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Microchip Technology JANTXV1N4112D-1/TR
- Part No.:
- JANTXV1N4112D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTXV1N4112D-1/TR.pdf
- Description:
- DIODE ZENER 18V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,090
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Product details
Overview
JANTXV1N4112D-1/TR from Microsemi is a 18.0 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTXV level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTXV1N4112D-1/TR datasheet, JANTXV1N4112D-1/TR pinout, JANTXV1N4112D-1/TR application, or JANTXV1N4112D-1/TR equivalent, key selection criteria include Zener voltage accuracy (±1%), low noise density (1 µV/√Hz), radiation hardness, hermetic glass sealing, and military-grade thermal derating performance up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 18.0 V at 250 mA test current, exhibiting a dynamic impedance of 100 Ω and temperature coefficient of +0.090 %/°C. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for high-reliability environments, JANTXV1N4112D-1/TR maintains regulation across wide current ranges (IZK to IZM = 13.7 mA to 40 mA) and supports operation from –65 °C to +175 °C junction temperature, with thermal resistance junction-to-lead rated at 250 °C/W for 3/8″ lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 18.0 V ±1% at 250 mA - enables precise reference generation in regulated power supplies requiring tight voltage stability. |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - defines maximum continuous thermal load on PCB layout with standard FR4 copper pads. |
| Zener Impedance ZZT | 100 Ω at 250 mA - ensures minimal output voltage variation under dynamic load transients in feedback loops. |
| Noise Density | 1 µV/√Hz - critical for low-noise analog references in precision instrumentation and ADC biasing circuits. |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies voltage drift over temperature; allows accurate compensation in wide-temperature-range designs. |
| Reverse Leakage IR | 0.05 µA at 14.4 V - guarantees negligible standby current in high-impedance sensing or battery-backed reference applications. |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environments including space-grade and downhole electronics. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference Ground Node | Connected to system ground or common return; establishes reference potential for Zener regulation. |
| Cathode | Regulated Output Terminal | Banded end; 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 JANTXV qualification | Guarantees screening, testing, and traceability for aerospace and defense programs requiring full military reliability assurance. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress, ensuring long-term parameter stability. |
| 1% Zener voltage tolerance | Reduces need for post-production trimming in precision voltage references and calibration circuits. |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space and nuclear environments. |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency coupling and signal distortion in RF bias networks and fast-switching regulator feedback paths. |
Applications
| Aerospace Power Conditioning | Defense System Reference |
|---|---|
Use Scenario: Regulating auxiliary rail in satellite DC-DC converters exposed to thermal cycling and radiation. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 18.0 V bias for op-amps and error amplifiers in closed-loop control. Use Value: JANTXV1N4112D-1/TR's 1% tolerance and +0.090 %/°C tempco enable <±2% output variation across –55 °C to +125 °C operating range. | Use Scenario: Precision voltage reference in missile guidance subsystems requiring ESD immunity and hermetic sealing. IC Role / Device Role / Timing Role: Primary Zener reference for analog-to-digital conversion and sensor excitation circuits. Use Value: Non-sensitive to ESD per MIL-STD-750 Method 1020 and hermetically sealed glass package ensure reliability in high-vibration field deployments. |
| Nuclear Instrumentation | High-Temperature Industrial Control |
Use Scenario: Biasing photomultiplier tube (PMT) anodes in radiation detection equipment operating near reactors. IC Role / Device Role / Timing Role: High-stability Zener source delivering regulated voltage to PMT dynode chain. Use Value: Inherent radiation hardness and 175 °C max junction temperature allow uninterrupted operation in elevated gamma flux environments. | Use Scenario: Voltage reference in downhole oil/gas logging tools subjected to >150 °C ambient temperatures. IC Role / Device Role / Timing Role: Temperature-compensated shunt regulator maintaining reference integrity during thermal soak cycles. Use Value: Linear derating curve (500 mW → 0 W from 25 °C → 175 °C) enables predictable thermal design margin without active cooling. |
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 18.0 V, 1% Zener voltage but in surface-mount DO-213AA package; no axial leads. | Suitable for automated SMT assembly; lacks axial mounting flexibility and MIL-PRF-19500/435 JANTXV qualification. | Select when board space is constrained and military screening is not required. |
| JANS1N4112D-1 | Identical electrical specs and DO-35 package, but qualified to JANS (highest MIL-PRF-19500/435 level) with extended screening. | Required for spaceflight-critical systems where burn-in, lot acceptance testing, and radiation lot testing are mandated. | Select when full JANS-level reliability and traceability documentation are contractually required. |
Compared with JANTXV1N4112D-1/TR, 1N4112US-1 trades axial-mount robustness and military qualification for SMT compatibility, while JANS1N4112D-1 extends the same baseline performance with enhanced screening-making JANTXV1N4112D-1/TR the optimal balance of reliability, cost, and qualification for most defense avionics applications.
Availability
JANTXV1N4112D-1/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference, and nuclear instrumentation requiring stable component supply with full MIL-PRF-19500/435 traceability.
Supply support for JANTXV1N4112D-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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
JANTXV1N4112D-1/TR belongs to Microsemi's legacy 1N4099–1N4135 family of metallurgically bonded Zener diodes, engineered specifically for military and space applications demanding radiation tolerance, hermetic sealing, and rigorous process control.
FAQ
What is the Zener voltage tolerance of JANTXV1N4112D-1/TR?
JANTXV1N4112D-1/TR has a nominal Zener voltage of 18.0 V with ±1% tolerance, as indicated by the "D" suffix in its part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and applies across the full qualified operating temperature range when used within its derated power envelope.
Is JANTXV1N4112D-1/TR RoHS compliant?
No, JANTXV1N4112D-1/TR is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants; JANTXV-level parts retain tin-lead plating to meet MIL-STD-750 solderability requirements and maintain legacy qualification integrity.
What is the maximum Zener current IZM for JANTXV1N4112D-1/TR?
The maximum Zener current IZM for JANTXV1N4112D-1/TR is 40 mA, derived from its 500 mW power rating and 18.0 V Zener voltage (P = V × I). This value assumes operation at 25 °C lead temperature; current must be reduced linearly above 50 °C per the published derating curve to prevent exceeding junction temperature limits.
Does JANTXV1N4112D-1/TR require heatsinking in typical applications?
JANTXV1N4112D-1/TR does not require external heatsinking in typical applications due to its DO-35 package thermal resistance of 250 °C/W junction-to-lead (at 3/8″ lead length). At 40 mA and 18 V, power dissipation is 720 mW - exceeding its 500 mW rating - so actual operating current must be limited to ≤27.8 mA at 25 °C to stay within spec without heatsinking.
How is polarity marked on JANTXV1N4112D-1/TR?
JANTXV1N4112D-1/TR uses a cathode band marking: the banded end is the cathode and must be held at a higher potential than the anode for proper Zener regulation. This marking conforms to JEDEC standards and is visible on the glass body; incorrect polarity results in forward conduction (~1.1 V drop) rather than regulation.
JANTXV1N4112D-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:
- ±1%
- 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)
JANTXV1N4112D-1/TR FAQ
1.How can I place an order for JANTXV1N4112D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTXV1N4112D-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 JANTXV1N4112D-1/TR reliable?
The price and inventory of JANTXV1N4112D-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 JANTXV1N4112D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTXV1N4112D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTXV1N4112D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTXV1N4112D-1/TR?
JANTXV1N4112D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTXV1N4112D-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 JANTXV1N4112D-1/TR?
For technical support, including JANTXV1N4112D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTXV1N4112D-1/TR requirements.
6.How does Aetrix verify that JANTXV1N4112D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTXV1N4112D-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 JANTXV1N4112D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTXV1N4112D-1/TR?
All JANTXV1N4112D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTXV1N4112D-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 JANTXV1N4112D-1/TR part is unused and in its original packaging.
Return procedure for JANTXV1N4112D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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