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Semtech Corporation 1N6103AUS
- Part No.:
- 1N6103AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6103AUS.pdf
- Description:
- TVS DIODE 5.7VWM 11.2VC
- Quantity:
- Payment:
- Shipping:
Inventory:3,806
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Product details
Overview
1N6103AUS 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 ultra-low 20mΩ dynamic resistance. It protects USB PD, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6103AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and direct alternatives for 22V bus protection design-in.
Technical Context
The 1N6103AUS 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-27.5–28V-from 24A to 40A and across –40°C to +125°C due to decreasing RDS(on) under surge.
It operates with reverse stand-off voltage (VRWM) of 22V, breakdown voltage (VBR) of 25–27.9V at 1mA, and junction capacitance of 175pF at 22V/1MHz. 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 |
|---|---|
| VRWM | 22V - Maximum continuous operating voltage before clamping initiates; matches USB PD 20V nominal + margin. |
| VC @ 40A | 27.5–28V - Clamping voltage during full-rated 40A surge (1.2/50μs + 8/20μs combo wave); stays flat across temp and current. |
| IPP | 40A - Peak pulse current rating per IEC 61000-4-5; supports industrial ±1kV surge (RS = 42Ω). |
| RDYN | 20mΩ - Low dynamic resistance ensures minimal voltage rise under surge; enables stable clamping vs. traditional TVS. |
| CJ | 175pF @ 22V/1MHz - Junction capacitance suitable for DC power rails and low-speed I/O; not for high-speed data lines. |
| ESD Rating | ±30kV contact & air - Meets IEC 61000-4-2 Level 4; eliminates need for cascaded ESD stages on protected bus. |
| TOP | –40°C to +125°C - Full industrial temperature range operation without derating of clamping or surge capability. |
Pinout & Package
1N6103AUS is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. The compact footprint saves board space versus discrete TVS + series resistor solutions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Three dedicated ground terminals - must all be connected to low-inductance ground plane via multiple vias for full 40A surge current path. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals - connect directly to protected line (e.g., USB PD VBus); all three required for rated performance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28V) across 24–40A and –40°C to +125°C - avoids thermal runaway and overvoltage failure of downstream ICs. |
| Ultra-low dynamic resistance | 20mΩ ensures minimal IR drop during surge - critical for protecting load switches and PD controllers with tight overvoltage thresholds. |
| Triple-terminal input & ground | Reduces effective trace inductance and distributes current - achieves full 40A rating without PCB layout compromises or external current-sharing components. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive fast transients in industrial motor drives and PLC interfaces. |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the 20V–22V VBus line in USB Type-C ports supporting Power Delivery up to 100W. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed at connector entry point to clamp lightning-induced surges and contact ESD before reaching PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature - prevents damage to 30V-rated PD controllers where traditional TVS would exceed 35V at 125°C. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways exposed to field surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET drain, preventing avalanche failure during 8/20μs surges. Use Value: 40A surge rating and 20mΩ RDYN ensure clamping stays below 30V - well under typical 36V absolute max ratings of industrial load switches. |
| Industrial Equipment Power Rails | Notebook/Tablet DC Input Protection |
|
Use Scenario: Securing 24V auxiliary power rails in programmable logic controllers (PLCs), HMI panels, and factory automation systems. IC Role / Device Role / Timing Role: Single-device solution for IEC 61000-4-5 ±1kV (RS = 42Ω) compliance on unregulated DC inputs subject to induced lightning surges. Use Value: Eliminates need for series impedance + TVS combination - reduces BOM count and PCB area while improving reliability over temperature. |
Use Scenario: Protecting the main DC input (e.g., 20V adapter rail) in thin-and-light notebooks and tablets where board space and thermal constraints are critical. IC Role / Device Role / Timing Role: Compact 1.6×1.6mm DFN suppressor mounted adjacent to barrel jack or USB-C port to intercept ESD and surge before power management ICs. Use Value: 175pF capacitance and no thermal pad requirement simplify layout - avoids thermal coupling issues common with larger TVS arrays in thermally dense zones. |
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; marked "T22" + date code. | Identical use cases: USB PD VBus, load switch input, 22V industrial rails. | Select TDS2211P when requiring Semtech's official production part number with full traceability and long-term availability assurance. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 22.9A; higher clamping, no temperature stability, 600pF CJ. | Suitable only for lower-energy, non-temperature-critical applications; cannot meet 40A or ±30kV ESD requirements. | Choose SMAJ22A only for cost-sensitive, non-industrial designs where clamping >35V and 22.9A limit are acceptable. |
Compared with TDS2211P and SMAJ22A, the 1N6103AUS delivers identical protection performance to TDS2211P but may differ in marking or reel packaging, while offering superior clamping stability, lower capacitance, and higher surge rating than SMAJ22A - making it optimal for high-reliability 22V bus protection.
Availability
1N6103AUS is available at Aetrix Electronics and suitable for USB Power Delivery interfaces, industrial load switch inputs, and 22V DC power rail protection requiring stable component supply across automotive-grade temperature ranges and multi-year production cycles.
Supply support for 1N6103AUS 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 1N6103AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where stable clamping, temperature resilience, and low dynamic resistance are mandatory.
FAQ
What is the maximum continuous operating voltage for the 1N6103AUS?
The 1N6103AUS has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously withstand up to 22V DC or RMS without clamping. This aligns with USB PD 20V nominal operation plus safety margin and is validated per IEC 61000-4-5 surge testing at ±1kV.
Does the 1N6103AUS require a thermal pad on the PCB?
No, the 1N6103AUS does not require a thermal pad. Its FET-based architecture dissipates surge energy differently than junction-limited TVS devices - energy is handled through conduction rather than junction heating. The datasheet explicitly states "no thermal pad is needed," and layout guidelines emphasize low-inductance grounding instead.
Can the 1N6103AUS be used on high-speed data lines like USB SuperSpeed or PCIe?
No, the 1N6103AUS is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on differential pairs operating above ~100Mbps. It is intended exclusively for DC power rails and low-speed control lines - high-speed protection requires sub-0.3pF devices like RClamp3371ZC.
How does the clamping voltage of the 1N6103AUS compare to standard TVS diodes at elevated temperature?
Unlike standard TVS diodes whose clamping voltage rises significantly with temperature, the 1N6103AUS maintains 27.5–28V clamping from –40°C to +125°C. At 125°C, a typical 22V TVS may clamp above 38V, risking damage to 30V-rated controllers - the 1N6103AUS avoids this failure mode entirely.
What is the recommended PCB layout for optimal surge performance of the 1N6103AUS?
Place the 1N6103AUS as close as possible to the connector entry point. Connect all three IN pins (4–6) with a single short, wide trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using ≥3 vias each. Avoid stubs or splits - layout directly impacts its ability to sustain 40A surge current.
1N6103AUS 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:
- -
1N6103AUS FAQ
1.How can I place an order for 1N6103AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6103AUS 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 1N6103AUS reliable?
The price and inventory of 1N6103AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6103AUS is usually 5 days.
3.What payment methods are accepted for 1N6103AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6103AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6103AUS?
1N6103AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6103AUS 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 1N6103AUS?
For technical support, including 1N6103AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6103AUS requirements.
6.How does Aetrix verify that 1N6103AUS is sourced from the original manufacturer or authorized distributors?
All 1N6103AUS 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 1N6103AUS meets industry standards.
7.What is the process for return or replacement of 1N6103AUS?
All 1N6103AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6103AUS, 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 1N6103AUS part is unused and in its original packaging.
Return procedure for 1N6103AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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