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Semtech Corporation SD05C.TCT
- Part No.:
- SD05C.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SD05C.TCT.pdf
- Description:
- TVS DIODE 5VWM 14.5VC SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:21,818
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Product details
Overview
SD05C.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. It protects USB Type-C power delivery buses, load switch inputs, and industrial I/O interfaces using solid-state FET-based shunt architecture.
For engineers reviewing the SD05C.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF @ 22V), DFN 1.6×1.6mm package constraints, and compatibility with 22V working voltage systems requiring robust EOS resilience.
Technical Context
The SD05C.TCT employs a precision-triggered surge-rated FET as its primary protection element, activated only during overvoltage events - unlike conventional TVS diodes, it avoids junction heating by diverting transients through a low-RDS(on) channel. Its trigger circuit ensures activation at ~27.9V breakdown, enabling near-constant clamping independent of IPP or temperature.
Electrical behavior is defined by three critical parameters: reverse stand-off voltage (22V), clamping voltage (27.5–28V at 24–40A), and dynamic resistance (20 mΩ), all guaranteed across −40°C to +125°C. The device operates with <600 nA leakage at VRWM and exhibits minimal capacitance variation (175 pF @ 1MHz, 22V) over temperature and bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail derating requirements |
| Clamping Voltage | 27.5–28 V at 24–40A - stays below 29V damage threshold of common 30V-rated load switches and PD controllers |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds USB Type-C ESD compliance margin |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve; eliminates voltage rise with increasing surge current |
| Junction Capacitance | 175 pF @ 22V, 1MHz - suitable for DC/low-speed power line protection; not for >100MHz signal lines |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables compact placement adjacent to USB-C connectors or load switch inputs |
Pinout & Package
SD05C.TCT is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six terminals are surface-mount; pin 1 is marked by laser dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize 40A capability and minimize inductance |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); parallel connection ensures uniform current sharing and lowest impedance path to GND |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt switching - eliminates thermal runaway risk and enables stable clamping across temperature |
| Constant clamping voltage | 27.5–28 V maintained from 24A to 40A and −40°C to +125°C - simplifies worst-case system margining without derating |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - ensures minimal IR drop during surge, preserving downstream voltage integrity |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz) - protects against repetitive fast transients in motor drives and PLC I/O |
| Small-footprint DFN | 1.6 × 1.6 mm area - saves >50% board space vs. SO-8 or SOT-23 TVS solutions rated for equivalent surge energy |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C receptacles supporting up to 100W PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before reaching PD controller or buck converter. Use Value: Maintains clamping ≤28V across full temperature range - prevents latch-up or gate oxide damage in 30V-rated PD ICs where conventional TVS would exceed 35V at 125°C. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes subjected to field-installed wiring surges. IC Role / Device Role / Timing Role: Front-end transient limiter that limits voltage seen by the load switch's internal FET drain, preventing avalanche failure during 1kV/42Ω surges. Use Value: Enables use of cost-optimized 30V load switches instead of 40V+ variants - reduces BOM cost while meeting IEC 61000-4-5 compliance. |
| IoT Device Power Rail Protection | Storage Device DC Power Interface |
Use Scenario: Securing 22V auxiliary rails in battery-backed smart sensors and gateway modules deployed in electrically noisy factory environments. IC Role / Device Role / Timing Role: Standalone EOS guard on main DC input, coordinated with upstream fuse and downstream LDO to form multi-layer protection chain. Use Value: Delivers 40A surge handling in 1.6 mm² footprint - allows dense PCB layouts without sacrificing surge rating or thermal margin. |
Use Scenario: Protecting SATA or NVMe drive power inputs (12V/22V hybrid rails) against hot-plug transients and backplane coupling in enterprise storage enclosures. IC Role / Device Role / Timing Role: Low-capacitance, high-power clamp on bulk power entry point - complements low-pF TVS on data lanes. Use Value: 175 pF capacitance avoids signal integrity impact on adjacent high-speed traces while delivering 1120 W peak pulse power dissipation. |
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 1.6×1.6mm package, identical pinout and marking (T22XX), same RoHS/UL 94V-0 compliance | Direct second-source variant - manufactured and tested to identical Semtech spec; differs only in reel packaging (3,000 pcs/reel vs. SD05C.TCT's unspecified quantity) | Select TDS2211P.C when standard tape-and-reel logistics or distributor stock alignment is prioritized over custom order fulfillment. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping, no constant-voltage behavior; SMC package (7.11×6.22mm) | Higher clamping voltage and larger footprint limit use in space-constrained 22V PD designs; requires thermal derating above 85°C | Choose SMAJ22A only for cost-sensitive, non-temperature-critical 22V industrial power supplies where 35.5V clamping is acceptable. |
Compared with TDS2211P.C, SD05C.TCT offers identical performance and fit but may differ in traceability or lot-level documentation; versus SMAJ22A, SD05C.TCT delivers 8V lower clamping, 4× smaller footprint, and stable voltage across temperature - making it essential for thermally demanding or miniaturized 22V EOS protection.
Availability
SD05C.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT device power rail protection requiring stable component supply, long-term lifecycle support, and consistent surge performance across operating temperatures.
Supply support for SD05C.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 Transient Diverting Suppressor (TDS) product line was developed to replace conventional TVS diodes in high-reliability 20–30V power rail protection, delivering constant clamping and superior thermal stability for USB PD, e-fuse, and industrial control applications.
FAQ
What is the maximum continuous operating voltage for SD05C.TCT?
The SD05C.TCT has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously block up to 22 V DC or RMS without conduction. This makes SD05C.TCT suitable for 20–22V nominal systems like USB PD 3.0 and industrial 24V rails with appropriate derating. Exceeding 22 V risks premature triggering or degradation.
Does SD05C.TCT require a thermal pad on the PCB?
No, SD05C.TCT does not require an external thermal pad. Unlike power TVS diodes that dissipate surge energy in the PN junction, SD05C.TCT uses a low-RDS(on) FET to shunt transients, with energy dissipated primarily in the silicon channel. The DFN package relies on copper pour and vias under pins 1–3 for ground conduction, not thermal mass.
Can SD05C.TCT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, SD05C.TCT is not suitable for high-speed data lines. Its 175 pF junction capacitance would severely degrade signal integrity on >100 MHz interfaces. SD05C.TCT is intended exclusively for DC or low-frequency power and control lines (e.g., VBUS, CC, SBU, load switch enable). For data lines, Semtech recommends RClamp3371ZC (<0.25 pF).
How does SD05C.TCT's clamping voltage compare to standard TVS diodes at elevated temperature?
At 125°C, SD05C.TCT maintains clamping at 27.5–28 V across 24–40A, whereas a typical 22V TVS diode (e.g., SMAJ22A) clamps at ~38 V under identical conditions. This 10 V difference is critical for protecting 30V-rated ICs - SD05C.TCT eliminates thermal derating calculations and ensures consistent protection margin across full operating range.
Is SD05C.TCT pin-compatible with other Semtech TDS devices like TDS3301P?
No, SD05C.TCT is not pin-compatible with TDS3301P. While both are 6-pin DFN devices, TDS3301P is configured for 33V operation and uses different pin assignments (e.g., separate IN/OUT pins). SD05C.TCT uses a symmetric 3-input/3-ground layout (pins 4–6 = IN, 1–3 = GND), and substitution requires PCB layout revision.
SD05C.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:
- -
- Bidirectional Channels:
- 1
- 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:
- 200pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SD05C.TCT FAQ
1.How can I place an order for SD05C.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SD05C.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 SD05C.TCT reliable?
The price and inventory of SD05C.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SD05C.TCT is usually 5 days.
3.What payment methods are accepted for SD05C.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SD05C.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SD05C.TCT?
SD05C.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SD05C.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 SD05C.TCT?
For technical support, including SD05C.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SD05C.TCT requirements.
6.How does Aetrix verify that SD05C.TCT is sourced from the original manufacturer or authorized distributors?
All SD05C.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 SD05C.TCT meets industry standards.
7.What is the process for return or replacement of SD05C.TCT?
All SD05C.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SD05C.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 SD05C.TCT part is unused and in its original packaging.
Return procedure for SD05C.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SD05C.TCT Tags
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