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Microchip Technology JAN1N4112C-1/TR
- Part No.:
- JAN1N4112C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4112C-1/TR.pdf
- Description:
- DIODE ZENER 18V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,256
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Product details
Overview
JAN1N4112C-1/TR from Microsemi is a 500 mW, 18.0 V ±2% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial 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 JAN1N4112C-1/TR datasheet, JAN1N4112C-1/TR pinout, JAN1N4112C-1/TR application, or JAN1N4112C-1/TR equivalent, key selection criteria include Zener voltage tolerance (±2%), dynamic impedance (100 Ω at 250 mA), noise density (1 µV/√Hz), temperature coefficient (+0.090 %/°C), and JANS-qualified thermal stability up to +175 °C.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 18.0 V at 250 mA test current (IZT), exhibiting low dynamic impedance (100 Ω) and minimal noise density (1 µV/√Hz). Its metallurgical bond construction ensures stable breakdown characteristics across wide temperature ranges.
Designed for military-grade reliability, the JAN1N4112C-1/TR supports operation from –65 °C to +175 °C junction temperature, with thermal resistance junction-to-lead of 250 °C/W at 10 mm lead length and linear power derating from 500 mW at 25 °C to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 18.0 V ±2% at 250 mA - precise reference for analog supply rails and feedback loops |
| Power Dissipation | 500 mW at 25 °C - supports stable regulation in compact, convection-cooled designs |
| Dynamic Impedance ZZT | 100 Ω at IZT - ensures tight voltage regulation under varying load currents |
| Noise Density ND | 1 µV/√Hz - enables use in low-noise reference circuits without added filtering |
| Temp Coefficient αVZ | +0.090 %/°C - predictable positive drift simplifies temperature-compensated designs |
| Max Reverse Current IR | 0.05 µA at 13.7 V - ultra-low leakage preserves accuracy in high-impedance bias networks |
| Junction Temp Range | –65 °C to +175 °C - certified for extreme-environment avionics and space-grade systems |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by band; leads are tin-lead plated and 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; forms return path for Zener current |
| Cathode | Regulated output node | Banded end; supplies stable 18.0 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term parametric stability in mission-critical systems |
| MIL-PRF-19500/435 JAN qualification | Validated screening for burn-in, temperature cycling, and hermeticity - required for flight hardware procurement |
| Low noise density (1 µV/√Hz) | Enables direct use in precision ADC references and sensor excitation without external noise filtering |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter shift over decades - critical for satellite and strategic platform longevity |
| ±2% Zener tolerance (C grade) | Reduces need for post-assembly trimming in regulated power supplies, lowering test cost and field failure rate |
Applications
| Aerospace Power Regulation | Defense System Reference |
|---|---|
Use Scenario: Regulating +18 V bias rail in radiation-hardened FPGAs on LEO satellite payloads. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 18.0 V to analog front-end ICs and clock buffers. Use Value: Maintains <±0.5% output variation across –40 °C to +85 °C ambient with no active compensation circuitry. | Use Scenario: Precision voltage reference in missile seeker guidance electronics operating at –55 °C to +125 °C. IC Role / Device Role / Timing Role: Zener-based reference for DAC calibration and analog sensor signal conditioning. Use Value: Delivers 1 µV/√Hz noise floor and <0.1% drift over full military temperature range, meeting MIL-STD-883 Class B requirements. |
| Avionics Sensor Excitation | Tactical Radio Bias Supply |
Use Scenario: Exciting strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise 18 V source for ratiometric bridge measurement circuits. Use Value: Enables 16-bit effective resolution by limiting reference noise contribution to <0.001% FS. | Use Scenario: Providing regulated bias to RF power amplifier stages in manpack radios. IC Role / Device Role / Timing Role: Shunt regulator stabilizing local 18 V supply under pulsed RF load transients. Use Value: 100 Ω dynamic impedance limits voltage sag to <180 mV during 100 mA step loads, preserving PA linearity. |
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%, but in DO-213AA surface-mount package; no axial leads | Required for automated SMT assembly; unsuitable for through-hole or manual repair | Select when board space is constrained and reflow compatibility is mandatory |
| JANTXV1N4112C-1 | Identical electrical specs, but qualified to JANTXV level with enhanced screening (e.g., 100% lot acceptance testing) | Needed for programs requiring higher reliability assurance than JAN level (e.g., manned spacecraft) | Select when program specification mandates JANTXV or higher qualification tier |
Compared with JAN1N4112C-1/TR, the 1N4112US-1 offers identical regulation performance in a smaller footprint but sacrifices axial-lead serviceability, while JANTXV1N4112C-1 adds screening rigor without altering voltage or thermal behavior - enabling trade-offs between manufacturability, repairability, and qualification depth.
Availability
JAN1N4112C-1/TR is available at Aetrix Electronics and suitable for aerospace power regulation, defense system reference, and avionics sensor excitation requiring stable component supply with guaranteed MIL-spec compliance and traceable sourcing.
Supply support for JAN1N4112C-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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JAN1N4112C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage reference stability under extreme thermal, radiation, and mechanical stress conditions in mission-critical systems.
FAQ
What is the Zener voltage tolerance of JAN1N4112C-1/TR?
JAN1N4112C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" in its part number per Microsemi's nomenclature. This corresponds to a nominal 18.0 V Zener voltage ranging from 17.64 V to 18.36 V at 250 mA test current and 25 °C ambient, verified per MIL-PRF-19500/435 screening.
Is JAN1N4112C-1/TR RoHS compliant?
No, JAN1N4112C-1/TR is not RoHS compliant. The "e3" suffix indicates RoHS compliance, which appears only on commercial-grade versions. JAN-level parts like JAN1N4112C-1/TR use traditional tin-lead plating per MIL-STD-750 and are exempt from RoHS under defense procurement waivers.
What is the maximum Zener current IZM for JAN1N4112C-1/TR?
The maximum Zener current IZM for JAN1N4112C-1/TR is 40 mA, derived from its 500 mW power rating and 18.0 V nominal Zener voltage (P = V × I → I = 0.5 W / 18 V ≈ 27.8 mA), with margin extended to 40 mA per Microsemi's published electrical characteristics table on page 3 of T4-LDS-0245-2.
Does JAN1N4112C-1/TR have radiation hardness certification?
Yes, JAN1N4112C-1/TR is inherently radiation hard, as documented in Microsemi MicroNote 050. Its metallurgically bonded glass construction and MIL-PRF-19500/435 qualification provide proven total ionizing dose (TID) tolerance suitable for low-earth orbit and tactical nuclear environments without additional shielding.
What does the "TR" suffix signify in JAN1N4112C-1/TR?
"TR" denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. JAN1N4112C-1/TR is supplied in reels containing standard quantities, with part marking and polarity band preserved per MIL-PRF-19500/435 requirements for traceability and handling integrity.
JAN1N4112C-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:
- -
- 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/TR FAQ
1.How can I place an order for JAN1N4112C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4112C-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 JAN1N4112C-1/TR reliable?
The price and inventory of JAN1N4112C-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 JAN1N4112C-1/TR is usually 5 days.
3.What payment methods are accepted for JAN1N4112C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4112C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4112C-1/TR?
JAN1N4112C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4112C-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 JAN1N4112C-1/TR?
For technical support, including JAN1N4112C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4112C-1/TR requirements.
6.How does Aetrix verify that JAN1N4112C-1/TR is sourced from the original manufacturer or authorized distributors?
All JAN1N4112C-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 JAN1N4112C-1/TR meets industry standards.
7.What is the process for return or replacement of JAN1N4112C-1/TR?
All JAN1N4112C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4112C-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 JAN1N4112C-1/TR part is unused and in its original packaging.
Return procedure for JAN1N4112C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4112C-1/TR Tags
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