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Microchip Technology JANTX1N4623-1
- Part No.:
- JANTX1N4623-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4623-1.pdf
- Description:
- DIODE ZENER 4.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:41
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Product details
Overview
JANTX1N4623-1 from Microsemi is a 500 mW, 4.3 V Zener voltage regulator diode in DO-35 glass package, qualified to MIL-PRF-19500/435 JANTX level, with 1% voltage tolerance, 1600 Ω dynamic impedance at 250 mA test current, and -0.050 %/°C temperature coefficient - used for precision voltage reference and regulation in military-grade power supply circuits.
For engineers reviewing the JANTX1N4623-1 datasheet, JANTX1N4623-1 pinout, JANTX1N4623-1 application, or JANTX1N4623-1 equivalent, key selection criteria include Zener voltage stability over temperature, low noise density (1 µV/√Hz), hermetic glass packaging, metallurgical bond reliability, and compliance with MIL-PRF-19500/435 JANTX screening requirements.
Technical Context
This device operates as a reverse-biased Zener regulator with a nominal breakdown voltage of 4.3 V at 250 mA test current, exhibiting a negative temperature coefficient of -0.050 %/°C. Its metallurgically bonded construction ensures stable junction behavior under thermal cycling and radiation exposure.
The DO-35 axial-leaded glass package provides hermetic sealing and supports operation from -65 °C to +175 °C. Thermal resistance junction-to-lead is 250 °C/W at 10 mm lead length, enabling reliable power dissipation up to 500 mW at 25 °C ambient before linear derating begins at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.3 V ±1% at IZT = 250 mA - defines precise regulation point for low-voltage reference circuits |
| Power Dissipation | 500 mW at TL = 25 °C - supports stable operation in compact, unheatsinked designs |
| Dynamic Impedance ZZT | 1600 Ω at IZT = 250 mA - indicates moderate regulation stiffness under varying load current |
| Temperature Coefficient αVZ | -0.050 %/°C - enables predictable voltage drift compensation in wide-temperature environments |
| Noise Density ND | 1 µV/√Hz - ensures minimal broadband noise contribution in sensitive analog references |
| Reverse Leakage IR | 2.0 µA at VR = 3.6 V - confirms tight leakage control near knee voltage for low-power biasing |
| Max Zener Current IZM | 77 mA - sets absolute upper current limit before exceeding rated power at elevated temperatures |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package: hermetically sealed, cathode indicated by band; operated with banded end positive for Zener regulation. Tin-lead plating, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node during Zener operation |
| Cathode | Banded end | Connected to regulated output node; carries full Zener current and dissipates heat |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening for high-reliability aerospace and defense applications including burn-in, temperature cycling, and life testing |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal stress, ensuring long-term parameter stability |
| 1% Zener voltage tolerance | Reduces need for post-production trimming in precision reference designs |
| Hermetic glass DO-35 package | Prevents moisture ingress and corrosion, supporting 175 °C storage and operation without encapsulation |
| Low noise density (1 µV/√Hz) | Enables use in low-noise analog front-ends where reference ripple must be minimized |
Applications
| Avionics Power Reference | Military Sensor Biasing |
|---|---|
Use Scenario: Providing stable 4.3 V reference for ADCs and DACs in airborne navigation computers operating across -55 °C to +125 °C. IC Role / Device Role / Timing Role: Precision Zener voltage reference source for analog signal conditioning circuitry. Use Value: Maintains <±1% output accuracy over full military temperature range due to -0.050 %/°C TC and JANTX-level screening. | Use Scenario: Biasing photodiode amplifiers and MEMS gyroscope interfaces in guided munition guidance sections. IC Role / Device Role / Timing Role: Low-noise, radiation-tolerant voltage clamp and reference generator. Use Value: Delivers 1 µV/√Hz noise floor and inherent radiation hardness per MicroNote 050, critical for signal integrity in high-dose environments. |
| Secure Communications RF Modulator | Tactical Radio Power Sequencing |
Use Scenario: Regulating local oscillator bias voltages in SDR transceivers deployed in electronic warfare platforms. IC Role / Device Role / Timing Role: Stable DC voltage source for VCO tuning and mixer bias networks. Use Value: Ensures phase noise performance remains within spec via low-impedance, low-noise regulation at 4.3 V. | Use Scenario: Enabling controlled power-up sequencing of FPGA and RF front-end ICs in manpack radios subjected to shock/vibration. IC Role / Device Role / Timing Role: Zener-clamped reset supervisor input and rail monitor element. Use Value: Survives mechanical stress and thermal shock due to metallurgical bond and DO-35 hermeticity, preventing false resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4623US | Same 4.3 V, 1% tolerance, but in surface-mount DO-213AA package; no MIL qualification | Lacks JANTX screening and hermetic glass seal; suitable only for commercial industrial use | Select when board space is constrained and military reliability is not required |
| JAN1N4623-1 | Identical electrical specs and DO-35 package, but qualified only to JAN level (less stringent screening than JANTX) | Lower cost, reduced test coverage; acceptable for non-critical subsystems with relaxed reliability requirements | Select when full JANTX screening is unnecessary and procurement cost is prioritized |
Compared with JANTX1N4623-1, 1N4623US offers footprint reduction but sacrifices hermeticity and radiation tolerance, while JAN1N4623-1 retains the same package and regulation performance but omits JANTX-level environmental and life testing - making JANTX1N4623-1 the sole choice for systems requiring verified high-reliability operation in harsh conditions.
Availability
JANTX1N4623-1 is available at Aetrix Electronics and suitable for avionics power reference, military sensor biasing, secure communications RF modulator, tactical radio power sequencing, and high-reliability industrial control systems requiring stable component supply across extended temperature ranges and long lifecycle commitments.
Supply support for JANTX1N4623-1 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, radiation-hardened, and aerospace-grade components.
The JANTX1N4623-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical defense, space, and avionics systems where parameter stability and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage and tolerance of JANTX1N4623-1?
JANTX1N4623-1 has a nominal Zener voltage of 4.3 V with a ±1% tolerance, measured at 250 mA test current and 25 °C. This tight tolerance eliminates the need for external calibration in precision reference designs and is maintained through JANTX-level screening per MIL-PRF-19500/435.
Is JANTX1N4623-1 suitable for high-temperature operation?
Yes, JANTX1N4623-1 is rated for junction and storage temperatures from -65 °C to +175 °C. Its metallurgically bonded DO-35 glass package ensures structural integrity and parameter stability across this full military temperature range, making it appropriate for engine bay or avionics bay deployments.
What is the maximum Zener current rating for JANTX1N4623-1?
The maximum Zener current IZM for JANTX1N4623-1 is 77 mA at 25 °C ambient. This value decreases linearly with rising temperature, reaching zero at 175 °C, as defined by its 500 mW power rating and thermal derating curve per Figure 2 in the datasheet.
Does JANTX1N4623-1 have low noise characteristics?
Yes, JANTX1N4623-1 exhibits a noise density of 1 µV/√Hz at 250 mA test current, among the lowest in its voltage class. This performance is confirmed in Figure 1 and supports use in low-noise analog references where spectral purity directly impacts system SNR.
How is polarity marked on JANTX1N4623-1?
JANTX1N4623-1 uses a cathode band to indicate polarity: the banded end is the cathode and must be held at higher potential than the anode (non-banded end) during Zener regulation. This marking complies with JEDEC standards and is visible on the DO-35 glass body.
JANTX1N4623-1 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):
- 4.3 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1600 Ohms
- Current - Reverse Leakage @ Vr:
- 4 µA @ 2 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)
JANTX1N4623-1 FAQ
1.How can I place an order for JANTX1N4623-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4623-1 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 JANTX1N4623-1 reliable?
The price and inventory of JANTX1N4623-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4623-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4623-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4623-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4623-1?
JANTX1N4623-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4623-1 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 JANTX1N4623-1?
For technical support, including JANTX1N4623-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4623-1 requirements.
6.How does Aetrix verify that JANTX1N4623-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4623-1 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 JANTX1N4623-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4623-1?
All JANTX1N4623-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4623-1, 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 JANTX1N4623-1 part is unused and in its original packaging.
Return procedure for JANTX1N4623-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4623-1 Tags
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