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Semtech Corporation 1N6117A
- Part No.:
- 1N6117A
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6117A.pdf
- Description:
- TVS DIODE 22.8VWM 41.6VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,138
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Product details
Overview
1N6117A 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 1N6117A datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance, DFN-6 package layout constraints, and compatibility with 22V bus protection where conventional TVS diodes exhibit rising VC with IPP.
Technical Context
The 1N6117A 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 standard TVS diodes, its clamping voltage remains nearly constant over 0–40A (8/20μs) due to decreasing RDS(on) under surge conditions.
It operates across –40°C to +125°C with stable 27.5–28V clamping at rated current, 175pF junction capacitance at 22V/1MHz, and <600nA reverse leakage. The device is optimized for unsymmetrical line protection and meets IEC 61000-4-4 (±4kV EFT), -4-2 (±30kV), and -4-5 (±1kV, 1.2/50μs) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge |
| Peak Pulse Current | 40A (8/20μs) - supports industrial surge immunity per IEC 61000-4-5 with 2Ω source impedance |
| Dynamic Resistance | 20mΩ - enables flat clamping response by minimizing ΔV = IPP × RDYN contribution |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for VBus protection without signal integrity impact on DC/low-frequency lines |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements for rugged handheld and industrial interfaces |
Pinout & Package
1N6117A is housed in a 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: three parallel input pins and three parallel ground pins, requiring full connection for rated 40A surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path; all three must be connected with low-inductance routing to maximize surge current handling |
| Pins 4, 5, 6 | IN | Parallel-connected input node for protected line (e.g., USB PD VBus); all three required for full 40A rating |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A (8/20μs), eliminating design margin inflation needed with conventional TVS |
| Temperature-stable protection | Clamping remains ~27.6V across –40°C to +125°C, unlike TVS diodes whose VC rises >10V over same range |
| Low dynamic resistance | 20mΩ enables sub-1V IR drop at 40A, critical for maintaining tight voltage windows on 22V rails |
| High-energy ESD robustness | ±30kV contact discharge withstand allows direct placement on external connectors without upstream filtering |
| DFN-6 space efficiency | 1.6mm × 1.6mm footprint saves >60% board area vs. SO-8 or SOT-23 TVS solutions rated for equivalent surge energy |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBus lines in USB-C ports supporting up to 100W PD negotiation against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the Type-C receptacle, shunting surge current to ground before it reaches the PD controller or e-fuse. Use Value: Maintains 27.6V clamping at 40A and 125°C-well below typical PD controller absolute max ratings (e.g., 28–30V), preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) exposed to field wiring transients in remote meters or robotics. IC Role / Device Role / Timing Role: Primary front-end protector that limits voltage stress on the load switch's internal MOSFET during 1.2/50μs surges up to ±1kV. Use Value: Prevents overvoltage failure of the load switch's integrated FET by clamping at 28V-below its 30V VDS(max)-while sustaining 40A surge without thermal runaway. |
| IoT Device Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT edge nodes deployed in electrically noisy environments (e.g., factory floors, smart agriculture). IC Role / Device Role / Timing Role: Standalone EOS protector on main power entry point, coordinated with upstream fuse and downstream LDOs or PMICs. Use Value: Delivers 40A surge capability in 1.6mm² area-enabling compact, fanless enclosures-while its flat clamping avoids brownout during transient events. |
Use Scenario: Hardening 20V DC-in ports on ultrabooks and tablets against accidental adapter misconnection or AC-line coupled surges. IC Role / Device Role / Timing Role: First-line defense between barrel jack/USB-C port and system power management IC, absorbing energy before it propagates to buck converters. Use Value: 175pF capacitance introduces negligible ripple on 20V rail; combined with 22V working voltage, it avoids false triggering during normal 20V ±10% operation. |
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; 22V VRWM, 35.5V VC @ 12.3A (8/20μs), 1.5Ω dynamic resistance | Higher clamping voltage rises to >42V at 40A and increases with temperature; suitable only for lower-energy threats | Select SMAJ22A only if surge current requirement is ≤15A and thermal derating margins allow higher VC at elevated ambient temperatures. |
| TDS2211P | Same functional family as 1N6117A; identical electrical specs, DFN-6 package, and marking code T22; Semtech's direct replacement part number | No functional or layout difference; TDS2211P is the official Semtech orderable designation for this device | 1N6117A and TDS2211P are identical in silicon, package, and performance-TDS2211P is preferred for new designs per Semtech's current ordering nomenclature. |
Compared with SMAJ22A, 1N6117A delivers 14.5V lower clamping at 40A and stable performance across temperature, enabling tighter system voltage margins; versus TDS2211P, it is functionally and physically identical-differing only in legacy part numbering convention.
Availability
1N6117A is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6117A 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 infrastructure, industrial, and advanced communications markets.
The 1N6117A belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V bus protection applications where clamping stability and surge robustness are critical.
FAQ
What is the maximum continuous operating voltage for the 1N6117A?
The 1N6117A has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC or RMS without entering conduction. This makes it suitable for 20V USB PD VBus and 24V industrial power rails where nominal voltage stays within specification and transient excursions are suppressed.
How does the 1N6117A achieve stable clamping voltage across varying surge currents?
The 1N6117A uses a surge-rated FET as its core protection element. When triggered, the FET's RDS(on) decreases under higher current, counteracting the linear rise seen in TVS diodes. As a result, the 1N6117A maintains clamping voltage between 27.5V and 28V from 24A to 40A (8/20μs), confirmed in Semtech's datasheet Figure 3.
Is the 1N6117A pin-compatible with standard TVS diodes in SOT-23 or DO-214 packages?
No-the 1N6117A uses a proprietary 6-pin DFN package (1.6mm × 1.6mm) with three parallel input pins (4–6) and three parallel ground pins (1–3). It is not pin-compatible with 2-pin SOT-23 or 2-pin DO-214 TVS devices; PCB layout must accommodate the DFN-6 footprint and multi-pin parallel routing per Semtech's layout guidelines.
What is the junction capacitance of the 1N6117A, and how does it affect circuit performance?
The 1N6117A exhibits 175pF junction capacitance at 22V and 1MHz. This value is low enough to avoid loading effects on DC or low-frequency power rails (e.g., USB PD VBus), but too high for high-speed data lines like USB SS or PCIe-those require sub-0.3pF protectors such as RClamp3371ZC.
Does the 1N6117A require a thermal pad or heatsink for 40A surge handling?
No-Semtech explicitly states no thermal pad is needed. The 1N6117A dissipates surge energy in the FET channel, not the junction, and its DFN-6 package relies on low-inductance PCB copper pour and multiple vias to ground for effective heat spreading during transient events, as detailed in the "Layout Guidelines" section of the datasheet.
1N6117A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- Axial
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 22.8V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.6V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6117A FAQ
1.How can I place an order for 1N6117A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6117A 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 1N6117A reliable?
The price and inventory of 1N6117A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6117A is usually 5 days.
3.What payment methods are accepted for 1N6117A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6117A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6117A?
1N6117A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6117A 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 1N6117A?
For technical support, including 1N6117A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6117A requirements.
6.How does Aetrix verify that 1N6117A is sourced from the original manufacturer or authorized distributors?
All 1N6117A 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 1N6117A meets industry standards.
7.What is the process for return or replacement of 1N6117A?
All 1N6117A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6117A, 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 1N6117A part is unused and in its original packaging.
Return procedure for 1N6117A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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