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Semtech Corporation F15
- Part No.:
- F15
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
F15.pdf
- Description:
- DIODE GEN PURP 1.5KV 350MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,202
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Product details
Overview
TDS2211P from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping across full current and temperature range (−40°C to +125°C); it is deployed in USB Type-C PD bus protection and industrial load switch input stages.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge, low dynamic resistance (<20 mΩ), junction capacitance (175 pF @ 22V), DFN 1.6×1.6mm package constraints, and compatibility with 22V working voltage systems requiring robust EOS resilience.
Technical Context
The TDS2211P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and drives the shunt FET into low-RDS(on) conduction-enabling near-constant clamping voltage independent of peak pulse current magnitude. Its architecture eliminates the linear VC = VBR + IPP × RDYN dependency seen in conventional TVS diodes.
Clamping remains stable from −40°C to +125°C due to temperature-invariant trigger threshold and FET conduction behavior; electrical characteristics are specified at 25°C with guaranteed performance across operating temperature, including reverse stand-off voltage (22V), breakdown voltage (25–27.9V), and dynamic resistance (20 mΩ, measured 1–40A, 8/20μs).
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 @ 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage thresholds during surge. |
| Peak Pulse Current | 40 A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 industrial surge immunity testing. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds standard system-level ESD requirements for consumer and industrial interfaces. |
| Dynamic Resistance | 20 mΩ - enables low-voltage drop during high-current transients, minimizing energy dissipation in the device and thermal stress. |
| Junction Capacitance | 175 pF @ 22 V, 1 MHz - impacts signal integrity on moderate-speed buses (e.g., USB 2.0, SMBus); suitable for non-high-speed data lines. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, marked "T22" + date code.
| 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 | Input terminal for protected line (e.g., VBus or power rail); all three pins are internally tied and must be shorted externally for full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V across 24–40A surge range and −40°C to +125°C - eliminates derating uncertainty in thermal design. |
| FET-based shunt protection | Replaces junction-limited TVS with low-RDS(on) MOSFET switching - reduces thermal stress and improves reliability under repeated surges. |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) - sustains multi-kA-level induced transients common in industrial and automotive power domains. |
| Low-leakage operation | ≤600 nA reverse leakage @ 22 V - prevents battery drain or bias shift in always-on IoT and portable equipment. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V USB PD VBus lines against lightning-induced surges and connector ESD during hot-plug events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between Type-C receptacle and PD controller or load switch input. Use Value: Maintains clamping at ≤28 V across temperature and current extremes, preventing damage to sensitive 24V-tolerant PD controllers (e.g., STUSB4500, CYPD3177). |
Use Scenario: Shielding e-fuse or load switch inputs (e.g., HS2950P, TPS25942) in remote meters and robotics from 1 kV/42 Ω line surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary front-end EOS protector upstream of integrated load switches to prevent gate oxide failure and overvoltage latch-up. Use Value: Limits clamping to 28 V - below typical 30V absolute maximum ratings of internal FETs - enabling reliable operation without external crowbar circuits. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC-DC Input Protection |
|
Use Scenario: Securing 12–24V DC input rails of battery-powered IoT gateways exposed to field wiring transients and ESD. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main power entry before buck converter or PMIC input. Use Value: 40A surge capability and −40°C to +125°C operation ensure protection integrity in uncontrolled ambient environments (e.g., smart agriculture sensors). |
Use Scenario: Safeguarding 19–20V adapter-input rails in ultrabooks and tablets against AC-line coupled surges and accidental 24V adapter misconnection. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary AC/DC adapter, acting as last-line defense before system PMIC. Use Value: Low 175 pF capacitance avoids interference with adapter feedback loop stability while delivering 22V working margin above nominal 19.5V input. |
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; clamping rises to ~42 V @ 40A (8/20μs); higher dynamic resistance (~0.5 Ω); no temperature-stable clamping. | Used where cost is prioritized over clamping precision; requires thermal derating above 85°C; unsuitable for tight-margin 24V systems. | Select SMAJ22A only if board space allows larger SMC package and clamping >35 V is acceptable for protected ICs. |
| SP1003-220K | Bi-directional TVS array; 22 V standoff; clamps at ~36 V @ 40A; 25 pF typical capacitance; rated for 30A (8/20μs), not 40A. | Preferred for differential or bidirectional signal lines (e.g., RS-485); lower capacitance suits faster interfaces but lacks TDS2211P's current rating and flat clamping. | Choose SP1003-220K when protecting low-capacitance data paths alongside power rails - not as a direct replacement for TDS2211P's high-current unidirectional role. |
Compared with SMAJ22A and SP1003-220K, the TDS2211P delivers uniquely stable 28 V clamping across full surge current and temperature range using FET-shunt architecture-making it the only option qualified for 40A/22V industrial and USB PD applications demanding predictable, derating-free protection.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
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 signal integrity.
The TDS product line delivers transient protection using active FET-shunt architecture instead of passive junction devices-targeting high-reliability 22–36V industrial, computing, and USB power delivery applications where clamping stability is critical.
FAQ
What is the maximum continuous operating voltage for the TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously block up to 22 V DC or RMS without significant leakage. This makes it suitable for 20 V USB PD VBus and 24 V industrial power rails where sustained voltage margins are required. Exceeding 22 V risks premature conduction and accelerated wear.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P uses a precision trigger circuit to activate a low-RDS(on) shunt FET during overvoltage events. As surge current increases, the FET's on-resistance decreases, maintaining clamping voltage near the trigger threshold (~27.5–28 V). This contrasts with TVS diodes whose clamping rises linearly with current due to fixed dynamic resistance.
Can the TDS2211P replace a standard TVS diode in an existing 22V design without layout changes?
No - the TDS2211P requires all three IN pins (4,5,6) and all three GND pins (1,2,3) to be shorted together on PCB to achieve full 40A rating and optimal thermal/surge performance. Unlike two-terminal TVS devices, its 6-pin DFN demands dedicated routing for parallel pin connections and low-inductance grounding via multiple vias.
What is the junction capacitance of the TDS2211P, and how does it affect signal integrity?
The TDS2211P exhibits 175 pF junction capacitance at 22 V and 1 MHz. This value is appropriate for protecting power rails and low-to-moderate speed control lines (e.g., SMBus, I²C, enable signals), but not recommended for high-speed differential pairs like USB 3.x or PCIe where sub-0.5 pF is required. For those, companion low-CJ devices (e.g., RClamp3371ZC) are used.
Is the 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 lead finish is lead-free. Marking code "T22" and date code are laser-etched on the top surface, consistent with Semtech's green manufacturing specifications.
F15 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):
- 1500 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
F15 FAQ
1.How can I place an order for F15 through Aetrix?
Please submit a Request for Quotation (RFQ) for F15 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 F15 reliable?
The price and inventory of F15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for F15 is usually 5 days.
3.What payment methods are accepted for F15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for F15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for F15?
F15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your F15 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 F15?
For technical support, including F15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your F15 requirements.
6.How does Aetrix verify that F15 is sourced from the original manufacturer or authorized distributors?
All F15 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 F15 meets industry standards.
7.What is the process for return or replacement of F15?
All F15 units undergo pre-shipment inspection (PSI). If there is an issue with F15, 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 F15 part is unused and in its original packaging.
Return procedure for F15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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