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Microchip Technology JAN1N4112D-1
- Part No.:
- JAN1N4112D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4112D-1.pdf
- Description:
- DIODE ZENER 18V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,730
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Product details
Overview
JAN1N4112D-1 from Microsemi is a 500 mW, 18.0 V ±1% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded 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 JAN1N4112D-1 datasheet, JAN1N4112D-1 pinout, JAN1N4112D-1 application, or JAN1N4112D-1 equivalent, key selection criteria include its 18.0 V nominal Zener voltage at 250 mA test current, 100 Ω dynamic impedance, 0.05 µA max reverse leakage at 14.4 V, +0.090 %/°C temperature coefficient, and hermetically sealed glass construction for stable operation 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, leveraging internal metallurgical bonding to minimize parameter drift under thermal and radiation stress. Its low noise density (1 µV/√Hz typical at 18 V) and minimal capacitance support low-noise analog reference and feedback loop applications.
The diode exhibits a positive temperature coefficient (+0.090 %/°C), enabling predictable voltage shift over temperature - critical for calibration-critical systems. It is rated for 500 mW average power dissipation with linear derating from 25 °C ambient to zero at 175 °C on standard FR4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 18.0 V at 250 mA - defines regulated output voltage under standard test conditions |
| Zener Tolerance | ±1% - ensures tight voltage accuracy for precision reference designs |
| Dynamic Impedance | 100 Ω at 250 mA - determines load regulation error under varying current demand |
| Max Reverse Leakage | 0.05 µA at 14.4 V - guarantees low standby power loss in high-impedance bias networks |
| Temp Coefficient | +0.090 %/°C - enables predictable voltage drift compensation in wide-temperature environments |
| Power Dissipation | 500 mW @ 25 °C ambient - sets maximum continuous power handling before thermal derating begins |
| Junction Temp Range | -65 °C to +175 °C - supports operation in extreme aerospace, military, and downhole electronics |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground/reference node | Connected to circuit common; reverse-biased operation requires this terminal at lower potential than cathode |
| Cathode | Zener regulation output | Banded end; held at precise 18.0 V relative to anode when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Validated reliability for mission-critical systems requiring traceable screening and lot control |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| 1 µV/√Hz noise density | Enables use in low-noise voltage references for ADCs, DACs, and precision op-amp circuits |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades of storage or operation |
| Radiation hardness | Inherently resistant to total ionizing dose (TID), supporting space-grade analog subsystems |
Applications
| Avionics Power Reference | Satellite DC-DC Feedback |
|---|---|
Use Scenario: Providing stable 18.0 V reference for voltage-controlled oscillators and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision bias point for analog signal chains. Use Value: ±1% tolerance and +0.090 %/°C TC ensure <±0.5% total error over -55 °C to +125 °C operating range. | Use Scenario: Regulating feedback node in isolated 28 V to 5 V DC-DC converters aboard LEO satellites. IC Role / Device Role / Timing Role: Zener clamp defining secondary-side regulation threshold in optocoupler-isolated feedback loops. Use Value: Hermetic DO-35 package and radiation hardness prevent parametric drift under 100 krad(Si) TID exposure. |
| Missile Guidance Biasing | Nuclear Instrumentation Calibration |
Use Scenario: Supplying calibrated bias voltage to MEMS gyroscope front-end amplifiers in tactical missile inertial measurement units. IC Role / Device Role / Timing Role: Precision shunt regulator maintaining fixed headroom for low-noise amplifier rails. Use Value: 1 µV/√Hz noise density avoids injection of broadband noise into sensitive analog acquisition paths. | Use Scenario: Serving as primary voltage standard in portable radiation survey meters requiring NIST-traceable calibration stability. IC Role / Device Role / Timing Role: Primary reference element in multi-decade resistor-divider networks for high-voltage scaling. Use Value: Metallurgical bond and MIL-qualified screening ensure <10 ppm/year long-term drift under field storage conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4112D-1 | Higher screening level (JANTXV vs. JAN); tighter parametric limits and extended burn-in | Required for programs mandating JANTXV-level reliability documentation and lot traceability | Select when full JANTXV qualification per MIL-PRF-19500/435 is contractually required |
| 1N4112DUR-1 | DO-213AA surface-mount package; identical electrical specs but no axial leads | Used where board space constraints prohibit through-hole mounting or automated SMT assembly is preferred | Select when transitioning from through-hole to surface-mount assembly without changing circuit performance |
Compared with JAN1N4112D-1, JANTXV1N4112D-1 offers enhanced screening for higher assurance, while 1N4112DUR-1 provides identical regulation performance in a compact SMT form factor - enabling layout flexibility without compromising voltage accuracy or thermal stability.
Availability
JAN1N4112D-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC feedback, and missile guidance biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for JAN1N4112D-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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The JAN1N4112D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where long-term stability, radiation tolerance, and hermetic reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JAN1N4112D-1?
JAN1N4112D-1 has a nominal Zener voltage of 18.0 V with ±1% tolerance, as indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and applies across the full qualified temperature range when used within specified power derating limits.
Is JAN1N4112D-1 suitable for space applications?
Yes, JAN1N4112D-1 is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to JAN level per MIL-PRF-19500/435. Its hermetic DO-35 package and metallurgical bond construction support use in LEO satellite power regulation, though system-level radiation testing is recommended for specific mission profiles.
What is the maximum reverse leakage current for JAN1N4112D-1?
The maximum reverse leakage current for JAN1N4112D-1 is 0.05 µA at VR = 14.4 V (80% of nominal Zener voltage), measured at 25 °C. This ultra-low leakage supports high-impedance bias networks and minimizes standby power loss in battery-operated systems.
Does JAN1N4112D-1 have a defined noise specification?
Yes, JAN1N4112D-1 has a typical noise density of 1 µV/√Hz at 18 V, measured using a 1 kHz–3 kHz bandpass filter at 250 mA Zener test current. This low noise performance makes it suitable for precision analog references where spectral purity is critical.
What packaging options are available for JAN1N4112D-1?
JAN1N4112D-1 is supplied in the axial-leaded DO-35 (DO-204AH) glass package. Surface-mount alternatives include 1N4112DUR-1 in DO-213AA and 1PMT4112 in DO-216, both sharing identical electrical specifications but differing in mechanical form factor and assembly method.
JAN1N4112D-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):
- 18 V
- Tolerance:
- ±1%
- Power - Max:
- -
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 13.7 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)
JAN1N4112D-1 FAQ
1.How can I place an order for JAN1N4112D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4112D-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 JAN1N4112D-1 reliable?
The price and inventory of JAN1N4112D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4112D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4112D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4112D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4112D-1?
JAN1N4112D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4112D-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 JAN1N4112D-1?
For technical support, including JAN1N4112D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4112D-1 requirements.
6.How does Aetrix verify that JAN1N4112D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4112D-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 JAN1N4112D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4112D-1?
All JAN1N4112D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4112D-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 JAN1N4112D-1 part is unused and in its original packaging.
Return procedure for JAN1N4112D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4112D-1 Tags
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