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Microchip Technology JAN1N4112-1
- Part No.:
- JAN1N4112-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4112-1.pdf
- Description:
- DIODE ZENER 18V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
JAN1N4112-1 from Microsemi is a 500 mW, 18.0 V Zener voltage regulator diode in DO-35 (DO-204AH) glass package, qualified to JAN level per MIL-PRF-19500/435, with 100 Ω dynamic impedance at 250 mA test current and ±5% voltage tolerance - used for precision voltage reference and regulation in military-grade power supply circuits.
For engineers reviewing the JAN1N4112-1 datasheet, JAN1N4112-1 pinout, JAN1N4112-1 application, or JAN1N4112-1 equivalent, key selection criteria include its 18.0 V nominal Zener voltage, 100 Ω Zener impedance at IZT = 250 mA, 0.05 µA maximum reverse leakage at VR = 14.4 V, -65 °C to +175 °C operating temperature range, and metallurgically bonded glass construction for high-reliability analog reference design.
Technical Context
The JAN1N4112-1 operates as a reverse-biased Zener regulator with a nominal breakdown voltage of 18.0 V at 250 mA test current, exhibiting a positive temperature coefficient of +0.090 %/°C and low noise density (≤1 µV/√Hz below 6.8 V, scaling with voltage). Its metallurgical bond ensures stable junction characteristics under thermal cycling.
Designed for high-reliability applications, it meets MIL-PRF-19500/435 requirements at JAN level, supports axial-leaded through-hole mounting, and delivers regulated voltage across wide current (1–40 mA typical operating range) and temperature (-65 °C to +175 °C) extremes without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 18.0 V at IZT = 250 mA - defines precise regulation point for reference circuits |
| Zener Impedance ZZT | 100 Ω - determines output voltage stability under load current variation |
| Max Reverse Leakage IR | 0.05 µA at VR = 14.4 V - ensures minimal standby power loss in bias networks |
| Power Dissipation PM(AV) | 500 mW - sets maximum continuous thermal limit at TL = 25 °C |
| Operating Temperature | -65 °C to +175 °C - enables deployment in aerospace, defense, and downhole electronics |
| Package | DO-35 (DO-204AH) glass axial-leaded - provides hermetic seal and MIL-qualified mechanical robustness |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies voltage drift over temperature for calibration margining |
Pinout & Package
DO-35 (DO-204AH) glass axial-leaded package with cathode indicated by band; banded end is positive during Zener operation. Hermetically sealed, tin-lead plated leads solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-bias reference return | Connected to circuit ground or lowest potential node in shunt regulator topology |
| Cathode | Zener voltage output terminal | Delivers regulated 18.0 V when reverse-biased above breakdown; marked with band |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JAN qualification | Guarantees screening, testing, and traceability for defense/aerospace programs |
| Metallurgical bond construction | Ensures long-term parameter stability and resistance to thermal fatigue |
| Low dynamic impedance (100 Ω) | Minimizes output voltage deviation across 1–40 mA load current range |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift in humid or corrosive environments |
| Minimal capacitance (~2 pF typical) | Preserves high-frequency response in RF bias and timing reference applications |
Applications
| Avionics Power Reference | Military Radio Bias Supply |
|---|---|
Use Scenario: Provides stable 18.0 V reference for analog-to-digital converter (ADC) drivers in flight control sensor modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for precision op-amps and ADC front-ends. Use Value: Maintains <±0.5% output accuracy over -55 °C to +125 °C ambient, meeting DO-160E environmental compliance. | Use Scenario: Supplies bias voltage to RF power amplifier stages in HF/VHF tactical radios operating in extended temperature ranges. IC Role / Device Role / Timing Role: Zener shunt regulator establishing fixed DC bias point for transistor amplifiers. Use Value: Delivers stable 18.0 V despite input ripple up to 2 Vpp and load transients ≤10 mA, ensuring signal integrity. |
| Satellite Payload Voltage Clamp | Nuclear Instrumentation Reference |
Use Scenario: Clamps transient overvoltage on 24 V bus lines in LEO satellite payload telemetry subsystems. IC Role / Device Role / Timing Role: Overvoltage protection element limiting bus voltage to 18.0 V during ESD or lightning-induced surges. Use Value: Responds within <1 ns to fast transients while surviving 100 krad(Si) total ionizing dose per MicroNote 050. | Use Scenario: Serves as primary voltage reference in radiation-hardened neutron detector front-end amplifiers. IC Role / Device Role / Timing Role: Precision Zener reference setting gain and offset in charge-sensitive preamplifiers. Use Value: Exhibits <0.1% parametric shift after 100 krad(Si), enabling calibration stability over multi-year mission lifetimes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4112US | Same 18.0 V VZ, but in surface-mount DO-213AA package; no MIL qualification | Used in commercial PCBs where space constraints prohibit axial-leaded components | Select when RoHS-compliant SMT assembly is required and MIL screening is unnecessary |
| JANTX1N4112-1 | Identical electrical specs and DO-35 package, but qualified to JANTX level (enhanced screening vs. JAN) | Required for systems demanding higher reliability assurance than JAN, e.g., missile guidance subsystems | Select when procurement specifications mandate JANTX-level testing per MIL-PRF-19500/435 |
Compared with 1N4112US and JANTX1N4112-1, the JAN1N4112-1 uniquely balances full MIL-qualified reliability at the entry-level JAN grade with axial-leaded manufacturability - making it optimal for cost-sensitive defense programs requiring traceable, screened components without JANTX overhead.
Availability
JAN1N4112-1 is available at Aetrix Electronics and suitable for avionics power reference, military radio bias supply, and satellite payload voltage clamp applications requiring stable component supply, full traceability, and MIL-qualified consistency.
Supply support for JAN1N4112-1 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JAN1N4112-1 belongs to Microsemi's legacy 1N4099–1N4135 series of metallurgically bonded Zener diodes - engineered specifically for precision voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance for JAN1N4112-1?
The JAN1N4112-1 has a nominal Zener voltage of 18.0 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 under thermal equilibrium at 25 °C with IZT = 250 mA.
Is JAN1N4112-1 RoHS compliant?
No - the JAN1N4112-1 is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants (blank reliability level), not for JAN-level parts. The JAN1N4112-1 uses traditional tin-lead plating per MIL-STD-750.
What is the maximum reverse leakage current for JAN1N4112-1?
The maximum reverse leakage current (IR) for JAN1N4112-1 is 0.05 µA at VR = 14.4 V (80% of VZ), as specified in the Electrical Characteristics table. This ultra-low leakage supports low-power bias networks and high-impedance reference designs.
Can JAN1N4112-1 be used in surface-mount assemblies?
No - the JAN1N4112-1 is packaged exclusively in the axial-leaded DO-35 (DO-204AH) glass case. For surface-mount equivalents, Microsemi offers the 1N4112UR-1 in DO-213AA and 1PMT4112 in DO-216, but these lack JAN qualification and differ in thermal and mechanical performance.
What is the temperature coefficient of JAN1N4112-1?
The temperature coefficient (αVZ) of JAN1N4112-1 is +0.090 %/°C, meaning its Zener voltage increases by 0.090% per degree Celsius rise in junction temperature. This value is confirmed in the Electrical Characteristics table and critical for thermal drift budgeting in precision references.
JAN1N4112-1 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:
- ±5%
- 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)
JAN1N4112-1 FAQ
1.How can I place an order for JAN1N4112-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4112-1 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 JAN1N4112-1 reliable?
The price and inventory of JAN1N4112-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4112-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4112-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4112-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4112-1?
JAN1N4112-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4112-1 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 JAN1N4112-1?
For technical support, including JAN1N4112-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4112-1 requirements.
6.How does Aetrix verify that JAN1N4112-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4112-1 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 JAN1N4112-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4112-1?
All JAN1N4112-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4112-1, 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 JAN1N4112-1 part is unused and in its original packaging.
Return procedure for JAN1N4112-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4112-1 Tags
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