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Microchip Technology JAN1N4623-1
- Part No.:
- JAN1N4623-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4623-1.pdf
- Description:
- DIODE ZENER 4.3V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,545
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Product details
Overview
JAN1N4623-1 from Microsemi is a 500 mW, 4.3 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) package, qualified to JAN level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4623-1 datasheet, JAN1N4623-1 pinout, JAN1N4623-1 application, or JAN1N4623-1 equivalent, key selection criteria include its 4.3 V nominal Zener voltage at 250 mA test current, 1600 Ω dynamic impedance, -0.050 %/°C temperature coefficient, and hermetically sealed axial-leaded construction for stable regulation across -65 °C to +175 °C.
Technical Context
This device operates as a precision shunt voltage regulator with a sharp breakdown knee at IZK = 250 mA, delivering stable 4.3 V output under varying load and temperature conditions. Its internal metallurgical bond ensures low noise density (1 µV/√Hz) and radiation hardness per MicroNote 050.
The JAN1N4623-1 exhibits a negative temperature coefficient (-0.050 %/°C), enabling predictable drift compensation in reference circuits. It supports reverse leakage current ≤2.0 µA at VR = 3.5 V and maintains Zener impedance ≤1600 Ω at IZT = 250 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 4.3 V ±5% at IZT = 250 mA - defines regulated output voltage with tight tolerance for reference stability |
| Power Dissipation | 500 mW at TC = 25 °C - supports continuous regulation in compact axial-leaded layouts without forced cooling |
| Dynamic Impedance ZZT | 1600 Ω max at IZT = 250 mA - limits output voltage variation under load transients |
| Temp Coefficient αVZ | -0.050 %/°C - enables predictable thermal drift modeling in precision analog references |
| Noise Density ND | 1 µV/√Hz - ensures low-noise performance in sensitive analog front-ends and sensor excitation |
| Reverse Leakage IR | ≤2.0 µA at VR = 3.5 V - minimizes standby current in battery-backed or low-power systems |
| Junction Temp Range | -65 °C to +175 °C - qualifies for extended-temperature operation in avionics and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; banded end is positive during Zener regulation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for regulation |
| Cathode | Zener output node | Banded end; supplies regulated 4.3 V to load when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock in flight-critical systems |
| MIL-PRF-19500/435 JAN qualification | Validated screening and testing for aerospace-grade reliability including burn-in, temperature cycling, and hermeticity |
| Low noise density (1 µV/√Hz) | Reduces signal corruption in precision instrumentation amplifiers and ADC reference buffers |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift over decades in sealed military enclosures |
| Radiation hardness | Inherent TID tolerance per Microsemi MicroNote 050 - suitable for low-earth orbit satellite power conditioning |
Applications
| Aerospace Power Reference | Defense System Voltage Clamp |
|---|---|
Use Scenario: Regulating reference voltage for ADCs and DACs in satellite telemetry units operating at -55 °C to +125 °C. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 4.3 V bias for precision analog signal chains. Use Value: Maintains ±0.2% voltage accuracy over full temperature range due to -0.050 %/°C coefficient and hermetic DO-35 package. |
Use Scenario: Clamping transient overvoltage on 5 V logic rails in radar pulse modulators exposed to ESD and EMP. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing surge energy before downstream CMOS inputs. Use Value: Withstands 500 mW peak dissipation and exhibits <2.0 µA leakage at 3.5 V, minimizing standby loading. |
| Avionics Sensor Excitation | Nuclear Instrumentation Bias Supply |
Use Scenario: Supplying excitation current to strain gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise Zener source delivering clean 4.3 V for ratiometric measurement stability. Use Value: 1 µV/√Hz noise density prevents microvolt-level offset errors in bridge output amplification. |
Use Scenario: Generating stable bias for photomultiplier tube (PMT) anode chains in radiation detection modules. IC Role / Device Role / Timing Role: High-reliability shunt regulator maintaining constant voltage despite gamma-induced leakage current shifts. Use Value: Radiation-hardened metallurgical bond ensures parametric stability after 100 krad(Si) total ionizing dose exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4623US | Same 4.3 V Zener voltage and DO-35 package, but commercial-grade (non-mil-qualified); no JAN screening or radiation data | Lacks MIL-PRF-19500/435 qualification; unsuitable for flight hardware or nuclear environments | Select only for cost-sensitive terrestrial industrial controls where reliability requirements are lower |
| JANTXV1N4623 | Identical electrical specs and DO-35 package, but qualified to JANTXV level with enhanced screening (e.g., 100% lot acceptance testing) | Supports higher assurance programs requiring extended life testing and tighter parametric limits | Choose when program specifications mandate JANTXV or higher reliability level beyond JAN |
Compared with JAN1N4623-1, 1N4623US offers identical regulation performance but lacks military screening and radiation assurance, while JANTXV1N4623 provides stricter process controls and broader environmental validation-making JAN1N4623-1 the optimal balance of proven reliability and procurement availability for mid-tier aerospace programs.
Availability
JAN1N4623-1 is available at Aetrix Electronics and suitable for aerospace power references, defense system voltage clamps, and avionics sensor excitation requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for JAN1N4623-1 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 JAN1N4623-1 belongs to Microsemi's legacy 1N46xx-1 series of metallurgically bonded Zener diodes, designed specifically for mission-critical voltage regulation where hermeticity, radiation tolerance, and MIL-spec qualification are mandatory.
FAQ
What is the Zener voltage tolerance for JAN1N4623-1?
JAN1N4623-1 has a nominal Zener voltage of 4.3 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies at IZT = 250 mA and TJ = 25 °C.
Is JAN1N4623-1 RoHS compliant?
No, JAN1N4623-1 is not RoHS compliant. Per the nomenclature guide on page 2, the "e3" suffix denotes RoHS compliance, which is available only on commercial-grade versions (e.g., 1N4623-1e3). The JAN prefix indicates military-grade qualification with tin-lead plating per MIL-STD-750.
What is the maximum reverse leakage current for JAN1N4623-1?
The maximum reverse leakage current (IR) for JAN1N4623-1 is 2.0 µA at VR = 3.5 V, as specified in the Electrical Characteristics table on page 3. This value is measured at 25 °C and reflects the device's low standby power consumption in clamp or reference configurations.
Does JAN1N4623-1 have radiation hardness documentation?
Yes, JAN1N4623-1 inherits inherent radiation hardness from its metallurgically bonded construction and is documented in Microsemi MicroNote 050. The device is suitable for low-earth orbit applications with demonstrated tolerance to total ionizing dose (TID) up to 100 krad(Si).
What is the thermal resistance junction-to-lead for JAN1N4623-1?
The thermal resistance junction-to-lead (RθJL) for JAN1N4623-1 is 250 °C/W when measured at 3/8 inch (10 mm) lead length from body, as stated in the Maximum Ratings table on page 1. This value supports thermal design for PCB mounting with standard axial-lead standoff practices.
JAN1N4623-1 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:
- 2 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)
JAN1N4623-1 FAQ
1.How can I place an order for JAN1N4623-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4623-1 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 JAN1N4623-1 reliable?
The price and inventory of JAN1N4623-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4623-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4623-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4623-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4623-1?
JAN1N4623-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4623-1 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 JAN1N4623-1?
For technical support, including JAN1N4623-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4623-1 requirements.
6.How does Aetrix verify that JAN1N4623-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4623-1 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 JAN1N4623-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4623-1?
All JAN1N4623-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4623-1, 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 JAN1N4623-1 part is unused and in its original packaging.
Return procedure for JAN1N4623-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4623-1 Tags
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