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Microchip Technology JAN1N4126-1/TR
- Part No.:
- JAN1N4126-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4126-1/TR.pdf
- Description:
- DIODE ZENER 51V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,740
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Product details
Overview
JAN1N4126-1/TR from Microsemi is a 51 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JAN level per MIL-PRF-19500/435, with ±5% voltage tolerance, 300 Ω dynamic impedance at 250 mA, and max 40 µV/√Hz noise density above 6.8 V. It regulates voltage across wide current and temperature ranges in high-reliability power supply reference circuits.
For engineers reviewing the JAN1N4126-1/TR datasheet, JAN1N4126-1/TR pinout, JAN1N4126-1/TR application, or JAN1N4126-1/TR equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (250 °C/W junction-to-lead), noise performance, radiation hardness, and military-grade qualification status for aerospace and defense systems.
Technical Context
This device operates as a precision voltage reference in reverse-biased breakdown mode, with regulation established at IZT = 250 mA. Its metallurgical bond construction ensures stable long-term voltage drift and low noise-critical for analog sensing and calibration subsystems.
It exhibits a positive temperature coefficient of +0.100 %/°C, enabling predictable voltage shift over -65 °C to +175 °C operating range. The DO-35 hermetic glass package provides ESD immunity per MIL-STD-750 method 1020 and inherent radiation hardness per MicroNote 050.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51.0 V ±5% at 250 mA - sets precise reference point for feedback loops in regulated DC-DC converters. |
| Power Dissipation | 500 mW at 25 °C - supports stable operation in compact, convection-cooled designs without forced airflow. |
| Dynamic Impedance ZZT | 300 Ω at 250 mA - limits output voltage variation under load transients in precision reference applications. |
| Noise Density | ≤40 µV/√Hz - enables use in low-noise analog front-ends where reference stability affects ADC accuracy. |
| Junction Temp Range | -65 °C to +175 °C - qualifies for extended-temperature environments including avionics and downhole electronics. |
| Thermal Resistance RθJL | 250 °C/W (3/8″ lead length) - allows accurate thermal modeling when mounted on PCB with standard lead geometry. |
| Reverse Leakage IR | ≤0.01 µA at 38.8 V - ensures minimal quiescent current draw in battery-backed reference circuits. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package. Cathode indicated by band; banded end must be biased positive for Zener regulation. Weight ≈0.2 g. Lead finish: tin-lead or RoHS-compliant matte tin (commercial only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; defines 0 V reference for Zener voltage drop. |
| Cathode | Regulated output node | Banded end supplies stable 51 V relative to anode; used as voltage reference input to error amplifier or comparator. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Guarantees screening, testing, and traceability for defense/aerospace programs requiring assured reliability. |
| Metallurgical bond construction | Reduces long-term parameter drift and improves stability under thermal cycling and mechanical stress. |
| Low capacitance (typ. <2 pF) | Minimizes high-frequency coupling into reference nodes, preserving signal integrity in RF-adjacent circuits. |
| Radiation hardness (per MicroNote 050) | Enables operation in total ionizing dose (TID) environments up to 100 krad(Si), suitable for space-grade designs. |
| ESD immunity (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without degradation-eliminates need for external protection in handling-sensitive assemblies. |
Applications
| Avionics Power Reference | Satellite Voltage Calibration |
|---|---|
Use Scenario: Stable 51 V reference for analog-to-digital conversion in flight control sensor interfaces. IC Role / Device Role / Timing Role: Zener diode providing primary voltage reference for 16-bit SAR ADC biasing and gain scaling. Use Value: ±5% tolerance and +0.100 %/°C TC ensure <±0.5% total error over -55 °C to +125 °C operational envelope. | Use Scenario: On-board calibration source for telemetry voltage measurement chains in LEO satellites. IC Role / Device Role / Timing Role: Radiation-hardened Zener reference used during pre-launch ground calibration and in-orbit self-test routines. Use Value: Inherent TID hardness eliminates need for shielding or derating, reducing mass and complexity in payload design. |
| Defense Radar Bias Supply | Nuclear Instrumentation Reference |
Use Scenario: Regulation of gate bias voltage for GaN RF power amplifiers in phased-array radar transceivers. IC Role / Device Role / Timing Role: Zener clamp maintaining stable 51 V gate drive level despite pulsed current demands and thermal gradients. Use Value: 500 mW rating and 250 °C/W RθJL allow direct mounting to heatsinked chassis without thermal runaway risk. | Use Scenario: Precision reference for neutron detector pulse-height analysis circuitry in reactor monitoring systems. IC Role / Device Role / Timing Role: Low-noise (≤40 µV/√Hz), low-drift Zener establishing baseline for charge-integration amplifier offset correction. Use Value: Metallurgical bond construction ensures <10 ppm/1000 hrs long-term stability critical for decade-long deployment. |
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 DO-213AA surface-mount package; no axial leads. | Used where board space is constrained and reflow assembly required; not suitable for through-hole prototyping or manual repair. | Select when transitioning from through-hole to SMT production; requires PCB redesign and requalification. |
| JANTXV1N4126-1 | Identical DO-35 package and electrical parameters, but qualified to JANTXV level (enhanced screening vs. JAN). | Required for mission-critical subsystems demanding lower defect probability and extended lot traceability. | Choose for flight hardware or safety-critical control modules where failure modes require stricter process controls. |
Compared with JAN1N4126-1/TR, the 1N4126US-1 offers identical regulation performance in a smaller footprint but sacrifices serviceability, while JANTXV1N4126-1 adds screening rigor without altering electrical behavior-making it preferable for higher-assurance deployments.
Availability
JAN1N4126-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage calibration, and defense radar bias supply applications requiring stable component supply, full traceability, and compliance with MIL-PRF-19500/435 standards.
Supply support for JAN1N4126-1/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, radiation-hardened, and aerospace-grade components.
The 1N4099–1N4135 series was designed specifically for military and space applications requiring guaranteed performance across extreme temperatures, radiation exposure, and long service life without parameter drift.
FAQ
What is the Zener voltage tolerance for JAN1N4126-1/TR?
JAN1N4126-1/TR has a nominal Zener voltage of 51.0 V with a ±5% tolerance, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This tolerance applies at 25 °C with IZT = 250 mA and reflects the standard JAN-level specification for the 1N4126-1 variant.
Is JAN1N4126-1/TR RoHS compliant?
No, JAN1N4126-1/TR is not RoHS compliant. Per the nomenclature guide on page 2 of the datasheet, the "e3" suffix denotes RoHS compliance-and JAN1N4126-1/TR lacks that suffix. RoHS versions are only available for commercial-grade parts, not JAN-qualified devices.
What is the maximum Zener current IZM for JAN1N4126-1/TR?
The maximum Zener current IZM for JAN1N4126-1/TR is 40 mA, as listed in the Electrical Characteristics table on page 3. This value corresponds to the current at which the device delivers its rated 500 mW power dissipation at VZ = 51.0 V, assuming ideal thermal conditions.
Does JAN1N4126-1/TR have a defined temperature coefficient?
Yes, JAN1N4126-1/TR has a temperature coefficient αVZ of +0.100 %/°C, as shown in the Electrical Characteristics table. This positive coefficient means its Zener voltage increases predictably with rising junction temperature, enabling compensation in precision reference designs.
Can JAN1N4126-1/TR be used in surface-mount assemblies?
No, JAN1N4126-1/TR uses the axial-leaded DO-35 (DO-204AH) package and is not compatible with standard SMT reflow processes. For surface-mount equivalents, consider the 1N4126US-1 in DO-213AA package-but note it is not JAN-qualified and requires separate qualification.
JAN1N4126-1/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:
- ±5%
- Power - Max:
- -
- 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)
JAN1N4126-1/TR FAQ
1.How can I place an order for JAN1N4126-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4126-1/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 JAN1N4126-1/TR reliable?
The price and inventory of JAN1N4126-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4126-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4126-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4126-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4126-1/TR?
JAN1N4126-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4126-1/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 JAN1N4126-1/TR?
For technical support, including JAN1N4126-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4126-1/TR requirements.
6.How does Aetrix verify that JAN1N4126-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4126-1/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 JAN1N4126-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4126-1/TR?
All JAN1N4126-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4126-1/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 JAN1N4126-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4126-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4126-1/TR Tags
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