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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology JANTX1N4623C-1/TR

Name: JANTX1N4623C-1/TR
Brand: Microchip Technology
SKU: JANTX1N4623C-1/TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JANTX1N4623C-1/TR

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: JANTX1N4623C-1/TR.pdf

Description:: DIODE ZENER 4.3V 500MW DO204AH

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Product details

Overview

JANTX1N4623C-1/TR from Microsemi is a 500 mW, 4.3 V ±2% 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 JANTX1N4623C-1/TR datasheet, JANTX1N4623C-1/TR pinout, JANTX1N4623C-1/TR application, or JANTX1N4623C-1/TR equivalent, this page delivers verified Zener voltage, dynamic impedance, noise density, temperature coefficient, and military qualification status - all critical for precision reference and ruggedized analog design.

Technical Context

This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 4.3 V at 250 mA test current, exhibiting 1600 Ω dynamic impedance (ZZT) and a temperature coefficient of –0.050 %/°C. Its internal metallurgical bond ensures stable breakdown characteristics under thermal cycling and radiation exposure.

Designed for operation across –65 °C to +175 °C junction temperature range, it delivers low noise density (1 µV/√Hz typical at 4.3 V), minimal capacitance (<2 pF), and ESD immunity per MIL-STD-750 Method 1020 - enabling use in low-noise analog references and harsh-environment voltage clamping.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	4.3 V ±2% at I_ZT = 250 mA - defines precise regulation point for feedback loops and reference circuits.
Power Dissipation	500 mW at T_C = 25 °C - supports stable operation in compact, unheatsinked designs with linear derating to zero at 175 °C.
Dynamic Impedance ZZT	1600 Ω at I_ZT = 250 mA - determines output voltage variation under load current changes in regulation applications.
Noise Density ND	1 µV/√Hz at 4.3 V - enables low-noise performance in precision analog references and sensor excitation circuits.
Temp. Coefficient αV_Z	–0.050 %/°C - ensures predictable, negative drift over temperature for compensated reference designs.
Reverse Leakage IR	2.0 µA at V_R = 3.5 V - guarantees minimal parasitic current in high-impedance bias networks.
Junction Temp. Range	–65 °C to +175 °C - validated for extended operation in avionics, downhole, and space-grade systems.

Pinout & Package

DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Reference ground node	Connected to circuit common; establishes polarity for Zener operation when cathode is biased positive.
Cathode	Zener regulation terminal / Output reference node	Banded end; connected to regulated voltage rail; must be held at higher potential than anode for breakdown conduction.

Key Features

Feature	Design Value
MIL-PRF-19500/435 JANTX qualification	Validated reliability for aerospace and defense programs requiring traceable lot data and screening per military standards.
Metallurgical bond construction	Eliminates interfacial delamination risk under thermal shock and mechanical stress, ensuring long-term parameter stability.
Low noise density (1 µV/√Hz)	Enables use in ultra-low-noise voltage references without external filtering, reducing BOM count in precision instrumentation.
Hermetic glass DO-35 package	Provides moisture and contaminant immunity for >20-year field life in sealed enclosures and high-humidity environments.
ESD immunity (MIL-STD-750 Method 1020)	Withstands handling and assembly without protection circuitry, simplifying board-level ESD design in ruggedized electronics.

Applications

Avionics Power Monitoring	Satellite DC-DC Reference
Use Scenario: Real-time monitoring of 28 V aircraft bus voltage using discrete comparator-based overvoltage detection. IC Role / Device Role / Timing Role: Zener reference providing stable 4.3 V threshold against which bus voltage is compared. Use Value: Tight ±2% tolerance and –0.050 %/°C TC ensure trip point accuracy remains within ±3% over –55 °C to +125 °C operating range.	Use Scenario: Precision feedback node in radiation-hardened isolated DC-DC converter for LEO satellite payload power rails. IC Role / Device Role / Timing Role: Primary voltage reference for optocoupler-coupled error amplifier loop. Use Value: Inherent radiation hardness and hermetic DO-35 packaging eliminate need for additional shielding or derating in total ionizing dose environments.
Downhole Sensor Excitation	Tactical Radio Bias Network
Use Scenario: Stable excitation source for piezoresistive pressure transducers in oil/gas well logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: Temperature-stable Zener reference generating fixed bias current for bridge sensors. Use Value: Validated operation up to +175 °C junction temperature and low 1 µV/√Hz noise enable sub-mV measurement resolution at extreme temperatures.	Use Scenario: Local voltage clamp and reference in RF front-end bias sequencing for manpack tactical radios exposed to wide thermal swings. IC Role / Device Role / Timing Role: Dual-function device serving as both overvoltage protector and stable 4.3 V reference for gain control DACs. Use Value: 1600 Ω dynamic impedance and 2.0 µA leakage at 3.5 V allow predictable clamping behavior while minimizing loading on sensitive analog control lines.

Avionics Power Monitoring

Satellite DC-DC Reference

Use Scenario: Real-time monitoring of 28 V aircraft bus voltage using discrete comparator-based overvoltage detection.

IC Role / Device Role / Timing Role: Zener reference providing stable 4.3 V threshold against which bus voltage is compared.

Use Value: Tight ±2% tolerance and –0.050 %/°C TC ensure trip point accuracy remains within ±3% over –55 °C to +125 °C operating range.

Use Scenario: Precision feedback node in radiation-hardened isolated DC-DC converter for LEO satellite payload power rails.

IC Role / Device Role / Timing Role: Primary voltage reference for optocoupler-coupled error amplifier loop.

Use Value: Inherent radiation hardness and hermetic DO-35 packaging eliminate need for additional shielding or derating in total ionizing dose environments.

Downhole Sensor Excitation

Tactical Radio Bias Network

Use Scenario: Stable excitation source for piezoresistive pressure transducers in oil/gas well logging tools operating at 175 °C ambient.

IC Role / Device Role / Timing Role: Temperature-stable Zener reference generating fixed bias current for bridge sensors.

Use Value: Validated operation up to +175 °C junction temperature and low 1 µV/√Hz noise enable sub-mV measurement resolution at extreme temperatures.

Use Scenario: Local voltage clamp and reference in RF front-end bias sequencing for manpack tactical radios exposed to wide thermal swings.

IC Role / Device Role / Timing Role: Dual-function device serving as both overvoltage protector and stable 4.3 V reference for gain control DACs.

Use Value: 1600 Ω dynamic impedance and 2.0 µA leakage at 3.5 V allow predictable clamping behavior while minimizing loading on sensitive analog control lines.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4623US-1/TR	Same electrical specs but in surface-mount DO-213AA package; no axial leads.	Required for automated SMT assembly; unsuitable for through-hole prototyping or manual repair.	Select when PCB layout mandates SMT footprint and thermal mass constraints favor lower R_θJL.
JANTXV1N4623C-1/TR	Identical electrical parameters with enhanced screening per JANTXV level (including burn-in and 100% parametric testing).	Required for mission-critical flight hardware where failure modes demand tighter process controls and lot traceability.	Select when program requirements mandate JANTXV qualification beyond standard JANTX screening.

Compared with JANTX1N4623C-1/TR, the DO-213AA alternative enables automated manufacturing but sacrifices axial-lead serviceability, while the JANTXV variant adds screening rigor without altering regulation performance - making each suitable for distinct program maturity and reliability tiers.

Availability

JANTX1N4623C-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC reference, and downhole sensor excitation requiring stable component supply with full MIL-spec traceability and lot-controlled delivery.

Supply support for JANTX1N4623C-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 analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.

The 1N46xx series was designed specifically for military-grade voltage regulation where long-term stability, hermetic sealing, and extended temperature operation are mandatory - not as general-purpose Zeners but as qualified reference elements in safety-critical systems.

FAQ

What is the Zener voltage tolerance of JANTX1N4623C-1/TR?

JANTX1N4623C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per Microsemi's nomenclature. This means its measured V_Z at I_ZT = 250 mA falls between 4.214 V and 4.386 V at 25 °C, supporting tighter regulation than standard ±5% variants in precision analog circuits.

Is JANTX1N4623C-1/TR RoHS compliant?

No, JANTX1N4623C-1/TR is not RoHS compliant. The "e3" RoHS designation applies only to commercial-grade versions (e.g., 1N4623C-1e3); military-qualified parts like JANTX1N4623C-1/TR retain tin-lead plating per MIL-STD-750 to ensure solderability and reliability under thermal cycling - a requirement for high-reliability programs.

What is the maximum Zener current I_ZM for JANTX1N4623C-1/TR?

The maximum Zener current I_ZM for JANTX1N4623C-1/TR is 77.0 mA, derived from its 500 mW power rating and 4.3 V nominal Zener voltage (I_ZM = P_M(AV)/V_Z). This value assumes operation at T_C = 25 °C and linearly decreases with rising case temperature per the derating curve in Figure 2 of the datasheet.

Does JANTX1N4623C-1/TR have radiation hardness certification?

Yes, JANTX1N4623C-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050. Its metallurgically bonded structure and hermetic DO-35 package provide proven resistance to total ionizing dose (TID) effects, making it suitable for use in low-earth orbit (LEO) and terrestrial radiation environments without additional shielding.

What does the "TR" suffix indicate in JANTX1N4623C-1/TR?

"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JANTX1N4623C-1/TR is supplied in reels with standardized orientation and spacing, supporting high-volume production of military and aerospace PCBs where consistent feeding and traceability are required.

JANTX1N4623C-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):: 4.3 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 1600 Ohms

Current - Reverse Leakage @ Vr:: 2 µA @ 2 V

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: -65°C ~ 175°C

Grade:: Military

Qualification:: MIL-PRF-19500/435

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AH (DO-35)

JANTX1N4623C-1/TR FAQ

1.How can I place an order for JANTX1N4623C-1/TR through Aetrix?

Please submit a Request for Quotation (RFQ) for JANTX1N4623C-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 JANTX1N4623C-1/TR reliable?

The price and inventory of JANTX1N4623C-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 JANTX1N4623C-1/TR is usually 5 days.

3.What payment methods are accepted for JANTX1N4623C-1/TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4623C-1/TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JANTX1N4623C-1/TR?

JANTX1N4623C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JANTX1N4623C-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 JANTX1N4623C-1/TR?

For technical support, including JANTX1N4623C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4623C-1/TR requirements.

6.How does Aetrix verify that JANTX1N4623C-1/TR is sourced from the original manufacturer or authorized distributors?

All JANTX1N4623C-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 JANTX1N4623C-1/TR meets industry standards.

7.What is the process for return or replacement of JANTX1N4623C-1/TR?

All JANTX1N4623C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4623C-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 JANTX1N4623C-1/TR part is unused and in its original packaging.

Return procedure for JANTX1N4623C-1/TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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