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Semtech Corporation SMDA24C-5.TBT
- Part No.:
- SMDA24C-5.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA24C-5.TBT.pdf
- Description:
- TVS DIODE 24VWM 43VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,345
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Product details
Overview
SMDA24C-5.TBT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 24V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.6V clamping at 40A, 20mΩ dynamic resistance, and DFN 1.6×1.6×0.55mm 6-lead package - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SMDA24C-5.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, low dynamic resistance for consistent surge handling, DFN footprint compatibility with high-density PCB layouts, and compliance with IEC 61000-4-2/4-4/4-5 standards for robust system-level EOS resilience.
Technical Context
The SMDA24C-5.TBT 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 conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C, maintains <600nA reverse leakage at 24V, exhibits 175pF junction capacitance at 22V/1MHz, and delivers stable clamping performance independent of ambient temperature - enabling reliable protection in thermally demanding industrial and mobile applications without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24V - defines maximum continuous DC bus voltage the device safely withstands without conduction. |
| Clamping Voltage | 27.6V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 ±1kV surge testing using 42Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - provides robust immunity against human-body-model and proximity discharges. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough to avoid signal integrity degradation on 24V power rails and slow-control lines. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground connection terminals - all three must be soldered to maximize surge current return path and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input terminals - connected in parallel to the 24V rail or I/O line; all three required for full 40A rating and optimal thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies only ±0.5V from 24A to 40A - eliminates need for over-specifying IPP to meet voltage safety margins. |
| Temperature-stable protection | Clamping remains ≤28V from –40°C to +125°C - removes thermal derating calculations required for standard TVS diodes. |
| Low dynamic resistance | 20mΩ enables efficient energy diversion with minimal IR drop - critical for protecting sensitive downstream FETs in load switches. |
| High-energy surge capability | 1120W peak pulse power rating - sustains repeated 40A/8/20μs transients without parametric shift or failure. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 24V PD profiles against lightning-induced surges and connector hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting surge current to ground before it reaches the PD controller or buck converter. Use Value: Maintains 27.6V clamping at 40A ensures PD controller ICs (e.g., STUSB4500, TUSB7320) operate within absolute maximum ratings even at 125°C ambient. |
Use Scenario: Safeguarding input pins of industrial-grade load switches (e.g., ON Semiconductor NIS513x, TI TPS2598x) exposed to 24V DC field wiring. IC Role / Device Role / Timing Role: Primary EOS barrier upstream of the load switch's internal high-side FET, preventing gate oxide damage and latch-up during surge events. Use Value: 20mΩ dynamic resistance limits voltage rise across the protected switch during 40A transients, avoiding overvoltage stress on the integrated driver circuitry. |
| IoT Gateway Power Rail Protection | Programmable Logic Controller (PLC) Digital Input Protection |
Use Scenario: Securing 24V auxiliary power inputs on edge IoT gateways subjected to ESD and EFT in factory or outdoor deployments. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing traditional MOV+TVS stacks, providing faster response and no wear-out mechanism. Use Value: ±4kV EFT immunity (IEC 61000-4-4) and stable clamping ensure uninterrupted operation during repetitive burst noise on shared 24V supply rails. |
Use Scenario: Protecting 24V digital input channels on modular PLC backplanes where field wiring introduces surge coupling from motor drives or solenoids. IC Role / Device Role / Timing Role: Line-side transient clamp on each isolated input channel, interfacing with optocoupler or digital isolator front-ends. Use Value: 175pF capacitance avoids signal delay or distortion on 10kHz–100kHz digital input waveforms while delivering 40A surge handling per channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V working voltage, 27.6V clamping at 40A, same DFN-6 package | Optimized for 22V systems (e.g., USB PD 20V max); lower clamping headroom than SMDA24C-5.TBT in 24V designs | Select when operating voltage is strictly ≤22V and tighter clamping margin is prioritized over 24V compatibility. |
| uClamp2411ZA | 24V working voltage, 33.8V clamping at 20A, SOD-323 package, higher capacitance (350pF) | Lower surge rating (20A vs. 40A); suited for CC/SBU lines, not main power rails | Use only for low-current control lines (e.g., USB-C CC, SBU) where space constraints preclude DFN-6, not as direct replacement for power rail protection. |
Compared with TDS2211P and uClamp2411ZA, the SMDA24C-5.TBT uniquely balances 24V system compatibility, 40A surge capacity, and ultra-stable clamping - making it the only option among the three qualified for high-current 24V industrial power rail protection without layout or thermal compromises.
Availability
SMDA24C-5.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT gateway power rails, and PLC digital input modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMDA24C-5.TBT 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 SMDA24C-5.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 24V industrial and USB-C power systems where clamping stability and surge endurance are critical.
FAQ
What is the maximum continuous operating voltage for SMDA24C-5.TBT?
The SMDA24C-5.TBT has a reverse stand-off voltage (VRWM) of 24V, meaning it can continuously block up to 24V DC without significant leakage or conduction. This makes it suitable for 24V nominal industrial power rails and USB-C PD applications operating at up to 24V. Operation above 24V risks premature triggering and potential device failure.
How does SMDA24C-5.TBT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the SMDA24C-5.TBT uses a triggered FET architecture that maintains clamping voltage within 27.5–28V from 24A to 40A. Its dynamic resistance drops to 20mΩ under surge, yielding near-constant clamping independent of current magnitude or temperature.
Can SMDA24C-5.TBT be used in place of TDS2211P?
The SMDA24C-5.TBT is not a direct drop-in replacement for TDS2211P due to its higher 24V working voltage versus TDS2211P's 22V rating. While both share identical DFN-6 packaging and pinout, substituting SMDA24C-5.TBT in a 22V design may reduce clamping margin. Use SMDA24C-5.TBT only where the protected circuit is rated for ≥24V operation.
What is the recommended PCB layout for SMDA24C-5.TBT to achieve full 40A surge rating?
To achieve the full 40A (8/20μs) rating, all three IN pins (4, 5, 6) must be connected via a single low-inductance trace to the protected line, and all three GND pins (1, 2, 3) must be tied directly to a solid ground plane using multiple vias. Placement within 5mm of the connector and avoidance of stub traces are mandatory - per Semtech's layout guidelines for TDS devices.
Does SMDA24C-5.TBT meet IEC 61000-4-5 surge immunity requirements?
Yes, the SMDA24C-5.TBT is rated for 40A peak pulse current under IEC 61000-4-5 8/20μs waveform and supports ±1kV combination-wave testing (1.2/50μs voltage, 8/20μs current, RS = 42Ω). Its 27.6V clamping at 40A ensures protected downstream components remain within safe operating limits during standardized surge events.
SMDA24C-5.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- SMDAC-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 5
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 50pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
SMDA24C-5.TBT FAQ
1.How can I place an order for SMDA24C-5.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA24C-5.TBT 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 SMDA24C-5.TBT reliable?
The price and inventory of SMDA24C-5.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA24C-5.TBT is usually 5 days.
3.What payment methods are accepted for SMDA24C-5.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA24C-5.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA24C-5.TBT?
SMDA24C-5.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA24C-5.TBT 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 SMDA24C-5.TBT?
For technical support, including SMDA24C-5.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA24C-5.TBT requirements.
6.How does Aetrix verify that SMDA24C-5.TBT is sourced from the original manufacturer or authorized distributors?
All SMDA24C-5.TBT 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 SMDA24C-5.TBT meets industry standards.
7.What is the process for return or replacement of SMDA24C-5.TBT?
All SMDA24C-5.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SMDA24C-5.TBT, 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 SMDA24C-5.TBT part is unused and in its original packaging.
Return procedure for SMDA24C-5.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA24C-5.TBT Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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