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Semtech Corporation SMDA15C-8.TBT
- Part No.:
- SMDA15C-8.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SMDA15C-8.TBT.pdf
- Description:
- TVS DIODE 15VWM 24VC 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,554
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Product details
Overview
SMDA15C-8.TBT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SMDA15C-8.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for flat VC vs. IPP behavior, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 surge standards in space-constrained 22V bus protection.
Technical Context
The SMDA15C-8.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 stable 22V reverse stand-off voltage and <600nA leakage at VRWM, and delivers 1120W peak pulse power handling. Its functional architecture isolates transient energy dissipation into the FET channel rather than the junction, enabling superior thermal robustness and consistent clamping across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22 V - Maximum continuous operating voltage before clamping activation; defines safe DC/AC bus rating. |
| Clamping Voltage (IPP = 40A) | 27.5–28 V - Actual voltage seen by protected IC during worst-case 40A surge; enables margin below 30V damage thresholds. |
| Peak Pulse Current | 40 A (8/20μs) - Sustains industrial-level lightning surges per IEC 61000-4-5 without degradation. |
| Dynamic Resistance | 20 mΩ - Low ON-resistance ensures minimal voltage rise under increasing surge current; enables flat VC curve. |
| Junction Capacitance | 175 pF @ 22V, 1MHz - Low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Survives direct human-body model discharges in handheld and portable equipment. |
| Operating Temperature | –40°C to +125°C - Fully specified performance across automotive-grade and industrial ambient ranges. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| Pin 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection ensures uniform current sharing and optimal thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage across IPP range | 27.5–28 V from 24A to 40A - Eliminates design margin uncertainty caused by rising VC in standard TVS diodes. |
| Low dynamic resistance | 20 mΩ - Enables near-ideal shunt behavior, reducing power dissipation and thermal stress during multi-pulse events. |
| Stable clamping over temperature | No VC drift across –40°C to +125°C - Ensures consistent protection in uncontrolled environments like industrial enclosures. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns) - Resists repetitive fast transients common in motor drives and relay-switched systems. |
| Small-footprint DFN package | 1.6 mm × 1.6 mm - Saves >50% board area versus SO-8 or SOT-23 alternatives while maintaining 40A surge rating. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C PD ports against ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at full 40A surge, staying well below typical 30V PD controller absolute maximum ratings even at 125°C. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways. IC Role / Device Role / Timing Role: Transient diverting element that limits voltage across the load switch's internal FET drain-source during surge events. Use Value: Prevents gate oxide damage and latch-up in load switches by holding clamping voltage below their rated VDS(max) with no derating required. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
Use Scenario: Securing 22V auxiliary rails in battery-powered edge sensors and wireless gateways exposed to field ESD and coupling noise. IC Role / Device Role / Timing Role: Single-component, low-capacitance surge suppressor for compact PCBs where layout space and thermal mass are constrained. Use Value: Delivers 40A surge capability in 2.56 mm² footprint with only 175pF loading - avoids signal distortion on shared power domains. |
Use Scenario: Shielding 22V supply inputs of NVMe SSDs, SAS controllers, and enterprise storage backplanes from system-level surges. IC Role / Device Role / Timing Role: High-reliability front-end clamp ensuring downstream PMICs and flash controllers survive repeated 1kV/42Ω surges. Use Value: Guarantees ≤28V clamping at 40A and ±30kV ESD - meets stringent data center surge immunity requirements without derating. |
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 die, identical electrical specs and package; SMDA15C-8.TBT is Semtech's alternate marking for TDS2211P per official ordering documentation. | Direct functional and mechanical replacement; same pinout, thermal profile, and layout. | Select SMDA15C-8.TBT when sourcing from distributors using this part number; verify reel marking matches T22 date code format. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, higher 33V clamping at 20A, 12pF capacitance - optimized for CC/SBU lines, not power rails. | Intended for low-voltage, low-capacitance data-line protection; unsuitable for 22V bus or 40A surge duty. | Use uClamp2411ZA only for auxiliary signaling lines; SMDA15C-8.TBT remains mandatory for main power rail protection. |
Compared with TDS2211P, SMDA15C-8.TBT is an identical device with alternate marking - no design or layout changes needed. Versus uClamp2411ZA, it provides 2× peak current rating and 5V lower clamping at rated surge, making it the sole suitable option for 22V power-line EOS protection.
Availability
SMDA15C-8.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V IoT power rail designs requiring stable component supply, long-term lifecycle support, and guaranteed surge performance consistency.
Supply support for SMDA15C-8.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 SMDA15C-8.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power-rail protection with flat-clamp, low-RDYN performance.
FAQ
Is SMDA15C-8.TBT electrically and mechanically identical to TDS2211P?
Yes, SMDA15C-8.TBT is Semtech's alternate orderable part number for the TDS2211P device. Both share identical die, DFN-6 package dimensions (1.6 mm × 1.6 mm × 0.55 mm), pinout, electrical specifications including 22V VRWM, 27.5–28V clamping at 40A, and ±30kV ESD rating. The SMDA15C-8.TBT marking appears on tape-and-reel packaging with T22 date code format, confirming full equivalence to TDS2211P.
What is the maximum continuous operating voltage for SMDA15C-8.TBT?
The SMDA15C-8.TBT has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously withstand up to 22 V DC or RMS AC on its IN pins relative to GND without entering conduction. This makes it suitable for nominal 20V USB PD buses and 22V industrial power rails where transient spikes must be suppressed without affecting normal operation.
Does SMDA15C-8.TBT require a thermal pad or heatsink for 40A surge handling?
No, SMDA15C-8.TBT does not require a thermal pad or external heatsink. Its surge energy is dissipated within the integrated FET channel, not the silicon junction, and the DFN-6 package is qualified for 40A (8/20μs) without thermal derating. Layout best practice is to connect all three GND pins (1, 2, 3) and all three IN pins (4, 5, 6) with low-inductance traces and multiple vias to internal ground planes - no copper pour or thermal relief is needed beneath the device body.
Can SMDA15C-8.TBT be used to protect high-speed data lines like USB SS or PCIe?
No, SMDA15C-8.TBT is not suitable for high-speed data line protection due to its 175 pF junction capacitance, which would severely degrade signal integrity on superspeed lanes. It is specifically designed for 22V power rail and low-frequency control line protection. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices such as RClamp3371ZC (<0.25 pF) - not SMDA15C-8.TBT.
How does SMDA15C-8.TBT's clamping behavior differ from standard TVS diodes under temperature variation?
Unlike standard TVS diodes whose clamping voltage rises with both peak current and temperature, SMDA15C-8.TBT maintains a stable 27.5–28V clamping voltage from –40°C to +125°C and across its full 24–40A surge range. This is achieved via its FET-based architecture: as temperature increases, the shunt FET's RDS(on) decreases, counteracting thermal drift - a key advantage confirmed in Figure 4 of the TDS2211P datasheet.
SMDA15C-8.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- SMDAC-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 8
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24V
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SMDA15C-8.TBT FAQ
1.How can I place an order for SMDA15C-8.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMDA15C-8.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 SMDA15C-8.TBT reliable?
The price and inventory of SMDA15C-8.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMDA15C-8.TBT is usually 5 days.
3.What payment methods are accepted for SMDA15C-8.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMDA15C-8.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMDA15C-8.TBT?
SMDA15C-8.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMDA15C-8.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 SMDA15C-8.TBT?
For technical support, including SMDA15C-8.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMDA15C-8.TBT requirements.
6.How does Aetrix verify that SMDA15C-8.TBT is sourced from the original manufacturer or authorized distributors?
All SMDA15C-8.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 SMDA15C-8.TBT meets industry standards.
7.What is the process for return or replacement of SMDA15C-8.TBT?
All SMDA15C-8.TBT units undergo pre-shipment inspection (PSI). If there is an issue with SMDA15C-8.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 SMDA15C-8.TBT part is unused and in its original packaging.
Return procedure for SMDA15C-8.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMDA15C-8.TBT Tags
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ESD9B5.0ST5G
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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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Diodes Incorporated
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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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