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Microchip Technology JANTX1N4129D-1/TR
- Part No.:
- JANTX1N4129D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4129D-1/TR.pdf
- Description:
- DIODE ZENER 62V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,282
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Product details
Overview
JANTX1N4129D-1/TR from Microsemi is a 62 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace power conditioning and precision reference circuits.
For engineers reviewing the JANTX1N4129D-1/TR datasheet, JANTX1N4129D-1/TR pinout, JANTX1N4129D-1/TR application, or JANTX1N4129D-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status - critical for radiation-hardened analog design, voltage reference stability, and legacy avionics BOM continuity.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 62 V at 250 mA test current, exhibiting +0.100 %/°C temperature coefficient and 500 Ω maximum dynamic impedance (ZZT) at IZT. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation across –65 °C to +175 °C junction temperature range, it delivers 40 µV/√Hz noise density at 62 V and maintains ≤0.01 µA reverse leakage (IR) at VR = 47.1 V - enabling low-noise, high-stability references in analog signal chains and power supply feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 62 V ±1% at 250 mA - precise regulation point for mid-range voltage references |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in conduction-limited linear regulators |
| Dynamic Impedance ZZT | 500 Ω max at 250 mA - limits output voltage variation under load transients |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift enables compensated reference designs |
| Noise Density ND | 40 µV/√Hz - low broadband noise suitable for precision analog measurement front-ends |
| Reverse Leakage IR | ≤0.01 µA at 47.1 V - ensures minimal error current in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - validated for extended-temperature aerospace and defense systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode band marking; leads are tin-lead solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common; reverse voltage applied between cathode and anode |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; supplies regulated 62 V when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for flight-critical power and reference subsystems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration |
| 1% Zener voltage tolerance | Reduces need for post-calibration trimming in precision reference designs |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID), per MicroNote 050 |
| Low capacitance | Typical <2 pF - preserves high-frequency stability in fast-switching feedback paths |
Applications
| Avionics Power Reference | Satellite DC-DC Feedback |
|---|---|
Use Scenario: Providing stable 62 V reference for analog-to-digital converter biasing and sensor excitation in inertial measurement units. IC Role / Device Role / Timing Role: Precision voltage reference source for analog signal chain calibration. Use Value: 1% tolerance and +0.100 %/°C coefficient enable <±0.5% total drift over –55 °C to +125 °C operating range. | Use Scenario: Regulating feedback node in radiation-hardened isolated DC-DC converters powering onboard processors. IC Role / Device Role / Timing Role: Zener shunt regulator establishing primary-side voltage sense threshold. Use Value: 500 mW rating and 500 Ω dynamic impedance maintain regulation accuracy under 10–100 mA load variations. |
| Ground-Based Radar Bias Supply | Nuclear Instrumentation Channel Reference |
Use Scenario: Generating stable bias for GaN RF amplifier gate drivers in phased-array radar transceivers. IC Role / Device Role / Timing Role: High-voltage Zener clamp defining upper rail for negative gate control logic. Use Value: 62 V rating and 40 µV/√Hz noise density prevent spurious modulation in RF carrier signals. | Use Scenario: Serving as primary voltage reference in neutron detector pulse-height analyzers requiring long-term stability. IC Role / Device Role / Timing Role: Low-drift, low-noise Zener element in precision voltage divider networks. Use Value: Metallurgical bond and MIL-qualified construction ensure <0.1% parameter shift after 10 krad(Si) TID exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4129US-1 | Same 62 V, 1% spec; DO-213AA surface-mount package instead of DO-35 axial | Requires PCB re-layout; suited for automated SMT assembly but lacks axial mounting flexibility | Select for space-constrained, high-volume production where through-hole insertion is impractical |
| JANS1N4129D-1 | Identical electrical specs; qualified to JANS (highest MIL-PRF-19500 reliability level) instead of JANTX | Required for mission-critical spaceflight hardware; adds screening cost and longer lead time | Select only when full JANS-level radiation testing and burn-in are mandated by system specification |
Compared with JANTX1N4129D-1/TR, the 1N4129US-1 offers identical regulation performance in a surface-mount form factor ideal for modern high-density layouts, while JANS1N4129D-1 provides enhanced reliability assurance for deep-space missions - neither is pin-compatible due to differing packages, and selection depends on mechanical integration and qualification tier requirements.
Availability
JANTX1N4129D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC feedback, and nuclear instrumentation channel reference requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4129D-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.
The JANTX1N4129D-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where long-term parametric stability, radiation tolerance, and military-grade screening are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4129D-1/TR?
JANTX1N4129D-1/TR has a Zener voltage tolerance of ±1%, indicated by the "D" suffix in its part number per Microsemi's nomenclature. This 62 V regulation point is guaranteed at 250 mA test current and 25 °C ambient, supporting precision reference applications where tight voltage control is essential. The 1% tolerance reduces calibration overhead in high-accuracy analog circuits.
Is JANTX1N4129D-1/TR RoHS compliant?
No, JANTX1N4129D-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 JANTX-level qualified devices. JANTX1N4129D-1/TR uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements and maintain legacy compatibility in defense and aerospace assemblies.
What is the maximum reverse leakage current for JANTX1N4129D-1/TR?
The maximum reverse leakage current (IR) for JANTX1N4129D-1/TR is 0.01 µA at VR = 47.1 V, as specified in the Electrical Characteristics table. This ultra-low leakage ensures minimal error contribution in high-impedance reference divider networks and supports stable operation in low-power, battery-backed systems where standby current must be tightly constrained.
Does JANTX1N4129D-1/TR require derating above 25 °C?
Yes, JANTX1N4129D-1/TR requires linear derating of its 500 mW power dissipation starting at 25 °C ambient temperature, reaching zero at 175 °C. Derating follows a slope of –3.33 mW/°C, meaning at 75 °C ambient, maximum allowable power drops to 333 mW. This reflects its RθJA of 300 °C/W on standard FR4 board layout with defined copper pad area.
How is polarity marked on JANTX1N4129D-1/TR?
JANTX1N4129D-1/TR uses a cathode band marking on the glass body to indicate polarity: the banded end is the cathode and must be held positive relative to the anode for proper Zener regulation. This axial-leaded DO-35 package conforms to JEDEC DO-204AH mechanical standards, and correct orientation is critical to avoid forward conduction and ensure stable 62 V reverse breakdown operation.
JANTX1N4129D-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):
- 62 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 500 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 47.1 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)
JANTX1N4129D-1/TR FAQ
1.How can I place an order for JANTX1N4129D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4129D-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 JANTX1N4129D-1/TR reliable?
The price and inventory of JANTX1N4129D-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 JANTX1N4129D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4129D-1/TR?
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JANTX1N4129D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4129D-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 JANTX1N4129D-1/TR?
For technical support, including JANTX1N4129D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4129D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4129D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4129D-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 JANTX1N4129D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4129D-1/TR?
All JANTX1N4129D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4129D-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 JANTX1N4129D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4129D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4129D-1/TR Tags
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