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Microchip Technology JANTX1N6145US/TR
- Part No.:
- JANTX1N6145US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANTX1N6145US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,464
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Product details
Overview
JANTX1N6145US/TR from Microsemi is a military-qualified, voidless hermetically sealed bidirectional Transient Voltage Suppressor (TVS) in SQ-MELF (C) package, with 9.9 V working standoff voltage (VWM), 12.35 V minimum breakdown voltage (V(BR)), and 18.2 V clamping voltage (VC) at 82.4 A peak pulse current (IPP) for 10/1000 µs waveform - deployed in avionics power rail protection and radar front-end surge suppression.
For engineers reviewing the JANTX1N6145US/TR datasheet, JANTX1N6145US/TR pinout, JANTX1N6145US/TR application, or JANTX1N6145US/TR equivalent, key selection criteria include MIL-PRF-19500/516 JANTX qualification, 1500 W peak pulse power rating, bidirectional clamping behavior, -55°C to +175°C operating junction temperature, and compatibility with high-reliability PCB layouts requiring hermetic glass packaging and Category 1 metallurgical bonds.
Technical Context
This device operates as a bidirectional voltage-clamping protector with no polarity marking, leveraging hard-glass construction and internal tungsten slugs for thermal robustness. Its clamping action begins at V(BR) ≥12.35 V (tested at 100 mA), holds VWM ≤9.9 V, and delivers VC = 18.2 V under 82.4 A transient surge - meeting IEC61000-4-2/4-4/4-5 for ESD, EFT, and lightning-induced surge immunity.
Thermal management relies on RθJEC = 5.0 °C/W junction-to-end-cap resistance and linear derating of off-state power above 150 °C end-cap temperature. It sustains 5.0 W steady-state dissipation up to TEC = 150 °C and exhibits αV(BR) = 0.08 %/°C temperature coefficient - critical for stable clamping across extended military temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.9 V maximum continuous standoff voltage - defines max DC/repetitive peak voltage before leakage exceeds 20 µA |
| V(BR) min | 12.35 V at 100 mA - guaranteed avalanche onset threshold ensuring predictable turn-on during transients |
| VC @ IPP | 18.2 V at 82.4 A (10/1000 µs) - limits downstream circuit voltage during worst-case surge events |
| PPP | 1500 W peak pulse power - supports high-energy transients without degradation in qualified military environments |
| TJ range | -55°C to +175°C - enables operation in engine bay, space-grade, and airborne systems with extreme thermal cycling |
| RθJEC | 5.0 °C/W - enables direct thermal coupling to copper pads or heatsinks via end-cap mounting |
| ID @ VWM | ≤20 µA - ensures negligible standby current draw in always-on military subsystems |
Pinout & Package
Package: SQ-MELF (C) - hermetically sealed voidless hard-glass case with tin/lead-plated copper terminals; square-end-cap geometry for automated placement and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/End Cap A | Transient current entry point (bidirectional) | Either end cap serves as current entry during positive or negative transients - no polarity marking required |
| Cathode/End Cap B | Transient current exit point (bidirectional) | Paired with Anode/End Cap A to form symmetric clamping path - identical electrical role in reverse polarity events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal/power lines without polarity concerns |
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination - essential for 20+ year field life in sealed avionics enclosures |
| Category 1 metallurgical bonds | Guarantees bond integrity under shock/vibration per MIL-STD-883, preventing interfacial failure in launch or flight environments |
| MIL-PRF-19500/516 JANTX qualification | Validates screening, testing, and traceability to military reliability standards - required for DoD procurement |
Applications
| Avionics Power Distribution | Radar RF Front-End Protection |
|---|---|
Use Scenario: Protecting 28 V DC bus inputs in flight control computers from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt surges before they reach DC-DC converters. Use Value: Limits transient overvoltage to ≤18.2 V while sustaining 1500 W peak power - preserving downstream FPGAs and ADCs rated for 3.3 V/5 V logic rails. | Use Scenario: Shielding LNA inputs in X-band radar receivers from ESD events during antenna handling and lightning-induced coupling. IC Role / Device Role / Timing Role: Low-capacitance (<10 pF typical), fast-response clamping diode mounted adjacent to RF connector to minimize stub length. Use Value: Clamps ESD pulses per IEC61000-4-2 Level 4 (15 kV air/8 kV contact) without degrading RF insertion loss or noise figure. |
| Tactical Vehicle Communication Systems | Spacecraft Power Interface Modules |
Use Scenario: Safeguarding CAN bus transceivers and microcontrollers in armored vehicle command networks exposed to EMP and ignition noise. IC Role / Device Role / Timing Role: Standoff-voltage-matched TVS (VWM = 9.9 V) placed on each CAN_H/CAN_L line to suppress common-mode transients. Use Value: Maintains <20 µA leakage at 9.9 V - avoids false triggering of CAN receivers while clamping 10/1000 µs surges to safe levels. | Use Scenario: Protecting solar array regulator inputs in low-earth-orbit satellites subject to single-event burnout and total ionizing dose effects. IC Role / Device Role / Timing Role: Radiation-hardened (per MicroNote 050), hermetically sealed TVS used in primary power conditioning stage. Use Value: Withstands >100 krad(Si) TID and exhibits no parametric shift after proton irradiation - enabling long-duration mission reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTX1N6144US/TR | VWM = 9.1 V, V(BR) min = 11.40 V, VC = 16.9 V @ 88.8 A - lower clamping voltage but reduced standoff margin | Better suited for 9 V nominal systems where tighter VWM headroom is acceptable | Select when system operating voltage is ≤9 V and lower VC is prioritized over margin against overvoltage drift |
| JANTX1N6146US/TR | VWM = 11.4 V, V(BR) min = 14.25 V, VC = 21.0 V @ 71.4 A - higher standoff but elevated clamping voltage | Preferred for 12 V automotive-derived subsystems needing wider VWM tolerance | Choose when protecting circuits with 12 V nominal rails and higher transient energy tolerance is required |
Compared with JANTX1N6145US/TR, JANTX1N6144US/TR offers lower clamping voltage at the cost of reduced VWM margin, while JANTX1N6146US/TR increases standoff capability but raises VC - making JANTX1N6145US/TR the optimal balance for 10 V-class avionics and radar interfaces requiring both margin and clamping precision.
Availability
JANTX1N6145US/TR is available at Aetrix Electronics and suitable for avionics power distribution, radar RF front-end protection, tactical vehicle communication systems, and spacecraft power interface modules requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N6145US/TR 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 Corporation (now part of Microchip Technology) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, with emphasis on radiation-hardened, hermetic, and military-qualified components.
The JANTX1N6145US/TR belongs to Microsemi's MIL-PRF-19500/516-qualified TVS family, engineered specifically for mission-critical surge protection in environments where failure is not an option - including airborne, space, and ground-mobile platforms.
FAQ
What is the clamping voltage of JANTX1N6145US/TR under standard test conditions?
JANTX1N6145US/TR has a maximum clamping voltage (VC) of 18.2 V when subjected to an 82.4 A peak pulse current with a 10/1000 µs waveform. This value is measured per MIL-PRF-19500/516 test methods and ensures predictable voltage limiting during surge events. The JANTX1N6145US/TR maintains this clamping performance across its full -55°C to +175°C operating junction temperature range, supporting deployment in extreme environmental conditions.
Is JANTX1N6145US/TR compatible with lead-free reflow processes?
JANTX1N6145US/TR is qualified for solder reflow at 260°C for 10 seconds, matching standard lead-free process profiles. Its tin/lead-plated copper terminals are designed for compatibility with both SnPb and Pb-free assembly, though RoHS compliance is limited to commercial-grade versions - the JANTX variant retains traditional termination for legacy military manufacturing requirements. Always verify board-level thermal profiling to avoid exceeding the 260°C limit.
Does JANTX1N6145US/TR require polarity-aware PCB layout?
No - JANTX1N6145US/TR is a bidirectional TVS with no polarity marking and symmetric terminal construction, meaning either end cap functions identically as anode or cathode depending on transient polarity. This eliminates orientation constraints during automated placement and simplifies layout for differential or AC-coupled lines. The JANTX1N6145US/TR datasheet explicitly states "no polarity marking for these bidirectional TVSs", confirming its use without directional routing considerations.
How does JANTX1N6145US/TR meet MIL-PRF-19500/516 qualification requirements?
JANTX1N6145US/TR meets MIL-PRF-19500/516 through full-screening per JANTX level: including temperature cycling, hermeticity testing, burn-in, and parameter verification across -55°C to +175°C. It uses voidless hermetic glass packaging and Category 1 metallurgical bonds - both mandated by the spec - and is lot-certified with traceable test data. The JANTX1N6145US/TR designation itself confirms formal qualification status, not just compliance intent.
What is the maximum steady-state power dissipation for JANTX1N6145US/TR at ambient temperature?
JANTX1N6145US/TR is rated for 3.0 W steady-state power dissipation at TA = 25°C, with linear derating to zero at TA = 150°C per Figure 4 in the official datasheet. This rating assumes adequate PCB copper area for thermal conduction; actual usable power depends on layout-dependent thermal resistance. For JANTX1N6145US/TR, the 5.0 °C/W junction-to-end-cap resistance allows effective heat transfer when mounted to thermally enhanced pads - critical for sustained operation in enclosed avionics enclosures.
JANTX1N6145US/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- SQ-MELF, C
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9.9V
- Voltage - Breakdown (Min):
- 12.35V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 82.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/516
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- C, SQ-MELF
JANTX1N6145US/TR FAQ
1.How can I place an order for JANTX1N6145US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6145US/TR 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 JANTX1N6145US/TR reliable?
The price and inventory of JANTX1N6145US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6145US/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N6145US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N6145US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N6145US/TR?
JANTX1N6145US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6145US/TR 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 JANTX1N6145US/TR?
For technical support, including JANTX1N6145US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6145US/TR requirements.
6.How does Aetrix verify that JANTX1N6145US/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N6145US/TR 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 JANTX1N6145US/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N6145US/TR?
All JANTX1N6145US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6145US/TR, 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 JANTX1N6145US/TR part is unused and in its original packaging.
Return procedure for JANTX1N6145US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N6145US/TR Tags
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