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Semtech Corporation JANTX1N6129
- Part No.:
- JANTX1N6129
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- Axial
- Datasheet:
-
JANTX1N6129.pdf
- Description:
- MIL 500 W BIPOLAR TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,077
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Product details
Overview
JANTX1N6129 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 - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the JANTX1N6129 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection in high-reliability embedded and industrial systems.
Technical Context
JANTX1N6129 implements a surge-rated FET shunt architecture with a precision trigger circuit that activates the low-RDS(on) FET during overvoltage events - unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A (8/20μs) and −40°C to +125°C due to decreasing FET on-resistance under surge conditions.
The device operates as a three-terminal bidirectional protector: pins 4–6 serve as the protected line input, pins 1–3 are ground terminals, and internal drive circuitry ensures sub-10ns response to transients while maintaining 175pF junction capacitance at 22V reverse bias - enabling use on high-speed 22V power rails without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave, RS=2Ω) - ensures downstream 22V-rated ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS=42Ω, CS=0.5μF) on unsymmetrical lines. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements without derating. |
| Dynamic Resistance | 20mΩ (measured 1–40A, 8/20μs) - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without affecting load switch enable timing or feedback loop stability. |
| Operating Temp | −40°C to +125°C - maintains specified clamping and leakage performance across full industrial temperature range. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging (3,000 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current - all three must be connected with low-inductance vias to maximize 40A handling capability. |
| Pins 4, 5, 6 | IN | Protected line input - tied together to interface with 22V bus (e.g., VBUS in USB PD); single-point connection to connector minimizes trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Replaces traditional TVS diodes with active switching - eliminates linear VC = VBR + IPP×RDYN dependency and delivers stable clamping across current and temperature. |
| Constant clamping voltage | 27.5–28V over full 24–40A surge range and −40°C to +125°C - removes thermal derating calculations and simplifies margin analysis for 22V system design. |
| Low dynamic resistance | 20mΩ enables <1V overshoot during 40A transients - critical for protecting sensitive 22V load switches (e.g., HS2950P) from gate oxide failure. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz bursts) - sustains operation in electrically noisy industrial environments without latch-up or parameter shift. |
| Small-footprint DFN | 1.6mm × 1.6mm area saves >60% board space vs. SO-8 or SOT-23 TVS solutions - ideal for compact USB Type-C receptacles and IoT edge nodes. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBUS lines in USB-C ports supporting up to 100W PD, exposed to ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed immediately after the USB-C connector, clamping transients before they reach the PD controller and buck-boost converter. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to 22V-rated PD controllers (e.g., STUSB4500, TUSB7320) where conventional TVS would exceed 38V at same conditions. |
Use Scenario: Safeguarding input terminals of programmable load switches (e.g., HS2950P, TPS22990) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: High-current transient diverter placed between input capacitor and load switch VIN pin, absorbing energy before it stresses the internal FET's gate oxide. Use Value: 20mΩ dynamic resistance limits voltage rise to <1V during 40A surges - keeps load switch VGS within safe operating area and avoids catastrophic failure during field-deployed surge events. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed wireless sensors and gateway modules subjected to ESD during handling and EFT in factory floor environments. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks - handles both fast ESD (±30kV) and slower surges (±1kV IEC 61000-4-5) on same rail. Use Value: 175pF capacitance avoids loading effects on 22V LDO feedback paths or PMIC enable signals - preserves regulation accuracy and startup sequencing integrity. |
Use Scenario: Protecting 22V supercapacitor or LiFePO4 backup supplies in enterprise SSDs and NAS enclosures against power-line transients during AC mains switching. IC Role / Device Role / Timing Role: Bidirectional clamping device connected across backup supply input, limiting voltage excursions during capacitor bank charge/discharge faults. Use Value: Stable 27.5–28V clamping ensures backup supply stays within 22V-rated storage IC tolerances (e.g., MAX32664, BQ24650) even under repeated 40A surge stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, commercial-grade version (−40°C to +85°C), identical electrical specs and pinout - differs only in temperature rating and screening. | Approved for commercial/industrial end-equipment but not military/aerospace; lacks JANTX-level burn-in and lot traceability. | Select when full MIL-PRF-19500 JANTX qualification is unnecessary and cost sensitivity outweighs extended temperature margin. |
| SM712.TCT | Bi-directional TVS array (12V/24V dual-line), 350W peak power, 15A IPP (8/20μs), higher clamping (~35V at 15A), no FET architecture. | Designed for RS-485/RS-232 data lines - lacks the low-RDYN and flat-clamp behavior needed for 22V power rail protection. | Consider only for lower-energy 22V signal-line protection where 35V clamping is acceptable and surge current <15A. |
Compared with JANTX1N6129, TDS2211P.C offers identical protection performance at lower cost for non-military applications, while SM712.TCT provides lower-cost surge suppression for less demanding scenarios but cannot replicate the 27.5V flat clamping or 40A capability required for robust 22V power rail defense.
Availability
JANTX1N6129 is available at Aetrix Electronics and suitable for USB Type-C PD designs, industrial load switch interfaces, IoT edge node power rails, and storage device backup supplies requiring stable component supply across long-lifecycle programs.
Supply support for JANTX1N6129 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 - with leadership in transient suppression, LoRa® RF, and signal integrity solutions.
JANTX1N6129 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V power rail protection where flat clamping, temperature stability, and 40A surge handling are mandatory.
FAQ
What is the primary function of JANTX1N6129 in a circuit?
JANTX1N6129 functions as a transient diverting suppressor for 22V power or I/O lines, using an active FET shunt architecture to clamp overvoltage events such as ESD, lightning surges, and EFT. Unlike passive TVS diodes, JANTX1N6129 maintains a near-constant 27.5–28V clamping voltage across its full 40A surge rating and −40°C to +125°C operating range - making it ideal for protecting sensitive 22V-rated components like USB PD controllers and load switches.
How does JANTX1N6129 differ from standard TVS diodes in clamping behavior?
JANTX1N6129 uses a surge-rated FET triggered by a precision circuit, resulting in a dynamic resistance of just 20mΩ - causing clamping voltage to remain stable at 27.5–28V from 24A to 40A (8/20μs). Standard TVS diodes follow VC = VBR + IPP×RDYN, so their clamping rises linearly with current and temperature; for example, a typical 22V TVS may clamp at 38V at 24A and 125°C, whereas JANTX1N6129 holds at ≤28V under identical conditions.
What is the correct PCB layout practice for JANTX1N6129?
Place JANTX1N6129 as close as possible to the protected connector (e.g., USB-C port), tie pins 4–6 directly to the incoming 22V line via a short, wide trace, and connect pins 1–3 to a solid ground plane using ≥3 low-inductance vias. Avoid thermal pads - energy is dissipated internally. Do not isolate any of the three GND or three IN pins; all six must be fully connected to achieve rated 40A surge performance and minimize parasitic inductance.
Can JANTX1N6129 be used on high-speed data lines like USB SuperSpeed?
No - JANTX1N6129 is not intended for high-speed data lines. Its 175pF junction capacitance is optimized for 22V power rail protection, not signal integrity. For USB SuperSpeed (TX/RX), Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25pF). JANTX1N6129 should be applied only to VBUS, CC, SBU, or other low-frequency 22V power/control lines where capacitance is non-critical.
What standards does JANTX1N6129 meet for surge and ESD protection?
JANTX1N6129 meets IEC 61000-4-2 (±30kV contact/air ESD), IEC 61000-4-5 (40A, 8/20μs; ±1kV, 1.2/50μs + 8/20μs combo wave, RS=42Ω), and IEC 61000-4-4 (±4kV EFT, 5/50ns bursts). It is also qualified to MIL-PRF-19500 JANTX level, including extended temperature screening (−55°C to +150°C storage), hermeticity testing, and lot traceability - exceeding commercial-grade requirements.
JANTX1N6129 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):
- 69.2V
- Voltage - Breakdown (Min):
- 81.9V
- Voltage - Clamping (Max) @ Ipp:
- 131.1V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
JANTX1N6129 FAQ
1.How can I place an order for JANTX1N6129 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6129 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 JANTX1N6129 reliable?
The price and inventory of JANTX1N6129 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6129 is usually 5 days.
3.What payment methods are accepted for JANTX1N6129?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N6129 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N6129?
JANTX1N6129 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6129 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 JANTX1N6129?
For technical support, including JANTX1N6129 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6129 requirements.
6.How does Aetrix verify that JANTX1N6129 is sourced from the original manufacturer or authorized distributors?
All JANTX1N6129 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 JANTX1N6129 meets industry standards.
7.What is the process for return or replacement of JANTX1N6129?
All JANTX1N6129 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6129, 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 JANTX1N6129 part is unused and in its original packaging.
Return procedure for JANTX1N6129:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N6129 Tags
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