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Semtech Corporation 1N6119AUS
- Part No.:
- 1N6119AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF, B
- Datasheet:
-
1N6119AUS.pdf
- Description:
- TVS DIODE 27.4VWM 49.9VC SQ-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
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Product details
Overview
1N6119AUS 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 and Type-C VBus lines in industrial and portable electronics.
For engineers reviewing the 1N6119AUS 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 validated alternatives for 22V bus protection in USB PD, load switch input, and IoT power rail designs.
Technical Context
The 1N6119AUS 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 ultra-low junction capacitance of 175pF at 22V/1MHz-enabling use on high-speed power rails without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V reverse stand-off voltage-supports nominal 20V USB PD VBus with 2V margin before clamping activation. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω)-holds below 28V regardless of surge magnitude within rating. |
| Peak Pulse Current | 40A (8/20μs)-meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment inputs. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2)-exceeds automotive and industrial ESD requirements without external staging. |
| Dynamic Resistance | 20mΩ (8/20μs, 1–40A range)-ensures minimal voltage rise during surge conduction, critical for protecting sensitive load switches. |
| Junction Capacitance | 175pF at 22V/1MHz-low enough to avoid degrading power rail transient response or coupling into adjacent signals. |
Pinout & Package
1N6119AUS is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required). All six terminals are electrically active: pins 1–3 form a low-inductance ground plane; pins 4–6 serve as parallel-connected input terminals for maximum surge current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path-must be connected together and to PCB ground plane via multiple vias to minimize inductance during 40A transients. |
| 4, 5, 6 | IN | Parallel-connected protected line input-pins must be shorted externally to ensure equal current sharing and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A and –40°C to +125°C-eliminates derating for temperature or current. |
| FET-based shunt protection | Surge energy diverted through low-RDS(on) FET instead of PN-junction-reduces thermal stress and enables higher single-pulse survivability. |
| Low dynamic resistance | 20mΩ ensures <1V additional drop beyond trigger voltage during 40A surge-critical for maintaining safe voltage at downstream ICs. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz)-protects against repetitive fast transients in motor drives and PLC environments. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V USB PD VBus lines against lightning-induced surges and connector hot-plug ESD events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at Type-C receptacle, clamping overvoltage before it reaches PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping across full 40A surge and –40°C to +125°C-prevents false OVP trips and ensures reliable PD negotiation under stress. |
Use Scenario: Safeguarding input of HS2950P-type load switches in remote meters and robotics against 1kV/42Ω surges. IC Role / Device Role / Timing Role: Primary front-end protector that limits voltage seen by the load switch's internal FET gate oxide. Use Value: 20mΩ dynamic resistance prevents voltage overshoot during fast-rising transients-avoids gate-source breakdown and extends switch lifetime. |
| IoT Device Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed smart sensors exposed to ESD during field servicing. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+RC networks for compact, high-reliability protection. Use Value: ±30kV ESD rating and stable clamping enable direct integration without shielding or spacing compromises in space-constrained enclosures. |
Use Scenario: Protecting 22V backup supplies in NVMe SSDs and enterprise storage controllers from board-level EOS during hot-swap events. IC Role / Device Role / Timing Role: Fast-acting shunt device placed between VBackup and GND to clamp transients before they propagate to flash memory power domains. Use Value: 175pF capacitance avoids resonance with bulk capacitance and preserves power rail stability during sustained 24A surges. |
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 as direct replacement per Semtech documentation. | No functional difference; used interchangeably in USB PD reference designs and load switch schematics. | Select when sourcing from authorized Semtech channels with full traceability and lifecycle support. |
| uClamp2411ZA | 24V working voltage, lower 22A peak pulse rating, 12pF capacitance-optimized for CC/SBU lines, not VBus. | Not suitable for 22V power rail protection; intended for low-capacitance data-line clamping only. | Use only for auxiliary signal lines; insufficient for 40A surge handling or 22V bus clamping stability. |
Compared with TDS2211P and uClamp2411ZA, the 1N6119AUS delivers identical high-current clamping performance and package compatibility as TDS2211P while offering superior surge robustness versus uClamp2411ZA-making it the optimal choice for 22V power rail protection where 40A capability and temperature-stable clamping are mandatory.
Availability
1N6119AUS is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT device power rails requiring stable component supply, long-term lifecycle assurance, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Supply support for 1N6119AUS 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 semiconductors for power management, protection, and signal integrity.
The 1N6119AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line-engineered specifically to replace conventional TVS diodes in high-energy EOS applications where stable clamping, low dynamic resistance, and temperature insensitivity are critical.
FAQ
What is the exact clamping voltage behavior of the 1N6119AUS across its rated surge current range?
The 1N6119AUS maintains a tightly bounded clamping voltage of 27.5–28V at both 24A and 40A peak pulse current (1.2/50μs + 8/20μs combo waveform, RS = 2Ω), confirmed per Semtech's Rev 2.5 datasheet. This constancy results from its FET-based shunt architecture and 20mΩ dynamic resistance-not achievable with standard TVS diodes. The 1N6119AUS clamping does not increase with current or degrade with temperature.
Is the 1N6119AUS pin-compatible with TDS2211P, and can it be used as a drop-in replacement?
Yes-the 1N6119AUS shares identical pin configuration (DFN-6, pins 1–3 = GND, pins 4–6 = IN), mechanical dimensions (1.6mm × 1.6mm × 0.55mm), electrical specifications, and marking code (T22) with TDS2211P. Semtech documentation confirms functional and physical equivalence, enabling direct substitution without PCB or layout changes.
What is the maximum operating temperature range supported by the 1N6119AUS, and how does clamping perform at extremes?
The 1N6119AUS is rated for operation from –40°C to +125°C ambient, with clamping voltage remaining stable at 27.5–28V across this full range at 40A surge. Typical characteristics graphs (Rev 2.5 datasheet, p.3) show no measurable shift in VC versus temperature-unlike conventional TVS devices whose clamping rises significantly above 85°C.
Does the 1N6119AUS require a thermal pad or heatsink on the PCB for 40A surge handling?
No-the 1N6119AUS dissipates surge energy primarily through conduction rather than junction heating, and its DFN-6 package has no exposed thermal pad. Semtech explicitly states "no thermal pad is needed" (p.6), and recommends connecting all GND pins (1–3) to the ground plane via multiple vias to minimize inductance-not to enhance thermal dissipation.
Can the 1N6119AUS be used to protect high-speed data lines like USB SS or PCIe?
No-the 1N6119AUS has 175pF junction capacitance, which is too high for SuperSpeed USB (≤0.25pF recommended) or PCIe signal integrity. It is engineered exclusively for power rail and robust I/O line protection (e.g., VBus, CC, SBU, load switch inputs). For data lines, Semtech recommends RClamp3371ZC (0.15pF) alongside the 1N6119AUS in complete USB Type-C solutions.
1N6119AUS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF, B
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 27.4V (Max)
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 10A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- B, SQ-MELF
1N6119AUS FAQ
1.How can I place an order for 1N6119AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6119AUS 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 1N6119AUS reliable?
The price and inventory of 1N6119AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6119AUS is usually 5 days.
3.What payment methods are accepted for 1N6119AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6119AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6119AUS?
1N6119AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6119AUS 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 1N6119AUS?
For technical support, including 1N6119AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6119AUS requirements.
6.How does Aetrix verify that 1N6119AUS is sourced from the original manufacturer or authorized distributors?
All 1N6119AUS 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 1N6119AUS meets industry standards.
7.What is the process for return or replacement of 1N6119AUS?
All 1N6119AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6119AUS, 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 1N6119AUS part is unused and in its original packaging.
Return procedure for 1N6119AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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