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Microchip Technology JANTX1N4129D-1
- Part No.:
- JANTX1N4129D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4129D-1.pdf
- Description:
- DIODE ZENER 62V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,527
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Product details
Overview
JANTX1N4129D-1 from Microsemi is a 500 mW, 62 V, 1% tolerance 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 and defense power supplies.
For engineers reviewing the JANTX1N4129D-1 datasheet, JANTX1N4129D-1 pinout, JANTX1N4129D-1 application, or JANTX1N4129D-1 equivalent, key selection criteria include Zener voltage accuracy (±1%), low noise density (1 µV/√Hz), radiation hardness, and military-grade thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 62 V at 250 mA test current, exhibiting a positive temperature coefficient of +0.100 %/°C and dynamic impedance of 500 Ω at IZT. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and mechanical stress.
Designed for operation in the reverse-biased breakdown region, it delivers regulated output with ≤0.01 µA reverse leakage at 47.1 V and supports continuous DC regulation across -65 °C to +175 °C ambient range, with linear power derating from 500 mW at 25 °C to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±1% at 250 mA - enables precise reference generation in analog power monitoring circuits |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact, convection-cooled designs |
| Dynamic Impedance (ZZT) | 500 Ω at 250 mA - limits output voltage variation under load transients |
| Noise Density | 1 µV/√Hz - critical for low-noise reference applications such as precision ADC biasing |
| Reverse Leakage (IR) | ≤0.01 µA at 47.1 V - ensures minimal quiescent current in standby-mode systems |
| Temp. Coefficient (αVZ) | +0.100 %/°C - predictable drift behavior simplifies temperature compensation design |
| Junction Temp. Range | -65 °C to +175 °C - validated for extended-range operation in avionics and space-qualified electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode indicated by band; banded end is anode when used as forward diode, but functions as cathode (positive terminal) during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Zener cathode connection | Connected to regulated output node; must be held at higher potential than cathode for breakdown conduction |
| Cathode (unbanded end) | Zener anode connection | Connected to system ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical aerospace and defense hardware with full lot traceability |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration, ensuring long-term parameter stability |
| 1% Zener voltage tolerance (D suffix) | Reduces need for external trimming in precision reference circuits, lowering BOM count and calibration cost |
| Radiation hardness per MicroNote 050 | Enables use in low-earth orbit and nuclear-hardened systems without additional shielding or derating |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency coupling into sensitive analog nodes, preserving signal integrity in mixed-signal PCBs |
Applications
| Aerospace Power Monitoring | Defense Radar Bias Supply |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters measuring bus voltage in satellite power distribution units. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 62 V reference point for scaling high-voltage measurements. Use Value: ±1% tolerance and +0.100 %/°C TC enable accurate telemetry over -40 °C to +85 °C operational range without software correction. | Use Scenario: Stabilizing bias voltage for GaN RF amplifier stages in airborne active electronically scanned array (AESA) radar transceivers. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant gate drive voltage despite input ripple and thermal drift. Use Value: 1 µV/√Hz noise density prevents phase noise degradation in local oscillator chains, preserving radar resolution. |
| Nuclear Instrumentation | High-Reliability Industrial PLC |
Use Scenario: Providing reference voltage for radiation detector pulse-height analyzers operating inside reactor containment buildings. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference ensuring consistent gain calibration under neutron/gamma flux exposure. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for redundant shielding or periodic recalibration in Class 1E safety systems. | Use Scenario: Voltage clamping and overvoltage protection in programmable logic controller (PLC) analog input modules handling 0–10 V sensor signals. IC Role / Device Role / Timing Role: Overvoltage clamp limiting transient excursions beyond 62 V to protect downstream op-amps and ADC front-ends. Use Value: 500 mW power rating and 500 Ω ZZT allow safe dissipation of 100 ms surge events without parameter shift or failure. |
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 electrical specs, but in surface-mount DO-213AA package instead of axial DO-35 | Requires rework of PCB layout for SMT assembly; lacks axial lead flexibility for prototyping or through-hole repair | Select when automated assembly and board space constraints outweigh manual serviceability needs |
| JANTXV1N4129D-1 | Identical electrical and mechanical specs, but qualified to JANTXV (enhanced screening) per MIL-PRF-19500/435 | Required for programs demanding extended burn-in, life testing, and tighter parametric limits on αVZ and ZZT | Select when program specification mandates JANTXV-level reliability screening and lot acceptance testing |
Compared with JANTX1N4129D-1, the JANTXV variant adds enhanced screening for long-life deployments, while the 1N4129US-1 offers identical regulation performance in a space-saving SMT form factor-neither is pin-compatible due to differing package types.
Availability
JANTX1N4129D-1 is available at Aetrix Electronics and suitable for aerospace power monitoring, defense radar bias supply, and nuclear instrumentation requiring stable component supply with full MIL-spec traceability and lot-level documentation.
Supply support for JANTX1N4129D-1 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 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment electronics where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4129D-1?
JANTX1N4129D-1 has a Zener voltage tolerance of ±1%, indicated by the "D" suffix in its part number per Microsemi's nomenclature. This tight tolerance is achieved through post-process binning and verified during MIL-PRF-19500/435 qualification testing at 25 °C with 250 mA test current. The 62 V nominal value remains within 61.38 V to 62.62 V across all qualified lots, supporting high-accuracy reference design without external trimming.
Is JANTX1N4129D-1 RoHS compliant?
No, JANTX1N4129D-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants-not for JAN, JANTX, JANTXV, or JANS levels. The JANTX1N4129D-1 uses traditional tin-lead plating per MIL-STD-750 method 2026 and retains lead content to ensure solderability and reliability under thermal cycling in military environments.
What is the maximum reverse leakage current for JANTX1N4129D-1?
The maximum reverse leakage current (IR) for JANTX1N4129D-1 is 0.01 µA at 47.1 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This ultra-low leakage ensures minimal parasitic current draw in high-impedance reference nodes and supports stable operation in battery-backed or low-power monitoring circuits where standby current must remain below 100 nA.
How does JANTX1N4129D-1 handle thermal derating?
JANTX1N4129D-1 linearly derates from 500 mW at 25 °C to zero at 175 °C ambient, per Figure 2 in the datasheet. Derating begins at 50 °C lead temperature, with a slope of -6.25 mW/°C. For typical FR4 PCB mounting with 4 mm² copper pads, this allows sustained 350 mW operation at 70 °C ambient-critical for convection-cooled avionics enclosures where forced airflow is unavailable.
Can JANTX1N4129D-1 be used as a transient voltage suppressor?
JANTX1N4129D-1 is not rated or characterized as a transient voltage suppressor (TVS). While it clamps above 62 V in reverse breakdown, its 500 mW average power rating and lack of peak pulse power (IPP) specification make it unsuitable for ESD or lightning surge suppression. It is designed for steady-state regulation-not transient energy absorption. For TVS applications, Microsemi's dedicated JAN/ JANTX-rated TVS diodes (e.g., JANTXV1N6105A) should be selected instead of JANTX1N4129D-1.
JANTX1N4129D-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for JANTX1N4129D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4129D-1 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 reliable?
The price and inventory of JANTX1N4129D-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4129D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4129D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4129D-1?
JANTX1N4129D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4129D-1 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?
For technical support, including JANTX1N4129D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4129D-1 requirements.
6.How does Aetrix verify that JANTX1N4129D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4129D-1 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 meets industry standards.
7.What is the process for return or replacement of JANTX1N4129D-1?
All JANTX1N4129D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4129D-1, 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 part is unused and in its original packaging.
Return procedure for JANTX1N4129D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4129D-1 Tags
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