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Microchip Technology JANTX1N4127-1/TR
- Part No.:
- JANTX1N4127-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4127-1/TR.pdf
- Description:
- DIODE ZENER 56V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,653
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Product details
Overview
JANTX1N4127-1/TR from Microsemi is a 56 V, ±5% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation. It delivers 42.6 mA maximum Zener current at 25 °C, exhibits 300 Ω dynamic impedance at 250 mA test current, and maintains stable regulation across -65 °C to +175 °C junction temperature range - used in precision reference and overvoltage protection circuits in aerospace power supplies.
For engineers reviewing the JANTX1N4127-1/TR datasheet, JANTX1N4127-1/TR pinout, JANTX1N4127-1/TR application, or JANTX1N4127-1/TR equivalent, key selection criteria include Zener voltage accuracy, thermal derating behavior, MIL-spec qualification level, noise density at operating current, and DO-35 mechanical compatibility with legacy through-hole layouts.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 56 V at 250 mA test current (IZT), exhibiting a positive temperature coefficient of +0.100 %/°C above 47 V. Its metallurgical bond construction ensures low noise density (1 µV/√Hz typical at lower voltages, rising to ≤40 µV/√Hz at ≥6.8 V) and radiation hardness per Microsemi MicroNote 050.
The JANTX1N4127-1/TR is rated for 500 mW average power dissipation at 25 °C lead temperature, linearly derated to zero at 175 °C, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length. It features hermetically sealed glass packaging, cathode band polarity marking, and RoHS-compliant plating only on commercial-grade variants - not applicable to this JANTX-level part.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V ±5% at 250 mA - defines precise regulation point for feedback loops and clamping thresholds |
| Power Dissipation | 500 mW at 25 °C, derated linearly to zero at 175 °C - sets thermal design margin for PCB layout and heatsinking |
| Dynamic Impedance (ZZT) | 300 Ω at 250 mA - determines output voltage stability under load transients |
| Max Reverse Current (IR) | 10 nA at 42.6 V - ensures minimal leakage in high-impedance bias networks |
| Junction Temp Range | -65 °C to +175 °C - supports operation in extreme environments including space and military avionics |
| Temp Coefficient (αVZ) | +0.100 %/°C - enables predictable drift compensation in temperature-critical references |
| Noise Density (ND) | ≤40 µV/√Hz (typical at 56 V) - critical for low-noise analog references and sensor excitation |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package: hermetically sealed, tin-lead plated leads, cathode indicated by single black band. Body diameter 1.42–2.29 mm, overall length 3.56–5.08 mm, lead length ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated voltage node - reverse-biased to maintain 56 V reference |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense systems requiring extended lifetime and failure-rate control |
| Metallurgical bond construction | Enables low noise density and radiation hardness without epoxy-induced degradation |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter shift over decades in harsh storage or operational environments |
| 1% to 5% Zener tolerance options | Supports both cost-sensitive and precision applications via same base die and process |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Eliminates need for ESD handling protocols during manual assembly or rework |
Applications
| Avionics Power Reference | Satellite Bus Voltage Clamp |
|---|---|
Use Scenario: Regulating 56 V bus in airborne DC-DC converter feedback loop under wide temperature cycling (-55 °C to +125 °C). IC Role / Device Role / Timing Role: Precision Zener reference providing stable voltage setpoint to error amplifier. Use Value: JANTX1N4127-1/TR's +0.100 %/°C tempco and 500 mW rating enable <±1.2% total drift over full range without external compensation. | Use Scenario: Clamping transient overvoltage on 48 V satellite power bus during solar array switching events. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing surge energy while holding rail within safe limits. Use Value: 56 V breakdown with 300 Ω ZZT ensures fast response and minimal overshoot during 100 ns–1 µs transients. |
| Ground-Based Radar Bias Supply | Nuclear Instrumentation Channel Reference |
Use Scenario: Generating stable bias voltage for GaN RF amplifier stages in ground-based radar transmitters. IC Role / Device Role / Timing Role: Low-noise voltage reference for gate bias network ensuring consistent RF gain and linearity. Use Value: ≤40 µV/√Hz noise density prevents AM-to-PM conversion and preserves signal integrity at L-band frequencies. | Use Scenario: Providing calibrated reference in radiation-hardened neutron detection front-end electronics. IC Role / Device Role / Timing Role: Primary voltage standard in analog signal chain where long-term drift must be minimized. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in mixed-field environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4127US (Microchip) | Same 56 V nominal Zener, but DO-213AA surface-mount package; no MIL qualification | Lacks JANTX-level screening and radiation hardness; suitable only for commercial industrial use | Select when board space is constrained and MIL-spec compliance is not required |
| JAN1N4127-1 (Microsemi) | Identical electrical specs and DO-35 package, but qualified only to JAN level (lower screening than JANTX) | Reduced burn-in and environmental test coverage; acceptable for non-critical military subsystems | Select when cost reduction is prioritized and full JANTX reliability assurance is unnecessary |
Compared with JANTX1N4127-1/TR, the 1N4127US trades MIL qualification and axial-leaded mounting for SMT compatibility, while JAN1N4127-1 retains the same package and function but reduces reliability assurance scope - making JANTX1N4127-1/TR the only choice for programs requiring verified JANTX-level performance and traceability.
Availability
JANTX1N4127-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage clamp, and nuclear instrumentation channel reference requiring stable component supply across extended product lifecycles and rigorous procurement controls.
Supply support for JANTX1N4127-1/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTX1N4127-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where long-term stability, radiation tolerance, and guaranteed parametric performance are mandatory.
FAQ
What is the Zener voltage tolerance for JANTX1N4127-1/TR?
JANTX1N4127-1/TR has a nominal Zener voltage of 56 V with a ±5% tolerance, as defined by its JEDEC 1N4127 designation and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at 250 mA test current and 25 °C ambient, and is standard for the JAN/JANTX-level variants unless otherwise marked with C (2%) or D (1%) suffixes - which JANTX1N4127-1/TR does not carry.
Is JANTX1N4127-1/TR RoHS compliant?
No, JANTX1N4127-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (marked with "e3" suffix) are available only on commercial-grade parts. The JANTX qualification level requires tin-lead plating for solderability and reliability validation per MIL-STD-750, and therefore uses non-RoHS-compliant leaded terminations.
What is the maximum Zener current for JANTX1N4127-1/TR at 25 °C?
The maximum Zener current (IZM) for JANTX1N4127-1/TR is 42.6 mA at 25 °C, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the 500 mW power rating divided by the 56 V Zener voltage, and assumes thermal equilibrium at lead temperature - actual usable current decreases with rising ambient or PCB temperature due to linear derating.
Does JANTX1N4127-1/TR have a specified noise density?
Yes, JANTX1N4127-1/TR has a noise density specification: ≤40 µV/√Hz for devices rated 6.8 V and above, as stated in the FEATURES section on page 1 of T4-LDS-0245-2 Rev. 1. While the exact value at 56 V is not tabulated separately, it falls within this upper bound, making JANTX1N4127-1/TR suitable for low-noise reference applications where broadband noise must be minimized.
What is the thermal resistance junction-to-lead for JANTX1N4127-1/TR?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4127-1/TR is 250 °C/W, measured at 3/8 inch (10 mm) lead length from the body, as listed in the MAXIMUM RATINGS table on page 1 of T4-LDS-0245-2 Rev. 1. This value is critical for calculating junction temperature rise under load and verifying compliance with the 175 °C absolute maximum rating during sustained operation.
JANTX1N4127-1/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):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 300 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 42.6 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)
JANTX1N4127-1/TR FAQ
1.How can I place an order for JANTX1N4127-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4127-1/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 JANTX1N4127-1/TR reliable?
The price and inventory of JANTX1N4127-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4127-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4127-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4127-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4127-1/TR?
JANTX1N4127-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4127-1/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 JANTX1N4127-1/TR?
For technical support, including JANTX1N4127-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4127-1/TR requirements.
6.How does Aetrix verify that JANTX1N4127-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4127-1/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 JANTX1N4127-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4127-1/TR?
All JANTX1N4127-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4127-1/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 JANTX1N4127-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4127-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4127-1/TR Tags
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