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Microchip Technology JAN1N4112C-1
- Part No.:
- JAN1N4112C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4112C-1.pdf
- Description:
- DIODE ZENER 18V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:6,192
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Product details
Overview
JAN1N4112C-1 from Microsemi is a 500 mW, 18.0 V ±2% 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, reference circuits, and overvoltage protection.
For engineers reviewing the JAN1N4112C-1 datasheet, JAN1N4112C-1 pinout, JAN1N4112C-1 application, or JAN1N4112C-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 axial-leaded construction for stable operation across -65 °C to +175 °C.
Technical Context
This Zener diode operates in reverse breakdown with cathode band indicating polarity; it delivers precise 18.0 V regulation under DC bias at IZT = 250 mA, with low noise density (1 µV/√Hz typical) and minimal capacitance (<2 pF). Its metallurgical bond ensures mechanical robustness and thermal stability.
The device exhibits a positive temperature coefficient (+0.090 %/°C), enabling predictable voltage drift over temperature, and supports linear power derating from 500 mW at 25 °C to zero at 175 °C with junction-to-lead thermal resistance of 250 °C/W at 10 mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 18.0 V ±2% at 250 mA - defines regulated output voltage with tight tolerance for precision references. |
| Power Dissipation | 500 mW @ TC = 25 °C - sets maximum continuous power handling before thermal derating begins at 50 °C. |
| Zener Impedance | 100 Ω @ 250 mA - determines regulation stiffness and AC ripple rejection capability. |
| Reverse Leakage | 0.05 µA @ 14.4 V - ensures minimal standby current in high-impedance bias networks. |
| Temp. Coefficient | +0.090 %/°C - quantifies voltage drift magnitude per degree Celsius for thermal design margining. |
| Noise Density | 1 µV/√Hz - enables low-noise analog references where spectral purity affects ADC accuracy. |
| Junction Temp. Range | -65 °C to +175 °C - supports operation in extreme environments including space-grade and military platforms. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction; cathode indicated by single black band on body; leads are tin-lead or RoHS-compliant matte-tin plated per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower potential node during Zener regulation mode. |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to unregulated input; provides stable 18.0 V output when reverse biased. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bonding | Ensures mechanical integrity and thermal cycling reliability in harsh vibration environments. |
| MIL-PRF-19500/435 qualification | Validates performance to JAN reliability level for mission-critical avionics and defense systems. |
| Low noise density | 1 µV/√Hz enables use in precision analog references without added filtering overhead. |
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive atmospheres. |
| ESD immunity | Non-sensitive per MIL-STD-750 method 1020 - eliminates need for external ESD protection in assembly. |
Applications
| Avionics Power Reference | Spacecraft Voltage Clamp |
|---|---|
Use Scenario: Regulating auxiliary 18 V rail in flight control computer power distribution unit. IC Role / Device Role / Timing Role: Zener diode providing stable 18.0 V reference for op-amp comparators monitoring bus voltage. Use Value: Tight ±2% tolerance and +0.090 %/°C TC ensure comparator trip points remain within 0.15 V over -55 °C to +125 °C operational range. | Use Scenario: Clamping transient overvoltage on solar array regulator input during ESD events. IC Role / Device Role / Timing Role: Protective Zener shunt limiting voltage spikes to safe levels before LDO input stage. Use Value: Hermetic DO-35 package and JANS-qualified construction withstand radiation exposure while maintaining 100 Ω Zener impedance for fast clamping response. |
| Ground-Based Radar Bias Supply | Tactical Radio RF Stage Reference |
Use Scenario: Generating stable bias voltage for GaN PA driver stages in S-band radar transmitters. IC Role / Device Role / Timing Role: Precision Zener establishing fixed gate bias point independent of supply variation. Use Value: 500 mW rating and 250 °C/W RθJL allow direct mounting to heatsinked chassis for sustained 250 mA operation without thermal runaway. | Use Scenario: Providing low-noise 18 V reference for VCO tuning voltage in software-defined radio front-end. IC Role / Device Role / Timing Role: Low-noise Zener source feeding DAC output buffer to minimize phase noise degradation. Use Value: 1 µV/√Hz noise density prevents measurable increase in VCO integrated phase jitter compared to ultra-low-noise LDO alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4112US-1 | Same 18.0 V ±2% Zener voltage, but in surface-mount DO-213AA package; no axial leads. | Used where board space constraints prohibit axial-leaded components or automated placement is required. | Select when transitioning from through-hole to SMT assembly; requires PCB redesign due to different footprint and thermal path. |
| JANTXV1N4112C | Identical electrical specs and DO-35 package, but qualified to JANTXV level (higher screening than JAN). | Required for programs specifying JANTXV reliability level per MIL-PRF-19500/435. | Select only if JANTXV qualification is mandated; otherwise JAN1N4112C-1 meets standard high-reliability requirements at lower cost. |
Compared with 1N4112US-1 and JANTXV1N4112C, the JAN1N4112C-1 offers optimal balance of proven axial-leaded reliability, JAN-level qualification, and compatibility with legacy military hardware designs requiring DO-35 form factor and screening.
Availability
JAN1N4112C-1 is available at Aetrix Electronics and suitable for avionics power references, spacecraft voltage clamps, and ground-based radar bias supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for JAN1N4112C-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 ICs, discrete devices, and RF solutions for aerospace, defense, and industrial markets.
The JAN1N4112C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where radiation hardness, thermal stability, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance for JAN1N4112C-1?
The JAN1N4112C-1 has a nominal Zener voltage of 18.0 V with a tolerance of ±2%, denoted by the "C" 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 operating temperature range of -65 °C to +175 °C as supported by its MIL-PRF-19500/435 JAN qualification.
Is JAN1N4112C-1 RoHS compliant?
No, JAN1N4112C-1 is not RoHS compliant. The "e3" RoHS designation appears only on commercial-grade versions (e.g., 1N4112C-1e3); the JAN prefix indicates military-specification qualification, which retains traditional tin-lead plating per MIL-STD-750 method 2026. RoHS compliance is explicitly excluded for JAN-level parts in Microsemi's documentation.
What is the maximum reverse leakage current for JAN1N4112C-1?
The maximum reverse leakage current for JAN1N4112C-1 is 0.05 µA at VR = 14.4 V (80% of nominal Zener voltage), as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This value is measured at 25 °C and reflects the device's ability to maintain high impedance in non-regulating states.
Does JAN1N4112C-1 have radiation hardness properties?
Yes, JAN1N4112C-1 is inherently radiation hard as documented in Microsemi MicroNote 050. Its metallurgically bonded glass construction and DO-35 hermetic package provide tolerance to total ionizing dose (TID) and displacement damage, making it suitable for low-earth orbit and tactical radiation environments without additional shielding.
What is the thermal resistance junction-to-lead for JAN1N4112C-1?
The thermal resistance junction-to-lead (RθJL) for JAN1N4112C-1 is 250 °C/W when measured at 10 mm lead length from the package body, per the Maximum Ratings table on page 1 of T4-LDS-0245-2. This value assumes standard mounting conditions and is used to calculate allowable power dissipation at elevated lead temperatures.
JAN1N4112C-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:
- ±2%
- 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)
JAN1N4112C-1 FAQ
1.How can I place an order for JAN1N4112C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4112C-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 JAN1N4112C-1 reliable?
The price and inventory of JAN1N4112C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4112C-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4112C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4112C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4112C-1?
JAN1N4112C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4112C-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 JAN1N4112C-1?
For technical support, including JAN1N4112C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4112C-1 requirements.
6.How does Aetrix verify that JAN1N4112C-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4112C-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 JAN1N4112C-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4112C-1?
All JAN1N4112C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4112C-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 JAN1N4112C-1 part is unused and in its original packaging.
Return procedure for JAN1N4112C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4112C-1 Tags
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