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Microchip Technology JANS1N4112C-1/TR
- Part No.:
- JANS1N4112C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4112C-1/TR.pdf
- Description:
- DIODE ZENER 18V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,192
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Product details
Overview
JANS1N4112C-1/TR from Microsemi is a 18 V, 2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation with 100 Ω dynamic impedance at 250 mA test current, 0.05 µA reverse leakage at 14.4 V, and +0.090 %/°C temperature coefficient.
For engineers reviewing the JANS1N4112C-1/TR datasheet, JANS1N4112C-1/TR pinout, JANS1N4112C-1/TR application, or JANS1N4112C-1/TR equivalent, key selection criteria include Zener voltage tolerance (2%), radiation hardness, hermetic glass packaging, noise density (≤1 µV/√Hz), and MIL-qualified thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures low noise and stable long-term Zener voltage drift under thermal cycling and radiation exposure.
It is rated for 500 mW average power dissipation at 25 °C lead temperature, linearly derated to zero at +175 °C, and exhibits minimal capacitance (<2 pF typical at 18 V) and non-ESD-sensitive behavior per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 18.0 V ±2% at 250 mA - defines precise regulation point for reference and biasing circuits |
| Power Dissipation | 500 mW @ TL = 25 °C - supports stable operation in compact, unheatsinked layouts |
| Dynamic Impedance ZZT | 100 Ω max @ IZT = 250 mA - ensures low output impedance for ripple rejection |
| Reverse Leakage IR | 0.05 µA max @ VR = 14.4 V - enables ultra-low standby current in precision references |
| Temp. Coefficient αVZ | +0.090 %/°C - allows predictable voltage drift compensation in wide-temperature systems |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise analog references and sensor excitation |
| Junction Temp. Range | –65 to +175 °C - supports operation in extreme environmental conditions |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by color band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connected to supply rail or load requiring stabilized 18 V reference |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated reliability for spaceflight, avionics, and nuclear-hardened systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and radiation |
| Hermetic glass encapsulation | Prevents moisture ingress and parametric shift over 20+ year service life |
| Low noise density (≤1 µV/√Hz) | Enables use in high-resolution ADC references and precision op-amp bias networks |
| 1% to 5% Zener tolerance options | Supports cost-performance trade-off across commercial and high-reliability variants |
Applications
| Avionics Power Reference | Satellite Onboard Computer Bias |
|---|---|
Use Scenario: Providing stable 18 V reference for analog-to-digital converters and sensor signal conditioning in flight control units. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail against load transients and temperature variation. Use Value: Maintains <±0.2% output stability over –55 to +125 °C ambient with <1 µV/√Hz noise floor. | Use Scenario: Generating precision bias voltages for radiation-tolerant FPGA configuration circuits in LEO satellites. IC Role / Device Role / Timing Role: High-reliability Zener reference ensuring startup integrity after single-event effects. Use Value: JANS-level qualification and inherent radiation hardness eliminate need for shielding or redundancy. |
| Nuclear Instrumentation Front-End | Missile Guidance System Calibration |
Use Scenario: Stabilizing detector bias supplies in gamma spectroscopy modules exposed to neutron flux. IC Role / Device Role / Timing Role: Low-drift, low-noise shunt regulator maintaining gain calibration of charge-sensitive amplifiers. Use Value: +0.090 %/°C tempco and ≤0.05 µA leakage enable sub-0.1% gain error over full mission thermal profile. | Use Scenario: Supplying reference voltage for inertial measurement unit (IMU) analog front-end calibration during pre-launch checkout. IC Role / Device Role / Timing Role: Trusted voltage standard traceable to NIST via MIL-qualified production lot testing. Use Value: JAN/JANS qualification provides documented lot-level test reports and 100% screening data for DoD acceptance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4112US-1 | Same 18 V, 2% spec but in DO-213AA surface-mount package; no axial leads | Requires PCB re-layout for SMT assembly; lacks axial mounting flexibility | Select when automated placement and board space savings outweigh manual assembly needs |
| JANTXV1N4112C-1 | Identical electrical specs and DO-35 package, but qualified only to JANTXV level (not JANS) | Approved for high-reliability ground systems but not spaceflight or nuclear environments | Select for cost-sensitive defense programs where full JANS screening is not mandated |
Compared with JANS1N4112C-1/TR, the 1N4112US-1 offers SMT compatibility at the expense of mechanical mounting versatility, while JANTXV1N4112C-1 reduces qualification cost without compromising electrical performance-enabling tiered sourcing based on mission assurance requirements.
Availability
JANS1N4112C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite onboard computer bias, and nuclear instrumentation front-end applications requiring stable component supply, full traceability, and extended lifecycle support.
Supply support for JANS1N4112C-1/TR 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 JANS1N4112C-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage reference stability in radiation-exposed, thermally extreme, and long-duration mission-critical systems.
FAQ
What is the Zener voltage and tolerance of JANS1N4112C-1/TR?
JANS1N4112C-1/TR has a nominal Zener voltage of 18.0 V with a tight ±2% tolerance at 250 mA test current. This tolerance is indicated by the "C" suffix in the part number and is verified per MIL-PRF-19500/435 screening requirements for JANS-level devices.
Is JANS1N4112C-1/TR suitable for space applications?
Yes, JANS1N4112C-1/TR is qualified to JANS level per MIL-PRF-19500/435, including radiation hardness characterization per Microsemi MicroNote 050. Its hermetic DO-35 package and metallurgical bond construction make it suitable for low-earth orbit and deep-space missions requiring long-term parametric stability.
What is the maximum power dissipation and derating behavior of JANS1N4112C-1/TR?
JANS1N4112C-1/TR is rated for 500 mW average power dissipation at 25 °C lead temperature. Power must be linearly derated starting at 50 °C lead temperature, reaching zero at +175 °C. For ambient conditions on a typical FR4 board, derating begins at 25 °C and follows the same linear slope.
Does JANS1N4112C-1/TR have low noise performance?
Yes, JANS1N4112C-1/TR exhibits ≤1 µV/√Hz noise density at its 18 V Zener voltage, measured in the 1–3 kHz band at 250 mA. This low-noise characteristic is enabled by its metallurgically bonded structure and makes it appropriate for precision analog references and sensor excitation circuits.
What does the "TR" suffix indicate in JANS1N4112C-1/TR?
The "TR" suffix in JANS1N4112C-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This format is standard for volume orders and supports consistent handling and traceability throughout manufacturing and inspection processes.
JANS1N4112C-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- 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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4112C-1/TR FAQ
1.How can I place an order for JANS1N4112C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4112C-1/TR 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 JANS1N4112C-1/TR reliable?
The price and inventory of JANS1N4112C-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4112C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4112C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4112C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4112C-1/TR?
JANS1N4112C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4112C-1/TR 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 JANS1N4112C-1/TR?
For technical support, including JANS1N4112C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4112C-1/TR requirements.
6.How does Aetrix verify that JANS1N4112C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4112C-1/TR 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 JANS1N4112C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4112C-1/TR?
All JANS1N4112C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4112C-1/TR, 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 JANS1N4112C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4112C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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