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Microchip Technology JANTX1N4986DUS/TR
- Part No.:
- JANTX1N4986DUS/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- SQ-MELF, E
- Datasheet:
-
JANTX1N4986DUS/TR.pdf
- Description:
- DIODE ZENER 150V 5W E-MELF
- Quantity:
- Payment:
- Shipping:
Inventory:8,529
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Product details
Overview
JANTX1N4986DUS/TR from Microsemi is a military-qualified, voidless hermetically sealed surface-mount 5 W Zener diode with nominal Zener voltage of 150 V, ±1% tolerance (D suffix), and 1.4 A maximum continuous Zener current. It operates from –65 °C to +175 °C and is used for precision voltage regulation in high-reliability aerospace power conditioning circuits.
For engineers reviewing the JANTX1N4986DUS/TR datasheet, JANTX1N4986DUS/TR pinout, JANTX1N4986DUS/TR application, or JANTX1N4986DUS/TR equivalent, key selection criteria include its MIL-PRF-19500/356 qualification, 150 V regulation at 12 mA test current, 330 Ω dynamic impedance, and radiation-hardened voidless-glass construction suitable for mission-critical analog reference and overvoltage clamp functions.
Technical Context
This device belongs to the JANTX-grade 1N49xxUS series, featuring Category I internal metallurgical bonds and triple-layer passivation for enhanced reliability. Its Zener breakdown mechanism delivers stable regulation across wide temperature and current ranges, with thermal resistance of 10 °C/W junction-to-end-cap.
The 150 V nominal Zener voltage is specified at IZT = 12 mA, with ΔVZ ≤ 8.0 V between 10% and 50% of IZM. Reverse leakage is limited to 2 μA at 114 V, and forward voltage is 1.50 V at 1.0 A - confirming robust bidirectional surge handling capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 150 V at 12 mA test current - defines primary regulation point for precision reference design |
| Zener Tolerance | ±1% (D suffix) - enables tight-voltage-margin systems without post-calibration |
| Power Dissipation | 5 W @ TEC = 125 °C - supports high-stability operation in conduction-cooled avionics enclosures |
| Dynamic Impedance | 330 Ω at IZT - determines output voltage variation under load transients |
| Max Continuous Current | 1.4 A - sets upper limit for sustained clamping or shunt-regulation duty cycles |
| Operating Temperature | –65 °C to +175 °C - validated for extended-range flight control and engine monitoring electronics |
| Thermal Resistance | 10 °C/W junction-to-end-cap - informs heatsinking requirements for PCB copper pour design |
Pinout & Package
Package: Hermetically sealed voidless hard glass case with tungsten slugs, "E" package (also designated D-5B), surface-mount configuration with copper end caps and Sn/Pb finish. Cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to system ground or lowest potential node during Zener operation |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated rail or overvoltage protection node; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| Voidless hermetic glass seal | Eliminates moisture ingress and internal delamination risk in vacuum or high-humidity environments |
| Category I metallurgical bond | Ensures mechanical integrity under shock/vibration per MIL-STD-883 Method 2002 |
| Triple-layer passivation | Prevents surface conduction paths and leakage drift during long-term bias stress |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per MicroNote 050 - suitable for LEO spacecraft |
| ESD immunity | Qualified to MIL-STD-750 Method 1020 - withstands >4 kV HBM without parameter shift |
Applications
| Aerospace Power Bus Clamp | Avionics Reference Voltage Source |
|---|---|
Use Scenario: Clamping transient spikes on 28 V DC aircraft bus during load dump or generator switching. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown as shunt overvoltage protector. Use Value: 150 V standoff prevents false triggering while 5 W rating absorbs 8.3 ms surges up to 1.4 A without degradation. |
Use Scenario: Providing stable 150 V reference for analog-to-digital conversion in flight data recorders. IC Role / Device Role / Timing Role: Precision voltage reference element in ratiometric sensor excitation circuitry. Use Value: ±1% tolerance and <0.1%/°C tempco enable sub-0.5% full-scale error over –55 °C to +125 °C operating range. |
| Satellite Power Converter Feedback | Military Radar Bias Supply |
Use Scenario: Stabilizing secondary-side feedback voltage in isolated DC-DC converters for satellite payloads. IC Role / Device Role / Timing Role: Zener regulator establishing fixed reference for optocoupler-based error amplification. Use Value: Radiation hardness and –65 °C to +175 °C operation ensure uninterrupted regulation in geosynchronous orbit thermal cycling. |
Use Scenario: Generating stable high-voltage bias for GaN RF amplifier stages in ground-based radar transmitters. IC Role / Device Role / Timing Role: High-voltage Zener shunt regulator maintaining constant drain supply under pulsed RF load. Use Value: 330 Ω dynamic impedance minimizes ripple coupling into sensitive RF bias rails during 1 kHz–10 MHz modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4986DUS/TR | Higher screening level (JANTXV vs JANTX); tighter lot acceptance testing per MIL-PRF-19500/356 | Required for Class S spaceflight hardware where single-event burnout (SEB) margin is critical | Select when mission assurance level exceeds standard JANTX; same electrical specs and footprint |
| 1N4986DUS/TR | Commercial-grade version; no MIL-PRF-19500 qualification; wider temp range not guaranteed | Suitable only for non-mission-critical industrial controls with ambient temp < +105 °C | Use only if radiation tolerance, ESD immunity, and extended temperature operation are not required |
Compared with JANTX1N4986DUS/TR, JANTXV1N4986DUS/TR adds process-level radiation validation and tighter parametric screening, while 1N4986DUS/TR omits military qualification entirely - making the JANTX grade the optimal balance of assured reliability and cost for defense avionics.
Availability
JANTX1N4986DUS/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, avionics reference design, and military radar bias supply requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4986DUS/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 (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.
JANTX1N4986DUS/TR belongs to Microsemi's legacy MIL-PRF-19500/356 qualified Zener diode product line, engineered specifically for voltage regulation in mission-critical systems where failure is not an option.
FAQ
What is the Zener voltage tolerance of JANTX1N4986DUS/TR?
JANTX1N4986DUS/TR has a nominal Zener voltage of 150 V with ±1% tolerance, indicated by the "D" suffix in the part number. This tight tolerance is verified per MIL-PRF-19500/356 screening and ensures minimal calibration overhead in precision reference designs where JANTX1N4986DUS/TR is deployed.
Is JANTX1N4986DUS/TR suitable for space applications?
Yes - JANTX1N4986DUS/TR is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to MIL-PRF-19500/356. Its voidless hermetic glass construction and Category I metallurgical bond make JANTX1N4986DUS/TR appropriate for low-Earth orbit missions where total ionizing dose and single-event effects must be mitigated.
What is the maximum surge current rating for JANTX1N4986DUS/TR?
JANTX1N4986DUS/TR supports a nonrepetitive peak Zener surge current (IZSM) of 1.4 A for an 8.3 ms square wave, as specified in the electrical characteristics table. This rating reflects the device's ability to absorb transient energy without degradation - a key parameter when using JANTX1N4986DUS/TR in load-dump protection circuits.
Does JANTX1N4986DUS/TR require derating above 125°C?
Yes - JANTX1N4986DUS/TR is rated for 5 W dissipation at TEC = 125 °C and must be linearly derated to zero at 175 °C. The thermal resistance is 10 °C/W junction-to-end-cap, so designers must calculate board-level thermal impedance to ensure JANTX1N4986DUS/TR remains within safe operating limits under worst-case ambient and power conditions.
How is polarity identified on JANTX1N4986DUS/TR?
JANTX1N4986DUS/TR uses a cathode band marking on the glass body to indicate polarity. The banded end is the cathode, which connects to the higher-potential node during Zener operation. This marking is visible under standard optical inspection and aligns with JEDEC-standard orientation for surface-mount Zener diodes like JANTX1N4986DUS/TR.
JANTX1N4986DUS/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SQ-MELF, E
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 150 V
- Tolerance:
- ±1%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 330 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 114 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 1 A
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/356
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- E-MELF
JANTX1N4986DUS/TR FAQ
1.How can I place an order for JANTX1N4986DUS/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4986DUS/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 JANTX1N4986DUS/TR reliable?
The price and inventory of JANTX1N4986DUS/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4986DUS/TR is usually 5 days.
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5.How can I obtain technical support or documentation for JANTX1N4986DUS/TR?
For technical support, including JANTX1N4986DUS/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4986DUS/TR requirements.
6.How does Aetrix verify that JANTX1N4986DUS/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4986DUS/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 JANTX1N4986DUS/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4986DUS/TR?
All JANTX1N4986DUS/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4986DUS/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 JANTX1N4986DUS/TR part is unused and in its original packaging.
Return procedure for JANTX1N4986DUS/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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