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Semtech Corporation 1N6110A
- Part No.:
- 1N6110A
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6110A.pdf
- Description:
- TVS DIODE 11.4VWM 21VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,415
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Product details
Overview
1N6110A from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection on 22V DC 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, Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6110A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and real-world implementation insights for surge-critical bus protection.
Technical Context
The 1N6110A uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. 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 across temperature, 175pF junction capacitance at 22V/1MHz, and <600nA reverse leakage at VRWM. Its functional architecture enables reliable protection of voltage-sensitive controllers-such as USB PD ICs-without derating at elevated ambient temperatures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD VBus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below typical 29–30V damage threshold of USB PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards. |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise during high-current transients, enabling precise clamping control. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for DC power line protection without signal integrity impact. |
Pinout & Package
1N6110A 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 must be connected for full 40A surge rating: pins 1–3 are dedicated ground terminals; pins 4–6 form a parallel input node for the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return path; all three must be vias-connected to solid ground plane for 40A capability. |
| 4, 5, 6 | IN | Parallel-connected input node for protected bus (e.g., USB PD VBus); single trace routing recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Voltage | 27.5–28V across 24–40A and −40°C to +125°C - eliminates need for thermal derating in hot environments. |
| FET-Based Shunt Architecture | Surge-rated MOSFET + precision trigger circuit - achieves lower clamping than TVS diodes with no voltage drift vs. current. |
| Low Dynamic Resistance | 20mΩ - minimizes IR drop during surge, preserving voltage margin for downstream ICs. |
| High-Energy Surge Rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-surge events per IEC 61000-4-5. |
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. IC Role / Device Role / Timing Role: Primary EOS shunt device placed directly at connector, clamping surges before reaching PD controller and e-fuse. Use Value: Maintains 27.5–28V clamping across temperature-prevents false overvoltage shutdown and avoids controller latch-up during hot operation. |
Use Scenario: Safeguarding input of high-side load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on the load switch's internal FET during lightning-induced surges. Use Value: Enables use of smaller, lower-cost load switches by preventing gate oxide damage and drain-source avalanche failure. |
| IoT Device DC Power Rail Protection | Storage Device 24V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to ESD during field servicing. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks for compact, high-reliability designs. Use Value: Delivers ±30kV ESD immunity and 40A surge handling in 1.6×1.6mm footprint-reducing board area by >60% vs. discrete alternatives. |
Use Scenario: Protecting 24V backup power inputs in NVMe SSD enclosures and RAID controllers. IC Role / Device Role / Timing Role: Fast-acting clamping device placed upstream of DC-DC converters and PMICs to prevent input overvoltage faults. Use Value: Stable 27.5–28V clamping ensures converter UVLO and OVP thresholds remain unbreached during transient events. |
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; 35.5V clamping at 12.5A (8/20μs); higher dynamic resistance (~0.5Ω). | Limited to lower-energy surges; clamping rises to ~42V at 40A and increases with temperature. | Choose SMAJ22A only for cost-sensitive, low-surge applications where 22V working voltage suffices but 28V clamping margin is acceptable. |
| TDS2211P | Same family, identical electrical specs and DFN-6 package; direct Semtech replacement with identical marking and reel packaging. | No functional or layout difference; validated for same USB PD, load switch, and industrial use cases. | Select TDS2211P when sourcing from Semtech's official channel or requiring documented lifecycle support and traceable manufacturing. |
Compared with SMAJ22A, 1N6110A delivers 9V lower clamping at full 40A surge and stable performance across temperature-critical for protecting modern 28V-tolerant controllers. Against TDS2211P, 1N6110A is functionally identical but may reflect alternate distribution channel branding or date-code batch labeling.
Availability
1N6110A is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and IoT device 22V power rails requiring stable component supply, long-term obsolescence management, and full compliance documentation.
Supply support for 1N6110A 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 protection, sensing, and signal integrity.
The 1N6110A belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V bus protection applications where stable clamping and temperature independence are mandatory.
FAQ
What is the maximum clamping voltage of the 1N6110A at 40A surge current?
The 1N6110A clamps at 27.5–28V under 40A peak pulse current (8/20μs waveform), as guaranteed by design and verified across −40°C to +125°C. This value remains stable regardless of temperature or current magnitude within its rated range, distinguishing it from conventional TVS diodes whose clamping rises linearly with current.
Is the 1N6110A pin-compatible with standard SOD-123 or SMA packages?
No-the 1N6110A uses a proprietary 6-pin DFN-1616 package (1.6mm × 1.6mm × 0.55mm) with three GND pins (1–3) and three IN pins (4–6). It is not mechanically or electrically compatible with SOD-123, SMA, or other legacy TVS footprints. PCB layout must follow Semtech's recommended land pattern with multiple ground vias.
Does the 1N6110A require external bias or control signals to operate?
No-the 1N6110A is fully passive and autonomous. It contains an integrated trigger circuit and surge-rated FET; no external power, enable signal, or configuration is needed. It activates instantly when transient voltage exceeds its breakdown threshold, making it ideal for "set-and-forget" protection schemes.
Can the 1N6110A protect bidirectional data lines like USB DP/DM?
No-the 1N6110A is designed exclusively for unidirectional DC power or I/O line protection (e.g., VBus, load switch input). For high-speed data lines such as USB DP/DM, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF), which are optimized for signal integrity and not interchangeable with the 1N6110A.
What is the junction-to-ambient thermal resistance (θJA) of the 1N6110A?
The 1N6110A does not specify θJA because it dissipates surge energy primarily through conduction-not junction heating-and requires no thermal pad. Its DFN-6 package relies on low-inductance ground vias and PCB copper area for transient energy dissipation; thermal derating is unnecessary due to its constant-clamping FET architecture.
1N6110A 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):
- 11.4V
- Voltage - Breakdown (Min):
- 14.25V
- Voltage - Clamping (Max) @ Ipp:
- 21V
- Current - Peak Pulse (10/1000µs):
- 23.8A
- 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
1N6110A FAQ
1.How can I place an order for 1N6110A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6110A 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 1N6110A reliable?
The price and inventory of 1N6110A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6110A is usually 5 days.
3.What payment methods are accepted for 1N6110A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6110A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6110A?
1N6110A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6110A 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 1N6110A?
For technical support, including 1N6110A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6110A requirements.
6.How does Aetrix verify that 1N6110A is sourced from the original manufacturer or authorized distributors?
All 1N6110A 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 1N6110A meets industry standards.
7.What is the process for return or replacement of 1N6110A?
All 1N6110A units undergo pre-shipment inspection (PSI). If there is an issue with 1N6110A, 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 1N6110A part is unused and in its original packaging.
Return procedure for 1N6110A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6110A Tags
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