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Semtech Corporation F25
- Part No.:
- F25
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
F25.pdf
- Description:
- DIODE GEN PURP 2.5KV 350MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,964
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed to protect 22V-rated I/O or power lines against high-energy electrical overstress (EOS), ESD, and surge events in USB Type-C, USB PD, and industrial load-switch interfaces. It delivers ±30kV IEC 61000-4-2 ESD protection, 40A peak pulse current (8/20μs), constant 27.5–28V clamping across 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance at 22V.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over temperature and current, low dynamic resistance for minimal voltage overshoot, DFN-6 footprint compatibility with high-density USB PD layouts, and verified performance in combination-wave (1.2/50μs + 8/20μs) surge testing per IEC 61000-4-5.
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions.
It operates as a shunt device between protected line (pins 4–6) and ground (pins 1–3), with a 22V reverse stand-off voltage and 25–27.9V breakdown. Its 20mΩ dynamic resistance and 175pF capacitance at 22V enable robust protection without signal integrity degradation on high-speed or power-bus applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage of protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave) - ensures downstream 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 with 2Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards for connector-facing protection. |
| Dynamic Resistance | 20mΩ - minimizes voltage rise (ΔV = IPP × RDYN) during surge, enabling tighter clamping than TVS diodes. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for USB PD VBUS protection without affecting power delivery regulation loop stability. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound, tape-and-reel packaging (3,000 units/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 handling and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., USB PD VBUS); parallel connection ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A range and −40°C to +125°C - eliminates derating uncertainty in thermal or high-current environments. |
| FET-based shunt architecture | Surge-rated MOSFET + precision trigger circuit - replaces fixed-RDYN TVS with active clamping that improves as current rises. |
| Low dynamic resistance | 20mΩ - reduces clamping overshoot by >50% vs. typical 100–200mΩ TVS devices at 40A, protecting sensitive load switches. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated surge events in industrial equipment and remote metering without degradation. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V USB PD VBUS lines from lightning-induced surges and connector ESD in portable notebooks and docking stations. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at Type-C connector, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current-enabling reliable protection where standard TVS would exceed 38V at 125°C and 24A. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in robotics, remote meters, and IoT gateways exposed to 1kV/42Ω surges. IC Role / Device Role / Timing Role: Primary EOS protection element on VIN rail, limiting voltage seen by internal FET gate oxide and overvoltage protection circuitry. Use Value: 20mΩ RDYN prevents destructive voltage overshoot during fast-rising transients, extending load switch lifetime and avoiding false OVP trips. |
| IoT Device Power Bus Protection | Storage Device Interface Protection |
|
Use Scenario: Securing 22V-capable power rails in battery-powered edge sensors and wireless modules subject to EFT bursts (±4kV, 5/50ns) per IEC 61000-4-4. IC Role / Device Role / Timing Role: Single-component solution for EOS suppression on main supply input, replacing multi-device TVS+RC networks. Use Value: ±4kV EFT immunity and stable clamping ensure uninterrupted operation in noisy factory or utility environments without firmware resets or brownouts. |
Use Scenario: Protecting SATA or NVMe power delivery paths in external SSD enclosures and enterprise storage arrays against hot-plug transients and ESD. IC Role / Device Role / Timing Role: High-power transient clamp on 12V/19V/22V auxiliary rails feeding PMICs or interface controllers. Use Value: 40A surge rating and 1120W peak power handling prevent latch-up or permanent damage during repeated insertion cycles in datacenter infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A (8/20μs), higher RDYN (~150mΩ), no clamping stability over temperature. | Higher clamping voltage limits use in 22V systems with tight margin; requires derating above 85°C. | Select SMAJ22A only if cost sensitivity outweighs clamping performance and thermal stability requirements. |
| TPD2E007DBVR | Low-capacitance (1.5pF) dual-channel ESD protector; 22V VRWM, 12A IPP, not rated for IEC 61000-4-5 surge. | Designed for high-speed data lines (e.g., USB 2.0 D+/D−), not power bus protection. | Use TPD2E007DBVR for DP/DM or CC line ESD only; TDS2211P remains required for VBUS and load-switch inputs. |
Compared with SMAJ22A and TPD2E007DBVR, the TDS2211P uniquely combines 40A surge capability, 27.5–28V flat clamping, and 20mΩ dynamic resistance-making it the only option qualified for 22V power-line protection in USB PD and industrial load-switch designs requiring IEC 61000-4-5 compliance.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load-switch inputs, and IoT device power bus protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TDS2211P 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, power management, and protection solutions.
The TDS family was developed to replace conventional TVS diodes in high-reliability power-line protection, delivering stable clamping via FET-based architecture for USB PD, industrial, and automotive applications.
FAQ
What is the maximum continuous operating voltage for the TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC without significant leakage or conduction. This makes it suitable for protecting 20V USB PD VBUS lines and other 22V-rated power rails. Exceeding this voltage risks premature triggering or accelerated degradation of the TDS2211P.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P uses a surge-rated FET activated by a precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting the I×R voltage rise. This results in stable clamping-27.5–28V-from 24A to 40A (8/20μs), unlike TVS diodes whose clamping rises linearly with current. The TDS2211P maintains this behavior from −40°C to +125°C.
Can the TDS2211P replace a standard TVS diode in an existing 22V protection design?
Yes, the TDS2211P can replace a standard TVS diode in 22V applications-but only if the PCB layout accommodates its 6-pin DFN package and all pins (1–3 GND, 4–6 IN) are properly connected. Its lower clamping voltage (27.5–28V vs. ~35–40V for TVS) may require revalidation of downstream component margins, but improves overall system robustness. The TDS2211P is not pin-compatible with 2-pin SOD or SMA packages.
What is the significance of the 20mΩ dynamic resistance specification for the TDS2211P?
The 20mΩ dynamic resistance (RDYN) means the TDS2211P adds minimal voltage overshoot during surge events-ΔV ≈ 40A × 0.02Ω = 0.8V-compared to TVS diodes with 100–200mΩ RDYN. This enables tighter clamping control, protects sensitive load switches from gate-oxide stress, and avoids false overvoltage trips in PMICs. The value is measured between 1A and 40A using 8/20μs pulses.
Is the TDS2211P suitable for protecting high-speed data lines like USB 3.x or PCIe?
No, the TDS2211P is not suitable for high-speed data lines. Its 175pF junction capacitance at 22V is optimized for power-bus protection-not signal integrity. For USB 3.x, Thunderbolt, or PCIe lanes, low-capacitance ESD protectors like RClamp3371ZC (<0.25pF) are required. The TDS2211P is intended exclusively for VBUS, CC, SBU, and load-switch input protection where bandwidth is not critical.
F25 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 2500 V
- Current - Average Rectified (Io):
- 350mA
- Voltage - Forward (Vf) (Max) @ If:
- 5 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 250 ns
- Current - Reverse Leakage @ Vr:
- 250 nA @ 1500 V
- Capacitance @ Vr, F:
- 2.5pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
F25 FAQ
1.How can I place an order for F25 through Aetrix?
Please submit a Request for Quotation (RFQ) for F25 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 F25 reliable?
The price and inventory of F25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for F25 is usually 5 days.
3.What payment methods are accepted for F25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for F25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for F25?
F25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your F25 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 F25?
For technical support, including F25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your F25 requirements.
6.How does Aetrix verify that F25 is sourced from the original manufacturer or authorized distributors?
All F25 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 F25 meets industry standards.
7.What is the process for return or replacement of F25?
All F25 units undergo pre-shipment inspection (PSI). If there is an issue with F25, 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 F25 part is unused and in its original packaging.
Return procedure for F25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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