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Semtech Corporation 1N6105US
- Part No.:
- 1N6105US
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6105US.pdf
- Description:
- TVS DIODE 6.9VWM 14VC
- Quantity:
- Payment:
- Shipping:
Inventory:9,329
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Product details
Overview
1N6105US 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 24–40A, and 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6105US datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and real-world implementation details for EOS-critical bus protection.
Technical Context
The 1N6105US employs 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 the breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A and −40°C to +125°C due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and low 175pF junction capacitance at 22V/1MHz - enabling use on high-speed power rails without signal integrity degradation. Its 6-pin DFN package integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to minimize parasitic inductance and maximize surge current handling.
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 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream ICs (e.g., USB PD controllers) remain below damage thresholds during surges. |
| 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 Level 4 ESD immunity for handheld and interface connectors. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping curve and minimal voltage rise under increasing surge current. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough to avoid loading 20V power rails in USB PD and industrial load-switch applications. |
Pinout & Package
1N6105US is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six terminals. The compact footprint saves board space versus discrete TVS+series resistor solutions and supports high-density USB Type-C and IoT layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias for full 40A surge capability. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBus); all three required to distribute surge current and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 24–40A and −40°C to +125°C - eliminates derating uncertainty in thermal designs. |
| Surge-rated FET protection element | Replaces PN-junction TVS with active shunt switch, reducing energy dissipation in silicon junction and improving reliability under repeated surges. |
| Low dynamic resistance | 20mΩ enables <28V clamping even at 40A - critical for protecting 22V-rated load switches and USB PD controllers with tight overvoltage margins. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - sustains operation in electrically noisy industrial environments without false triggering. |
Applications
| USB Type-C VBus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V USB Power Delivery bus against lightning-induced surges and connector ESD events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between Type-C receptacle and upstream load switch or PD controller. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents overvoltage damage to sensitive PD controllers where traditional TVS would exceed 35V at 125°C. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) exposed to 40A surges in remote meters or robotics. IC Role / Device Role / Timing Role: Primary EOS shunt device absorbing surge energy before it reaches the load switch's internal FET. Use Value: Keeps clamping voltage below the load switch's absolute maximum drain-source voltage rating - avoids catastrophic failure during 1.2/50μs + 8/20μs combo-wave transients. |
| IoT Device Power Rail Protection | Notebook/Tablet 22V System Bus |
|
Use Scenario: Securing 22V auxiliary power rails in battery-powered IoT gateways subjected to ESD during field servicing. IC Role / Device Role / Timing Role: Single-device solution replacing TVS + series impedance for compact, low-parasitic protection. Use Value: Delivers ±30kV ESD robustness in 1.6×1.6mm footprint - enables ruggedized enclosure design without sacrificing PCB area. |
Use Scenario: Protecting main system bus in thin-and-light notebooks supporting USB PD charging up to 20V. IC Role / Device Role / Timing Role: High-energy clamping device located adjacent to Type-C port to minimize trace inductance. Use Value: 175pF capacitance avoids power rail resonance or noise coupling - preserves stability of multi-phase buck converters supplying CPU/GPU cores. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - direct manufacturer-recommended replacement for 1N6105US; shares marking code T22 and DFN-6 footprint. | Identical use cases: USB PD, load switch, industrial 22V bus protection. | Select TDS2211P when sourcing from Semtech's official distribution channel; identical performance and qualification status. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, higher 30V clamping, smaller 0.65×0.65mm DFN-2 package - optimized for CC/SBU lines, not power rails. | Intended for low-capacitance data-line protection (CC, SBU), not 22V power bus clamping. | Not suitable as functional substitute for 1N6105US - insufficient IPP and clamping margin for VBus-level protection. |
Compared with TDS2211P (identical spec) and uClamp2411ZA (lower IPP, higher clamping), the 1N6105US delivers validated 40A surge handling and stable 28V clamping essential for 22V power rail protection - making it the only viable option among the three for high-energy EOS scenarios.
Availability
1N6105US is available at Aetrix Electronics and suitable for USB PD implementations, industrial load switch inputs, and IoT 22V power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6105US 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 high-performance analog and mixed-signal ICs for power management, protection, and signal integrity.
The 1N6105US belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where stable clamping and temperature resilience are critical.
FAQ
What is the clamping voltage of the 1N6105US at 40A surge current?
The 1N6105US clamps at 27.6–28V under 40A peak pulse current (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω). This value is guaranteed across −40°C to +125°C and reflects its constant-clamp FET architecture - unlike TVS diodes whose clamping rises linearly with current.
Is the 1N6105US pin-compatible with standard TVS diodes in DFN packages?
No - the 1N6105US uses a unique 6-pin DFN configuration with three parallel input pins (4–6) and three ground pins (1–3), requiring dedicated PCB layout. Standard bi-directional TVS diodes typically use 2-pin SOD or 3-pin DFN packages and cannot replicate its low-inductance, high-current shunt path.
Can the 1N6105US protect USB Type-C superspeed data lines (TX/RX)?
No - the 1N6105US has 175pF junction capacitance, which is too high for SuperSpeed differential pairs (typically requiring <0.25pF). It is intended exclusively for VBus and power-line protection; RClamp3371ZC or similar ultra-low-capacitance TVS devices are specified for TX/RX lines.
Does the 1N6105US require external bias or control signals to operate?
No - the 1N6105US is a fully passive, self-triggering device. Its internal precision trigger circuit activates the shunt FET automatically when transient voltage exceeds the breakdown threshold; no enable pin, supply rail, or external timing components are needed.
What is the maximum operating temperature range for the 1N6105US?
The 1N6105US is rated for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage and dynamic resistance remain stable across this full range - a key differentiator from conventional TVS diodes, whose performance degrades significantly above 85°C.
1N6105US 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):
- 6.9V (Max)
- Voltage - Breakdown (Min):
- 8.19V
- Voltage - Clamping (Max) @ Ipp:
- 14V
- Current - Peak Pulse (10/1000µs):
- 35.7A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6105US FAQ
1.How can I place an order for 1N6105US through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6105US 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 1N6105US reliable?
The price and inventory of 1N6105US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6105US is usually 5 days.
3.What payment methods are accepted for 1N6105US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6105US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6105US?
1N6105US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6105US 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 1N6105US?
For technical support, including 1N6105US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6105US requirements.
6.How does Aetrix verify that 1N6105US is sourced from the original manufacturer or authorized distributors?
All 1N6105US 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 1N6105US meets industry standards.
7.What is the process for return or replacement of 1N6105US?
All 1N6105US units undergo pre-shipment inspection (PSI). If there is an issue with 1N6105US, 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 1N6105US part is unused and in its original packaging.
Return procedure for 1N6105US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6105US Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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