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Semtech Corporation PFF0
- Part No.:
- PFF0
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
PFF0.pdf
- Description:
- DIODE GEN PURP 1KV 1A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,736
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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 EOS, ESD, and surge events using a shunt FET architecture; it delivers ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, 27.5–28V clamping voltage at 40A, and operates from –40°C to +125°C in USB Type-C PD and industrial load-switch input protection applications.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and current, dynamic resistance ≤20 mΩ, junction capacitance of 175 pF at 22V, DFN 1.6×1.6mm 6-lead package constraints, and compatibility with 22V bus protection where conventional TVS diodes exhibit rising clamping under thermal or current stress.
Technical Context
The TDS2211P implements a precision-triggered, surge-rated FET as its primary protection element - not a pn-junction TVS - enabling near-constant clamping voltage (27.5–28V) across 24A–40A peak pulse currents and –40°C to +125°C operating temperatures. Its trigger circuit activates the shunt FET when transient voltage exceeds breakdown, leveraging ultra-low RDS(on) to minimize voltage rise during conduction.
This architecture eliminates the linear VC = VBR + IPP × RDYN dependency seen in standard TVS devices. Instead, clamping remains stable due to decreasing FET on-resistance with increasing current, resulting in <20 mΩ dynamic resistance and minimal thermal derating impact on surge capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or degradation |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - ensures downstream 22V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge |
| Peak Pulse Current | 40 A (8/20μs) - supports IEC 61000-4-5 Level 4 industrial surge immunity with 2Ω source impedance |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements for connector-facing protection |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces |
| Dynamic Resistance | 20 mΩ - enables stable clamping by minimizing I×R voltage rise across full 1–40A surge range |
| Package | DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead - enables high-density placement near USB-C connectors or load switch inputs |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB-C); all three pins are internally tied and must be shorted externally to achieve rated 40A capability |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28 V from 24A to 40A and –40°C to +125°C - avoids overvoltage failure of 22V-rated controllers under thermal stress |
| Shunt-FET protection core | Replaces traditional TVS junction with low-RDS(on) MOSFET activated by precision trigger - reduces energy dissipation in silicon junction and improves reliability |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) - supports repeated industrial lightning-surge events without parameter shift or wear-out |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - ensures minimal voltage overshoot during fast-rising transients (e.g., ESD) |
| Integrated multi-pin layout | Three parallel IN and three parallel GND terminals - lowers effective trace inductance and distributes surge current across multiple bond wires |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V USB-C VBUS lines in notebooks, tablets, and docking stations against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at the Type-C receptacle, clamping transients before they reach the PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false OVP trips and ensures robust operation where TVS devices exceed 35V at 125°C. | Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways exposed to field surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across the load switch's internal FET drain-source during EOS events. Use Value: Keeps clamping voltage below the FET's absolute maximum VDS, preventing avalanche-induced latch-up or permanent gate oxide damage. |
| IoT Device Power Rail Protection | Storage Device Interface Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-backed edge sensors and wireless gateways subjected to EFT bursts and cable discharge events. IC Role / Device Role / Timing Role: Single-device solution for unsymmetrical line protection with ±4kV EFT immunity per IEC 61000-4-4. Use Value: Eliminates need for series impedance or RC filtering - preserves fast response while delivering stable clamping without signal distortion. | Use Scenario: Shielding SATA or PCIe auxiliary power lines in SSD enclosures and NAS systems from connector-induced EOS during hot-swap operations. IC Role / Device Role / Timing Role: High-energy suppressor co-located with power connector to absorb >40A surge energy before reaching storage controller ICs. Use Value: Prevents data corruption and controller reset by limiting bus overvoltage to ≤28V - well below typical 30V tolerance of PMICs and interface ICs. |
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 @ 24.7A; higher clamping, no temperature stability | Higher clamping voltage increases risk of damaging 22V-rated ICs at elevated ambient temperatures | Select only if cost sensitivity outweighs clamping performance and thermal margin requirements |
| TPD2E007DRYR | Low-capacitance (12 pF) dual-channel ESD array; 22V VRWM, 12A IPP; insufficient for IEC 61000-4-5 surge | Limited to ESD-only protection; cannot handle 40A lightning surges or 1kV combo-wave events | Use only for data-line ESD protection alongside TDS2211P - not a functional replacement for power-line surge suppression |
Compared with SMAJ22A and TPD2E007DRYR, the TDS2211P uniquely combines 40A surge capability, sub-28V clamping across temperature, and FET-based architecture - making it the only option among the three suitable for protecting 22V power rails against both ESD and industrial-level surges without derating.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and IoT device power rail protection requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/REACH compliance.
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, protection, and connectivity.
The TDS product line was engineered specifically for high-energy EOS protection in 12–36V systems where conventional TVS devices fail to maintain safe clamping margins under thermal or current stress - targeting USB-C, industrial power, and ruggedized IoT applications.
FAQ
What is the maximum continuous operating voltage for TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously withstand up to 22 V DC or RMS on its protected line without significant leakage or degradation. This matches nominal USB PD VBUS levels and aligns with industrial 24V rail tolerances. Exceeding 22 V risks premature triggering or accelerated aging. The TDS2211P is rated for this exact voltage - not higher.
How does TDS2211P 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 TDS2211P uses a triggered shunt FET to maintain nearly constant clamping - 27.5–28 V from 24A to 40A and across –40°C to +125°C. This eliminates thermal runaway risk and ensures predictable protection for 22V-rated ICs under real-world surge conditions.
Can TDS2211P be used for bidirectional signal line protection?
No - the TDS2211P is designed exclusively for unidirectional, high-energy power-line protection (e.g., VBUS, load switch inputs). Its internal architecture connects all IN pins together and all GND pins together, with no reverse-path capability. For bidirectional data lines like USB DP/DM or CC, low-capacitance ESD arrays such as RClamp3371ZC must be used instead of the TDS2211P.
What is the recommended PCB layout for optimal surge performance of TDS2211P?
Place the TDS2211P 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 relief on GND pads. Do not use a thermal pad - energy is dissipated in the FET channel, not the die attach. This layout minimizes inductance and ensures full 40A rating.
Is TDS2211P compliant with RoHS and halogen-free standards?
Yes - the TDS2211P is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free. Marking code "T22" and date code are laser-etched on the top surface. Tape-and-reel packaging contains 3,000 units per 7-inch reel - consistent with industry-standard automated assembly requirements.
PFF0 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):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 2.1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 30pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
PFF0 FAQ
1.How can I place an order for PFF0 through Aetrix?
Please submit a Request for Quotation (RFQ) for PFF0 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 PFF0 reliable?
The price and inventory of PFF0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PFF0 is usually 5 days.
3.What payment methods are accepted for PFF0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PFF0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PFF0?
PFF0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PFF0 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 PFF0?
For technical support, including PFF0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PFF0 requirements.
6.How does Aetrix verify that PFF0 is sourced from the original manufacturer or authorized distributors?
All PFF0 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 PFF0 meets industry standards.
7.What is the process for return or replacement of PFF0?
All PFF0 units undergo pre-shipment inspection (PSI). If there is an issue with PFF0, 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 PFF0 part is unused and in its original packaging.
Return procedure for PFF0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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