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Semtech Corporation USC1306
- Part No.:
- USC1306
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
USC1306.pdf
- Description:
- DIODE GEN PURP 400V 5A AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,016
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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 protection, 40A (8/20μs) peak pulse current handling, and a stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD input protection.
For engineers reviewing the TDS2211P datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal and layout performance, 175pF junction capacitance at 22V, and compatibility with industrial-grade load switch input protection schemes requiring <30V clamping at 125°C.
Technical Context
The TDS2211P employs a precision-triggered, surge-rated MOSFET as its primary protection element - activated only during overvoltage transients - enabling near-constant clamping voltage independent of peak pulse current magnitude. Its dynamic resistance is specified at 20mΩ (8/20μs), significantly lower than conventional TVS diodes.
Unlike standard TVS devices whose clamping voltage rises linearly with IPP (VC = VBR + IPP × RDYN), the TDS2211P maintains clamping within 27.5–28V from 24A to 40A and across −40°C to +125°C, due to the FET's collapsing RDS(on) under surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage the device safely blocks without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave, RS = 2Ω) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge. |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS = 42Ω) on unsymmetrical lines. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements without derating. |
| Junction Capacitance | 175pF at VR = 22V, f = 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20mΩ (8/20μs, 1A–40A range) - enables flat clamping curve by minimizing IR drop increase under rising surge current. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm, RoHS-compliant, UL 94V-0 molding compound). Exposed thermal pad not required; all six terminals are functional and must be connected per layout guidelines for full 40A rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to minimize inductance and maximize current sharing. |
| 4, 5, 6 | IN | Protected line input - tied together to the 22V bus or power rail; parallel connection ensures uniform current distribution and thermal balancing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage remains ≤28V from 24A to 40A and −40°C to +125°C - eliminates design margin uncertainty vs. TVS diodes. |
| FET-based shunt protection | Surge energy diverted through low-RDS(on) MOSFET instead of PN-junction dissipation - improves reliability and lifetime under repeated surges. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports robust protection in industrial equipment and USB PD applications exposed to lightning-induced transients. |
| Low-leakage operation | 600nA max reverse leakage at 22V - prevents battery drain or bias shift in always-on IoT and metering systems. |
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, where controller ICs tolerate ≤28V absolute max. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp fast-rising ESD and surge before reaching PD controller and load switch. Use Value: Maintains 27.5–28V clamping across 40A and 125°C - avoids over-clamp failure common with TVS diodes whose VC rises to >38V at high temperature. |
Use Scenario: Securing input rails of industrial-grade load switches (e.g., HS2950P) used in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: Primary front-end surge protector that limits voltage stress on the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents permanent damage to load switch ICs during 1kV/42Ω surges by holding clamping below 28V - eliminating need for oversized external TVS or redundant protection stages. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
|
Use Scenario: Safeguarding 22V auxiliary power inputs in battery-backed smart sensors and edge nodes operating in electrically noisy environments. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main power entry, coordinated with low-capacitance TVS on data lines (e.g., RClamp3371ZC). Use Value: 600nA max leakage at 22V preserves battery life in always-on deployments; 175pF capacitance avoids interference with onboard DC-DC feedback loops. |
Use Scenario: Protecting 22V supply rails in NVMe SSD enclosures, enterprise HDD backplanes, and RAID controllers exposed to hot-plug transients. IC Role / Device Role / Timing Role: High-energy transient suppressor placed upstream of PMICs and voltage supervisors to prevent latch-up or reset corruption. Use Value: 40A surge rating meets IEC 61000-4-5 compliance for storage infrastructure; DFN-6 footprint saves board space versus discrete TVS+RC solutions. |
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 voltage rises to ~42V at 40A (8/20μs); higher dynamic resistance (~0.5Ω). | Limited to lower-temperature or lower-current scenarios; cannot maintain safe clamping for USB PD controllers at 125°C. | Select only if cost sensitivity outweighs clamping stability and thermal margin requirements. |
| SP1003-020 | Bi-directional TVS array; 20V working voltage; 25A (8/20μs) rating; clamping ~35V at 25A; 12pF typical capacitance. | Better for low-capacitance data-line protection but insufficient for 22V power rail surge handling; lower IPP and higher VC limit use cases. | Consider only for secondary protection or mixed-signal interfaces - not as primary 22V bus suppressor. |
Compared with SMAJ22A and SP1003-020, the TDS2211P uniquely delivers stable sub-28V clamping at full 40A and across industrial temperature range - making it the only option qualified for high-reliability 22V power rail protection in USB PD, load switch, and storage applications where voltage margin is critical.
Availability
TDS2211P is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V storage device power rails 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 semiconductor company specializing in analog and mixed-signal ICs for precision sensing, protection, and signal integrity applications.
The TDS family was developed to replace conventional TVS diodes in high-reliability power rail protection, delivering constant-voltage clamping via integrated FET architecture for USB, industrial, and automotive-grade systems.
FAQ
What is the maximum continuous operating voltage for TDS2211P?
The TDS2211P has a reverse stand-off voltage (VRWM) of 22V - meaning it reliably blocks up to 22V DC or RMS AC continuously without significant leakage or degradation. This makes it suitable for 20V USB PD VBUS lines and other 22V-rated power rails where sustained voltage stress must be managed without false triggering.
How does TDS2211P achieve stable clamping voltage across temperature?
The TDS2211P uses a precision-triggered shunt FET whose RDS(on) decreases under surge conditions, counteracting the temperature-dependent rise in trigger circuit breakdown voltage. As shown in the datasheet's clamping vs. temperature curves, TDS2211P holds 27.5–28V from −40°C to +125°C - unlike TVS diodes whose clamping can exceed 38V at 125°C.
Can TDS2211P replace a standard TVS diode in an existing 22V protection circuit?
Yes, but layout and grounding must be updated: all three GND pins (1–3) and all three IN pins (4–6) must be shorted together on PCB and connected with low-inductance paths. Unlike TVS diodes, TDS2211P requires symmetrical multi-pin routing to achieve rated 40A performance - direct drop-in replacement is not guaranteed without review of trace inductance and grounding strategy.
What is the junction capacitance of TDS2211P and how does it affect circuit design?
The TDS2211P exhibits 175pF junction capacitance at 22V and 1MHz. This value is appropriate for 22V power rail protection but too high for high-speed data lines (e.g., USB SS, PCIe). It must be placed only on power or low-frequency control lines - never in series with >10MHz signals - to avoid bandwidth reduction or signal distortion.
Does TDS2211P require a thermal pad or heatsink for 40A surge handling?
No. The TDS2211P dissipates surge energy primarily through conduction, not junction heating, and the DFN-6 package is rated for full 40A (8/20μs) without thermal pad. Per datasheet Figure 7, layout emphasis is on low-inductance GND vias and short straight traces - not thermal mass. Adding a thermal pad provides no benefit and may compromise surge current path symmetry.
USC1306 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):
- 400 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 20 µA @ 400 V
- Capacitance @ Vr, F:
- 90pF @ 10V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -55°C ~ 150°C
USC1306 FAQ
1.How can I place an order for USC1306 through Aetrix?
Please submit a Request for Quotation (RFQ) for USC1306 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 USC1306 reliable?
The price and inventory of USC1306 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USC1306 is usually 5 days.
3.What payment methods are accepted for USC1306?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USC1306 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USC1306?
USC1306 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USC1306 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 USC1306?
For technical support, including USC1306 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USC1306 requirements.
6.How does Aetrix verify that USC1306 is sourced from the original manufacturer or authorized distributors?
All USC1306 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 USC1306 meets industry standards.
7.What is the process for return or replacement of USC1306?
All USC1306 units undergo pre-shipment inspection (PSI). If there is an issue with USC1306, 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 USC1306 part is unused and in its original packaging.
Return procedure for USC1306:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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