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Microchip Technology JANS1N4126-1/TR
- Part No.:
- JANS1N4126-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4126-1/TR.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,487
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Product details
Overview
JANS1N4126-1/TR from Microsemi is a 51 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications, with 1% voltage tolerance, 300 Ω dynamic impedance at 250 mA, and max noise density of 1 µV/√Hz.
For engineers reviewing the JANS1N4126-1/TR datasheet, JANS1N4126-1/TR pinout, JANS1N4126-1/TR application, or JANS1N4126-1/TR equivalent, key selection criteria include Zener voltage accuracy (±1%), radiation hardness, low noise performance, thermal resistance (250 °C/W junction-to-lead), and military-grade qualification level.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, delivering stable regulation across wide current (250 mA test point) and temperature (-65 °C to +175 °C) ranges. Its metallurgical bond construction ensures mechanical robustness and long-term stability under thermal cycling and vibration stress.
The JANS1N4126-1/TR exhibits a positive temperature coefficient of +0.100 %/°C and maximum reverse leakage of 10 nA at 38.8 V, supporting use in low-drift reference circuits where parametric consistency across environmental extremes is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±1% at 250 mA - enables precise 51 V rail regulation with minimal calibration overhead |
| Power Dissipation | 500 mW @ TL = 25 °C - supports continuous operation in compact, unheatsinked designs |
| Dynamic Impedance ZZT | 300 Ω @ 250 mA - ensures tight voltage regulation under load transients |
| Noise Density | 1 µV/√Hz - critical for low-noise analog references and precision instrumentation |
| Temp Coefficient αVZ | +0.100 %/°C - predictable, monotonic drift simplifies temperature compensation |
| Reverse Leakage IR | 10 nA @ 38.8 V - minimizes standby power loss in high-impedance bias networks |
| Junction Temp Range | -65 °C to +175 °C - validated for extended-range operation in space and avionics |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode band marking; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lowest potential node in shunt regulator configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input supply via current-limiting resistor; delivers stable 51 V to load |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets full screening, testing, and traceability requirements for spaceflight and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution ADC references and low-phase-noise oscillator biasing |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over >20-year service life in harsh environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no derating required up to 100 krad(Si) |
Applications
| Avionics Power Conditioning | Satellite Onboard Reference |
|---|---|
Use Scenario: Regulating auxiliary 51 V bus in flight control electronics subject to wide temperature swings and EMI. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for op-amps and comparators in servo loop feedback paths. Use Value: Maintains <±0.5% output deviation across -55 °C to +125 °C ambient, ensuring closed-loop stability without recalibration. | Use Scenario: Supplying precision reference voltage to radiation-tolerant ADCs in LEO satellite telemetry subsystems. IC Role / Device Role / Timing Role: Primary Zener reference source for 16-bit SAR ADC front-end, operating continuously in vacuum. Use Value: Delivers <1 µV/√Hz noise floor and zero parameter shift after 100 krad(Si) TID exposure per MicroNote 050. |
| Nuclear Instrumentation | High-Reliability Test Equipment |
Use Scenario: Biasing photomultiplier tube (PMT) anode chains in reactor monitoring detectors. IC Role / Device Role / Timing Role: High-stability Zener element in cascaded voltage multiplier stacks requiring ultra-low leakage. Use Value: 10 nA reverse leakage at 38.8 V prevents signal degradation in picoamp-level current measurement paths. | Use Scenario: Calibration reference in portable metrology tools used for field verification of military-grade power supplies. IC Role / Device Role / Timing Role: Traceable 51 V standard against which DMMs and programmable loads are periodically validated. Use Value: ±1% initial tolerance and <0.01%/1000 hrs long-term drift support NIST-traceable calibration intervals exceeding 2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4126US-1 | Same electrical specs but in surface-mount DO-213AA package; no axial leads | Requires PCB re-layout for SMT assembly; unsuitable for through-hole prototyping or wire-wrap | Select when automated assembly, board space constraints, or vibration resistance outweigh lead-forming flexibility |
| JANTXV1N4126-1 | Identical DO-35 package and electrical parameters, but qualified only to JANTXV (not JANS) level | Lacks full JANS screening (e.g., burn-in, lot acceptance tests); not approved for Class S spaceflight | Select for high-reliability ground-based systems where JANS cost premium is unjustified |
Compared with JANS1N4126-1/TR, the 1N4126US-1 offers identical regulation performance in a smaller footprint but sacrifices mechanical serviceability, while JANTXV1N4126-1 reduces procurement cost and lead time at the expense of radiation tolerance validation and extended screening coverage.
Availability
JANS1N4126-1/TR is available at Aetrix Electronics and suitable for avionics power conditioning, satellite onboard reference, and nuclear instrumentation requiring stable component supply with full traceability and long-term obsolescence management.
Supply support for JANS1N4126-1/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, radiation-hardened, and aerospace-grade components.
The JANS1N4126-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode family, engineered specifically for mission-critical voltage reference applications in space, defense, and nuclear environments.
FAQ
What is the Zener voltage tolerance for JANS1N4126-1/TR?
JANS1N4126-1/TR has a nominal Zener voltage of 51.0 V with a ±1% tolerance, corresponding to the "D" suffix in its nomenclature per Microsemi's part numbering system. This tight tolerance is achieved through post-process binning and verified during JANS-level qualification testing at 25 °C with thermal equilibrium.
Is JANS1N4126-1/TR RoHS compliant?
No, JANS1N4126-1/TR is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants; JANS-level devices retain tin-lead plating to meet MIL-STD-750 solderability and reliability requirements.
What does the "TR" suffix mean in JANS1N4126-1/TR?
The "TR" suffix in JANS1N4126-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This packaging option is optional and must be specified at order time; the base part JANS1N4126-1 is supplied in bulk or ammo pack formats.
How is polarity marked on JANS1N4126-1/TR?
JANS1N4126-1/TR uses a cathode band marking on the glass body - the banded end is the cathode and must be held at higher potential than the anode for proper Zener regulation. This marking complies with JEDEC DO-35 orientation standards and is visible under 10× magnification.
What is the maximum Zener current IZM for JANS1N4126-1/TR?
The maximum Zener current IZM for JANS1N4126-1/TR is 38.8 mA at 25 °C ambient, derived from its 500 mW power rating and 51 V Zener voltage (IZM = PM(AV)/VZ). Derating begins linearly above 50 °C lead temperature, reaching zero at 175 °C.
JANS1N4126-1/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):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 38.8 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)
JANS1N4126-1/TR FAQ
1.How can I place an order for JANS1N4126-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4126-1/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 JANS1N4126-1/TR reliable?
The price and inventory of JANS1N4126-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4126-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4126-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4126-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4126-1/TR?
JANS1N4126-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4126-1/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 JANS1N4126-1/TR?
For technical support, including JANS1N4126-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4126-1/TR requirements.
6.How does Aetrix verify that JANS1N4126-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4126-1/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 JANS1N4126-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4126-1/TR?
All JANS1N4126-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4126-1/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 JANS1N4126-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4126-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANS1N4126-1/TR Tags
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