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Semtech Corporation TDS2261P.C
- Part No.:
- TDS2261P.C
- Manufacturer:
- Semtech Corporation
- Category:
- Surge Suppression Ics
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TDS2261P.C.pdf
- Description:
- TDS, 22V, 40A, DFN 2.0X2.0X0.75M
- Quantity:
- Payment:
- Shipping:
Inventory:746
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Product details
Overview
TDS2261P.C 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 - deployed in USB PD, USB Type-C, and industrial load switch input protection.
For engineers reviewing the TDS2261P.C datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, low dynamic resistance (<20mΩ), 175pF junction capacitance at 22V, DFN 1.6×1.6mm package compatibility with high-density PCB layouts, and compliance with IEC 61000-4-4/4-5 standards.
Technical Context
The TDS2261P.C 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing current.
It operates over –40°C to +125°C, maintains ≤600nA reverse leakage at 22V, and delivers 1120W peak pulse power (8/20μs). Its functional architecture separates trigger and conduction paths, enabling stable 27.5–28V clamping at both 24A and 40A surges with 2Ω source impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform, RS = 2Ω) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds standard USB interface ESD robustness requirements. |
| Dynamic Resistance | 20mΩ - enables low-voltage drop during conduction, minimizing power dissipation and thermal stress. |
| Junction Capacitance | 175pF at VR = 22V, f = 1MHz - compatible with medium-speed data/power lines (e.g., VBUS, load switch inputs), not superspeed lanes. |
| Package | DFN 1.6mm × 1.6mm × 0.55mm, 6-lead - supports compact placement near connectors with minimal board area use. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current sharing and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Input connection to protected line (e.g., VBUS); parallel connection of all three pins ensures uniform current distribution and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V from 24A to 40A surge - eliminates design margin inflation needed with traditional TVS diodes. |
| Temperature-stable clamping | Clamps at ~27.6V across –40°C to +125°C - removes thermal derating calculations for industrial ambient conditions. |
| FET-based surge conduction | Shunt FET with ultra-low RDS(on) dissipates energy externally rather than in a PN junction - improves reliability under repeated surges. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz bursts) - protects against fast repetitive transients in motor drives and PLC environments. |
| Low leakage at operating voltage | ≤600nA at 22V - avoids system-level quiescent current penalties in battery-powered IoT and portable devices. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB Type-C ports supporting up to 20V PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller/load switch, clamping surges before they reach sensitive silicon. Use Value: Maintains 27.6V clamping at 40A and 125°C - prevents overvoltage damage to USB PD controllers rated for ≤24V absolute max, unlike TVS diodes whose clamping rises with temperature and current. |
Use Scenario: Securing input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Primary front-end EOS protector for high-side FET gate drivers and current-sense circuits, absorbing 8/20μs surges before internal FET breakdown. Use Value: Limits clamping to 28V across full temperature and current range - keeps load switch drain-source voltage within safe SOA, avoiding latch-up or permanent failure. |
| IoT Device Power Rail Protection | Storage Device VCC Line Protection |
|
Use Scenario: Shielding 22V-capable power rails in edge-node sensors and wireless gateways subjected to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main DC input, placed adjacent to connector to minimize trace inductance coupling. Use Value: Delivers ±30kV ESD immunity and 40A surge capability in 1.6×1.6mm footprint - enables ruggedized small-form-factor designs without sacrificing protection level. |
Use Scenario: Safeguarding 22V supply lines in NVMe SSD enclosures and enterprise storage backplanes exposed to hot-plug transients and system-level surges. IC Role / Device Role / Timing Role: Bus-level transient suppressor on primary power rail, coordinated with downstream low-capacitance TVS for signal integrity. Use Value: Provides 1120W peak pulse power handling with 175pF capacitance - balances surge robustness and minimal impact on power rail stability during high-frequency switching. |
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 | Same family, identical electrical specs and package - direct variant with confirmed production status and tape-and-reel packaging. | Identical use case coverage; validated in USB Type-C and load switch reference designs. | Select TDS2211P.C when requiring documented qualification data and full production availability per Semtech's ordering matrix. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A (8/20μs); higher clamping, no temperature stability, 1000pF typical CJ. | Acceptable only for lower-current, non-temperature-critical applications where 35.5V clamping is tolerable. | Choose SMAJ22A only if cost sensitivity outweighs clamping performance and board space constraints - not suitable for USB PD or high-temp industrial use. |
Compared with TDS2211P.C and SMAJ22A, TDS2261P.C offers identical core protection performance but with updated marking and packaging configuration (Tape & Reel, 7″ reel, 3,000 pcs); it is not a functional upgrade but a logistics variant optimized for automated SMT assembly and long-term supply continuity.
Availability
TDS2261P.C 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, consistent parametric performance, and RoHS-compliant DFN packaging.
Supply support for TDS2261P.C 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 semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The TDS series is Semtech's proprietary transient diverting suppressor product line, engineered to replace conventional TVS diodes in high-reliability 22V–36V power and interface protection applications where clamping stability and thermal robustness are critical.
FAQ
What is the primary protection function of the TDS2261P.C?
The TDS2261P.C functions as a transient diverting suppressor that shunts high-energy EOS events-such as ESD, lightning-induced surges, and EFT bursts-to ground using a precision-triggered FET. Unlike TVS diodes, it maintains a stable ~27.6V clamping voltage across 24A–40A surges and –40°C to +125°C, making TDS2261P.C ideal for protecting 22V power rails in USB PD and industrial systems.
How does the TDS2261P.C differ from standard TVS diodes in clamping behavior?
The TDS2261P.C uses a surge-rated FET and trigger circuit instead of a PN junction, resulting in near-constant clamping voltage (~27.6V) across its full 40A surge range and operating temperature. Standard TVS diodes exhibit linear clamping rise (VC = VBR + IPP × RDYN); for example, a 22V TVS may clamp at 38V at 24A and 125°C. This makes TDS2261P.C more predictable and reliable for safety-critical 22V bus protection.
Can the TDS2261P.C be used on high-speed data lines like USB SuperSpeed or PCIe?
No - the TDS2261P.C has 175pF junction capacitance at 22V, which is too high for SuperSpeed (5–20 Gbps) or PCIe signal integrity. It is intended exclusively for power lines (VBUS, load switch inputs) and medium-speed control lines. For USB SS, DP/DM, or CC/SBU lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) or uClamp2411ZA - not the TDS2261P.C.
What is the correct PCB layout practice for optimal performance of the TDS2261P.C?
Place TDS2261P.C as close as possible to the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using multiple vias. Avoid thermal pads - energy is dissipated in the FET channel, not the die junction. This layout minimizes parasitic inductance and ensures full 40A surge capability for TDS2261P.C.
Is the TDS2261P.C pin-compatible with the TDS2211P.C?
Yes - TDS2261P.C and TDS2211P.C share identical DFN 1.6×1.6mm 6-lead package, pinout (Pins 1–3 = GND, Pins 4–6 = IN), and full electrical specifications. The "2261" vs "2211" designation reflects Semtech's internal revision and packaging configuration (both are Rev 2.5, same datasheet), not functional differentiation. TDS2261P.C is a logistics variant with updated tape-and-reel packaging (3,000 pcs/7″ reel) and date-code marking format.
TDS2261P.C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-WDFN Exposed Pad
- Series:
- SurgeSwitch®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- 22V
- Technology:
- Internal Switch
- Number of Circuits:
- 1
- Applications:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MLPD (2x2)
TDS2261P.C FAQ
1.How can I place an order for TDS2261P.C through Aetrix?
Please submit a Request for Quotation (RFQ) for TDS2261P.C 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 TDS2261P.C reliable?
The price and inventory of TDS2261P.C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDS2261P.C is usually 5 days.
3.What payment methods are accepted for TDS2261P.C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDS2261P.C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDS2261P.C?
TDS2261P.C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDS2261P.C 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 TDS2261P.C?
For technical support, including TDS2261P.C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDS2261P.C requirements.
6.How does Aetrix verify that TDS2261P.C is sourced from the original manufacturer or authorized distributors?
All TDS2261P.C 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 TDS2261P.C meets industry standards.
7.What is the process for return or replacement of TDS2261P.C?
All TDS2261P.C units undergo pre-shipment inspection (PSI). If there is an issue with TDS2261P.C, 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 TDS2261P.C part is unused and in its original packaging.
Return procedure for TDS2261P.C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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