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Semtech Corporation 1N6105AUS
- Part No.:
- 1N6105AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6105AUS.pdf
- Description:
- TVS DIODE 5.7VWM 11.2VC
- Quantity:
- Payment:
- Shipping:
Inventory:2,375
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Product details
Overview
1N6105AUS from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6105AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection designs requiring low-voltage overshoot control under lightning and EFT stress.
Technical Context
The 1N6105AUS 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 1A–40A (8/20μs) due to decreasing RDS(on), not fixed dynamic resistance.
It operates over −40°C to +125°C with stable 27.5–28V clamping at 40A, 22V reverse stand-off, and 25–27.9V breakdown (It = 1mA). Its 175pF junction capacitance at 22V/1MHz and 130–600nA leakage support high-speed interface protection without signal integrity compromise.
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 degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD input stages. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - provides robust handling of human-body-model ESD in handheld and connector-facing applications. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; voltage rise per amp is <20mV, critical for maintaining tight voltage margins under high-current transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for USB PD VBus protection without affecting power delivery regulation loop stability. |
Pinout & Package
1N6105AUS is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. All six terminals must be connected for full 40A surge rating: pins 1–3 are ground return paths, pins 4–6 are parallel-connected input terminals to the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return - all three must be soldered to solid ground plane via multiple vias to sustain 40A surge current without thermal or voltage bounce. |
| 4, 5, 6 | IN | Parallel-connected protected line input - connects directly to VBus or power rail; shared trace routing required to ensure equal current sharing and avoid imbalance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across full 1–40A (8/20μs) range - eliminates design margin inflation needed with traditional TVS diodes. |
| Temperature-stable protection | Clamping remains 27.5–28V from −40°C to +125°C - enables reliable operation in automotive under-hood or industrial ambient conditions. |
| Low dynamic resistance | 20mΩ measured between 1A and 40A - reduces voltage overshoot during fast-rising surges (e.g., EFT bursts) better than silicon avalanche devices. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated surge exposure in metering, robotics, and PoE-powered edge devices. |
Applications
| USB Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBus line of a USB Type-C port supporting up to 20V/5A PD negotiation, exposed to ESD at connectors and lightning-induced surges on long cables. IC Role / Device Role / Timing Role: Transient diverting suppressor placed immediately after the Type-C receptacle, shunting surge energy to ground before it reaches the PD controller and buck-boost converter. Use Value: Maintains 27.5–28V clamping at 40A-well below the 30V absolute maximum rating of common PD controllers-without derating at high temperature. |
Use Scenario: Safeguarding the input of an industrial-grade load switch (e.g., HS2950P) powering remote sensors or actuators in smart meters or factory automation nodes. IC Role / Device Role / Timing Role: Primary front-end surge clamp on VIN rail, preventing gate oxide damage to the internal MOSFET during 1.2/50μs line surges or EFT coupling. Use Value: Limits clamping to ≤28V across −40°C to +125°C, ensuring the load switch's 30V max rating is never exceeded-even during extended high-temperature operation. |
| IoT Device Power Rail Protection | Notebook/Tablet VBus Line Protection |
|
Use Scenario: Securing the main 22V input rail of battery-backed IoT gateways deployed outdoors or in electrically noisy environments (e.g., HVAC control panels). IC Role / Device Role / Timing Role: Standalone EOS protector on the primary DC input, coordinated with upstream fuse and downstream LDOs to form a complete overvoltage survival chain. Use Value: Delivers 40A surge capability in 1.6mm² footprint-reducing board area by >50% versus discrete TVS + MOV solutions-while sustaining ±30kV ESD robustness. |
Use Scenario: Protecting the VBus line in ultraportable notebooks and tablets where USB-C serves as sole power input, subject to user-handling ESD and docking-station surge coupling. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) clamp placed adjacent to the USB-C connector to minimize PCB trace inductance and preserve PD communication integrity. Use Value: Enables compact layout with no thermal pad required-energy dissipated in the FET channel-not the junction-eliminating need for copper pour or heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, same DFN-6 package, identical marking code T22 - confirmed pin-to-pin and functional replacement per Semtech documentation. | No change in layout, BOM, or test plan required; validated for USB PD and load switch use cases. | Select TDS2211P when sourcing from authorized Semtech channels with full traceability and lifecycle support. |
| SMAJ22A | Standard unidirectional TVS diode; 22V standoff, 35.5V clamping at 14.3A (8/20μs); 10× higher dynamic resistance (~200mΩ); clamping rises with temperature and current. | Requires larger voltage margin (≥36V-rated downstream ICs); unsuitable for high-temp or high-IPP applications without significant derating. | Choose SMAJ22A only for cost-sensitive, low-surge-risk consumer accessories where clamping stability is non-critical. |
Compared with 1N6105AUS, TDS2211P offers identical performance and drop-in compatibility, while SMAJ22A demands 12V+ higher clamping headroom and cannot maintain protection integrity above 85°C or beyond 15A surge currents.
Availability
1N6105AUS is available at Aetrix Electronics and suitable for USB Power Delivery systems, industrial load switch inputs, and IoT device power rails requiring stable component supply, consistent surge performance, and long-term manufacturing continuity.
Supply support for 1N6105AUS 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 1N6105AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping, temperature resilience, and space-constrained layouts are critical.
FAQ
What is the maximum continuous operating voltage for the 1N6105AUS?
The 1N6105AUS has a reverse stand-off voltage (VRWM) of 22V, meaning it can safely block up to 22V DC or RMS voltage continuously without significant leakage or degradation. This makes it suitable for nominal 20V USB PD VBus lines and other 22V-rated power rails where sustained voltage exposure occurs.
How does the 1N6105AUS achieve stable clamping voltage across temperature and current?
The 1N6105AUS uses a surge-rated FET as its conduction element, activated by a precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise. This results in clamping voltage remaining tightly bounded between 27.5V and 28V from −40°C to +125°C and across 1A–40A (8/20μs), unlike conventional TVS diodes whose clamping rises linearly with current and temperature.
Can the 1N6105AUS be used for protecting high-speed data lines like USB SuperSpeed?
No-the 1N6105AUS is optimized for power rail and high-current I/O protection, with 175pF junction capacitance at 22V. For USB SuperSpeed (TX/RX), low-capacitance TVS devices such as RClamp3371ZC (<0.25pF) are required. The 1N6105AUS is intended for VBus, CC, SBU, or load switch input lines-not differential high-speed signals.
What is the recommended PCB layout for optimal surge performance of the 1N6105AUS?
Place the 1N6105AUS as close as possible to the protected connector. Connect all three GND pins (1–3) to a solid ground plane using ≥3 vias each, and route all three IN pins (4–6) via a single short, wide trace to the protected line. Avoid stubs or splits-uneven current sharing degrades 40A rating. No thermal pad is needed; energy dissipates in the FET channel.
Is the 1N6105AUS RoHS compliant and halogen free?
Yes-the 1N6105AUS 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 per Semtech's standard DFN-6 packaging specification.
1N6105AUS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.7V (Max)
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 44.6A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6105AUS FAQ
1.How can I place an order for 1N6105AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6105AUS 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 1N6105AUS reliable?
The price and inventory of 1N6105AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6105AUS is usually 5 days.
3.What payment methods are accepted for 1N6105AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6105AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6105AUS?
1N6105AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6105AUS 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 1N6105AUS?
For technical support, including 1N6105AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6105AUS requirements.
6.How does Aetrix verify that 1N6105AUS is sourced from the original manufacturer or authorized distributors?
All 1N6105AUS 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 1N6105AUS meets industry standards.
7.What is the process for return or replacement of 1N6105AUS?
All 1N6105AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6105AUS, 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 1N6105AUS part is unused and in its original packaging.
Return procedure for 1N6105AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6105AUS Tags
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