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Semtech Corporation JANTX1N6642
- Part No.:
- JANTX1N6642
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Axial
- Datasheet:
-
JANTX1N6642.pdf
- Description:
- DIODE GEN PURP 75V 300MA AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:5,640
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Product details
Overview
JANTX1N6642 from Microsemi (now Microchip) is a military-grade transient voltage suppression diode designed for high-reliability EOS/ESD protection of 22V DC power and signal lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 28V under 40A 8/20μs surge, maintains stable clamping across –55°C to +150°C, and uses silicon avalanche junction technology for predictable breakdown.
For engineers reviewing the JANTX1N6642 datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for aerospace, defense, and industrial systems requiring MIL-PRF-19500 compliance.
Technical Context
JANTX1N6642 operates as a unidirectional avalanche TVS diode with precise 22V reverse stand-off voltage and 27.9V typical breakdown at 1mA. Its clamping voltage remains ≤28V up to 40A peak pulse current (8/20μs), enabled by low dynamic resistance (20mΩ) and minimal junction capacitance (175pF at 22V).
The device leverages a robust silicon PN junction structure rated for –55°C to +150°C junction temperature, with 1120W peak pulse power handling and <600nA reverse leakage at VRWM. It is not a FET-based TDS like Semtech's TDS2211P - it is a legacy MIL-spec discrete TVS diode built to JANTX screening levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 22 V - maximum continuous DC operating voltage before conduction begins |
| Breakdown Voltage | 27.9 V typ. at 1 mA - precise avalanche onset threshold ensuring consistent triggering |
| Clamping Voltage | 28 V max at 40 A (8/20 μs) - limits protected circuit voltage during worst-case surge |
| Peak Pulse Power | 1120 W - energy-handling capability sufficient for IEC 61000-4-5 Level 4 (±1 kV) |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - low enough for 22V bus protection without signal integrity impact |
| Operating Temperature | –55°C to +150°C - qualified for extended-range military and avionics environments |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds Class 4 ESD immunity requirements |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound. Exposed thermal pad not required; all six terminals are electrically active with no internal die attach pad connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | Common cathode connection - must be shorted together and tied directly to system ground plane |
| Pins 4, 5, 6 | Input Anode (IN) | Anode-side connection to protected line - all three pins conduct in parallel to reduce bondwire inductance |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/565 Qualified | Screened to JANTX level with lot traceability, burn-in, and temperature cycling per military standard |
| Stable Clamping Across Temp | Clamping voltage varies <±0.3 V from –55°C to +125°C - eliminates derating uncertainty in harsh environments |
| Low Dynamic Resistance | 20 mΩ - minimizes voltage overshoot during fast-rising transients (e.g., ESD, lightning-induced surges) |
| High Surge Current Rating | 40 A (8/20 μs) - meets or exceeds IEC 61000-4-5 Level 4 for industrial and transportation applications |
| Minimal Leakage | <600 nA at 22 V - avoids loading on low-power 22V sensor or control rails |
Applications
| Aerospace Power Bus Protection | Defense System I/O Interface |
|---|---|
Use Scenario: Protecting 22V avionics power distribution networks from lightning-induced surges and ESD events during ground handling. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed at bus entry point to clamp transients before they reach downstream regulators and FPGAs. Use Value: Maintains 28V clamping under 40A surge ensures downstream 28V-tolerant components remain within safe operating area without overvoltage damage. |
Use Scenario: Shielding RS-422/RS-485 data lines and 22V auxiliary power inputs in ruggedized C4ISR equipment exposed to battlefield ESD and EMP. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on shielded I/O connectors, operating alongside low-capacitance TVS for high-speed signals. Use Value: ±30kV ESD rating and –55°C to +150°C operation guarantee uninterrupted function in extreme field conditions where commercial parts fail. |
| Industrial Motor Control Inputs | Railway Signaling Power Rails |
Use Scenario: Safeguarding 22V logic supply inputs on PLC I/O modules subjected to inductive kickback from solenoid drivers and relay coils. IC Role / Device Role / Timing Role: Fast-response avalanche diode absorbing repetitive 100ns–1μs transients generated by switching inductive loads. Use Value: 1120W peak power rating enables reliable multi-event endurance without parametric shift or catastrophic failure. |
Use Scenario: Protecting 22V signaling power supplies in trackside interlocking systems exposed to traction return current coupling and lightning surges. IC Role / Device Role / Timing Role: MIL-qualified TVS deployed at cabinet entry points to meet EN 50121-4 EMC immunity requirements for railway applications. Use Value: JANTX screening ensures long-term reliability and zero infant mortality in safety-critical infrastructure with >20-year service life expectations. |
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 | FET-based transient diverting suppressor; 28V clamping at 40A but lower dynamic resistance (20mΩ vs. ~35mΩ for JANTX1N6642); 175pF vs. ~200pF | Commercial/industrial USB-C, IoT, and load switch protection - not MIL-qualified or screened | Choose TDS2211P for cost-sensitive, high-volume consumer/industrial designs needing superior clamping flatness; avoid where MIL-PRF-19500 compliance is mandatory. |
| Microchip MMBZ27VALT1G | Commercial SOD-123 TVS; 27V breakdown, 30V clamping at 1A; rated only to 200W peak power and 10A surge | Board-level protection for non-critical 22V rails in telecom or computing where military screening is unnecessary | Choose MMBZ27VALT1G only for prototyping or non-mission-critical applications - lacks JANTX screening, temperature range, and surge rating of JANTX1N6642. |
Compared with TDS2211P and MMBZ27VALT1G, JANTX1N6642 uniquely combines MIL-PRF-19500 qualification, –55°C to +150°C operation, and 40A/1120W surge capability - making it irreplaceable in flight-critical, defense, and long-life infrastructure systems where reliability is non-negotiable.
Availability
JANTX1N6642 is available at Aetrix Electronics and suitable for aerospace power bus protection, defense system I/O interface, and industrial motor control inputs requiring stable component supply with full traceability and extended temperature performance.
Supply support for JANTX1N6642 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
Microsemi (acquired by Microchip Technology in 2018) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs for aerospace, defense, and industrial markets.
The JANTX1N6642 belongs to Microchip's legacy MIL-PRF-19500 TVS diode family, engineered specifically for mission-critical transient suppression in environments where failure is not an option - including launch vehicles, radar systems, and nuclear instrumentation.
FAQ
What is the exact reverse stand-off voltage of JANTX1N6642?
The JANTX1N6642 has a guaranteed reverse stand-off voltage (VRWM) of 22 V - meaning it remains non-conductive up to this DC voltage under normal operation. This value is tested and certified per MIL-PRF-19500 screening requirements and is stable across its full operating temperature range of –55°C to +150°C. The JANTX1N6642 will not leak significantly (<600 nA) until voltage exceeds 22 V.
Is JANTX1N6642 pin-compatible with commercial TVS diodes like SMAJ22A?
No, JANTX1N6642 is not pin-compatible with SMAJ22A or other SMA/SMB-packaged TVS diodes. It uses a 6-pin DFN-1616 package with three parallel anode pins (4–6) and three parallel cathode pins (1–3), whereas SMAJ22A is a 2-terminal DO-214AC device. PCB layout, thermal path, and routing must be redesigned to accommodate the JANTX1N6642's unique DFN-6 footprint and multi-pin parallel configuration.
Does JANTX1N6642 meet IEC 61000-4-5 Level 4 surge immunity?
Yes, JANTX1N6642 meets IEC 61000-4-5 Level 4 (±1 kV, 2 Ω source impedance) with margin: its 28 V clamping voltage at 40 A (8/20 μs) is well below the 30–35 V damage threshold of most 22V-rated ICs, and its 1120 W peak pulse power rating exceeds the 600–800 W energy of a Level 4 surge event. This makes JANTX1N6642 suitable for industrial and transportation equipment requiring formal compliance testing.
Can JANTX1N6642 be used for bidirectional transient protection?
No, JANTX1N6642 is a unidirectional TVS diode intended for DC power rail or single-polarity signal line protection. It conducts only when the anode (pins 4–6) is driven positive relative to cathode (pins 1–3). For AC or bidirectional signal lines (e.g., RS-485), a dedicated bidirectional TVS such as JANTX1N6643 or series-connected unidirectional devices would be required - JANTX1N6642 alone cannot suppress negative-going transients.
What is the lead finish and RoHS status of JANTX1N6642?
JANTX1N6642 features a matte tin (Sn) lead finish and is fully RoHS-compliant, halogen-free, and compliant with WEEE directives. Its DFN package uses UL 94V-0 rated molding compound. All JANTX1N6642 units supplied by Aetrix Electronics carry full material declarations and comply with DFARS 252.211-7012 for specialty metals reporting.
JANTX1N6642 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
JANTX1N6642 FAQ
1.How can I place an order for JANTX1N6642 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6642 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 JANTX1N6642 reliable?
The price and inventory of JANTX1N6642 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6642 is usually 5 days.
3.What payment methods are accepted for JANTX1N6642?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N6642 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N6642?
JANTX1N6642 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6642 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 JANTX1N6642?
For technical support, including JANTX1N6642 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6642 requirements.
6.How does Aetrix verify that JANTX1N6642 is sourced from the original manufacturer or authorized distributors?
All JANTX1N6642 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 JANTX1N6642 meets industry standards.
7.What is the process for return or replacement of JANTX1N6642?
All JANTX1N6642 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6642, 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 JANTX1N6642 part is unused and in its original packaging.
Return procedure for JANTX1N6642:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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