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Semtech Corporation SM100F
- Part No.:
- SM100F
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
SM100F.pdf
- Description:
- DIODE GEN PURP 10KV 130MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,786
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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 temperature and current range - 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, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 22V EOS protection in space-constrained, thermally demanding designs.
Technical Context
The TDS2211P 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 - enabling near-constant clamping voltage independent of peak pulse current magnitude. Its dynamic resistance is 20mΩ (8/20μs), far lower than typical TVS diodes.
Unlike conventional TVS devices whose clamping voltage rises linearly with IPP (VC = VBR + IPP × RDYN), the TDS2211P maintains clamping at ~27.6V from 24A to 40A and across –40°C to +125°C due to decreasing RDS(on) under surge conditions - confirmed by measured clamping curves and thermal stability data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures downstream 24V-rated 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 for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness requirements without derating. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for <22V power rail and moderate-speed signal line protection without signal integrity impact. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Reverse Leakage | 130–600nA at 22V - negligible power loss and no system-level bias error in always-on protection configurations. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current - all three must be connected with low-inductance vias to maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input - tied together to distribute surge current across parallel bond wires and internal FET channels. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A surge range and –40°C to +125°C - eliminates thermal derating and simplifies worst-case margin analysis. |
| FET-based shunt architecture | Replaces junction-limited TVS with low-RDS(on) MOSFET - dissipates energy in channel rather than PN junction, enabling higher IPP and better thermal stability. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during sub-100ns ESD events and improves clamping fidelity versus TVS diodes (typically >1Ω). |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive burst noise in industrial motor drives and PLC I/O modules. |
| Space-efficient footprint | 1.6mm × 1.6mm DFN - saves >60% board area vs. comparable SO-8 or SOT-23 TVS solutions while maintaining 1120W peak power rating. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBUS lines in USB-C PD ports against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed between connector and PD controller or buck converter input. Use Value: Maintains 27.6V clamping at 40A and 125°C - prevents overvoltage damage to 24V-rated PD controllers where conventional TVS would exceed 38V at same conditions. |
Use Scenario: Shielding enable and input pins of industrial-grade load switches (e.g., HS2950P) from EOS in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient clamp upstream of integrated e-fuse to prevent gate oxide rupture and overvoltage latch-up. Use Value: Limits clamping to ≤28V across temperature - keeps stress below 80% of typical 35V FET breakdown, extending reliability in uncooled enclosures. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet 22V System Bus Protection |
Use Scenario: Securing 22V auxiliary rails in battery-powered IoT gateways exposed to ESD during field maintenance or docking. IC Role / Device Role / Timing Role: Standalone EOS suppressor on always-on system power input, before PMIC or LDO regulators. Use Value: Delivers ±30kV ESD immunity with only 175pF capacitance - avoids regulator instability or startup delay caused by high-capacitance TVS devices. |
Use Scenario: Protecting 22V system rails in ultrabooks and tablets against EOS from AC adapter transients and port insertion events. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary front-end fuse, ensuring fail-safe operation during adapter fault conditions. Use Value: 1120W peak power rating handles 1.2/50μs + 8/20μs combo waveforms - satisfies stringent OEM surge test plans without external crowbar circuits. |
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 ~42V at 40A (8/20μs); 1.5Ω dynamic resistance; 100pF capacitance. | Lower capacitance but significantly higher clamping voltage - unsuitable for 24V-rated ICs at elevated temperature or full surge current. | Select only if system voltage margin allows >40V transient excursion and thermal derating is acceptable. |
| TPD2E001DRYR | Low-capacitance (0.9pF) dual-channel ESD array; rated for 3.6V working voltage; ±15kV ESD; not rated for IEC 61000-4-5 surge. | Designed for high-speed data lines (USB 2.0, HDMI), not power rail protection - lacks 40A surge capability and 22V standoff. | Use only for DP/DM or CC lines in same USB-C design; never substitute for TDS2211P on VBUS. |
Compared with SMAJ22A and TPD2E001DRYR, the TDS2211P uniquely combines 22V working voltage, 40A surge rating, and thermally stable 28V clamping - making it the sole option for protecting 24V-rated ICs in industrial USB PD and load switch applications without thermal or voltage margin compromise.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant 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, protection, and signal integrity.
The TDS2211P belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection where stable clamping and thermal resilience are critical.
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 or RMS without significant leakage or conduction. This makes the TDS2211P suitable for protecting 20–22V nominal power rails such as USB-C PD VBUS, industrial 24V auxiliary supplies, and notebook system buses - provided transient excursions remain within its 28V clamping envelope.
How does the TDS2211P achieve constant clamping voltage across varying surge currents?
The TDS2211P achieves constant clamping via a surge-rated FET shunt architecture: a precision trigger circuit activates the FET when transient voltage exceeds breakdown, and the FET's RDS(on) decreases under high current, counteracting voltage rise. Measured data shows clamping remains 27.5–28V from 24A to 40A (8/20μs), unlike TVS diodes whose VC increases linearly with IPP - a key advantage confirmed in the TDS2211P datasheet Figure 3.
Can the TDS2211P replace a standard TVS diode in an existing 22V protection circuit?
Yes, the TDS2211P can directly replace many 22V TVS diodes - but only if the PCB layout accommodates its 6-pin DFN package and all GND (pins 1–3) and IN (pins 4–6) terminals are properly connected. Its superior thermal stability and flat clamping reduce design margin risk, though layout must minimize inductance: use short traces, multiple ground vias, and place the TDS2211P adjacent to the protected connector.
What is the junction capacitance of the TDS2211P, and how does it affect circuit performance?
The TDS2211P exhibits 175pF junction capacitance at 22V and 1MHz, measured per its datasheet. This value is appropriate for 22V power rail and moderate-speed signal line protection (e.g., load switch enable inputs), but too high for high-speed differential pairs like USB 3.x SuperSpeed lanes - where sub-0.5pF devices such as RClamp3371ZC are required alongside the TDS2211P in full USB-C protection schemes.
Does the TDS2211P require a thermal pad or heatsink for 40A surge handling?
No, the TDS2211P does not require a thermal pad or external heatsink. Its FET-based architecture dissipates surge energy in the channel rather than the junction, and the datasheet explicitly states "no thermal pad is needed." The device relies on low-inductance PCB grounding (via multiple vias to inner ground planes) and proximity to the protected connector - not thermal mass - to handle 40A (8/20μs) pulses reliably.
SM100F 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):
- 10000 V
- Current - Average Rectified (Io):
- 130mA
- Voltage - Forward (Vf) (Max) @ If:
- 10 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 2.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10000 V
- Capacitance @ Vr, F:
- 3.2pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
SM100F FAQ
1.How can I place an order for SM100F through Aetrix?
Please submit a Request for Quotation (RFQ) for SM100F 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 SM100F reliable?
The price and inventory of SM100F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM100F is usually 5 days.
3.What payment methods are accepted for SM100F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM100F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM100F?
SM100F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM100F 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 SM100F?
For technical support, including SM100F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM100F requirements.
6.How does Aetrix verify that SM100F is sourced from the original manufacturer or authorized distributors?
All SM100F 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 SM100F meets industry standards.
7.What is the process for return or replacement of SM100F?
All SM100F units undergo pre-shipment inspection (PSI). If there is an issue with SM100F, 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 SM100F part is unused and in its original packaging.
Return procedure for SM100F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM100F Tags
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Micro Commercial Co
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1N4148WX-TP
Micro Commercial Co
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BAV21W-7-F
Diodes Incorporated
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