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Microchip Technology JAN1N4129D-1
- Part No.:
- JAN1N4129D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4129D-1.pdf
- Description:
- DIODE ZENER 62V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,989
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Product details
Overview
JAN1N4129D-1 from Microsemi is a 62 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4129D-1 datasheet, JAN1N4129D-1 pinout, JAN1N4129D-1 application, or JAN1N4129D-1 equivalent, key selection factors include its 62 V nominal Zener voltage at 250 mA test current, 500 Ω maximum dynamic impedance, 0.01 µA reverse leakage at 47.1 V, and radiation-hardened hermetic construction suitable for mission-critical analog reference and overvoltage protection circuits.
Technical Context
This device operates as a precision shunt voltage regulator with a specified Zener voltage of 62.0 V at IZT = 250 mA, exhibiting a temperature coefficient of +0.100 %/°C and noise density of 1 µV/√Hz - optimized for low-noise analog references where stability across temperature and minimal broadband noise are critical.
Its metallurgical bond construction ensures mechanical robustness under thermal cycling and shock, while the DO-35 glass package provides hermetic sealing and non-ESD-sensitive operation per MIL-STD-750 Method 1020, supporting use in harsh-environment analog signal conditioning and voltage clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 62.0 V at IZT = 250 mA - defines precise regulation point for reference and clamp circuits |
| Zener Tolerance | ±1% - enables tight voltage control without post-selection in high-accuracy analog designs |
| Power Dissipation | 500 mW at TL = 25 °C - supports stable regulation in compact through-hole layouts with linear derating to zero at 175 °C |
| Dynamic Impedance ZZT | 500 Ω max - limits output voltage variation under load current changes, critical for reference stability |
| Reverse Leakage IR | 0.01 µA at VR = 47.1 V - ensures minimal error current in high-impedance bias networks |
| Noise Density | 1 µV/√Hz - enables use in low-noise instrumentation references where broadband noise degrades SNR |
| Temp. Coefficient αVZ | +0.100 %/°C - quantifies predictable positive drift for compensation in wide-temperature-range systems |
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 or RoHS-compliant matte-tin plating, ~0.2 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or low-impedance return path; establishes reference potential for regulation |
| Cathode (banded end) | Zener regulation output | Provides stable 62 V output when reverse-biased; must be connected to regulated rail or feedback node |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification (JANS level) | Validated reliability for space-grade and military avionics applications requiring zero infant mortality and extended lifetime |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parameter stability in embedded systems |
| 1 µV/√Hz noise density | Enables direct use in precision ADC reference buffers and low-noise op-amp biasing without external filtering |
| Hermetic glass DO-35 package | Prevents moisture ingress and parametric shift in humid or corrosive environments typical of airborne and naval platforms |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Allows safe handling and assembly in standard production lines without ESD protection infrastructure |
Applications
| Avionics Power Reference | Satellite Voltage Clamp |
|---|---|
Use Scenario: Providing stable 62 V reference for DC-DC converter feedback loops in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precise feedback threshold for isolated flyback controllers. Use Value: ±1% tolerance and +0.100 %/°C TC enable <1.5% total regulation error over –55 °C to +125 °C operating range. |
Use Scenario: Clamping transient overvoltage on 50 V bus during solar array arc events in LEO satellites. IC Role / Device Role / Timing Role: Passive overvoltage protector absorbing surge energy via controlled Zener breakdown. Use Value: 500 mW rating and hermetic DO-35 package withstand repeated 100 ms transients without parameter shift or failure. |
| Nuclear Instrumentation Bias | Rad-Hard Test Equipment |
Use Scenario: Generating ultra-stable bias voltage for photomultiplier tube anode chains in radiation detection systems. IC Role / Device Role / Timing Role: Low-noise analog reference source delivering clean 62 V to high-gain amplification stages. Use Value: 1 µV/√Hz noise density prevents degradation of signal-to-noise ratio in sub-picoamp current measurements. |
Use Scenario: Calibrating radiation-hardened test fixtures used to validate ASICs for nuclear reactor monitoring. IC Role / Device Role / Timing Role: Traceable voltage standard traceable to NIST via JANS-level qualification and lot-specific test data. Use Value: MIL-qualified lot documentation and radiation hardness per MicroNote 050 support metrology-grade calibration confidence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4129UR-1 | Same 62 V, 1% spec but in DO-213AA surface-mount package; no axial leads | Required for automated SMT assembly; lacks axial mounting flexibility and lead-length thermal resistance control | Select when board space is constrained and reflow compatibility is mandatory; verify thermal relief pad design for 500 mW dissipation |
| JANTXV1N4129D | Identical electrical specs and DO-35 package, but qualified only to JANTXV (not JANS); lower screening rigor | Suitable for high-reliability ground-based systems where full space-grade qualification is not mandated | Choose for cost-sensitive defense programs with relaxed radiation and burn-in requirements; same footprint and performance |
Compared with JAN1N4129D-1, 1N4129UR-1 enables SMT scalability but sacrifices manual repairability and thermal management flexibility, while JANTXV1N4129D reduces procurement cost and lead time without compromising voltage accuracy or noise performance in non-space applications.
Availability
JAN1N4129D-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage clamp, and nuclear instrumentation bias requiring stable component supply with full MIL-PRF-19500/435 traceability and lot-specific test reports.
Supply support for JAN1N4129D-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.
JAN1N4129D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for radiation-tolerant, hermetically sealed voltage regulation in mission-critical systems where parameter stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4129D-1?
JAN1N4129D-1 has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This tight tolerance ensures the actual regulation voltage remains within 61.38 V to 62.62 V at 250 mA test current and 25 °C, making it suitable for precision reference applications where post-calibration is impractical.
Is JAN1N4129D-1 RoHS compliant?
No, JAN1N4129D-1 is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4129D-1e3); the "JAN" prefix indicates military-grade qualification with tin-lead plating per MIL-STD-750, which is exempt from RoHS restrictions under EU Directive 2011/65/EU Annex III.
What is the maximum reverse leakage current for JAN1N4129D-1?
The maximum reverse leakage current for JAN1N4129D-1 is 0.01 µA at VR = 47.1 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This ultra-low leakage minimizes error current in high-impedance reference divider networks.
How does the temperature coefficient affect JAN1N4129D-1 performance?
JAN1N4129D-1 has a temperature coefficient of +0.100 %/°C, meaning its Zener voltage increases by approximately 62 mV per °C rise in junction temperature. This predictable positive drift allows designers to compensate for thermal effects in closed-loop regulators or select complementary components for zero-drift reference designs.
Can JAN1N4129D-1 be used in surface-mount designs?
No, JAN1N4129D-1 uses a DO-35 axial-leaded glass package and is not suitable for surface-mount assembly. For SMT-compatible equivalents, consider 1N4129UR-1 in DO-213AA package - identical electrical specs but designed for reflow soldering and automated placement.
JAN1N4129D-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:
- -
- 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)
JAN1N4129D-1 FAQ
1.How can I place an order for JAN1N4129D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4129D-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 JAN1N4129D-1 reliable?
The price and inventory of JAN1N4129D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4129D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4129D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4129D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4129D-1?
JAN1N4129D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4129D-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 JAN1N4129D-1?
For technical support, including JAN1N4129D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4129D-1 requirements.
6.How does Aetrix verify that JAN1N4129D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4129D-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 JAN1N4129D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4129D-1?
All JAN1N4129D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4129D-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 JAN1N4129D-1 part is unused and in its original packaging.
Return procedure for JAN1N4129D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4129D-1 Tags
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