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Microchip Technology JANTX1N4126D-1
- Part No.:
- JANTX1N4126D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4126D-1.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,987
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Product details
Overview
JANTX1N4126D-1 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, reference circuits, and overvoltage protection.
For engineers reviewing the JANTX1N4126D-1 datasheet, JANTX1N4126D-1 pinout, JANTX1N4126D-1 application, or JANTX1N4126D-1 equivalent, key selection criteria include Zener voltage accuracy (±1%), low noise density (1 µV/√Hz), radiation hardness, hermetic DO-35 packaging, and MIL-spec thermal derating behavior.
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 temperature coefficient of +0.100 %/°C and dynamic impedance of 300 Ω at IZT. 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 maintains regulation across wide current ranges (IZK to IZM = 38.8 mA max) and ambient temperatures (–65 °C to +175 °C), with noise density specified at 1 µV/√Hz - among the lowest in the 1N41xx series for voltages ≥43 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±1% at 250 mA - enables precise 51 V reference generation with minimal calibration drift. |
| Power Dissipation | 500 mW @ TL = 25 °C, linearly derated to zero at 175 °C - supports robust thermal design in sealed enclosures. |
| Dynamic Impedance ZZT | 300 Ω @ 250 mA - limits output voltage variation under load transients in feedback loops. |
| Noise Density ND | 1 µV/√Hz @ 25 °C - critical for low-noise analog references and precision instrumentation front-ends. |
| Temp Coefficient αVZ | +0.100 %/°C - predictable positive drift simplifies temperature compensation in wide-range environments. |
| Reverse Leakage IR | ≤0.01 µA @ 38.8 V - ensures negligible standby current in high-impedance bias networks. |
| Junction Temp Range | –65 °C to +175 °C - validated for extended operation in avionics, downhole, and space-qualified systems. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by color band; banded end must be held positive relative to anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; defines return path for Zener current. |
| Cathode | Regulated output node | Banded terminal; supplies stable 51 V when reverse-biased and current-limited externally. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for military/aerospace use, including screening, lot traceability, and failure analysis reporting. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and long-term bias stress. |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in precision voltage references and sensor excitation circuits. |
| Radiation hardness | Inherently tolerant per Microsemi MicroNote 050 - suitable for low-dose-rate space applications without shielding overhead. |
| Low capacitance | Typical <1.5 pF - preserves high-frequency stability in RF detector biasing and fast transient clamp circuits. |
Applications
| Avionics Power Monitoring | Satellite Sensor Reference |
|---|---|
Use Scenario: Monitoring 28 V DC bus voltage in flight control computers using resistive divider + comparator. IC Role / Device Role / Timing Role: Precision 51 V Zener reference sets comparator threshold with minimal drift over –55 °C to +125 °C. Use Value: ±1% tolerance and +0.100 %/°C TC ensure trip point remains within 2.5% error across full operational range. | Use Scenario: Providing stable excitation voltage to radiation-hardened RTD or strain gauge in LEO satellite payloads. IC Role / Device Role / Timing Role: Low-noise (1 µV/√Hz), low-capacitance shunt regulator establishes clean 51 V bias for bridge sensing. Use Value: Metallurgical bond and inherent radiation hardness eliminate need for redundant regulators or shielding mass. |
| Downhole Telemetry Protection | Tactical Radio Bias Supply |
Use Scenario: Overvoltage clamping on 48 V telemetry lines exposed to lightning-induced surges in oil/gas wellheads. IC Role / Device Role / Timing Role: Fast-response shunt limiter absorbing transient energy while maintaining 51 V clamp level. Use Value: Hermetic DO-35 package withstands 175 °C junction temperature and H2S-rich environments without degradation. | Use Scenario: Generating local 51 V supply for GaN PA bias sequencing in manpack radios operating from 24 V battery. IC Role / Device Role / Timing Role: High-stability Zener reference feeds linear regulator controlling gate voltage ramp rate. Use Value: Low dynamic impedance (300 Ω) ensures minimal droop during rapid PA enable transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4126US-1 | Same electrical specs, but in surface-mount DO-213AA package; no axial leads. | Required for automated SMT assembly; unsuitable for through-hole prototyping or high-vibration mechanical retention. | Select when board space is constrained and reflow compatibility is mandatory. |
| JAN1N4126D-1 | Identical electrical and mechanical specs, but qualified only to JAN level (less stringent screening than JANTX). | Acceptable for non-critical subsystems where full JANTX burn-in and lot acceptance testing are not required. | Select when cost sensitivity outweighs need for extended reliability validation. |
Compared with JANTX1N4126D-1, the 1N4126US-1 enables PCB miniaturization at the expense of manual assembly flexibility, while JAN1N4126D-1 reduces procurement cost and lead time without sacrificing Zener performance - both require identical external current limiting and thermal management.
Availability
JANTX1N4126D-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor reference, and downhole telemetry protection requiring stable component supply, full MIL-spec traceability, and guaranteed long-term obsolescence support.
Supply support for JANTX1N4126D-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) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
JANTX1N4126D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for mission-critical voltage regulation where parametric stability, hermeticity, and radiation tolerance are non-negotiable.
FAQ
What is the Zener voltage tolerance for JANTX1N4126D-1?
JANTX1N4126D-1 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 supports precision reference designs without post-manufacture calibration.
Is JANTX1N4126D-1 RoHS compliant?
No, JANTX1N4126D-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (suffix "e3") are available only for commercial-grade parts, not for MIL-qualified JANTX-level devices like JANTX1N4126D-1. The part uses tin-lead plating per MIL-STD-750 method 2026, consistent with legacy military requirements.
What is the maximum Zener current IZM for JANTX1N4126D-1?
The maximum Zener current IZM for JANTX1N4126D-1 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 dissipates its rated 500 mW at VZ = 51.0 V, and must be respected in external current-limiting resistor calculations.
Does JANTX1N4126D-1 have radiation hardness certification?
Yes, JANTX1N4126D-1 is inherently radiation hard, as documented in Microsemi MicroNote 050 referenced in the datasheet. While not individually tested per MIL-STD-883, its metallurgically bonded structure and DO-35 hermetic package provide proven tolerance to total ionizing dose (TID) and displacement damage, making it suitable for low-dose-rate space applications.
What is the thermal resistance junction-to-lead (RθJL) for JANTX1N4126D-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4126D-1 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from body, per the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value guides heatsinking decisions when mounting to metal chassis or thermally conductive substrates.
JANTX1N4126D-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- 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 FAQ
1.How can I place an order for JANTX1N4126D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4126D-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 JANTX1N4126D-1 reliable?
The price and inventory of JANTX1N4126D-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4126D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4126D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4126D-1?
JANTX1N4126D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4126D-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 JANTX1N4126D-1?
For technical support, including JANTX1N4126D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4126D-1 requirements.
6.How does Aetrix verify that JANTX1N4126D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4126D-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 JANTX1N4126D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4126D-1?
All JANTX1N4126D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4126D-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 JANTX1N4126D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4126D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4126D-1 Tags
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