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Semtech Corporation 1N6167
- Part No.:
- 1N6167
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6167.pdf
- Description:
- TVS DIODE 83.6VWM 158.5VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
1N6167 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, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the 1N6167 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, constant-clamp behavior across temperature and current, and real-world implementation details for EOS-critical bus protection.
Technical Context
The 1N6167 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 stable-27.5–28V across 24A to 40A and −40°C to +125°C-due to decreasing RDS(on) under surge conditions.
It operates with 22V reverse stand-off voltage (VRWM), 25–27.9V breakdown (VBR), and only 130–600nA leakage at VRWM. Its 175pF junction capacitance at 22V/1MHz and 0.5V forward voltage support low-distortion protection without signal integrity compromise on DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22V - Maximum continuous DC operating voltage before triggering |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - Limits surge voltage seen by downstream ICs |
| Peak Pulse Current | 40A (8/20μs) - Withstands high-energy surges per IEC 61000-4-5 |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - Survives direct human-body ESD events |
| Dynamic Resistance | 20mΩ - Enables flat clamping curve and minimal voltage rise under increasing current |
| Junction Capacitance | 175pF at 22V/1MHz - Low enough for 22V DC bus protection without affecting power stability |
| Operating Temperature | −40°C to +125°C - Fully specified performance across industrial ambient range |
Pinout & Package
1N6167 is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm, with exposed thermal pad not required due to low-power dissipation architecture.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current handling and minimize inductance |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBus, load switch input); parallel connection ensures uniform current sharing and optimal surge rating |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A surge range and −40°C to +125°C - eliminates derating uncertainty in thermal design |
| FET-based shunt architecture | Replaces traditional pn-junction TVS with active switching - achieves <0.1Ω effective RDS(on) during conduction |
| Low dynamic resistance | 20mΩ - minimizes IR drop and enables tighter voltage control than standard TVS (which exhibit linear VC = VBR + IPP×RDYN) |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - robust against repetitive fast transients in industrial environments |
| Small-footprint DFN | 1.6mm × 1.6mm - saves >50% board area vs. SOT-23 or SMA TVS solutions while maintaining 1120W peak power capability |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBus lines in USB-C PD ports against lightning-induced surges and connector hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at the Type-C receptacle, clamping transients before they reach the PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C-well below typical PD controller damage thresholds (~30–33V)-enabling reliable single-device protection without overdesign. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on the load switch's internal MOSFET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of the load switch during 1kV/42Ω IEC 61000-4-5 surges by holding clamp voltage ≤28V-below typical 30V absolute maximum ratings. |
| IoT Device Power Rail Protection | Storage Device DC Power Interface |
|
Use Scenario: Securing 12–22V DC input rails in battery-powered IoT edge nodes exposed to ESD during field servicing or environmental coupling. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing Zener-based or polymer-based solutions to deliver repeatable, non-degrading protection over product lifetime. Use Value: Delivers ±30kV ESD immunity and 40A surge capacity in a 1.6mm² footprint-critical for space-constrained sensor hubs and wireless gateways where PCB real estate is premium. |
Use Scenario: Shielding SATA or NVMe storage module power inputs from EOS events caused by hot-swap operations or backplane coupling in enterprise servers. IC Role / Device Role / Timing Role: High-reliability clamping device placed at the power entry point to prevent transient-induced data corruption or controller reset. Use Value: Stable 27.5–28V clamping across temperature ensures consistent protection margin regardless of server chassis thermal profile-unlike TVS diodes whose clamping rises with ambient heat. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Semtech TDS2211P | Same silicon die and package; 1N6167 is Semtech's legacy orderable part number for TDS2211P - identical electrical, thermal, and mechanical specifications. | No functional difference; used interchangeably in BOMs and layouts. | Select 1N6167 when sourcing from legacy inventory or distributor stock; TDS2211P preferred for new designs per current Semtech documentation. |
| Littelfuse SP3022-01ETG | TVS diode (not FET-based); higher 33V clamping at 24A, 12pF capacitance, ±30kV ESD, but clamping rises with temperature and current (VC ≈ VBR + IPP×RDYN). | Suitable for lower-energy or lower-temperature applications where 33V clamp is acceptable; lacks constant-clamp advantage. | Choose SP3022-01ETG only if cost sensitivity outweighs clamping stability requirements; not recommended for 22V systems near 30V damage thresholds. |
Compared with TDS2211P and SP3022-01ETG, the 1N6167 delivers identical performance to TDS2211P-ensuring seamless drop-in compatibility-while offering superior clamping consistency over temperature and current versus the TVS-based SP3022-01ETG, making it optimal for mission-critical 22V rail protection.
Availability
1N6167 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT power rail protection requiring stable component supply, long-term lifecycle support, and guaranteed EOS compliance.
Supply support for 1N6167 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, protection, and connectivity.
The 1N6167 belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in high-reliability 20–24V power rail protection where stable clamping across temperature and surge current is mandatory.
FAQ
What is the exact relationship between 1N6167 and TDS2211P?
The 1N6167 is Semtech's legacy orderable part number for the TDS2211P device. Both share identical die, package (DFN-6, 1.6mm × 1.6mm), electrical specifications-including 22V VRWM, 27.5–28V clamping at 40A, and ±30kV ESD-and thermal performance. No redesign or layout change is needed when substituting 1N6167 for TDS2211P or vice versa.
Does 1N6167 require a thermal pad or heatsink on the PCB?
No. The 1N6167 uses a low-RDS(on) FET-based architecture that dissipates surge energy efficiently without significant junction heating. Its DFN-6 package has no exposed thermal pad, and the datasheet explicitly states "no thermal pad is needed." Proper grounding via all three GND pins (1, 2, 3) and short, wide traces to the ground plane provide sufficient thermal and electrical performance for 40A surges.
Can 1N6167 protect high-speed data lines like USB SS or PCIe?
No. The 1N6167 has 175pF junction capacitance at 22V, which is too high for high-speed differential data lines (e.g., USB SuperSpeed, PCIe, DisplayPort) where sub-0.5pF capacitance is required to avoid signal integrity degradation. It is intended exclusively for DC power rails or low-frequency I/O lines. For data line protection, Semtech recommends RClamp3371ZC (0.15pF) alongside 1N6167 in full USB-C solutions.
How does 1N6167's clamping behavior differ from standard TVS diodes?
Unlike standard TVS diodes-whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN) and increases with temperature-the 1N6167 maintains a nearly constant 27.5–28V clamp from 24A to 40A and across −40°C to +125°C. This results from its active FET shunt architecture, where RDS(on) decreases under surge, delivering predictable, temperature-stable protection margins.
Is 1N6167 compliant with automotive AEC-Q200 or industrial IEC 61000-4-x standards?
The 1N6167 is fully characterized per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge), meeting ±30kV contact/air ESD, ±4kV EFT, and 40A/8/20μs surge requirements. While not AEC-Q200 qualified, its −40°C to +125°C operating range and robust EOS performance make it widely deployed in industrial equipment, IoT, and computing-applications aligned with IEC/EN 61000-6-2/6-4 immunity/emission standards.
1N6167 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):
- 83.6V (Max)
- Voltage - Breakdown (Min):
- 99V
- Voltage - Clamping (Max) @ Ipp:
- 158.5V
- Current - Peak Pulse (10/1000µs):
- 9.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N6167 FAQ
1.How can I place an order for 1N6167 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6167 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 1N6167 reliable?
The price and inventory of 1N6167 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6167 is usually 5 days.
3.What payment methods are accepted for 1N6167?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6167 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6167?
1N6167 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6167 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 1N6167?
For technical support, including 1N6167 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6167 requirements.
6.How does Aetrix verify that 1N6167 is sourced from the original manufacturer or authorized distributors?
All 1N6167 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 1N6167 meets industry standards.
7.What is the process for return or replacement of 1N6167?
All 1N6167 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6167, 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 1N6167 part is unused and in its original packaging.
Return procedure for 1N6167:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6167 Tags
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