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Semtech Corporation 1N6115US
- Part No.:
- 1N6115US
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6115US.pdf
- Description:
- TVS DIODE 18.2VWM 34.8VC
- Quantity:
- Payment:
- Shipping:
Inventory:3,588
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Product details
Overview
1N6115US 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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the 1N6115US datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior vs. conventional TVS, and validated alternatives for 22V bus protection in high-reliability embedded systems.
Technical Context
The 1N6115US implements a surge-rated FET shunt architecture with precision trigger circuitry - unlike standard TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A IPP due to decreasing RDS(on), not fixed dynamic resistance. It operates over −40°C to +125°C with <20mΩ dynamic resistance and 175pF junction capacitance at 22V.
This architecture enables superior thermal stability: clamping voltage variation is <0.5V across −40°C to +125°C at 40A, while conventional 22V TVS devices exhibit >10V drift under identical conditions. The device protects unsymmetrical lines per IEC 61000-4-5 ±1kV (1.2/50μs, RS=42Ω) and withstands ±4kV EFT per IEC 61000-4-4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| 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 automotive and industrial ESD robustness requirements without derating. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping curve and minimal voltage overshoot during fast-rising transients. |
Pinout & Package
1N6115US is housed in a Pb-free, RoHS-compliant DFN-6 package (1.6mm × 1.6mm × 0.55mm) with exposed thermal pad not required - all six terminals are functional I/O or ground connections; no die attach pad or thermal slug.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current - all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input - tied together to form single high-current path; must connect directly to connector or protected bus with minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt clamping | Eliminates voltage rise with increasing IPP - clamping stays within 27.5–28V from 24A to 40A, unlike TVS diodes whose VC = VBR + IPP×RDYN. |
| Temperature-stable clamping | VC variation <0.5V over −40°C to +125°C at 40A - enables reliable protection in uncontrolled thermal environments (e.g., industrial enclosures). |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated surges up to 40A without parametric shift or failure. |
| Low-leakage protection | 600nA max reverse leakage at 22V - avoids loading 22V rails in battery-powered IoT or portable equipment. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed immediately after connector, clamping transients before reaching PD controller or e-fuse. Use Value: Maintains 27.5V clamping at full 40A surge - keeps PD controller (e.g., STUSB4500) safely below its 28V absolute max rating even at 125°C ambient. |
Use Scenario: Safeguarding input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation where 22V supply lines face repetitive surges. IC Role / Device Role / Timing Role: First-line transient diverter upstream of load switch FET gate driver and overvoltage protection circuitry. Use Value: Prevents internal FET avalanche by limiting VDS to ≤28V during ±1kV IEC 61000-4-5 events - avoids latch-up or permanent gate oxide damage. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary rails powering cellular modems, GNSS receivers, or sensor fusion units in outdoor-connected IoT gateways. IC Role / Device Role / Timing Role: Standalone EOS suppressor on isolated 22V backup or auxiliary power domain, decoupled from main system ground. Use Value: Delivers ±30kV ESD immunity without adding series impedance - preserves voltage regulation accuracy and avoids false brown-out detection. |
Use Scenario: Protecting 22V supercapacitor or LiFePO4 backup supplies in enterprise SSDs and NAS controllers against hot-plug transients and board-level ESD. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (600nA) protector on backup rail input, co-located with bulk capacitance. Use Value: Enables compact 1.6mm × 1.6mm footprint without compromising surge margin - critical for space-constrained M.2 and U.2 storage modules. |
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 silicon, identical electrical specs and package - direct manufacturer-recommended replacement with identical marking (T22 prefix) and reel packaging. | No change in PCB layout, thermal design, or protection performance - fully drop-in compatible. | Select when sourcing from Semtech-authorized channels with full traceability and lifecycle support. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, higher 33V clamping at 24A, and 12pF capacitance - optimized for CC/SBU lines, not power rails. | Not suitable for 22V VBus protection due to insufficient IPP and excessive clamping; limited to low-voltage, low-capacitance data lines. | Choose only for secondary protection on USB-C configuration channel or sideband use lines - never as primary 22V rail protector. |
Compared with TDS2211P and uClamp2411ZA, the 1N6115US provides identical high-current clamping performance and thermal stability as TDS2211P but may differ in date-code marking or tape-and-reel logistics; uClamp2411ZA serves a fundamentally different signal-line role and cannot substitute for 22V power rail protection.
Availability
1N6115US is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node 22V power rails requiring stable component supply, long-term obsolescence management, and guaranteed RoHS/WEEE compliance.
Supply support for 1N6115US 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, power management, and transient protection.
The 1N6115US belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail applications where flat clamping and temperature stability are mandatory.
FAQ
What is the clamping voltage of the 1N6115US at 40A peak pulse current?
The 1N6115US clamps at 27.5–28V under IEC 61000-4-5 combination waveform conditions (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A. This value is guaranteed across −40°C to +125°C and reflects the device's FET-based architecture, which maintains near-constant clamping independent of current magnitude - unlike TVS diodes whose clamping rises linearly with IPP.
Can the 1N6115US replace a standard 22V TVS diode in USB PD designs?
Yes, the 1N6115US is explicitly designed as a superior alternative to 22V TVS diodes in USB PD applications. Its 27.5–28V clamping at 40A ensures USB PD controllers (e.g., TUSB73x, STUSB4500) remain below their 28V absolute maximum rating, even at elevated temperatures where conventional TVS clamping can exceed 35V - eliminating need for over-spec'ed IPP ratings.
What is the recommended PCB layout for optimal surge performance of the 1N6115US?
Place the 1N6115US within 2mm of the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using ≥3 vias. Avoid thermal pads or solder mask openings - energy is dissipated in the silicon, not the package. This layout minimizes parasitic inductance and ensures full 40A capability.
Does the 1N6115US require external bias or control signals to operate?
No, the 1N6115US is a fully autonomous, passive protection device. It contains an integrated precision trigger circuit and surge-rated FET - no external power, enable pins, or configuration are needed. It activates automatically when transient voltage exceeds the internal breakdown threshold (~25V), turning on the shunt FET to divert current to ground.
Is the 1N6115US compliant with RoHS and halogen-free standards?
Yes, the 1N6115US is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and WEEE Directive 2012/19/EU. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin - confirmed in Semtech's official datasheet Rev 2.5 and supported by material declarations.
1N6115US 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):
- 18.2V (Max)
- Voltage - Breakdown (Min):
- 21.6V
- Voltage - Clamping (Max) @ Ipp:
- 34.8V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6115US FAQ
1.How can I place an order for 1N6115US through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6115US 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 1N6115US reliable?
The price and inventory of 1N6115US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6115US is usually 5 days.
3.What payment methods are accepted for 1N6115US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6115US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6115US?
1N6115US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6115US 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 1N6115US?
For technical support, including 1N6115US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6115US requirements.
6.How does Aetrix verify that 1N6115US is sourced from the original manufacturer or authorized distributors?
All 1N6115US 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 1N6115US meets industry standards.
7.What is the process for return or replacement of 1N6115US?
All 1N6115US units undergo pre-shipment inspection (PSI). If there is an issue with 1N6115US, 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 1N6115US part is unused and in its original packaging.
Return procedure for 1N6115US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6115US Tags
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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