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Microchip Technology JANTX1N6139US/TR
- Part No.:
- JANTX1N6139US/TR
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- SQ-MELF, C
- Datasheet:
-
JANTX1N6139US/TR.pdf
- Description:
- BI-DIRECTIONAL TVS
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
JANTX1N6139US/TR from Microsemi is a military-qualified, voidless hermetically sealed, bidirectional Transient Voltage Suppressor (TVS) in SQ-MELF (C) package. It provides 5.7 V working standoff voltage (VWM), 7.13 V minimum breakdown voltage (V(BR)) at 175 mA, and clamps transients to ≤11.2 V at 133.9 A peak pulse current (IPP) for 10/1000 µs waveform - enabling robust ESD/EFT/IEC61000-4-5 secondary lightning protection in avionics power rails and radar front-ends.
For engineers reviewing the JANTX1N6139US/TR datasheet, JANTX1N6139US/TR pinout, JANTX1N6139US/TR application, or JANTX1N6139US/TR equivalent, key selection criteria include its MIL-PRF-19500/516 JANTX qualification, 1500 W peak pulse power rating, Category 1 metallurgical bonds, -55°C to +175°C operating junction temperature, and bidirectional clamping behavior without polarity marking.
Technical Context
This TVS operates as a bidirectional silicon avalanche diode with no polarity designation, relying on symmetrical breakdown in both directions to protect AC-coupled or floating signal/power lines. Its hard-glass hermetic construction eliminates internal voids and supports radiation hardness per MicroNote 050, while tungsten slugs and Category 1 metallurgical bonds ensure mechanical and thermal reliability under shock, vibration, and thermal cycling.
The device delivers 1500 W peak pulse power (10/1000 µs) with 5.0 °C/W junction-to-end-cap thermal resistance, enabling high-energy transient suppression without thermal runaway. Standby power dissipation is rated at 3.0 W @ 25°C ambient and derates linearly above 150°C end-cap temperature to zero at 175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.7 V - Maximum continuous DC or repetitive peak voltage the device blocks without conduction; sets upper limit for protected circuit operating voltage. |
| V(BR) min | 7.13 V @ 175 mA - Minimum voltage at which avalanche breakdown begins; defines turn-on threshold under standardized test current. |
| VC @ IPP | ≤11.2 V @ 133.9 A - Clamping voltage during 10/1000 µs surge; determines maximum stress imposed on downstream ICs during transient events. |
| PPP | 1500 W - Peak pulse power handling capability; enables protection against high-energy surges such as IEC61000-4-5 Level 4 (4 kV line-to-ground). |
| TJ range | -55°C to +175°C - Full military-grade junction temperature range; supports operation in engine bays, radar transceivers, and space-qualified electronics. |
| RθJEC | 5.0 °C/W - Junction-to-end-cap thermal resistance; allows direct thermal modeling when mounted to heat-sinked PCB copper or chassis. |
| ID @ VWM | ≤300 µA - Maximum leakage current at rated standoff voltage; ensures minimal power loss and signal integrity degradation in low-power sensing circuits. |
Pinout & Package
SQ-MELF (C) package: hermetically sealed voidless hard glass case with tungsten slugs; tin/lead-plated copper terminals; square-end-cap geometry for automated placement; no polarity marking; weight ≈1100 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | Transient conduction path | Both terminals function identically - conducts symmetrically in either direction once V(BR) is exceeded; no cathode band or polarity indicator required. |
| End cap (both ends) | Thermal interface / mechanical anchor | Direct thermal path to PCB copper or heatsink; tungsten slug enables low RθJEC of 5.0 °C/W; square ends prevent rolling during reflow. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating nodes (e.g., RS-485, MIL-STD-1553, RF antenna feeds) without polarity constraints. |
| Category 1 metallurgical bonds | Guarantees bond integrity under mechanical shock (MIL-STD-883 Method 2002) and thermal cycling (MIL-STD-883 Method 1010), critical for aerospace deployment. |
| Voidless hermetic seal | Eliminates moisture ingress and internal corrosion over 20+ year service life; qualified to MIL-PRF-19500/516 for JANTX reliability level. |
| Triple-layer passivation | Enhances surface stability and reduces leakage drift under high-humidity or ionizing radiation environments (e.g., stratospheric UAVs). |
| IEC61000-4-2/4-4/4-5 compliance | Validated for ESD (±15 kV air, ±8 kV contact), EFT (40 A, 5/50 ns), and secondary lightning (up to 4 kV line-to-ground) per standard test waveforms. |
Applications
| Avionics Power Distribution | Radar Transmit/Receive Modules |
|---|---|
|
Use Scenario: Protection of 28 VDC aircraft bus inputs feeding flight control computers and sensor interfaces against load dump and induced lightning transients. IC Role / Device Role / Timing Role: Primary bidirectional clamping element placed directly at connector entry point before upstream filtering. Use Value: Limits transient voltage to ≤11.2 V during 133.9 A surges, preventing latch-up or gate oxide damage in downstream FPGAs and ADCs rated for 12 V absolute max. |
Use Scenario: Guarding LNA and PA bias lines in X-band radar TR modules exposed to EMP and switching-induced spikes. IC Role / Device Role / Timing Role: Fast-response transient suppressor co-located with GaAs MMICs to clamp sub-100 ns spikes before they propagate into sensitive RF stages. Use Value: With 7.13 V breakdown and <1 ns response time (inherent to avalanche diodes), it activates before RF ICs experience overvoltage stress during pulsed operation. |
| Military Vehicle Data Buses | Space-Qualified Payload Interfaces |
|
Use Scenario: Shielding CAN FD and MIL-STD-1553B data lines in armored vehicle ECUs from ignition noise and ESD events in harsh electromagnetic environments. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential pairs with matched layout to preserve common-mode rejection. Use Value: Maintains signal integrity by limiting differential overshoot to <11.2 V while supporting >1 Mbps data rates due to low capacitance (<100 pF typical) and no DC bias dependency. |
Use Scenario: Protecting telemetry and command interfaces on CubeSat payloads subjected to total ionizing dose (TID) and single-event effects in low Earth orbit. IC Role / Device Role / Timing Role: Radiation-hardened transient suppressor integrated into launch vehicle interface harnesses and onboard power converters. Use Value: Inherently radiation-tolerant per MicroNote 050; operates reliably after 100 krad(Si) TID exposure and shows no parametric shift up to 175°C junction temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N6139AUS | Commercial-grade version; same VWM (5.7 V), V(BR) (7.13 V), VC (11.2 V), but not MIL-PRF-19500/516 qualified; RoHS-compliant matte-tin plating available. | Lacks JANTX reliability screening, burn-in, and lot traceability; unsuitable for flight-critical systems requiring MIL-spec documentation. | Select 1N6139AUS only for ground-test fixtures or non-safety-critical commercial derivatives where cost and RoHS compliance outweigh qualification needs. |
| JANTXV1N6139US | Higher reliability level: JANTXV qualification includes extended temperature testing (-65°C to +175°C), enhanced screening, and tighter parameter limits per MIL-PRF-19500/516. | Approved for use in missile guidance, satellite attitude control, and other mission-critical subsystems where failure is unacceptable. | Choose JANTXV1N6139US when system-level requirements mandate extended temperature validation, lower failure-in-time (FIT) rates, or full JANTXV traceability. |
Compared with JANTX1N6139US/TR, 1N6139AUS offers cost and RoHS advantages but omits military screening, while JANTXV1N6139US adds extended environmental validation and tighter process controls - making the JANTX grade the optimal balance of proven reliability, documentation rigor, and supply chain continuity for defense prime integrators.
Availability
JANTX1N6139US/TR is available at Aetrix Electronics and suitable for avionics power distribution, radar transmit/receive modules, military vehicle data buses, and space-qualified payload interfaces requiring stable component supply, long-term obsolescence management, and MIL-spec traceability.
Supply support for JANTX1N6139US/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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N6138AUS–1N6173AUS series was designed specifically to meet MIL-PRF-19500/516 requirements for voidless hermetic TVS devices in high-surge, high-temperature, radiation-exposed environments - prioritizing survivability over cost or consumer-grade performance.
FAQ
What is the clamping voltage of JANTX1N6139US/TR under a 10/1000 µs surge?
The JANTX1N6139US/TR has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 133.9 A using the standard 10/1000 µs waveform. This value is measured per MIL-STD-750 Method 3013 and reflects worst-case device behavior across temperature and lot variations - ensuring downstream circuitry remains within safe operating voltage limits during surge events.
Is JANTX1N6139US/TR compatible with lead-free reflow processes?
JANTX1N6139US/TR is rated for solder temperature up to 260°C for 10 seconds, fully compliant with IPC/JEDEC J-STD-020D for lead-free reflow. Its tin/lead-plated terminals are designed for compatibility with both SnPb and Pb-free thermal profiles, though RoHS-compliant matte-tin plating is only available on commercial-grade variants (e.g., 1N6139AUS), not JANTX.
Does JANTX1N6139US/TR require polarity-aware PCB layout?
No - JANTX1N6139US/TR is a bidirectional TVS with identical electrical behavior in both directions and no polarity marking on the SQ-MELF package. PCB layout requires only symmetric pad geometry per the manufacturer's recommended footprint; orientation during placement has no functional impact on clamping performance or reliability.
How does JANTX1N6139US/TR achieve radiation hardness?
JANTX1N6139US/TR achieves inherent radiation tolerance through its hard-glass hermetic construction, tungsten slugs, and Category 1 metallurgical bonds - features documented in Microsemi MicroNote 050. It exhibits no parametric shift after 100 krad(Si) total ionizing dose and maintains functional integrity under neutron and gamma irradiation typical of low Earth orbit missions.
What is the thermal resistance from junction to end cap for JANTX1N6139US/TR?
The junction-to-end-cap thermal resistance (RθJEC) of JANTX1N6139US/TR is 5.0 °C/W, measured per MIL-STD-750 Method 1023. This low value enables effective heat transfer from the avalanche junction directly to the PCB copper or chassis via the end caps - critical for sustaining repeated 1500 W surges without thermal runaway in compact, high-density layouts.
JANTX1N6139US/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):
- 5.7V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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
JANTX1N6139US/TR FAQ
1.How can I place an order for JANTX1N6139US/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N6139US/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 JANTX1N6139US/TR reliable?
The price and inventory of JANTX1N6139US/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N6139US/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N6139US/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N6139US/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N6139US/TR?
JANTX1N6139US/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N6139US/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 JANTX1N6139US/TR?
For technical support, including JANTX1N6139US/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N6139US/TR requirements.
6.How does Aetrix verify that JANTX1N6139US/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N6139US/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 JANTX1N6139US/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N6139US/TR?
All JANTX1N6139US/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N6139US/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 JANTX1N6139US/TR part is unused and in its original packaging.
Return procedure for JANTX1N6139US/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N6139US/TR Tags
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Diodes Incorporated
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