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Microchip Technology JAN1N4123-1
- Part No.:
- JAN1N4123-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4123-1.pdf
- Description:
- DIODE ZENER 39V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,665
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Product details
Overview
JAN1N4123-1 from Microsemi is a 500 mW, 39.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JAN level for high-reliability applications. It delivers stable voltage regulation at 250 mA test current with 200 Ω dynamic impedance, 0.01 µA reverse leakage at 31.2 V, and +0.095 %/°C temperature coefficient.
For engineers reviewing the JAN1N4123-1 datasheet, JAN1N4123-1 pinout, JAN1N4123-1 application, or JAN1N4123-1 equivalent, key selection criteria include its MIL-qualified reliability grade, low-noise performance (≤1 µV/√Hz below 6.8 V), hermetic glass package, and thermal derating behavior from 500 mW at 25 °C to zero at 175 °C.
Technical Context
The JAN1N4123-1 operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures mechanical robustness and long-term stability under thermal cycling and radiation exposure.
It exhibits a positive temperature coefficient of +0.095 %/°C above 30 V, enabling predictable drift compensation in reference circuits. Noise density is minimized (<1 µV/√Hz) due to low-voltage Zener mechanism dominance, and capacitance remains low (typical <2 pF) per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 39.0 V @ 250 mA - precise regulation point for mid-range reference designs |
| Power Dissipation | 500 mW @ TL = 25 °C - supports stable operation with linear derating to zero at 175 °C |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - limits output voltage variation under load current changes |
| Reverse Leakage IR | 0.01 µA @ 31.2 V - ensures minimal error current in high-impedance bias networks |
| Temp. Coefficient αVZ | +0.095 %/°C - enables predictable drift modeling in temperature-critical references |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise analog references and precision instrumentation |
| Junction Temp. Range | –65 to +175 °C - validated for aerospace, defense, and downhole industrial environments |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by single black band; leads tin-lead plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lower-potential rail; carries full Zener current during regulation |
| Cathode | Regulated output node | Banded end; supplies stable 39.0 V to load; must be biased positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical systems including space, avionics, and nuclear instrumentation |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter drift over decades in harsh environments |
| Low noise density ≤1 µV/√Hz | Enables use in ultra-low-noise voltage references without external filtering |
| Non-ESD-sensitive per MIL-STD-750 | Eliminates need for ESD handling protocols during assembly and field maintenance |
Applications
| Avionics Power Reference | Nuclear Instrumentation Biasing |
|---|---|
Use Scenario: Provides stable 39.0 V reference for analog-to-digital converter (ADC) front-end circuitry in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision DC reference for signal conditioning stages. Use Value: JAN-level qualification and –65 to +175 °C operation ensure uninterrupted accuracy across extreme aircraft thermal profiles. | Use Scenario: Supplies bias voltage to radiation-hardened photomultiplier tube (PMT) arrays in reactor monitoring systems. IC Role / Device Role / Timing Role: High-stability Zener source maintaining constant gain calibration despite neutron flux-induced parameter shifts. Use Value: Inherent radiation hardness and hermetic sealing prevent degradation in high-dose gamma and neutron environments. |
| Satellite Payload Voltage Reference | Downhole Oilfield Sensor Excitation |
Use Scenario: Generates primary reference for telemetry subsystems in LEO satellite payloads where size and reliability are constrained. IC Role / Device Role / Timing Role: Precision shunt regulator feeding voltage-controlled oscillator (VCO) tuning networks and sensor excitation circuits. Use Value: Low 1 µV/√Hz noise and +0.095 %/°C TC enable sub-ppm stability over orbital thermal cycles without active compensation. | Use Scenario: Powers piezoresistive pressure transducers in deep-well drilling tools exposed to >150 °C ambient and high-pressure hydrocarbons. IC Role / Device Role / Timing Role: Regulated excitation source maintaining transducer bridge balance under extreme thermal stress. Use Value: 175 °C max junction temperature and metallurgical bond integrity ensure functional continuity at bottom-hole conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4123-1 | Higher screening level (JANTXV vs. JAN); tighter parametric testing, enhanced burn-in, and extended life testing | Required for Class H or Class K military programs demanding higher confidence in early-life failure rate | Select when program specification mandates JANTXV qualification or when operating margin is insufficient for JAN-grade screening |
| 1N4123US | Same electrical specs but in surface-mount DO-213AA package; no axial leads; RoHS-compliant matte-tin plating | Used where PCB real estate is constrained and automated SMT assembly is required | Select for space-constrained commercial or industrial designs requiring automated placement and reflow compatibility |
Compared with JAN1N4123-1, JANTXV1N4123-1 offers superior screening rigor for mission-critical deployments, while 1N4123US provides identical regulation performance in a compact SMT form factor-neither is pin-compatible due to differing packages, and both require layout revision for substitution.
Availability
JAN1N4123-1 is available at Aetrix Electronics and suitable for avionics power reference, nuclear instrumentation biasing, and satellite payload voltage reference requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JAN1N4123-1 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 JAN1N4123-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed for precision voltage regulation in defense, space, and nuclear applications where long-term stability and environmental survivability are non-negotiable.
FAQ
What is the Zener voltage tolerance for JAN1N4123-1?
JAN1N4123-1 has a nominal Zener voltage of 39.0 V with a standard tolerance of ±5%, as defined by JEDEC registration and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current.
Is JAN1N4123-1 RoHS compliant?
No, JAN1N4123-1 is not RoHS compliant. Per the nomenclature guide on page 2, the "e3" suffix denotes RoHS compliance, which is only available on commercial-grade versions-not JAN-level devices. JAN1N4123-1 uses traditional tin-lead plating per MIL-STD-750.
What is the maximum reverse leakage current for JAN1N4123-1?
The maximum reverse leakage current for JAN1N4123-1 is 0.01 µA at 31.2 V (80% of VZ), as specified in the Electrical Characteristics table on page 3. This value is measured at 25 °C and reflects the device's tight leakage control for high-impedance reference applications.
Can JAN1N4123-1 be used in surface-mount designs?
No, JAN1N4123-1 is packaged in the axial-leaded DO-35 (DO-204AH) through-hole format. For surface-mount use, Microsemi offers the functionally equivalent 1N4123US in DO-213AA package-but JAN1N4123-1 itself requires through-hole mounting and cannot be substituted without PCB redesign.
What is the thermal resistance junction-to-lead for JAN1N4123-1?
The thermal resistance junction-to-lead (RθJL) for JAN1N4123-1 is 250 °C/W when measured with 3/8 inch (10 mm) lead length from the body, as stated in the Maximum Ratings table on page 1. This value assumes standard lead configuration and is critical for calculating junction temperature rise under load.
JAN1N4123-1 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:
- ±5%
- Power - Max:
- -
- 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)
JAN1N4123-1 FAQ
1.How can I place an order for JAN1N4123-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4123-1 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 JAN1N4123-1 reliable?
The price and inventory of JAN1N4123-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4123-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4123-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4123-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4123-1?
JAN1N4123-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4123-1 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 JAN1N4123-1?
For technical support, including JAN1N4123-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4123-1 requirements.
6.How does Aetrix verify that JAN1N4123-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4123-1 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 JAN1N4123-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4123-1?
All JAN1N4123-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4123-1, 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 JAN1N4123-1 part is unused and in its original packaging.
Return procedure for JAN1N4123-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4123-1 Tags
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