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Microchip Technology JANTX1N4112C-1/TR
- Part No.:
- JANTX1N4112C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4112C-1/TR.pdf
- Description:
- DIODE ZENER 18V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,299
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Product details
Overview
JANTX1N4112C-1/TR from Microsemi is a 500 mW, 18.0 V ±2% tolerance Zener diode in DO-35 glass package, metallurgically bonded for high-reliability voltage regulation in aerospace and defense systems, operating from -65°C to +175°C with 100 Ω dynamic impedance at 250 mA test current.
For engineers reviewing the JANTX1N4112C-1/TR datasheet, JANTX1N4112C-1/TR pinout, JANTX1N4112C-1/TR application, or JANTX1N4112C-1/TR equivalent, this page delivers verified MIL-PRF-19500/435 qualified parameters, thermal derating behavior, noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and RoHS-compliant plating options for high-stability analog reference and power-supply feedback design.
Technical Context
This device functions as a precision shunt voltage regulator with a nominal Zener voltage of 18.0 V at 250 mA test current (IZT), exhibiting 100 Ω dynamic impedance (ZZT) and low reverse leakage (≤0.05 µA at 14.4 V). Its metallurgical bond construction ensures stable operation under thermal cycling and radiation exposure.
The JANTX1N4112C-1/TR is rated for 500 mW average power dissipation at 25°C lead temperature, linearly derated to zero at 175°C, with junction-to-ambient thermal resistance of 300°C/W on standard FR4 board layout and 250°C/W at 10 mm lead length - critical for thermal management in sealed or high-temperature enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.0 V ±2% at 250 mA - enables precise 18 V rail regulation with tight tolerance for reference-sensitive circuits. |
| Power Dissipation | 500 mW at 25°C, derated linearly to zero at 175°C - defines maximum continuous thermal load without heatsinking. |
| Dynamic Impedance | 100 Ω at IZT = 250 mA - determines output voltage stability under varying load current. |
| Reverse Leakage | ≤0.05 µA at VR = 14.4 V - ensures minimal error current in high-impedance bias networks. |
| Noise Density | 1 µV/√Hz at 25°C - supports low-noise analog references in precision instrumentation. |
| Temp. Coefficient | +0.090 %/°C - quantifies voltage drift over temperature for system-level calibration planning. |
| Junction Temp. Range | -65°C to +175°C - qualifies for extended-range military, avionics, and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode indicated by band; banded end operated positive for Zener regulation; weight ≈ 0.2 g; lead finish: tin-lead or RoHS-compliant matte tin (commercial grade only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes return path for Zener current during regulation. |
| Cathode (banded end) | Regulated output node | Supplies stable 18.0 V when reverse-biased; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 Qualified (JANTX) | Meets Level II reliability requirements for aerospace and defense deployments including vibration, shock, and burn-in screening. |
| Metallurgical Bond Construction | Eliminates interfacial delamination risk under thermal stress, ensuring long-term parameter stability in cyclic environments. |
| Low Noise Density (1 µV/√Hz) | Enables use in ultra-low-noise voltage references for ADC/DAC biasing and sensor excitation circuits. |
| Hermetic Glass Encapsulation | Prevents moisture ingress and parameter shift over decades - critical for mission-critical and space-grade applications. |
| ESD Immunity (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without degradation - simplifies handling and assembly in production environments. |
Applications
| Avionics Power Monitoring | Satellite Bus Voltage Reference |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in flight control computers using resistive divider into ADC input. IC Role / Device Role / Timing Role: Precision shunt reference providing stable 18 V reference point for ratiometric scaling. Use Value: ±2% tolerance and +0.090 %/°C TC ensure <±0.5% total error across -55°C to +125°C operational range. | Use Scenario: Generating stable bias voltage for radiation-hardened op-amps in satellite telemetry conditioning circuits. IC Role / Device Role / Timing Role: Low-noise (1 µV/√Hz), radiation-inherent Zener reference source. Use Value: Metallurgical bond and hermetic seal maintain regulation accuracy after 100 krad(Si) TID exposure. |
| Downhole Oilfield Sensor Bias | Military Radar RF Amplifier Bias |
Use Scenario: Providing regulated bias to piezoresistive pressure transducers in high-temperature wellhead electronics (175°C ambient). IC Role / Device Role / Timing Role: High-temperature Zener regulator maintaining 18 V despite extreme thermal gradients. Use Value: Full -65°C to +175°C junction rating and 250°C/W RθJL enable direct mounting without external heatsink. | Use Scenario: Stabilizing gate voltage for GaN RF power amplifiers in pulsed radar transmitters. IC Role / Device Role / Timing Role: Fast-response shunt regulator absorbing transient overvoltage spikes during switching events. Use Value: 100 Ω ZZT and 500 mW power rating suppress voltage excursions within 100 ns response window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4112US-1 | Same 18 V ±2% spec, but in DO-213AA surface-mount package; no axial leads; 250°C/W RθJL not specified. | Used where PCB real estate or automated assembly requires SMT; unsuitable for through-hole or wire-wrap prototyping. | Select when board-level automation and reflow compatibility are required over manual repair or high-vibration mechanical retention. |
| JANTXV1N4112C-1 | Identical electrical specs, but qualified to JANTXV level per MIL-PRF-19500/435 - includes additional screening (e.g., 100% life test, enhanced lot traceability). | Required for Class V spaceflight or nuclear command systems where failure modes demand highest reliability assurance. | Select when program-level qualification mandates JANTXV-level screening beyond JANTX baseline. |
Compared with JANTX1N4112C-1/TR, the 1N4112US-1 offers SMT integration at the cost of mechanical robustness and thermal path definition, while JANTXV1N4112C-1 adds screening rigor without altering regulation performance - enabling tiered selection based on reliability grade and assembly method.
Availability
JANTX1N4112C-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite bus voltage reference, and downhole oilfield sensor bias requiring stable component supply across extended temperature ranges and long lifecycle programs.
Supply support for JANTX1N4112C-1/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.
The JANTX1N4112C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment systems where parameter stability, radiation tolerance, and long-term hermetic integrity are non-negotiable.
FAQ
What is the Zener voltage tolerance and test current for JANTX1N4112C-1/TR?
JANTX1N4112C-1/TR has a nominal Zener voltage of 18.0 V with ±2% tolerance (denoted by "C" in the part number), measured at a Zener test current (IZT) of 250 mA. This tolerance ensures predictable regulation in high-reliability feedback loops where tight voltage setpoints are required.
Does JANTX1N4112C-1/TR meet military specifications?
Yes, JANTX1N4112C-1/TR is qualified per MIL-PRF-19500/435 at the JANTX reliability level, including environmental screening for temperature cycling, mechanical shock, and burn-in - making it suitable for deployed military platforms and certified aerospace subsystems.
What is the maximum reverse leakage current for JANTX1N4112C-1/TR?
JANTX1N4112C-1/TR specifies a maximum reverse leakage current (IR) of ≤0.05 µA at VR = 14.4 V (80% of VZ), confirming minimal parasitic current draw in high-impedance reference networks and ensuring accuracy in precision analog circuits.
How does the thermal derating of JANTX1N4112C-1/TR work?
JANTX1N4112C-1/TR provides 500 mW power dissipation at 25°C lead temperature, linearly derated to zero at 175°C. For ambient conditions on a typical FR4 board, derating begins at 25°C - meaning usable power drops to ~375 mW at 62.5°C and fully de-rates above 175°C junction temperature.
Is JANTX1N4112C-1/TR RoHS compliant?
No - JANTX1N4112C-1/TR uses traditional tin-lead plating per MIL-STD-750 and is not RoHS compliant; RoHS-compliant versions (e3 suffix) are available only in commercial-grade variants (e.g., 1N4112C-1e3), not JANTX-level qualified parts.
JANTX1N4112C-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 13.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4112C-1/TR FAQ
1.How can I place an order for JANTX1N4112C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4112C-1/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 JANTX1N4112C-1/TR reliable?
The price and inventory of JANTX1N4112C-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4112C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4112C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4112C-1/TR transactions.
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JANTX1N4112C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4112C-1/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 JANTX1N4112C-1/TR?
For technical support, including JANTX1N4112C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4112C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4112C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4112C-1/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 JANTX1N4112C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4112C-1/TR?
All JANTX1N4112C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4112C-1/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 JANTX1N4112C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4112C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4112C-1/TR Tags
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