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Microchip Technology JANTX1N4127-1
- Part No.:
- JANTX1N4127-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4127-1.pdf
- Description:
- DIODE ZENER 56V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,185
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Product details
Overview
JANTX1N4127-1 from Microsemi is a 500 mW, 56 V, ±5% tolerance metallurgically bonded glass Zener diode in DO-35 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 in aerospace power supply reference circuits.
For engineers reviewing the JANTX1N4127-1 datasheet, JANTX1N4127-1 pinout, JANTX1N4127-1 application, or JANTX1N4127-1 equivalent, key selection criteria include its 56 V nominal Zener voltage, 300 Ω ZZT at IZT = 250 mA, ±5% tolerance, JANTX-level military qualification, and DO-35 axial-leaded hermetic glass package - all critical for precision voltage reference and overvoltage protection in harsh-environment analog systems.
Technical Context
This device operates as a reverse-biased voltage regulator with a specified Zener voltage of 56 V at 250 mA test current (IZT), exhibiting a positive temperature coefficient of +0.100 %/°C above 50 V. Its metallurgical bond construction ensures low noise density (≤1 µV/√Hz below 6.8 V, scaling per datasheet) and inherent radiation hardness per MicroNote 050.
The JANTX1N4127-1 is designed for operation within strict thermal limits: 300 °C/W junction-to-ambient thermal resistance on FR4 board, linear power derating from 500 mW at 25 °C to zero at 175 °C, and maximum reverse leakage of 0.01 µA at VR = 42.6 V - enabling stable regulation under wide current and temperature excursions in mission-critical analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 56 V at IZT = 250 mA - defines precise regulation point for reference and clamp applications |
| Power Dissipation | 500 mW at TC = 25 °C - sets maximum continuous thermal load before derating begins |
| Zener Impedance (ZZT) | 300 Ω at IZT = 250 mA - determines output voltage stability under varying load current |
| Reverse Leakage (IR) | ≤0.01 µA at VR = 42.6 V - ensures minimal standby current in high-impedance bias networks |
| Temp Coefficient (αVZ) | +0.100 %/°C - quantifies voltage drift with temperature, critical for precision references |
| Max Zener Current (IZM) | 42.6 mA at 25 °C - defines absolute DC current limit before thermal runaway risk |
| Junction Temp Range | -65 °C to +175 °C - enables operation in extended environmental conditions including space and avionics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by band; banded end must be biased positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in regulation loop |
| Cathode | Regulated output node | Provides stable 56 V reference when reverse-biased; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense/aerospace use |
| Metallurgical bond construction | Enables low noise density (≤1 µV/√Hz) and radiation hardness per MicroNote 050 |
| Hermetic glass DO-35 package | Ensures long-term reliability and moisture resistance in high-humidity environments |
| ±5% Zener voltage tolerance | Meets standard precision requirement for regulated power supply feedback networks |
| Non-ESD-sensitive design | Withstands handling without special ESD controls per MIL-STD-750 Method 1020 |
Applications
| Avionics Power Reference | Satellite Voltage Clamp |
|---|---|
Use Scenario: Providing stable 56 V reference for analog-to-digital converter biasing in flight control computers. IC Role / Device Role / Timing Role: Precision Zener reference diode establishing accurate input scaling voltage. Use Value: Maintains ≤0.100 %/°C drift across -55 °C to +125 °C operating range, ensuring ADC linearity compliance. | Use Scenario: Clamping transient overvoltage on 48 V bus during solar array surge events in LEO satellites. IC Role / Device Role / Timing Role: High-reliability shunt regulator absorbing energy above 56 V threshold. Use Value: Withstands 42.6 mA max Zener current and operates up to +175 °C junction temperature in vacuum. |
| Rad-Hard Instrumentation | Tactical Radio Bias Network |
Use Scenario: Generating stable bias voltages for radiation-tolerant op-amps in nuclear monitoring sensors. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference supplying fixed bias points. Use Value: Inherent radiation hardness eliminates need for additional shielding or derating in gamma fields. | Use Scenario: Setting reference voltage for RF power amplifier stage biasing in manpack radios. IC Role / Device Role / Timing Role: Temperature-stable voltage reference in compact, ruggedized enclosure. Use Value: DO-35 axial leads enable secure mechanical mounting and vibration resistance in field-deployed units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4127US | Same 56 V VZ and JANTXV qualification, but in surface-mount DO-213AA package | Requires PCB rework for SMT assembly; lacks axial lead mechanical robustness | Select when automated assembly and board space constraints outweigh mechanical mounting needs |
| CMZ56 | Commercial-grade 56 V Zener, 5% tolerance, DO-35, no military qualification or radiation hardening | Not suitable for aerospace or defense programs requiring MIL-PRF-19500 compliance | Select only for cost-sensitive industrial prototypes where JANTX screening is unnecessary |
Compared with JANTX1N4127-1, 1N4127US offers identical electrical specs in a surface-mount form factor ideal for high-density layouts, while CMZ56 provides lower-cost commercial performance without military screening or radiation assurance - making JANTX1N4127-1 the sole choice for JANTX-compliant, rad-hard, axial-leaded 56 V regulation.
Availability
JANTX1N4127-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage clamp, and rad-hard instrumentation requiring stable component supply with full traceability and long-lifecycle support.
Supply support for JANTX1N4127-1 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTX1N4127-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation and overvoltage protection in mission-critical analog systems exposed to extreme temperature, radiation, and mechanical stress.
FAQ
What is the Zener voltage tolerance for JANTX1N4127-1?
JANTX1N4127-1 has a nominal Zener voltage of 56 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under standard test conditions at 25 °C with IZT = 250 mA, and is consistent across all JANTX-level variants in the 1N4099–1N4135 series.
Is JANTX1N4127-1 RoHS compliant?
No, JANTX1N4127-1 is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, RoHS compliance (suffix "e3") is available only on commercial-grade versions of this series. The JANTX prefix indicates military qualification under MIL-PRF-19500/435, which retains tin-lead plating per MIL-STD-750 Method 2026 for solderability and reliability in high-reliability applications.
What is the maximum Zener current (IZM) for JANTX1N4127-1 at 25 °C?
The maximum Zener current IZM for JANTX1N4127-1 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 is derived from the 500 mW power rating and the 56 V Zener voltage (IZM = PM(AV)/VZ ≈ 0.5 W / 56 V), and represents the absolute DC current limit before thermal derating begins.
Does JANTX1N4127-1 have radiation hardness certification?
Yes, JANTX1N4127-1 possesses inherent radiation hardness documented in Microsemi MicroNote 050. Its metallurgically bonded construction and hermetic DO-35 package contribute to tolerance against total ionizing dose (TID) and single-event effects, making it suitable for space and nuclear instrumentation applications without requiring external hardening measures.
What is the thermal resistance junction-to-lead (RθJL) for JANTX1N4127-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4127-1 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the body, as stated in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This parameter is critical for calculating junction temperature rise under sustained Zener current and informs heatsinking requirements in high-power analog designs.
JANTX1N4127-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- 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 FAQ
1.How can I place an order for JANTX1N4127-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4127-1 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 JANTX1N4127-1 reliable?
The price and inventory of JANTX1N4127-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4127-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4127-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4127-1?
JANTX1N4127-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4127-1 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 JANTX1N4127-1?
For technical support, including JANTX1N4127-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4127-1 requirements.
6.How does Aetrix verify that JANTX1N4127-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4127-1 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 JANTX1N4127-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4127-1?
All JANTX1N4127-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4127-1, 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 JANTX1N4127-1 part is unused and in its original packaging.
Return procedure for JANTX1N4127-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4127-1 Tags
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