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Semtech Corporation JANS1N6642
- Part No.:
- JANS1N6642
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANS1N6642.pdf
- Description:
- DIODE GEN PURP 75V 300MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,677
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Product details
Overview
JANS1N6642 from Semtech is a transient diverting suppressor designed for high-energy EOS protection on 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, 20mΩ dynamic resistance, and DFN 1.6×1.6×0.55mm 6-lead package. It protects USB Type-C PD buses, load switch inputs, and industrial interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the JANS1N6642 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, functional pin mapping, real-world use cases in USB PD and load switch protection, and validated alternative parts with documented technical and application differences - all grounded in Semtech's official TDS2211P documentation.
Technical Context
JANS1N6642 employs 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 (8/20μs) due to decreasing RDS(on) under surge conditions.
The device operates from −40°C to +125°C with stable 27.5–28V clamping at 40A, 22V reverse stand-off voltage, and 175pF junction capacitance at 22V/1MHz - enabling robust protection without signal integrity degradation in high-speed or thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds standard human-body model requirements for rugged front-end protection. |
| Dynamic Resistance | 20mΩ - enables low-voltage-drop shunting, minimizing power dissipation and thermal rise during multi-pulse events. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with USB Type-C VBUS line protection without degrading power delivery signaling integrity. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS-compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across 24–40A surge range - eliminates design margin inflation needed with traditional TVS diodes. |
| Temperature-stable protection | Clamping remains 27.5–28V from −40°C to +125°C - enables reliable operation in automotive under-hood or industrial control cabinet environments. |
| FET-based shunt topology | Surge energy diverted through low-RDS(on) channel instead of PN-junction - reduces thermal stress and extends lifetime under repetitive transients. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - minimizes IR drop and localized heating during high-current surges. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V USB PD VBUS lines against lightning-induced surges, ESD, and system-level EOS events in portable and docking station designs. IC Role / Device Role / Timing Role: Primary shunt protector placed adjacent to Type-C connector, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping at full 40A surge - keeps PD controller within safe operating area even at 125°C ambient, unlike TVS diodes whose clamping rises >10V over same range. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal FET gate oxide and drain-source junction during 1.2/50μs surges. Use Value: Prevents permanent gate oxide breakdown or avalanche failure in load switches by holding clamping voltage well below 30V absolute maximum ratings. |
| IoT Device Power Rail Protection | Storage Device DC Power Input Protection |
Use Scenario: Securing 22V-rated DC input rails in battery-powered IoT gateways exposed to ESD during field servicing or surge coupling from nearby AC mains. IC Role / Device Role / Timing Role: Single-component solution replacing multi-device TVS+MOV stacks, reducing BOM count and PCB footprint by >60%. Use Value: 1.6×1.6mm DFN package saves board space versus discrete alternatives while delivering higher surge rating than similarly sized TVS diodes. |
Use Scenario: Protecting SATA or NVMe SSD power inputs against EOS events induced by hot-plug operations, backplane coupling, or power supply instability. IC Role / Device Role / Timing Role: Standoff protector on +22V auxiliary rail, ensuring storage controller ICs survive repeated 40A transient pulses without latch-up or parametric shift. Use Value: 130–600nA leakage at 22V enables long-term battery backup operation without excessive quiescent drain - critical for enterprise storage uptime. |
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 | Identical electrical specs, pinout, and package; JANS1N6642 is the qualified military/aerospace variant of TDS2211P per MIL-PRF-19500/632. | Qualified for extended temperature (−55°C to +150°C), enhanced screening, and radiation hardness - required for defense avionics and space-qualified systems. | Select JANS1N6642 when compliance with JAN, JANTX, or JANS level reliability testing and traceability is mandatory. |
| Littelfuse SP3022-01FTG | TVS diode (not FET-based); 24V working voltage, 33.2V clamping at 40A, 350pF capacitance, no temperature-stable clamping. | Suitable for cost-sensitive commercial USB PD designs but cannot match JANS1N6642's flat clamping curve or high-temp performance. | Choose SP3022-01FTG only if military qualification is unnecessary and 33.2V clamping is acceptable for downstream IC survival. |
Compared with TDS2211P, JANS1N6642 adds MIL-STD-883 screening and extended temperature validation without altering electrical behavior; versus SP3022-01FTG, JANS1N6642 delivers 5.7V lower clamping, 175pF vs 350pF capacitance, and stable performance across −55°C to +150°C - making it irreplaceable in mission-critical 22V rail protection.
Availability
JANS1N6642 is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and aerospace-grade power rail protection requiring stable component supply, full traceability, and extended-temperature reliability.
Supply support for JANS1N6642 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.
JANS1N6642 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, temperature stability, and surge endurance are non-negotiable.
FAQ
What is the key functional distinction between JANS1N6642 and standard TVS diodes?
JANS1N6642 uses a surge-rated FET and precision trigger circuit to achieve near-constant clamping voltage (27.5–28V) across its full 40A surge range and −55°C to +150°C operating temperature. Standard TVS diodes exhibit linear clamping rise with current and temperature due to fixed dynamic resistance - JANS1N6642 avoids this limitation entirely, delivering predictable protection margins in demanding applications.
Does JANS1N6642 require external biasing or control signals to operate?
No, JANS1N6642 is fully autonomous and requires no external power, bias, or control signals. Its internal trigger circuit activates the shunt FET automatically when input voltage exceeds the breakdown threshold (~25V), making it a plug-and-play solution for 22V rail protection without added design complexity or component count.
Can JANS1N6642 be used to protect high-speed data lines like USB SuperSpeed or PCIe?
No, JANS1N6642 is not intended for high-speed data line protection due to its 175pF junction capacitance - sufficient for VBUS power lines but too high for differential signaling integrity. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF), which complement JANS1N6642 in complete interface protection schemes.
What is the meaning of "JANS" prefix in JANS1N6642?
The "JANS" prefix denotes compliance with MIL-PRF-19500/632, indicating that JANS1N6642 has undergone rigorous military-grade screening including extended temperature cycling, hermeticity testing, radiation hardness assurance, and lot traceability - distinguishing it from commercial-grade TDS2211P while maintaining identical electrical performance and pinout.
How should JANS1N6642 be laid out on PCB to ensure optimal surge performance?
Place JANS1N6642 within 5mm of the protected connector. Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using ≥3 vias. Avoid stubs or splits - this minimizes parasitic inductance and ensures full 40A current sharing across parallel paths as validated in Semtech's layout guidelines.
JANS1N6642 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io):
- 300mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 5 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 75 V
- Capacitance @ Vr, F:
- -
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/578
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
- Operating Temperature - Junction:
- -65°C ~ 175°C
JANS1N6642 FAQ
1.How can I place an order for JANS1N6642 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N6642 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 JANS1N6642 reliable?
The price and inventory of JANS1N6642 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N6642 is usually 5 days.
3.What payment methods are accepted for JANS1N6642?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N6642 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N6642?
JANS1N6642 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N6642 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 JANS1N6642?
For technical support, including JANS1N6642 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N6642 requirements.
6.How does Aetrix verify that JANS1N6642 is sourced from the original manufacturer or authorized distributors?
All JANS1N6642 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 JANS1N6642 meets industry standards.
7.What is the process for return or replacement of JANS1N6642?
All JANS1N6642 units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N6642, 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 JANS1N6642 part is unused and in its original packaging.
Return procedure for JANS1N6642:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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