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Microchip Technology JANS1N4118C-1/TR
- Part No.:
- JANS1N4118C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4118C-1/TR.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,360
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Product details
Overview
JANS1N4118C-1/TR from Microsemi is a 27.0 V, 500 mW, 2% tolerance 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 requiring stable voltage regulation under wide temperature and current variation.
For engineers reviewing the JANS1N4118C-1/TR datasheet, JANS1N4118C-1/TR pinout, JANS1N4118C-1/TR application, or JANS1N4118C-1/TR equivalent, key selection factors include its 27.0 V nominal Zener voltage at 250 mA test current, 150 Ω dynamic impedance, 0.01 µA maximum reverse leakage at 20.5 V, radiation-hardened construction, and hermetically sealed axial-leaded DO-35 package.
Technical Context
This device operates as a precision shunt voltage regulator with a specified Zener test current (IZT) of 250 mA and exhibits a positive temperature coefficient of +0.090 %/°C - critical for thermal stability in high-temperature environments. Its metallurgical bond ensures low noise density (1 µV/√Hz typical at lower voltages) and minimal capacitance, supporting low-jitter reference design.
The JANS1N4118C-1/TR is rated for junction temperatures from –65 °C to +175 °C and features a thermal resistance of 250 °C/W junction-to-lead (with 10 mm lead length), enabling reliable operation in conduction-cooled military platforms where ambient thermal management is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 27.0 V at 250 mA - defines precise regulation point for biasing or reference circuits |
| Zener Tolerance | ±2% - tighter than standard ±5%, reducing calibration overhead in precision systems |
| Power Dissipation | 500 mW @ TC = 25 °C - supports continuous regulation in compact, unheatsinked layouts |
| Dynamic Impedance | 150 Ω @ IZT - determines output voltage deviation under load transients |
| Reverse Leakage Current | ≤0.01 µA @ 20.5 V - ensures negligible error current in high-impedance reference nodes |
| Temperature Coefficient | +0.090 %/°C - enables predictable drift compensation in wide-temperature avionics |
| Package | DO-35 (DO-204AH) - axial-leaded, hermetically sealed glass package qualified for JANS-level reliability |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground or low-side reference node | Connected to circuit common; establishes return path for Zener current |
| Cathode | Regulated output / voltage reference node | Banded end; supplies stable 27.0 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Meets highest military reliability screening for space and strategic systems |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for LEO/SatCom without shielding |
| Low noise density | 1 µV/√Hz typical - preserves signal integrity in analog front-ends and precision ADC references |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over 20+ year service life in harsh environments |
Applications
| Avionics Power Reference | Satellite Bus Voltage Monitor |
|---|---|
Use Scenario: Providing stable 27.0 V reference for ADCs monitoring 28 V DC bus in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference regulating node against load and temperature variation. Use Value: ±2% tolerance and +0.090 %/°C TC enable <±0.5% total error across –55 °C to +125 °C operational range. | Use Scenario: Biasing radiation-tolerant op-amps in satellite telemetry conditioning circuits. IC Role / Device Role / Timing Role: Precision Zener reference source for analog signal scaling and offset correction. Use Value: Metallurgical bond and hermetic DO-35 package ensure zero parametric shift after 100 krad(Si) total ionizing dose exposure. |
| Tactical Radio RF Stage Bias | Nuclear Instrumentation Calibration |
Use Scenario: Setting gate bias for GaN PA stages in manpack radios operating in desert environments. IC Role / Device Role / Timing Role: Temperature-stable voltage clamp protecting amplifier input from overvoltage transients. Use Value: 150 Ω dynamic impedance limits voltage excursion to <±0.3 V during 100 mA load steps, preserving linearity. | Use Scenario: Calibrating high-precision charge amplifiers in neutron detection systems. IC Role / Device Role / Timing Role: Low-noise, ultra-stable DC reference for gain-setting networks. Use Value: 1 µV/√Hz noise density prevents degradation of sub-mV signal resolution in pulse-height analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4118C-1 | Same electrical specs but qualified only to JANTXV level; lacks JANS-level burn-in and lot acceptance testing | Approved for airborne non-safety-critical subsystems; not cleared for launch vehicle or nuclear command systems | Select when full JANS screening is not mandated but 27.0 V/2% performance is required |
| 1N4118C-1/TR | Commercial-grade version; identical DO-35 package and Zener characteristics but no MIL-qualified screening | Restricted to ground-based industrial or test equipment; not rated for radiation or extended temperature extremes | Choose for cost-sensitive prototyping or non-mission-critical bench instrumentation |
Compared with JANTXV1N4118C-1 and 1N4118C-1/TR, the JANS1N4118C-1/TR delivers verified long-term stability under thermal shock, radiation, and humidity stress - essential for systems where field failure carries safety or mission loss consequences.
Availability
JANS1N4118C-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage monitor, and tactical radio RF stage bias applications requiring stable component supply, full traceability, and guaranteed obsolescence support.
Supply support for JANS1N4118C-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 JANS1N4118C-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability outweigh cost sensitivity.
FAQ
What is the Zener voltage and tolerance of JANS1N4118C-1/TR?
JANS1N4118C-1/TR has a nominal Zener voltage of 27.0 V at 250 mA test current with a tight ±2% tolerance. This value is measured under thermal equilibrium at 25 °C and reflects the device's precision regulation capability in high-reliability applications such as avionics and satellite systems where calibration margin is constrained.
Is JANS1N4118C-1/TR radiation hardened?
Yes, JANS1N4118C-1/TR is inherently radiation hard per Microsemi MicroNote 050 due to its metallurgically bonded structure and hermetic DO-35 packaging. It is qualified for use in low-Earth orbit and nuclear instrumentation without supplemental shielding, maintaining Zener voltage stability after total ionizing dose exposure up to 100 krad(Si).
What does the "C" in JANS1N4118C-1/TR signify?
The "C" in JANS1N4118C-1/TR denotes ±2% Zener voltage tolerance per the Microsemi part nomenclature. It distinguishes this variant from the standard ±5% (blank suffix) and ±1% (D suffix) versions within the same 1N4118-1 family, enabling tighter system-level voltage accuracy without post-manufacture trimming.
What is the maximum reverse leakage current for JANS1N4118C-1/TR?
JANS1N4118C-1/TR has a maximum reverse leakage current of 0.01 µA at 20.5 V (76% of nominal Zener voltage). This ultra-low leakage ensures minimal error current in high-impedance reference circuits, preserving accuracy in precision analog measurement and calibration systems.
Does JANS1N4118C-1/TR require derating above 25 °C?
Yes, JANS1N4118C-1/TR must be linearly derated from 500 mW starting at 25 °C ambient, reaching zero dissipation at 175 °C. For PCB-mounted operation, derating follows the curve in Figure 2 of T4-LDS-0245-2, ensuring safe thermal operation in conduction-cooled enclosures without forced airflow.
JANS1N4118C-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):
- 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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4118C-1/TR FAQ
1.How can I place an order for JANS1N4118C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4118C-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 JANS1N4118C-1/TR reliable?
The price and inventory of JANS1N4118C-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 JANS1N4118C-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4118C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4118C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4118C-1/TR?
JANS1N4118C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4118C-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 JANS1N4118C-1/TR?
For technical support, including JANS1N4118C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4118C-1/TR requirements.
6.How does Aetrix verify that JANS1N4118C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4118C-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 JANS1N4118C-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4118C-1/TR?
All JANS1N4118C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4118C-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 JANS1N4118C-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4118C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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