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Microchip Technology JANTX1N4118C-1
- Part No.:
- JANTX1N4118C-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4118C-1.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,801
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Product details
Overview
JANTX1N4118C-1 from Microsemi is a 500 mW, 27.0 V ±2% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability applications. It delivers stable voltage regulation at 250 mA test current with 150 Ω dynamic impedance, low noise density (1 µV/√Hz), and operates across –65 °C to +175 °C junction temperature range.
For engineers reviewing the JANTX1N4118C-1 datasheet, JANTX1N4118C-1 pinout, JANTX1N4118C-1 application, or JANTX1N4118C-1 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (250 °C/W junction-to-lead), radiation hardness, RoHS compliance status, and MIL-qualified reliability level.
Technical Context
This device functions as a precision shunt voltage regulator in feedback loops and reference circuits where stable DC biasing under wide current and temperature variation is required. Its metallurgical bond construction ensures long-term parameter stability, while its hermetically sealed DO-35 glass package provides immunity to moisture and contaminants.
The JANTX1N4118C-1 exhibits a positive temperature coefficient of +0.090 %/°C, enabling predictable drift compensation in multi-diode references. Its low 1 µV/√Hz noise density at 27 V supports use in low-noise analog references and precision instrumentation front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±2% at 250 mA - defines precise regulation point for reference design |
| Power Dissipation | 500 mW @ 25 °C - sets maximum continuous power handling before derating |
| Dynamic Impedance ZZT | 150 Ω @ 250 mA - determines output voltage variation under load current changes |
| Noise Density | 1 µV/√Hz @ 25 °C - enables low-noise analog reference applications |
| Temp Coefficient αVZ | +0.090 %/°C - allows accurate thermal drift modeling in reference networks |
| Junction Temp Range | –65 °C to +175 °C - supports operation in aerospace, downhole, and military environments |
| Reverse Leakage IR | 10 nA @ 21.6 V - ensures minimal parasitic current in high-impedance bias networks |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by color band; banded end is anode when used in forward conduction, but functions as cathode (positive terminal) during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference Ground Node | Connected to system ground or common return in shunt regulator configuration |
| Cathode (banded end) | Regulated Output Node | Provides stable 27.0 V output referenced to anode; must be biased positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability per military reliability standards |
| Metallurgical bond construction | Ensures long-term Zener voltage stability and resistance to parameter shift under thermal cycling |
| Hermetically sealed glass package | Prevents moisture ingress and corrosion, critical for mission-critical and space-grade applications |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for TID-sensitive environments |
| Low capacitance (typ. <1.5 pF) | Minimizes high-frequency loading in RF bias and timing reference circuits |
Applications
| Aerospace Power Reference | Military Avionics Biasing |
|---|---|
Use Scenario: Providing stable 27 V reference for ADC voltage scaling and sensor excitation in satellite power management units. IC Role / Device Role / Timing Role: Shunt voltage reference element in precision analog signal chains. Use Value: Maintains ±0.54 V regulation accuracy over –55 °C to +125 °C ambient due to tight ±2% tolerance and known +0.090 %/°C TC. | Use Scenario: Generating calibrated bias voltages for radar receiver LNAs and IF amplifiers in airborne electronic warfare systems. IC Role / Device Role / Timing Role: Precision DC reference source in RF subsystems requiring low-noise, high-stability bias. Use Value: Delivers 1 µV/√Hz noise density and <1.5 pF capacitance to preserve RF gain flatness and SNR. |
| Downhole Instrumentation | Nuclear Plant Control Logic |
Use Scenario: Regulating supply rails for MEMS pressure transducers and telemetry ICs operating at 175 °C in oil/gas well logging tools. IC Role / Device Role / Timing Role: High-temperature shunt regulator maintaining reference integrity under extreme thermal stress. Use Value: Operates continuously up to +175 °C junction temperature with full MIL-qualified reliability screening. | Use Scenario: Supplying fail-safe reference voltage to safety-critical PLC input modules in nuclear reactor control cabinets. IC Role / Device Role / Timing Role: Radiation-hardened voltage reference ensuring deterministic behavior under neutron/gamma exposure. Use Value: Inherent radiation tolerance eliminates need for shielding or derating in Class 1E safety systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4118US-1 | Same 27.0 V ±2% Zener voltage, but in surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair | Select when automated assembly, space-constrained layouts, or vibration resistance are priorities |
| JANS1N4118C-1 | Identical electrical specs and package, but qualified to JANS (highest MIL reliability level) with additional screening | Required for spaceflight, nuclear, or other Class S applications demanding zero-defect assurance | Select only when JANS-level documentation, lot traceability, and extended burn-in are contractually mandated |
Compared with JANTX1N4118C-1, the 1N4118US-1 offers identical regulation performance in a compact SMT form factor, while JANS1N4118C-1 adds enhanced screening for ultra-high-reliability deployment-neither is pin-compatible due to differing packages or qualification scope.
Availability
JANTX1N4118C-1 is available at Aetrix Electronics and suitable for aerospace power reference, military avionics biasing, and downhole instrumentation requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4118C-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 JANTX1N4118C-1 belongs to Microsemi's MIL-qualified Zener diode family, engineered specifically for precision voltage reference and regulation in harsh-environment systems where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4118C-1?
JANTX1N4118C-1 has a nominal Zener voltage of 27.0 V with a ±2% tolerance, meaning the actual regulation voltage falls between 26.46 V and 27.54 V at 250 mA test current and 25 °C. This tighter tolerance than standard 5% Zeners enables higher-accuracy reference designs without external trimming.
Is JANTX1N4118C-1 RoHS compliant?
JANTX1N4118C-1 is not RoHS compliant; the "e3" suffix denotes RoHS compliance, which applies only to commercial-grade versions. As a JANTX-qualified military part, JANTX1N4118C-1 uses tin-lead plating per MIL-STD-750 and does not meet EU RoHS Directive requirements.
What is the maximum reverse leakage current for JANTX1N4118C-1?
The maximum reverse leakage current (IR) for JANTX1N4118C-1 is 10 nA at 21.6 V (80% of VZ). This ultra-low leakage supports high-impedance bias networks and minimizes error in precision reference dividers where leakage-induced voltage drop must be negligible.
Can JANTX1N4118C-1 be used in surface-mount designs?
No-JANTX1N4118C-1 uses a DO-35 axial-leaded glass package and is not compatible with surface-mount assembly. For SMT equivalents, consider the 1N4118US-1 in DO-213AA package, which shares identical electrical specifications but requires different footprint and reflow profile.
What is the thermal resistance junction-to-lead for JANTX1N4118C-1?
JANTX1N4118C-1 has a thermal resistance of 250 °C/W junction-to-lead when measured with 3/8 inch (10 mm) lead length from body. This value is critical for calculating junction temperature rise under load and must be used-not RθJA-when heatsinking via leads in high-power or high-temperature applications.
JANTX1N4118C-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):
- 27 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 20.5 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)
JANTX1N4118C-1 FAQ
1.How can I place an order for JANTX1N4118C-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4118C-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 JANTX1N4118C-1 reliable?
The price and inventory of JANTX1N4118C-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4118C-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4118C-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4118C-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4118C-1?
JANTX1N4118C-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4118C-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 JANTX1N4118C-1?
For technical support, including JANTX1N4118C-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4118C-1 requirements.
6.How does Aetrix verify that JANTX1N4118C-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4118C-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 JANTX1N4118C-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4118C-1?
All JANTX1N4118C-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4118C-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 JANTX1N4118C-1 part is unused and in its original packaging.
Return procedure for JANTX1N4118C-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4118C-1 Tags
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