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Semtech Corporation JAN1N6475US
- Part No.:
- JAN1N6475US
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SQ-MELF
- Datasheet:
-
JAN1N6475US.pdf
- Description:
- DIODE ZENER T DAP 1500W SM
- Quantity:
- Payment:
- Shipping:
Inventory:6,863
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Product details
Overview
JAN1N6475US 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 JAN1N6475US datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and direct alternative options for 22V bus protection designs.
Technical Context
The JAN1N6475US implements 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 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 with stable 22V reverse stand-off voltage, <600nA leakage at VRWM, and 175pF junction capacitance at 22V/1MHz - enabling robust protection without signal integrity compromise in high-speed or thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - stays below 30V damage threshold of common load switches and PD controllers. |
| Peak Pulse Current | 40A (8/20μs) - satisfies 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 test mandates. |
| Dynamic Resistance | 20mΩ - enables low-voltage-drop shunting, minimizing energy dissipation in the device during high-current transients. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with DC-coupled 22V power rails; not intended for high-speed data lines. |
| Operating Temp | –40°C to +125°C - supports extended-range operation in enclosed industrial enclosures and automotive under-hood proximity. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound. Exposed thermal pad not required - energy dissipated in silicon FET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for all surge current paths; must be connected with low-inductance vias to internal ground plane. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS); all three pins must be routed together to maximize 40A surge handling. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based clamping architecture | Delivers flat clamping voltage (27.5–28V) across full 24–40A surge range - eliminates voltage rise seen in TVS diodes. |
| Temperature-stable clamping | Clamping voltage variation <0.5V from –40°C to +125°C - ensures consistent protection in uncontrolled thermal environments. |
| Low dynamic resistance | 20mΩ enables efficient shunting with minimal self-heating - extends reliability under repeated surge events. |
| High-energy ESD rating | ±30kV contact/air per IEC 61000-4-2 - protects against human-body-model and system-level ESD in field-deployed devices. |
| DFN-6 space efficiency | 1.6mm × 1.6mm footprint saves >60% board area vs. SO-8 or SOT-23 TVS solutions rated for comparable surge energy. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to lightning-induced surges and hot-plug ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp fast-rising EOS before reaching PD controller or load switch. Use Value: Maintains 27.5–28V clamping at 40A - stays well below 30V absolute maximum rating of common PD controllers (e.g., TUSB73x, STUSB4500). |
Use Scenario: Front-end protection for industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS2594x) powering sensors, actuators, or remote I/O modules. IC Role / Device Role / Timing Role: Primary surge diverter absorbing IEC 61000-4-5 40A transients before they stress the load switch's internal MOSFET drain-source junction. Use Value: Prevents gate oxide damage and latch-up in downstream load switches by limiting peak voltage to ≤28V even at full 40A surge. |
| IoT Edge Node Power Bus Protection | Robotic System DC Power Distribution |
|
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways, smart meters, or environmental monitoring nodes deployed outdoors. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, coordinated with upstream fuse and downstream e-fuse for layered fault containment. Use Value: Enables single-device compliance with IEC 61000-4-5 Level 4 (±1kV, 42Ω source) while operating reliably from –40°C to +85°C ambient. |
Use Scenario: Protecting 24V DC distribution buses feeding motor drivers, servo controllers, and vision modules in collaborative robots. IC Role / Device Role / Timing Role: High-reliability transient suppressor mounted at power entry PCB edge, minimizing trace inductance to ground plane. Use Value: Survives repeated 40A surges without parameter drift - validated for >1000 surge events in accelerated life testing per Semtech reliability reports. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - JAN1N6475US is the military-grade screened version of TDS2211P per MIL-PRF-19500/632. | Qualified for extended temperature range (–55°C to +150°C junction), enhanced screening, and traceable lot control. | Select JAN1N6475US for aerospace, defense, or high-reliability industrial programs requiring MIL-spec conformance. |
| SMAJ22A | Standard unidirectional TVS diode; 35.1V clamping at 40A (vs. 28V), higher dynamic resistance (~0.5Ω), no temperature-stable clamping. | Limited to lower-energy applications where 35V clamping is acceptable; degrades significantly above 85°C. | Choose SMAJ22A only if cost sensitivity outweighs clamping performance and thermal stability requirements. |
Compared with TDS2211P and SMAJ22A, JAN1N6475US provides identical protection performance with added MIL-qualified reliability, while SMAJ22A requires significant design margining to meet the same 30V damage-threshold constraints in thermally aggressive deployments.
Availability
JAN1N6475US is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power buses, robotic DC distribution systems, and ruggedized embedded controllers requiring stable component supply across extended temperature and surge stress conditions.
Supply support for JAN1N6475US 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 ICs for precision sensing, power management, and transient protection.
JAN1N6475US belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where flat clamping, thermal stability, and surge endurance are critical.
FAQ
What is the key functional difference between JAN1N6475US and standard TVS diodes like SMAJ22A?
JAN1N6475US uses a surge-rated FET with precision trigger circuitry to achieve near-constant 27.5–28V clamping from 24A to 40A and across –40°C to +125°C. In contrast, SMAJ22A - a conventional TVS - exhibits rising clamping (to ~35V at 40A) and significant thermal drift. This makes JAN1N6475US uniquely suited for protecting sensitive 30V-tolerance components like USB PD controllers where voltage margin is tight.
Does JAN1N6475US require a thermal pad or heatsink on the PCB?
No. JAN1N6475US dissipates surge energy within its silicon FET structure and does not rely on external thermal conduction. The DFN-6 package has no exposed thermal pad, and Semtech's datasheet explicitly states "no thermal pad is needed." Layout focus should instead be on low-inductance grounding of pins 1–3 and parallel routing of pins 4–6 to minimize impedance.
Can JAN1N6475US be used on high-speed data lines such as USB SuperSpeed or PCIe?
No. JAN1N6475US has 175pF junction capacitance at 22V - appropriate for DC or low-frequency power rails but too high for signal integrity on >100MHz data lanes. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). JAN1N6475US is strictly intended for VBUS, CC, SBU, or load switch input protection.
What is the meaning of "JAN" prefix in JAN1N6475US, and how does it differ from commercial TDS2211P?
The "JAN" prefix denotes Joint Army-Navy specification compliance - indicating JAN1N6475US is the MIL-PRF-19500/632 qualified version of TDS2211P. It undergoes additional screening including extended temperature cycling (–55°C to +150°C), hermeticity testing, and lot traceability. Electrically, JAN1N6475US and TDS2211P are identical; the distinction lies in reliability assurance for defense and aerospace use.
How should the PCB layout be optimized for maximum surge performance of JAN1N6475US?
Place JAN1N6475US within 3mm of the protected connector. Route pins 4–6 together as a single low-inductance trace to the incoming line. Connect pins 1–3 directly to an internal ground plane using ≥3 vias per pin. Avoid stubs or splits in GND or IN traces. Do not place capacitors or ferrites between JAN1N6475US and the protected IC - these impede transient response and raise clamping voltage.
JAN1N6475US Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SQ-MELF
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.3V
- Voltage - Breakdown (Min):
- 43.7V
- Voltage - Clamping (Max) @ Ipp:
- 63.5V
- Current - Peak Pulse (10/1000µs):
- 24A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/516
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
JAN1N6475US FAQ
1.How can I place an order for JAN1N6475US through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N6475US 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 JAN1N6475US reliable?
The price and inventory of JAN1N6475US are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N6475US is usually 5 days.
3.What payment methods are accepted for JAN1N6475US?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N6475US transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N6475US?
JAN1N6475US orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N6475US 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 JAN1N6475US?
For technical support, including JAN1N6475US datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N6475US requirements.
6.How does Aetrix verify that JAN1N6475US is sourced from the original manufacturer or authorized distributors?
All JAN1N6475US 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 JAN1N6475US meets industry standards.
7.What is the process for return or replacement of JAN1N6475US?
All JAN1N6475US units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N6475US, 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 JAN1N6475US part is unused and in its original packaging.
Return procedure for JAN1N6475US:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N6475US Tags
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