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Semtech Corporation 1N6120AUS
- Part No.:
- 1N6120AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6120AUS.pdf
- Description:
- TVS DIODE 29.7VWM 53.6VC
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
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Product details
Overview
1N6120AUS 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, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6120AUS 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 design-in.
Technical Context
The 1N6120AUS uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A peak pulse currents due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with stable 27.5–28V clamping up to 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), and maintains <600nA reverse leakage at 22V across temperature - enabling reliable protection in thermally demanding environments without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 22 V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage (VC) | 27.5–28 V at 40A - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below damage threshold during surge. |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD applications. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external shielding. |
| Dynamic Resistance (RDYN) | 20 mΩ - enables low-voltage-drop shunting, minimizing energy dissipation in the device and reducing thermal stress. |
| Junction Capacitance (CJ) | 175 pF at 22V, 1MHz - suitable for DC power rails and low-speed signal lines; not intended for >100MHz data paths. |
Pinout & Package
1N6120AUS is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with UL 94V-0 molding compound. All six terminals must be soldered for full 40A surge rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to a low-inductance ground plane via multiple vias. |
| Pins 4, 5, 6 | IN | Protected input node - connects directly to VBus or power rail; all three pins must be tied together with minimal trace length to connector. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V across 24–40A surge range - eliminates need for over-spec'ing IPP to meet VC limits. |
| Temperature-stable protection | VC remains 27.5–28 V from −40°C to +125°C - removes thermal derating calculations required for standard TVS diodes. |
| Low dynamic resistance | 20 mΩ enables efficient shunting with <1.1 W instantaneous power dissipation at 40A - reduces localized heating and PCB thermal stress. |
| High-energy ESD robustness | ±30 kV contact discharge withstand - supports unshielded USB Type-C connectors and industrial HMI interfaces without additional guard rings. |
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: Transient diverting suppressor placed between connector and PD controller or buck converter input. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in 24V-rated PD controllers (e.g., STUSB4500, CYPD3177). |
Use Scenario: Safeguarding enable and input pins of high-side load switches (e.g., HS2950P, TPS22990) in remote meters and robotics. IC Role / Device Role / Timing Role: Primary front-end surge clamp upstream of load switch FET to limit VDS stress during EOS events. Use Value: Clamps below 28V while handling 40A transients - keeps internal FET within safe SOA and avoids overvoltage shutdown or destruction. |
| IoT Device DC Power Rail Protection | Notebook/Tablet Main Power Input Protection |
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS + MOV networks for compact, high-reliability designs. Use Value: 175 pF capacitance and 600 nA leakage at 22V allow use without affecting power sequencing or standby current budgets. |
Use Scenario: Protecting main system power input (e.g., barrel jack or USB-C port) in thin-client notebooks and 2-in-1 tablets. IC Role / Device Role / Timing Role: First-line defense against user-handling ESD and AC-line coupled surges before PMIC input stage. Use Value: DFN-6 footprint (1.6×1.6 mm) saves >60% board area vs. SOD-123 TVS solutions - critical for ultra-thin form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical functional specification, same DFN-6 package, identical pinout and marking code (T22). Manufactured by Semtech as direct variant. | Same USB PD, load switch, and industrial power rail use cases; validated in Semtech reference designs (e.g., Figure 4 & 5). | Select when requiring Semtech's documented layout guidelines, thermal performance curves, and application notes specific to TDS architecture. |
| SM712-02HTG | Standard bipolar TVS array (SOT-23); 12V working voltage, 200W peak power, higher VC (~23V @ 10A), no constant-clamp behavior. | Limited to lower-voltage rails (<15V); unsuitable for 22V USB PD or industrial 24V systems due to VBR and clamping mismatch. | Consider only for cost-sensitive, non-PD, sub-15V applications where 27V clamping margin is unavailable and thermal stability is secondary. |
Compared with TDS2211P, 1N6120AUS offers identical performance and compatibility; compared with SM712-02HTG, it provides 22V operation, 40A surge rating, and temperature-invariant clamping - making it the sole viable option for robust 20–22V bus protection.
Availability
1N6120AUS is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and IoT device power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6120AUS 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 1N6120AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 20–30V power rail protection where stable clamping and temperature resilience are critical.
FAQ
What is the maximum continuous operating voltage for the 1N6120AUS?
The 1N6120AUS has a reverse stand-off voltage (VRWM) of 22 V, meaning it can continuously block up to 22 V DC without significant leakage or conduction. This makes it suitable for nominal 20V USB PD VBus and 24V industrial power rails where transient protection is needed without interfering with normal operation.
How does the 1N6120AUS differ from a standard TVS diode in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), the 1N6120AUS uses a triggered FET architecture that maintains near-constant clamping - 27.5–28 V across 24–40A - due to decreasing RDS(on) under surge. This eliminates overdesign to meet VC targets.
Can the 1N6120AUS be used to protect high-speed data lines like USB SuperSpeed or PCIe?
No - the 1N6120AUS has 175 pF junction capacitance at 22V, which would severely degrade signal integrity on high-speed differential pairs. It is intended exclusively for DC power rails and low-speed control lines. For USB SS or DP/DM lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF).
What is the recommended PCB layout for optimal surge performance of the 1N6120AUS?
Place the 1N6120AUS as close as possible to the protected connector. Connect all three IN pins (4,5,6) with a single short, wide trace to the line; tie all three GND pins (1,2,3) directly to a solid ground plane using ≥3 vias. Avoid thermal relief on GND pads and minimize trace inductance - parasitic inductance degrades clamping response during fast ESD events.
Is the 1N6120AUS RoHS-compliant and halogen-free?
Yes - the 1N6120AUS is Pb-free, halogen-free, and compliant with RoHS and WEEE directives. Its DFN-6 package uses UL 94V-0 rated molding compound and lead-free terminal finish, meeting environmental requirements for industrial, computing, and consumer electronics.
1N6120AUS 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):
- 29.7V (Max)
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.6V
- Current - Peak Pulse (10/1000µs):
- 9.3A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6120AUS FAQ
1.How can I place an order for 1N6120AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6120AUS 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 1N6120AUS reliable?
The price and inventory of 1N6120AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6120AUS is usually 5 days.
3.What payment methods are accepted for 1N6120AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6120AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6120AUS?
1N6120AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6120AUS 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 1N6120AUS?
For technical support, including 1N6120AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6120AUS requirements.
6.How does Aetrix verify that 1N6120AUS is sourced from the original manufacturer or authorized distributors?
All 1N6120AUS 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 1N6120AUS meets industry standards.
7.What is the process for return or replacement of 1N6120AUS?
All 1N6120AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6120AUS, 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 1N6120AUS part is unused and in its original packaging.
Return procedure for 1N6120AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6120AUS Tags
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