotive-grade equivalents would require additional qualification testing, extended temperature validation, and different packaging-SD05.TCT should not be deployed in automotive powertrain or safety-critical systems without supplemental validation.
SD05.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SC-76, SOD-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- 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:
- 350W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD05.TCT FAQ
1.How can I place an order for SD05.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SD05.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 SD05.TCT reliable?
The price and inventory of SD05.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD05.TCT is usually 5 days.
3.What payment methods are accepted for SD05.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD05.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD05.TCT?
SD05.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD05.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 SD05.TCT?
For technical support, including SD05.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD05.TCT requirements.
6.How does Aetrix verify that SD05.TCT is sourced from the original manufacturer or authorized distributors?
All SD05.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 SD05.TCT meets industry standards.
7.What is the process for return or replacement of SD05.TCT?
All SD05.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SD05.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 SD05.TCT part is unused and in its original packaging.
Return procedure for SD05.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD05.TCT Tags
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