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Microchip Technology JANTX1N4126C-1
- Part No.:
- JANTX1N4126C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4126C-1.pdf
- Description:
- DIODE ZENER 51V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,599
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Product details
Overview
JANTX1N4126C-1 from Microsemi is a 51 V, ±2% 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 JANTX1N4126C-1 datasheet, JANTX1N4126C-1 pinout, JANTX1N4126C-1 application, or JANTX1N4126C-1 equivalent, key selection criteria include Zener voltage accuracy (±2%), low noise density (1 µV/√Hz), radiation hardness, hermetic glass 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 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, JANTX1N4126C-1 maintains regulation across wide current ranges (IZK to IZM = 38.8 mA) with minimal capacitance (<1 pF typical at 51 V) and low leakage (IR ≤ 0.01 µA at VR = 40 V), supporting stable reference generation in analog signal chains and power supervision circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51 V ±2% at 250 mA - enables precise 51 V rail clamping or reference generation with tight tolerance |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - defines maximum continuous thermal load on PCB |
| Dynamic Impedance ZZT | 300 Ω at 250 mA - determines output voltage variation under load transients |
| Noise Density ND | 1 µV/√Hz at 250 mA - critical for low-noise analog references and precision instrumentation |
| Reverse Leakage IR | ≤ 0.01 µA at 40 V - ensures minimal standby current in high-impedance bias networks |
| Temp Coefficient αVZ | +0.100 %/°C - quantifies voltage drift over operating temperature range (−65 to +175 °C) |
| Junction Temp Range | −65 to +175 °C - supports operation in extreme environmental conditions without parameter shift |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point in shunt regulator configuration |
| Cathode | Zener regulation node | Connected to regulated voltage rail; reverse-biased to maintain 51 V reference |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for aerospace and defense applications |
| Metallurgical bond construction | Ensures long-term stability of Zener voltage under thermal stress and radiation exposure |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter drift over decades in harsh environments |
| Low noise density (1 µV/√Hz) | Supports use in precision analog references where spectral purity affects ADC/DAC performance |
| Radiation hardness per MicroNote 050 | Enables deployment in space-grade systems without additional shielding or derating |
Applications
| Avionics Power Supervision | Satellite Voltage Reference |
|---|---|
Use Scenario: Monitoring 51 V bus integrity in flight control power distribution units. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage clamp and stable reference for comparator inputs. Use Value: ±2% tolerance and −65 to +175 °C operation ensure reliable fault detection across all mission phases. | Use Scenario: Generating stable 51 V reference for telemetry sensor excitation in LEO satellites. IC Role / Device Role / Timing Role: Precision Zener reference source for analog front-end calibration. Use Value: Radiation hardness and 1 µV/√Hz noise enable accurate sensor readings without periodic recalibration. |
| Ground-Based Radar Bias Supply | Tactical Radio RF Stage Protection |
Use Scenario: Stabilizing high-voltage bias rails for GaN amplifier stages in S-band radar transmitters. IC Role / Device Role / Timing Role: Zener clamp protecting amplifier gate drivers from transient overvoltage. Use Value: 500 mW rating and 300 Ω dynamic impedance limit voltage excursion during ESD events. | Use Scenario: Overvoltage protection for RF power amplifier DC feed lines in manpack radios. IC Role / Device Role / Timing Role: Fast-acting shunt limiter absorbing surge energy before it reaches sensitive PA circuitry. Use Value: Hermetic DO-35 package withstands humidity and thermal shock in field-deployed enclosures. |
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 51 V ±2% spec but in DO-213AA surface-mount package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or high-vibration mounting | Select when automated assembly and board space constraints outweigh mechanical robustness needs |
| JANS1N4126C-1 | Identical electrical specs but qualified to JANS (highest MIL reliability level); higher screening cost and longer lead time | Required for Class K spaceflight hardware; overqualified for ground-based military systems | Select only when JANS-level radiation testing and lot traceability are mandated by program requirements |
Compared with JANTX1N4126C-1, 1N4126US-1 trades axial mechanical stability for SMT manufacturability, while JANS1N4126C-1 adds radiation assurance overhead without improving baseline regulation performance-making JANTX1N4126C-1 the optimal balance of reliability, cost, and availability for most defense electronics.
Availability
JANTX1N4126C-1 is available at Aetrix Electronics and suitable for avionics power supervision, satellite voltage reference, and ground-based radar bias supply requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4126C-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 and mixed-signal components for aerospace, defense, and industrial markets.
The JANTX1N4126C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in mission-critical systems where parameter stability under thermal, mechanical, and radiation stress is non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4126C-1?
JANTX1N4126C-1 has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per Microsemi's nomenclature. This corresponds to a guaranteed 51 V regulation window of 49.98 V to 52.02 V at 250 mA test current and 25 °C ambient, verified per MIL-PRF-19500/435 screening.
Is JANTX1N4126C-1 RoHS compliant?
No, JANTX1N4126C-1 is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions of this series; JANTX-level devices retain tin-lead plating per MIL-STD-750 method 2026 to ensure solderability and reliability under thermal cycling, and are explicitly excluded from RoHS compliance.
What is the maximum Zener current IZM for JANTX1N4126C-1?
The maximum Zener current IZM for JANTX1N4126C-1 is 38.8 mA, derived from its 500 mW power rating and 51 V nominal Zener voltage (IZM = PM(AV)/VZ ≈ 500 mW / 51 V). This value is confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1.
Does JANTX1N4126C-1 have radiation hardness certification?
Yes, JANTX1N4126C-1 is inherently radiation hard as documented in Microsemi MicroNote 050. Its metallurgically bonded glass construction and DO-35 hermetic package provide proven total ionizing dose (TID) tolerance suitable for low-earth orbit and avionics applications without additional qualification testing.
What is the thermal resistance junction-to-lead for JANTX1N4126C-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4126C-1 is 250 °C/W when measured with 3/8 inch (10 mm) lead length from body, per Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value governs heat transfer path efficiency in chassis-mounted or heatsink-connected configurations.
JANTX1N4126C-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:
- ±2%
- 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)
JANTX1N4126C-1 FAQ
1.How can I place an order for JANTX1N4126C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4126C-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 JANTX1N4126C-1 reliable?
The price and inventory of JANTX1N4126C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4126C-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4126C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4126C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4126C-1?
JANTX1N4126C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4126C-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 JANTX1N4126C-1?
For technical support, including JANTX1N4126C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4126C-1 requirements.
6.How does Aetrix verify that JANTX1N4126C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4126C-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 JANTX1N4126C-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4126C-1?
All JANTX1N4126C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4126C-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 JANTX1N4126C-1 part is unused and in its original packaging.
Return procedure for JANTX1N4126C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4126C-1 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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