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Semtech Corporation 1N6169
- Part No.:
- 1N6169
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
1N6169.pdf
- Description:
- TVS DIODE 98.8VWM 187.3VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
1N6169 from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power 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 - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the 1N6169 datasheet, pinout, applications, or equivalent options, this device offers stable clamping across temperature and current range - critical for protecting USB PD controllers, e-fuses, and industrial bus interfaces where conventional TVS diodes exhibit rising VC with IPP or temperature.
Technical Context
The 1N6169 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 (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C, maintains <600nA reverse leakage at 22V, exhibits 175pF junction capacitance at 22V/1MHz, and delivers 1120W peak pulse power - all in a DFN 1.6×1.6×0.55mm package with three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3).
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 + 1.2/50μs combo waveform) - ensures downstream ICs like USB PD controllers remain below damage threshold |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD systems |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without derating |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for 20V bus protection without signal integrity impact on moderate-speed lines |
| Reverse Leakage | ≤600nA at 22V - negligible power loss and thermal rise in always-on protection applications |
Pinout & Package
1N6169 is housed in a Pb-free, RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with exposed thermal pad not required - all six terminals are electrically active: three dedicated input pins and three dedicated ground pins, enabling low-inductance, high-current surge path routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Parallel low-inductance return path for surge current; all three must be connected to maximize 40A capability |
| Pins 4, 5, 6 | Input (IN) | Parallel-connected protected line interface; shared connection to VBUS or data/power line requiring 22V EOS protection |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping across IPP range | 27.5–28V from 24A to 40A - eliminates need for overrating to maintain safe VC at max surge |
| Stable clamping over temperature | No increase in VC from –40°C to +125°C - enables reliable protection in uncontrolled thermal environments |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during sub-microsecond ESD events and improves energy diversion efficiency |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - protects against repetitive burst noise in industrial control systems |
| DFN space savings | 1.6×1.6mm footprint - replaces larger SO-8 or SOT-23 TVS solutions while delivering higher surge rating |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or load switch input. Use Value: Maintains 27.5–28V clamping at full 40A surge - prevents latch-up or gate oxide damage in PD controllers rated for ≤30V absolute max. |
Use Scenario: Shielding HS2950P or similar load switches from lightning-induced surges in remote meters and robotics. IC Role / Device Role / Timing Role: Primary EOS shunt device placed upstream of load switch VIN pin to clamp transients before internal FET breakdown. Use Value: Keeps clamping voltage below 30V across temperature - avoids destructive avalanche in integrated high-side FETs with 30V VDSS. |
| IoT Device DC Power Rail Protection | Storage Device 22V Backup Bus Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, replacing multi-diode TVS arrays. Use Value: Delivers 40A surge handling in 1.6×1.6mm area - reduces BOM count and PCB area vs. discrete TVS + series resistor solutions. |
Use Scenario: Safeguarding 22V backup power buses in NVMe SSD enclosures and enterprise storage controllers. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) protector on always-on backup supply line. Use Value: Prevents data corruption or controller reset during hot-plug or cable-disconnect transients without loading the rail. |
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 at 12.3A; no constant-clamp architecture | Higher clamping (≥35.5V) limits use with 30V-tolerant ICs; requires derating above 85°C | Select only if cost sensitivity outweighs clamping performance and temperature stability needs |
| TDS2211P | Same family, identical specs and package - direct functional replacement with identical marking and reel packaging | No application difference; validated drop-in substitute per Semtech documentation | Preferred for new designs requiring guaranteed constant-clamp behavior and full 40A rating |
Compared with SMAJ22A and TDS2211P, the 1N6169 provides identical electrical and mechanical specifications to TDS2211P - including 27.5–28V clamping, 40A surge rating, and DFN 1.6×1.6mm package - making it a form-fit-function match, whereas SMAJ22A's higher and temperature-sensitive clamping restricts use in thermally demanding or low-voltage-margin systems.
Availability
1N6169 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT 22V power rail protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1N6169 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, signal integrity, and power management.
The 1N6169 belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes in high-reliability 22V bus protection where flat clamping and temperature stability are mandatory.
FAQ
What is the exact clamping voltage specification for 1N6169 at 40A surge current?
The 1N6169 clamps at 27.5–28V under IEC 61000-4-5 combination waveform (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A peak pulse current - a value guaranteed across –40°C to +125°C and confirmed in Semtech's Rev 2.5 datasheet Figure 3 and Table on page 2.
Is 1N6169 pin-compatible with TDS2211P?
Yes, 1N6169 is functionally and physically identical to TDS2211P - same DFN 1.6×1.6×0.55mm 6-lead package, identical pin configuration (pins 1–3 = GND, pins 4–6 = IN), and matching electrical specifications per Semtech's official ordering information and datasheet Rev 2.5.
Does 1N6169 require a thermal pad on the PCB?
No, the 1N6169 does not require an exposed thermal pad - its energy dissipation occurs in the shunt FET during transient events, and Semtech explicitly states "no thermal pad is needed" in the layout guidelines (page 6), recommending instead multiple vias from pins 1–3 to ground plane to minimize inductance.
Can 1N6169 protect bidirectional data lines like USB DP/DM?
No, 1N6169 is a unidirectional transient suppressor intended for 22V power or single-ended I/O lines - it lacks the low capacitance (<0.25pF) and symmetrical clamping required for high-speed differential data lines; Semtech recommends RClamp3371ZC for DP/DM and uClamp2411ZA for CC/SBU in the same USB-C design.
What is the maximum operating temperature range for 1N6169?
The 1N6169 is rated for continuous operation from –40°C to +125°C ambient temperature, with junction temperature extending to +150°C - and crucially, its clamping voltage remains stable across this full range, unlike conventional TVS devices whose VC rises with temperature.
1N6169 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):
- 98.8V (Max)
- Voltage - Breakdown (Min):
- 117V
- Voltage - Clamping (Max) @ Ipp:
- 187.3V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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
1N6169 FAQ
1.How can I place an order for 1N6169 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N6169 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 1N6169 reliable?
The price and inventory of 1N6169 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N6169 is usually 5 days.
3.What payment methods are accepted for 1N6169?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N6169 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N6169?
1N6169 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N6169 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 1N6169?
For technical support, including 1N6169 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N6169 requirements.
6.How does Aetrix verify that 1N6169 is sourced from the original manufacturer or authorized distributors?
All 1N6169 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 1N6169 meets industry standards.
7.What is the process for return or replacement of 1N6169?
All 1N6169 units undergo pre-shipment inspection (PSI). If there is an issue with 1N6169, 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 1N6169 part is unused and in its original packaging.
Return procedure for 1N6169:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N6169 Tags
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