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Microchip Technology JANTX1N4123D-1
- Part No.:
- JANTX1N4123D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4123D-1.pdf
- Description:
- DIODE ZENER 39V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,592
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Product details
Overview
JANTX1N4123D-1 from Microsemi is a 500 mW, 39.0 V ±1% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4123D-1 datasheet, JANTX1N4123D-1 pinout, JANTX1N4123D-1 application, or JANTX1N4123D-1 equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status - critical for precision reference and overvoltage protection design.
Technical Context
JANTX1N4123D-1 operates as a reverse-biased voltage reference with nominal Zener voltage of 39.0 V at 250 mA test current, exhibiting +0.095 %/°C temperature coefficient and 200 Ω dynamic impedance (ZZT) at IZT. Its metallurgical bond construction ensures stable regulation across -65 °C to +175 °C junction temperature range.
The device delivers low noise density of 1 µV/√Hz at 39 V and maintains ≤0.01 µA reverse leakage (IR) at VR = 29.7 V. It is hermetically sealed in glass DO-35 package with cathode band polarity marking and tin-lead plating compliant with MIL-STD-750 method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39.0 V ±1% at 250 mA - enables precise 39 V reference generation with tight tolerance for calibration-critical systems. |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact through-hole designs without forced cooling. |
| Dynamic Impedance (ZZT) | 200 Ω at IZT = 250 mA - ensures minimal output voltage variation under load transients in feedback loops. |
| Temperature Coefficient (αVZ) | +0.095 %/°C - provides predictable, monotonic drift for thermal compensation in analog circuits. |
| Noise Density (ND) | 1 µV/√Hz at 39 V - suitable for low-noise reference applications such as precision ADCs and instrumentation amplifiers. |
| Reverse Leakage (IR) | ≤0.01 µA at VR = 29.7 V - guarantees negligible standby current in high-impedance bias networks. |
| Junction Temperature Range | -65 °C to +175 °C - validated for operation in extreme environments including avionics and downhole electronics. |
Pinout & Package
Hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with cathode indicated by color band; leads are tin-lead plated and solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; defines reference point for regulated voltage at cathode. |
| Cathode | Zener regulation output / reverse-bias anode | Banded end; supplies stable 39.0 V output when reverse biased above breakdown; must be held at higher potential than anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense programs requiring traceable lot control and screening per military standards. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term stability in mission-critical power references. |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead in precision voltage monitors and sensor excitation circuits where ±0.39 V accuracy is required. |
| Low 1 µV/√Hz noise density | Enables use in ultra-low-noise analog front-ends without requiring external filtering or post-regulation buffering. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity for >20-year field life in harsh environmental enclosures. |
Applications
| Aerospace Power Reference | Defense System Voltage Clamp |
|---|---|
Use Scenario: Providing stable 39 V reference for analog-to-digital converters in satellite telemetry modules operating across -55 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Precision Zener reference diode establishing absolute voltage scale for data acquisition subsystems. Use Value: ±1% tolerance and +0.095 %/°C TC ensure <±2.5% total error over full temperature range, eliminating need for software calibration. | Use Scenario: Clamping transient overvoltage on 28 V DC aircraft bus during load dump events in radar control units. IC Role / Device Role / Timing Role: High-reliability shunt regulator absorbing surge energy while maintaining downstream rail integrity. Use Value: 500 mW rating and -65 °C to +175 °C operation allow sustained clamping without thermal runaway in uncooled avionics bays. |
| Industrial Sensor Excitation | Nuclear Instrumentation Bias Supply |
Use Scenario: Supplying excitation voltage to strain gauge bridges in offshore oil rig pressure transmitters exposed to salt fog and wide thermal swings. IC Role / Device Role / Timing Role: Low-noise, stable voltage source for ratiometric measurement circuits requiring minimal drift. Use Value: 1 µV/√Hz noise density prevents signal degradation in 24-bit sigma-delta ADCs measuring microvolt-level bridge outputs. | Use Scenario: Generating bias voltage for radiation-hardened photomultiplier tube (PMT) arrays in nuclear reactor monitoring systems. IC Role / Device Role / Timing Role: Radiation-tolerant Zener reference providing stable gain-setting voltage in high-dose gamma environments. Use Value: Inherent radiation hardness per Microsemi MicroNote 050 eliminates derating or shielding overhead for 100 krad(Si) TID applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4123US-1 | Same 39 V Zener voltage and JANTX qualification, but in surface-mount DO-213AA package. | Requires PCB re-layout for SMT assembly; lacks axial-leaded mechanical mounting flexibility. | Select when automated assembly and board space reduction outweigh through-hole serviceability needs. |
| JAN1N4123D-1 | Identical electrical specs and DO-35 package, but qualified only to JAN (not JANTX) reliability level per MIL-PRF-19500/435. | Lower screening severity; not approved for flight-critical subsystems requiring JANTX-level burn-in and parametric testing. | Select for non-flight hardware or cost-sensitive prototypes where full JANTX screening is unnecessary. |
Compared with JANTX1N4123D-1, 1N4123US-1 offers identical regulation performance in a space-saving SMT form factor, while JAN1N4123D-1 reduces procurement cost and lead time at the expense of JANTX-level reliability assurance for mission-critical deployment.
Availability
JANTX1N4123D-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system voltage clamps, and industrial sensor excitation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4123D-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 manufacturer specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JANTX1N4123D-1 belongs to Microsemi's legacy 1N4099–1N4135 family of mil-qualified Zener diodes, engineered specifically for precision voltage regulation in safety-critical systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4123D-1?
JANTX1N4123D-1 has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its part number per Microsemi's nomenclature. This corresponds to a guaranteed 38.61 V to 39.39 V range at 250 mA test current and 25 °C, enabling high-accuracy reference design without post-manufacture trimming.
Is JANTX1N4123D-1 RoHS compliant?
No, JANTX1N4123D-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for JANTX-qualified parts. The JANTX1N4123D-1 uses tin-lead plating per MIL-STD-750 method 2026 to ensure solderability and reliability in military applications.
What is the maximum reverse leakage current for JANTX1N4123D-1?
The maximum reverse leakage current (IR) for JANTX1N4123D-1 is 0.01 µA at VR = 29.7 V, as specified in the Electrical Characteristics table. This ultra-low leakage supports high-impedance bias networks and minimizes power loss in battery-backed systems where standby current must be sub-nanoampere.
Can JANTX1N4123D-1 be used in surface-mount designs?
No, JANTX1N4123D-1 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) through-hole format. For surface-mount equivalents, Microsemi offers the 1N4123US-1 in DO-213AA package - same 39 V Zener voltage and JANTX qualification, but with SMT-compatible termination.
What is the thermal resistance junction-to-lead for JANTX1N4123D-1?
The thermal resistance junction-to-lead (RθJL) for JANTX1N4123D-1 is 250 °C/W when measured with 3/8 inch (10 mm) lead length from body, per the Maximum Ratings table. This value informs heatsinking requirements when operating near 500 mW dissipation in high-temperature environments.
JANTX1N4123D-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):
- 39 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 29.7 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)
JANTX1N4123D-1 FAQ
1.How can I place an order for JANTX1N4123D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4123D-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 JANTX1N4123D-1 reliable?
The price and inventory of JANTX1N4123D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4123D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4123D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4123D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4123D-1?
JANTX1N4123D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4123D-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 JANTX1N4123D-1?
For technical support, including JANTX1N4123D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4123D-1 requirements.
6.How does Aetrix verify that JANTX1N4123D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4123D-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 JANTX1N4123D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4123D-1?
All JANTX1N4123D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4123D-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 JANTX1N4123D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4123D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4123D-1 Tags
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