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Microchip Technology JANTX1N4126D-1/TR
- Part No.:
- JANTX1N4126D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4126D-1/TR.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,793
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Product details
Overview
JANTX1N4126D-1/TR from Microsemi is a 51 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4126D-1/TR datasheet, JANTX1N4126D-1/TR pinout, JANTX1N4126D-1/TR application, or JANTX1N4126D-1/TR 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 51.0 V at 250 mA test current, exhibiting a dynamic impedance of 300 Ω and temperature coefficient of +0.100 %/°C. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation in the reverse-biased breakdown region, JANTX1N4126D-1/TR maintains regulation across wide current ranges (IZK to IZM = 38.8 mA max) and supports low-noise analog references due to its 1 µV/√Hz noise density - verified at 1 kHz–3 kHz bandwidth per Figure 1 test circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±1% at 250 mA - enables precise reference generation in regulated DC-DC feedback paths |
| Power Dissipation | 500 mW @ TL = 25 °C, linearly derated to zero at 175 °C - defines maximum safe continuous power in lead-mounted configurations |
| Dynamic Impedance ZZT | 300 Ω @ 250 mA - determines output voltage variation under load transients in shunt regulation |
| Noise Density ND | 1 µV/√Hz @ 1–3 kHz - critical for low-noise analog references and precision instrumentation circuits |
| Temp Coefficient αVZ | +0.100 %/°C - quantifies voltage drift over temperature; used to calculate worst-case regulation error in wide-temp environments |
| Max Reverse Current IR | 10 µA @ 38.8 V - specifies leakage below knee voltage, affecting standby power and stability in high-impedance bias networks |
| Junction Temp Range | −65 °C to +175 °C - supports operation in extreme environments including space and engine bay applications |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by band; leads are tin-lead plated and solderable per MIL-STD-750 method 2026. Weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for Zener regulation |
| Cathode (banded end) | Regulated output node | Provides stable 51 V output when reverse-biased; must be held positive relative to anode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for aerospace and defense programs requiring high reliability |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and long-term bias stress |
| 1% Zener voltage tolerance (D suffix) | Reduces need for external trimming in precision reference designs; improves initial accuracy vs. standard 5% parts |
| Radiation hardness per MicroNote 050 | Enables use in low-earth orbit and nuclear-hardened systems without additional shielding or derating |
| Low capacitance (typ. <1.5 pF) | Minimizes high-frequency loading on reference nodes and preserves loop stability in fast-switching regulators |
Applications
| Aerospace Power Reference | Defense System Bias Network |
|---|---|
Use Scenario: Providing stable 51 V reference for ADC front-end conditioning in satellite telemetry modules operating across −55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt voltage reference establishing absolute scaling for analog-to-digital conversion. Use Value: 1% tolerance and +0.100 %/°C TC enable ≤±1.8% total error over full temperature range without calibration. | Use Scenario: Regulating bias voltage for RF power amplifier stages in tactical radio transceivers exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining constant gate bias despite input ripple and load transients. Use Value: 300 Ω dynamic impedance and 1 µV/√Hz noise ensure minimal AM modulation sideband degradation in transmit chain. |
| Avionics Sensor Excitation | Nuclear Instrumentation Supply |
Use Scenario: Supplying excitation voltage to piezoresistive pressure sensors in flight control computers where EMI immunity and long-term drift matter. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source for bridge sensor excitation. Use Value: Hermetic DO-35 package and metallurgical bond prevent parameter shift from humidity ingress or mechanical fatigue over 20+ year service life. | Use Scenario: Generating calibrated reference in radiation monitoring equipment deployed near reactor cores or in particle accelerators. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference used in charge-integration amplifiers for ionization chamber readout. Use Value: Inherent radiation hardness eliminates need for redundant shielding or frequent recalibration after neutron/gamma exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4126D-1/TR | Higher screening level (JANTXV vs JANTX); tighter lot acceptance testing, extended burn-in, and enhanced quality assurance per MIL-PRF-19500/435 | Required for mission-critical avionics where failure probability must be <10−6/hour | Select when program spec mandates JANTXV-level reliability; same electrical specs and DO-35 footprint |
| 1N4126US-1 | Same Zener voltage and tolerance but in surface-mount DO-213AA package; no axial leads; RoHS-compliant matte-tin plating | Suitable for automated SMT assembly; not interchangeable in through-hole designs without board rework | Choose for space-constrained PCBs or high-volume production where reflow compatibility is essential |
Compared with JANTX1N4126D-1/TR, the JANTXV variant adds process controls for ultra-high reliability without changing regulation performance, while the 1N4126US-1 offers identical electrical behavior in a surface-mount form factor - enabling layout flexibility but requiring physical redesign.
Availability
JANTX1N4126D-1/TR is available at Aetrix Electronics and suitable for aerospace power reference, defense system bias network, and avionics sensor excitation applications requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4126D-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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N4099–1N4135 series was designed specifically for military-grade voltage regulation where long-term stability, hermetic sealing, and proven qualification to MIL-PRF-19500/435 are mandatory - not merely commercial-grade substitutes.
FAQ
What is the Zener voltage tolerance of JANTX1N4126D-1/TR?
JANTX1N4126D-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 Rev. 1, where VZ = 51.0 V at IZT = 250 mA with 1% tolerance. The tighter tolerance reduces calibration burden in precision reference designs compared to standard 5% variants like JANTX1N4126-1/TR.
Is JANTX1N4126D-1/TR radiation hardened?
Yes, JANTX1N4126D-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050, referenced in the Applications/Benefits section of T4-LDS-0245-2. Its metallurgically bonded glass construction and DO-35 hermetic package provide resistance to total ionizing dose (TID) and displacement damage, making it suitable for low-earth orbit and nuclear instrumentation without additional hardening measures.
What is the maximum Zener current IZM for JANTX1N4126D-1/TR?
The maximum Zener current IZM for JANTX1N4126D-1/TR is 38.8 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device reaches its rated 500 mW power dissipation at 51.0 V, assuming ideal thermal conditions. Derating applies above +50 °C lead temperature.
Does JANTX1N4126D-1/TR have RoHS compliance?
No, JANTX1N4126D-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, not for JAN/JANTX/JANTXV/JANS qualified devices. JANTX1N4126D-1/TR uses traditional tin-lead plating per MIL-STD-750 method 2026 and is intended for high-reliability applications where Pb-free requirements are waived.
What package type does JANTX1N4126D-1/TR use?
JANTX1N4126D-1/TR uses the hermetically sealed axial-leaded DO-35 (also designated DO-204AH) glass package, as stated in the Mechanical and Packaging section on page 2 of T4-LDS-0245-2 Rev. 1. Dimensions are provided on page 5, with body diameter 1.42–2.29 mm and overall length 25.4–38.1 mm. The cathode is marked by a visible band on the glass envelope.
JANTX1N4126D-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:
- ±1%
- 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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4126D-1/TR FAQ
1.How can I place an order for JANTX1N4126D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4126D-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 JANTX1N4126D-1/TR reliable?
The price and inventory of JANTX1N4126D-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 JANTX1N4126D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4126D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4126D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4126D-1/TR?
JANTX1N4126D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4126D-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 JANTX1N4126D-1/TR?
For technical support, including JANTX1N4126D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4126D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4126D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4126D-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 JANTX1N4126D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4126D-1/TR?
All JANTX1N4126D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4126D-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 JANTX1N4126D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4126D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4126D-1/TR Tags
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