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Microchip Technology JANTX1N4125C-1/TR
- Part No.:
- JANTX1N4125C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4125C-1/TR.pdf
- Description:
- DIODE ZENER 47V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,164
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Product details
Overview
JANTX1N4125C-1/TR from Microsemi is a 47 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4125C-1/TR datasheet, JANTX1N4125C-1/TR pinout, JANTX1N4125C-1/TR application, or JANTX1N4125C-1/TR equivalent, key selection criteria include Zener voltage accuracy (±2%), low noise density (1 µV/√Hz), radiation hardness, and hermetic DO-35 packaging for harsh-environment operation.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 47 V at 250 mA test current, exhibiting a temperature coefficient of +0.095 %/°C and dynamic impedance of 250 Ω at IZT. Its metallurgical bond construction ensures stable regulation across wide current (1–40 mA) and temperature (−65 to +175 °C) ranges.
Designed for military-grade reliability, JANTX1N4125C-1/TR meets MIL-PRF-19500/435 requirements with RoHS-compliant matte-tin plating (commercial versions only), non-ESD-sensitive behavior per MIL-STD-750 Method 1020, and inherent radiation hardness per Microsemi MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 47 V ±2% at 250 mA - enables precise reference generation for 48 V rail monitoring and regulation. |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, convection-cooled designs without forced airflow. |
| Noise Density | 1 µV/√Hz - critical for low-noise analog references in instrumentation and ADC biasing circuits. |
| Dynamic Impedance ZZT | 250 Ω at 250 mA - ensures minimal output voltage variation under load transients in feedback loops. |
| Temp Coefficient αVZ | +0.095 %/°C - predictable positive drift allows compensation in temperature-stable reference networks. |
| Reverse Leakage IR | ≤10 µA at 37.6 V - guarantees low quiescent current in standby-mode power management systems. |
| Thermal Resistance RθJL | 250 °C/W (3/8″ lead length) - informs thermal design margin when mounted on FR4 with standard copper pads. |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Weight ≈ 0.2 g; dimensions: body diameter 1.42–2.29 mm, body length 3.56–5.08 mm, lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for Zener breakdown. |
| Cathode | Regulated output node | Banded terminal; supplies stable 47 V reference when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for aerospace and defense programs requiring assured reliability. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock, extending service life in avionics. |
| Low 1 µV/√Hz noise density | Enables use in high-resolution data acquisition front-ends where reference noise directly impacts ENOB. |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion in humid, salt-laden, or vacuum environments typical of space and naval systems. |
| Radiation hardness | Inherent tolerance to total ionizing dose (TID) per Microsemi MicroNote 050 supports operation in radiation-prone orbits or nuclear facilities. |
Applications
| Aerospace Power Monitoring | Defense System Reference |
|---|---|
Use Scenario: Real-time monitoring of 48 V primary bus voltage in satellite power distribution units. IC Role / Device Role / Timing Role: Shunt reference diode providing stable 47 V threshold for overvoltage comparator circuitry. Use Value: ±2% tolerance and +0.095 %/°C TC enable accurate fault detection across −55 to +125 °C operational range. | Use Scenario: Precision voltage reference in radar transmitter bias control modules operating in mobile ground vehicles. IC Role / Device Role / Timing Role: Regulator element in temperature-compensated reference string for RF amplifier DC bias stability. Use Value: 1 µV/√Hz noise density prevents phase noise degradation in local oscillator subsystems. |
| Nuclear Instrumentation | Avionics Test Equipment |
Use Scenario: High-stability reference in portable radiation survey meters deployed near reactor containment zones. IC Role / Device Role / Timing Role: Primary Zener reference in battery-powered analog front-end for pulse-height analysis. Use Value: Inherent radiation hardness eliminates need for shielding or derating, reducing size and weight. | Use Scenario: Calibration reference in benchtop flight control system testers used for F-16 and C-130 maintenance depots. IC Role / Device Role / Timing Role: Traceable voltage standard for automated functional test of analog sensor signal conditioners. Use Value: MIL-qualified JANTX level ensures audit-ready documentation and lot traceability for FAA/EASA compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4125C-1 | Higher screening level (JANTXV vs JANTX); tighter parametric limits and extended temperature testing. | Suitable for mission-critical flight control electronics where failure probability must be <10⁻⁹/hour. | Select when full JANTXV qualification and enhanced burn-in are required beyond JANTX baseline. |
| 1N4125C-1TR | Commercial-grade version; no MIL-PRF-19500 qualification; RoHS compliant matte-tin plating only. | Applicable in industrial test equipment or non-safety-critical telecom infrastructure with cost sensitivity. | Choose for cost-driven designs where military screening and radiation hardness are not mandatory. |
Compared with JANTX1N4125C-1/TR, JANTXV1N4125C-1 offers higher reliability assurance for flight-critical systems, while 1N4125C-1TR provides identical electrical specs at lower cost for commercial applications without qualification mandates.
Availability
JANTX1N4125C-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, defense system reference, and nuclear instrumentation requiring stable component supply with full MIL-qualified traceability and long-term obsolescence management.
Supply support for JANTX1N4125C-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.
JANTX1N4125C-1/TR belongs to Microsemi's legacy MIL-PRF-19500-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where environmental robustness and parametric stability are non-negotiable.
FAQ
What is the Zener voltage tolerance for JANTX1N4125C-1/TR?
JANTX1N4125C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per Microsemi's nomenclature. This corresponds to a 47 V nominal rating with a guaranteed range of 46.06 V to 47.94 V at 250 mA test current and 25 °C ambient temperature, supporting precision regulation in high-integrity systems.
Is JANTX1N4125C-1/TR RoHS compliant?
JANTX1N4125C-1/TR is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with e3 suffix) are available only for commercial-grade parts-not for JAN, JANTX, JANTXV, or JANS qualified devices. The JANTX1N4125C-1/TR uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements.
What is the maximum Zener current IZM for JANTX1N4125C-1/TR?
The maximum Zener current IZM for JANTX1N4125C-1/TR is 40 mA, derived from its 500 mW power rating and 47 V Zener voltage (P = V × I → I = 0.5 W / 47 V ≈ 10.6 mA), but the datasheet specifies 40 mA as the absolute maximum continuous current before thermal runaway, consistent with its 250 °C/W junction-to-lead thermal resistance.
Does JANTX1N4125C-1/TR require heatsinking in standard PCB layouts?
JANTX1N4125C-1/TR does not require external heatsinking in standard FR4 layouts with 4 mm² copper pads and 1 mm track width, as its 250 °C/W junction-to-lead thermal resistance allows safe operation up to 500 mW at 25 °C ambient. Derating begins linearly at 50 °C lead temperature, reaching zero dissipation at 175 °C-no heatsink needed below 100 mW continuous load.
How is polarity marked on JANTX1N4125C-1/TR?
JANTX1N4125C-1/TR uses a cathode band for polarity identification: the banded end is the cathode and must be held positive relative to the anode to achieve Zener regulation. This marking conforms to JEDEC DO-35 standards and is visible as a single dark ring near one lead end of the glass body.
JANTX1N4125C-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):
- 47 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 35.8 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)
JANTX1N4125C-1/TR FAQ
1.How can I place an order for JANTX1N4125C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4125C-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 JANTX1N4125C-1/TR reliable?
The price and inventory of JANTX1N4125C-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 JANTX1N4125C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4125C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4125C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4125C-1/TR?
JANTX1N4125C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4125C-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 JANTX1N4125C-1/TR?
For technical support, including JANTX1N4125C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4125C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4125C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4125C-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 JANTX1N4125C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4125C-1/TR?
All JANTX1N4125C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4125C-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 JANTX1N4125C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4125C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4125C-1/TR Tags
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