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Semtech Corporation 1N6115AUS
- Part No.:
- 1N6115AUS
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
1N6115AUS.pdf
- Description:
- TVS DIODE 18.2VWM 33.3VC
- Quantity:
- Payment:
- Shipping:
Inventory:2,929
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Product details
Overview
1N6115AUS 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 1N6115AUS datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and direct alternatives for EOS-critical designs requiring constant-voltage suppression.
Technical Context
The 1N6115AUS 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 a 22V reverse stand-off voltage (VRWM), 25–27.9V breakdown (VBR at 1mA), and only 130–600nA leakage at VRWM. Its 175pF junction capacitance at 22V/1MHz and 1120W peak pulse power rating support high-speed, high-reliability bus protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22V - Maximum continuous operating voltage before clamping activation; matches USB PD 20V nominal + margin. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - Stable suppression level ensures downstream ICs (e.g., load switches, PD controllers) remain below damage thresholds. |
| Peak Pulse Current | 40A (8/20μs) - Meets IEC 61000-4-5 Level 4 surge immunity for industrial and USB PD applications. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - Eliminates need for cascaded ESD stages in connector-facing protection schemes. |
| Dynamic Resistance | 20mΩ - Enables flat clamping curve; reduces voltage overshoot during fast-rising transients compared to TVS diodes. |
| Junction Capacitance | 175pF at 22V/1MHz - Low enough for VBus line protection without degrading power delivery signaling integrity. |
Pinout & Package
1N6115AUS is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. All six terminals are surface-mount; no thermal pad required as energy is dissipated in the active FET structure.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected via multiple vias to internal ground plane for full 40A surge handling. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBus); parallel connection ensures uniform current sharing and minimizes trace inductance impact on clamping response. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. current | 27.5–28V across full 24–40A range - avoids overvoltage stress on protected ICs during worst-case surges. |
| Temperature-stable clamping | No increase in VC from –40°C to +125°C - enables reliable protection in uncontrolled thermal environments (e.g., industrial enclosures). |
| Ultra-low dynamic resistance | 20mΩ - limits I×R drop during surge, enabling tighter voltage control than TVS diodes with fixed RDYN. |
| High-energy EOS capability | 1120W peak pulse power - supports repeated surge events per IEC 61000-4-5 without degradation. |
Applications
| USB Type-C 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 suppressor placed directly at the connector, diverting lightning-induced surges and contact ESD before reaching the PD controller or DC-DC converter. Use Value: Maintains 27.5–28V clamping at 40A and across temperature-prevents latch-up or gate oxide damage in PD controllers rated for ≤30V absolute maximum. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes exposed to field surges. IC Role / Device Role / Timing Role: Front-end transient shunt that clamps input overvoltage before it stresses the load switch's internal MOSFET drain-source junction. Use Value: Keeps clamping voltage below the 30–35V breakdown limit of typical load switch FETs, eliminating need for derating or oversized devices. |
| IoT Device Power Rail Protection | Notebook/Tablet Main Power Input Protection |
Use Scenario: Securing 22V-rated auxiliary power rails in battery-powered IoT gateways subjected to ESD during handling and 1kV line surges in building automation systems. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks, reducing BOM count and PCB area in space-constrained modules. Use Value: 1.6mm × 1.6mm footprint saves >60% board space versus SOD-123 TVS alternatives while delivering superior clamping consistency. |
Use Scenario: Protecting the main 20V input rail of ultrabooks and tablets where compactness, thermal reliability, and ESD robustness are critical. IC Role / Device Role / Timing Role: High-fidelity transient suppressor co-located with the power connector, minimizing trace inductance to preserve nanosecond-level response. Use Value: 175pF capacitance avoids interference with power sequencing signals and enables compliance with USB-IF VBus ripple and transient specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Standard unidirectional TVS diode; 35.1V clamping at 24.7A (8/20μs); higher dynamic resistance (~0.5Ω); VBR = 24.4–26.9V. | Larger 4.5mm × 2.7mm SMA package; higher clamping voltage increases risk of downstream IC damage at elevated temperatures. | Choose SMAJ22A only if cost is primary constraint and system can tolerate 35V+ clamping with thermal derating. |
| TPD2E001DRYR | Low-capacitance (12pF) dual-channel TVS for data lines; 22V VRWM; 30V clamping at 1A; not rated for 40A surges. | Designed for USB 2.0/DP/DM lines-not suitable for VBus or power rail protection due to low IPP and power rating. | Use TPD2E001DRYR only for signal-line ESD protection; pair with 1N6115AUS for complete USB Type-C solution (power + data). |
Compared with SMAJ22A and TPD2E001DRYR, the 1N6115AUS delivers uniquely stable 27.5–28V clamping across 40A and –40°C to +125°C-making it the only option among the three qualified for high-energy, thermally demanding power rail protection without design compromises.
Availability
1N6115AUS is available at Aetrix Electronics and suitable for USB Type-C Power Delivery systems, industrial load switch interfaces, and IoT device power rail protection requiring stable component supply, long-term lifecycle assurance, and consistent surge performance across temperature extremes.
Supply support for 1N6115AUS 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 1N6115AUS belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability power rail protection where constant clamping voltage and temperature stability are mandatory.
FAQ
What is the clamping voltage behavior of the 1N6115AUS under varying surge currents?
The 1N6115AUS maintains a tightly regulated clamping voltage of 27.5–28V across its full rated peak pulse current range (24A to 40A, 8/20μs waveform). This stability results from its FET-based architecture, where RDS(on) decreases under surge-unlike TVS diodes whose clamping rises linearly with current. The 1N6115AUS datasheet confirms this flat response in Figure 3 and Table 2.
Can the 1N6115AUS replace a standard TVS diode in a 22V USB PD design without layout changes?
Yes-the 1N6115AUS uses the same 1.6mm × 1.6mm DFN-6 footprint as many compact TVS devices, but requires all six pins to be connected: Pins 1–3 to solid ground plane (via multiple vias), and Pins 4–6 to the protected VBus trace. Layout must minimize trace length to the connector, as specified in Figure 7 of the 1N6115AUS datasheet.
How does the 1N6115AUS perform at elevated temperatures like +125°C?
The 1N6115AUS exhibits no measurable increase in clamping voltage from –40°C to +125°C, maintaining 27.5–28V at 40A per Figure 3 and Table 2. This contrasts sharply with standard TVS diodes, whose clamping rises significantly with temperature. The 1N6115AUS junction temperature rating extends to +150°C, supporting operation in sealed industrial enclosures.
Is the 1N6115AUS suitable for protecting both AC-coupled and DC power lines?
The 1N6115AUS is optimized for DC power rail protection (e.g., USB PD VBus, load switch inputs) with a 22V reverse stand-off and unidirectional conduction path. It is not intended for AC line protection or bidirectional signal lines-those require symmetric TVS or specialized AC-rated suppressors. Its functional diagram shows a single-shunt FET topology referenced to ground.
What is the leakage current specification for the 1N6115AUS at its rated working voltage?
At 22V reverse stand-off voltage (VRWM) and 25°C, the 1N6115AUS exhibits a reverse leakage current of 130–600nA, as specified in Table 2 of the official datasheet. This ultra-low leakage ensures minimal standby power loss in battery-operated IoT and portable devices, and remains stable across temperature per Figure 4.
1N6115AUS 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):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.3V
- Current - Peak Pulse (10/1000µs):
- 15A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
1N6115AUS FAQ
1.How can I place an order for 1N6115AUS through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6115AUS 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 1N6115AUS reliable?
The price and inventory of 1N6115AUS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6115AUS is usually 5 days.
3.What payment methods are accepted for 1N6115AUS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6115AUS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6115AUS?
1N6115AUS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6115AUS 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 1N6115AUS?
For technical support, including 1N6115AUS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6115AUS requirements.
6.How does Aetrix verify that 1N6115AUS is sourced from the original manufacturer or authorized distributors?
All 1N6115AUS 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 1N6115AUS meets industry standards.
7.What is the process for return or replacement of 1N6115AUS?
All 1N6115AUS units undergo pre-shipment inspection (PSI). If there is an issue with 1N6115AUS, 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 1N6115AUS part is unused and in its original packaging.
Return procedure for 1N6115AUS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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