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Microchip Technology JANS1N4129D-1/TR
- Part No.:
- JANS1N4129D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4129D-1/TR.pdf
- Description:
- DIODE ZENER 62V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,523
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Product details
Overview
JANS1N4129D-1/TR 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 aerospace and defense applications. It delivers stable voltage regulation with 500 Ω max Zener impedance at 250 mA test current, 0.01 µA max reverse leakage at 47.1 V, and +0.100 %/°C temperature coefficient.
For engineers reviewing the JANS1N4129D-1/TR datasheet, JANS1N4129D-1/TR pinout, JANS1N4129D-1/TR application, or JANS1N4129D-1/TR equivalent, key selection criteria include Zener voltage tolerance (1%), radiation hardness, hermetic glass packaging, MIL-spec qualification level, and low-noise performance in precision reference circuits.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock, critical for space-grade operation.
The JANS1N4129D-1/TR exhibits a nominal Zener voltage of 62 V at 250 mA test current, dynamic impedance of ≤500 Ω, and reverse leakage current limited to 0.01 µA at 47.1 V - enabling use in low-drift, low-power biasing and calibration functions where long-term parametric stability is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V ±1% at 250 mA - enables precise mid-range voltage reference generation with tight initial accuracy |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, conduction-cooled designs without forced airflow |
| Zener Impedance (ZZT) | ≤500 Ω at 250 mA - ensures minimal output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤0.01 µA at 47.1 V - guarantees negligible error contribution in high-impedance reference nodes |
| Temp. Coefficient (αVZ) | +0.100 %/°C - provides predictable, monotonic drift behavior across -65 to +175 °C operating range |
| Noise Density | ≤1 µV/√Hz below 6.8 V; not specified for 62 V - design assumes low-noise performance typical of metallurgically bonded Zeners |
| Junction Temp. Range | -65 to +175 °C - validated for extended-temperature operation in satellite power systems and avionics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by single black band; banded end must be held positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to higher-potential rail; supplies stable 62 V reference when reverse-biased |
| Anode (unbanded end) | Reference ground return | Provides low-impedance path to circuit common; must be held at lower potential than cathode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S (space-level) reliability including radiation hardness, burn-in, and lot acceptance testing |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling - critical for launch vibration and orbital temperature swings |
| 1% Zener voltage tolerance | Reduces need for post-calibration trimming in precision analog subsystems such as telemetry sensor front-ends |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over decades - meets NASA EEE-INST-002 lifetime requirements |
| Non-ESD-sensitive design | Withstands >4 kV HBM without screening or handling controls - simplifies integration into cleanroom assembly lines |
Applications
| Spacecraft Power Regulation | Avionics Reference Supply |
|---|---|
Use Scenario: Providing stable 62 V reference for DC-DC converter feedback loops in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Two-terminal Zener reference establishing precise output voltage setpoint for isolated flyback controllers. Use Value: JANS-level qualification ensures uninterrupted operation during radiation events; 1% tolerance eliminates system-level recalibration after launch. | Use Scenario: Biasing high-voltage op-amps in flight control computer analog signal conditioning stages. IC Role / Device Role / Timing Role: Precision voltage clamp defining upper rail for instrumentation amplifiers monitoring hydraulic pressure sensors. Use Value: Low 0.01 µA leakage prevents loading of high-Z sensor outputs; hermetic package withstands cabin pressure cycling. |
| Nuclear Instrumentation | Strategic Missile Guidance |
Use Scenario: Setting threshold voltage for gamma-ray detector pulse-height analyzers in radiation-hardened field instruments. IC Role / Device Role / Timing Role: Stable reference node for comparator hysteresis and ADC input scaling in mixed-signal acquisition modules. Use Value: Predictable +0.100 %/°C drift allows accurate temperature-compensated energy binning across -40 to +85 °C field environments. | Use Scenario: Generating regulated bias for inertial measurement unit (IMU) oscillator circuits in strategic missile navigation subsystems. IC Role / Device Role / Timing Role: Primary voltage reference for oven-controlled crystal oscillator (OCXO) temperature compensation networks. Use Value: Metallurgical bond integrity ensures no parametric shift during high-g launch acceleration; DO-35 lead form enables through-hole mounting on rigid ceramic substrates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4129D-1 | Same electrical specs, but qualified only to JANTXV level (not JANS); lacks full space-level radiation testing and lot traceability | Suitable for high-reliability ground-based military systems, not certified for orbital deployment | Select when cost sensitivity outweighs requirement for Class S radiation hardness and extended lifetime validation |
| 1N4129US-1 | Same 62 V/1% spec in surface-mount DO-213AA package; no MIL-qualified version available | Enables automated placement and smaller PCB footprint, but lacks hermeticity and radiation assurance | Choose for commercial or industrial applications requiring Zener stability without environmental or lifetime certification |
Compared with JANS1N4129D-1/TR, JANTXV1N4129D-1 offers identical regulation performance with reduced qualification rigor, while 1N4129US-1 trades hermetic reliability for SMT manufacturability - making the JANS variant the sole choice for mission-critical space hardware.
Availability
JANS1N4129D-1/TR is available at Aetrix Electronics and suitable for spacecraft power regulation, avionics reference supply, nuclear instrumentation requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANS1N4129D-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 RF components for aerospace, defense, and industrial markets.
The JANS1N4129D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode product line, designed specifically for radiation-tolerant, long-lifetime voltage reference applications in spaceflight and strategic systems.
FAQ
What is the Zener voltage tolerance for JANS1N4129D-1/TR?
JANS1N4129D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its part number per Microsemi's nomenclature. This is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2, where it specifies 62 V nominal VZ at 250 mA with 1% tolerance. The tighter tolerance reduces calibration burden in precision analog systems compared to standard 5% variants.
Is JANS1N4129D-1/TR radiation hardened?
Yes, JANS1N4129D-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050 and qualified to JANS level per MIL-PRF-19500/435. Its metallurgically bonded structure and hermetic DO-35 package provide proven resistance to total ionizing dose (TID) and displacement damage, making it suitable for low-earth orbit and deep-space missions where radiation-induced parameter shift must be minimized.
What does the "TR" suffix mean in JANS1N4129D-1/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. Per page 2 of T4-LDS-0245-2, this option is available for all variants in the series, and JANS1N4129D-1/TR is supplied in reel format optimized for high-reliability manufacturing lines handling MIL-spec components.
What is the maximum reverse leakage current for JANS1N4129D-1/TR?
JANS1N4129D-1/TR has a maximum reverse leakage current (IR) of 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 error injection in high-impedance reference circuits, such as those used in precision data acquisition front-ends for scientific instrumentation.
Can JANS1N4129D-1/TR be used in surface-mount designs?
No - JANS1N4129D-1/TR uses the axial-leaded DO-35 (DO-204AH) package and is not compatible with surface-mount assembly. For SMT equivalents, Microsemi offers the 1N4129US-1 in DO-213AA package, but it lacks MIL-qualification and hermetic sealing. JANS1N4129D-1/TR requires through-hole mounting with appropriate lead-forming and soldering per MIL-STD-2000.
JANS1N4129D-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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4129D-1/TR FAQ
1.How can I place an order for JANS1N4129D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4129D-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 JANS1N4129D-1/TR reliable?
The price and inventory of JANS1N4129D-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 JANS1N4129D-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4129D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4129D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4129D-1/TR?
JANS1N4129D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4129D-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 JANS1N4129D-1/TR?
For technical support, including JANS1N4129D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4129D-1/TR requirements.
6.How does Aetrix verify that JANS1N4129D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4129D-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 JANS1N4129D-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4129D-1/TR?
All JANS1N4129D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4129D-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 JANS1N4129D-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4129D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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