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Microchip Technology JANTX1N4124D-1/TR
- Part No.:
- JANTX1N4124D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4124D-1/TR.pdf
- Description:
- DIODE ZENER 43V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,903
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Product details
Overview
JANTX1N4124D-1/TR from Microsemi is a 43.0 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4124D-1/TR datasheet, JANTX1N4124D-1/TR pinout, JANTX1N4124D-1/TR application, or JANTX1N4124D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), dynamic impedance (250 Ω at 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.095 %/°C), and military-grade thermal derating behavior.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 43.0 V at 250 mA test current (IZT), exhibiting low noise density (1 µV/√Hz) and stable regulation across -65 °C to +175 °C junction temperature range. Its metallurgical bond construction ensures reliability under thermal cycling and radiation exposure.
The JANTX1N4124D-1/TR features a cathode band polarity marking, requires reverse-biased operation (banded end positive), and delivers regulated output with maximum reverse leakage of 0.01 µA at 32.7 V (VR), while maintaining dynamic impedance of 250 Ω at IZT and 40 Ω at IZM (32.7 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43.0 V at 250 mA - precise reference point for regulated output under nominal bias |
| Zener Tolerance | ±1% - enables tight voltage control in critical analog and power monitoring circuits |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact, unheatsinked designs |
| Dynamic Impedance (ZZT) | 250 Ω at 250 mA - determines load regulation error under varying current conditions |
| Noise Density (ND) | 1 µV/√Hz - minimizes voltage reference noise in precision instrumentation and ADC references |
| Temp. Coefficient (αVZ) | +0.095 %/°C - quantifies drift magnitude over temperature for stability budgeting |
| Max Reverse Leakage (IR) | 0.01 µA at 32.7 V - ensures minimal quiescent current in standby or low-power modes |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential; defines Zener breakdown polarity |
| Cathode | Regulated output node | Banded end; connected to input supply; maintains 43.0 V relative to anode when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense applications requiring extended lifetime and radiation hardness |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress |
| 1 µV/√Hz noise density | Enables use in low-noise voltage references for high-resolution data acquisition systems |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades in harsh environments |
| 1% Zener voltage tolerance | Reduces need for post-production trimming in precision power supply feedback loops |
Applications
| Avionics Power Monitoring | Satellite DC-DC Converter Reference |
|---|---|
Use Scenario: Real-time monitoring of 28 V aircraft bus voltage using a resistive divider into a precision ADC. IC Role / Device Role / Timing Role: Zener reference diode providing stable 43.0 V reference for scaling and fault detection circuitry. Use Value: ±1% tolerance and +0.095 %/°C TC ensure <±2% total error over -55 °C to +125 °C operating range without calibration. | Use Scenario: Feedback voltage reference in radiation-hardened isolated DC-DC converter for LEO satellite subsystems. IC Role / Device Role / Timing Role: Shunt regulator establishing precise output voltage setpoint via optocoupler feedback path. Use Value: Metallurgical bond and JANTX qualification guarantee operational integrity after 100 krad(Si) total ionizing dose exposure. |
| Tactical Radio RF Power Amplifier Bias | Nuclear Instrumentation Calibration Source |
Use Scenario: Stable gate bias generation for GaN HEMT drivers in man-portable HF/VHF transceivers. IC Role / Device Role / Timing Role: Low-noise Zener source supplying fixed bias voltage to amplifier stage under wide temperature swing. Use Value: 1 µV/√Hz noise density prevents AM sideband degradation in sensitive receiver front-ends. | Use Scenario: Portable gamma spectrometer requiring traceable, long-term stable reference for pulse-height analysis. IC Role / Device Role / Timing Role: Primary voltage reference for ADC full-scale calibration in field-deployable nuclear detection equipment. Use Value: Hermetic DO-35 package and MIL-qualified construction ensure <0.5% parameter drift over 15-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4124US-1 | Same 43.0 V, 1% spec, but in DO-213AA surface-mount package; no axial leads | Used where board space is constrained and reflow assembly required; lacks axial mounting flexibility | Select when automated SMT production is mandatory and thermal mass constraints allow lower peak power handling |
| JAN1N4124D-1 | Identical electrical specs and DO-35 package, but qualified only to JAN level (not JANTX); lower screening rigor | Suitable for less demanding military programs where full JANTX environmental testing not mandated | Select when cost sensitivity outweighs requirement for extended burn-in and life-test validation |
Compared with JANTX1N4124D-1/TR, the 1N4124US-1 enables PCB area reduction but sacrifices manual repairability and axial through-hole robustness, while the JAN1N4124D-1 offers identical form-factor at lower cost but with reduced reliability assurance for mission-critical deployments.
Availability
JANTX1N4124D-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC converter reference, and tactical radio RF power amplifier bias requiring stable component supply with guaranteed long-term obsolescence management.
Supply support for JANTX1N4124D-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 JANTX1N4124D-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode product line, engineered specifically for voltage reference stability in defense electronics, space systems, and nuclear instrumentation where parametric drift and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage and tolerance of JANTX1N4124D-1/TR?
JANTX1N4124D-1/TR has a nominal Zener voltage of 43.0 V at 250 mA test current (IZT), with a tight ±1% tolerance as indicated by the "D" suffix in its nomenclature. This tolerance is verified per MIL-PRF-19500/435 screening and applies across the full operating temperature range of -65 °C to +175 °C junction temperature.
Is JANTX1N4124D-1/TR RoHS compliant?
No, JANTX1N4124D-1/TR is not RoHS compliant. The "e3" RoHS designation appears only on commercial-grade versions of this series (e.g., 1N4124D-1e3). JANTX-level parts retain traditional tin-lead plating to meet MIL-STD-750 solderability requirements and avoid reliability risks associated with pure matte-tin finishes in high-reliability applications.
What does the "TR" suffix mean in JANTX1N4124D-1/TR?
The "TR" suffix in JANTX1N4124D-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This version contains the same JANTX-qualified die and DO-35 package as the bulk version, with no electrical or reliability differences-only packaging format changes to support high-volume manufacturing workflows.
How is the polarity marked on JANTX1N4124D-1/TR?
JANTX1N4124D-1/TR uses a cathode band marking on the glass body to indicate polarity: the banded end is the cathode and must be connected to the higher-potential node (e.g., input supply rail) for proper Zener regulation. The opposite (unbanded) end is the anode and connects to ground or return. Operating with reversed polarity subjects it to forward conduction only.
What is the maximum Zener current (IZM) for JANTX1N4124D-1/TR?
The maximum Zener current (IZM) for JANTX1N4124D-1/TR is 32.7 mA, calculated from its 500 mW power rating and 43.0 V Zener voltage (IZM = PM(AV)/VZ). This value assumes operation at 25 °C ambient; derating begins linearly at 50 °C lead temperature, reaching zero dissipation at 175 °C per MIL-PRF-19500/435 thermal specifications.
JANTX1N4124D-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):
- 43 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 250 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 32.7 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)
JANTX1N4124D-1/TR FAQ
1.How can I place an order for JANTX1N4124D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4124D-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 JANTX1N4124D-1/TR reliable?
The price and inventory of JANTX1N4124D-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 JANTX1N4124D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4124D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4124D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4124D-1/TR?
JANTX1N4124D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4124D-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 JANTX1N4124D-1/TR?
For technical support, including JANTX1N4124D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4124D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4124D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4124D-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 JANTX1N4124D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4124D-1/TR?
All JANTX1N4124D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4124D-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 JANTX1N4124D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4124D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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