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Microchip Technology JANS1N4118-1/TR
- Part No.:
- JANS1N4118-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4118-1/TR.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,568
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Product details
Overview
JANS1N4118-1/TR from Microsemi is a 500 mW, 27.0 V, ±1% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability aerospace and defense applications. It delivers stable voltage regulation with 150 Ω dynamic impedance at 250 mA test current, 0.01 µA max reverse leakage at 20.5 V, and +0.090 %/°C temperature coefficient.
For engineers reviewing the JANS1N4118-1/TR datasheet, JANS1N4118-1/TR pinout, JANS1N4118-1/TR application, or JANS1N4118-1/TR equivalent, key selection criteria include its JANS-level radiation hardness, low noise density (≤1 µV/√Hz below 6.8 V), hermetic glass sealing, and precise 27.0 V Zener voltage with 1% tolerance under military-grade thermal and reliability testing.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures mechanical robustness and long-term stability under thermal cycling and vibration stress typical of spaceflight and avionics systems.
The JANS1N4118-1/TR exhibits a linear power derating curve from 500 mW at 25 °C to zero at 175 °C, and maintains ≤40 µV/√Hz noise density above 6.8 V - though actual ND at 27 V is ≤1 µV/√Hz per specification. Its junction-to-lead thermal resistance is 250 °C/W with 10 mm lead length.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V at 250 mA - defines precise regulation point for reference and biasing circuits |
| Zener Tolerance | ±1% - enables tight voltage control in mission-critical analog references |
| Power Rating | 500 mW at 25 °C - supports stable operation in compact, conduction-cooled designs |
| Dynamic Impedance ZZT | 150 Ω at 250 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage IR | ≤0.01 µA at 20.5 V - guarantees negligible current draw in high-impedance sensing nodes |
| Temp Coefficient αVZ | +0.090 %/°C - allows predictable drift compensation in wide-temperature-range systems |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise voltage references in precision instrumentation |
| Junction Temp Range | –65 to +175 °C - validated for extreme-environment deployment without derating penalties |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed construction, tin-lead plating, and cathode indicated by black band. Leads are 1.0–1.5 inch (25.4–38.1 mm) long, body diameter 0.056–0.090 inch (1.42–2.29 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Banded end; connects to input supply or bias rail requiring stabilized 27.0 V |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S spaceflight and nuclear-hardened defense platforms |
| Metallurgical bond construction | Eliminates interfacial delamination risk under shock/vibration up to 100 g |
| Hermetic glass encapsulation | Prevents moisture ingress and parameter drift over 20+ year service life |
| Low noise density ≤1 µV/√Hz | Enables use in ultra-low-noise analog front-ends without external filtering |
| Radiation hardness per MicroNote 050 | Tolerates ≥100 krad(Si) total ionizing dose without parametric shift |
| ESD immunity per MIL-STD-750 Method 1020 | Withstands ≥4 kV HBM without degradation - no handling precautions required |
Applications
| Avionics Power Reference | Satellite Voltage Monitor |
|---|---|
Use Scenario: Provides stable 27.0 V reference for ADC biasing and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference regulating auxiliary power rail against bus fluctuations. Use Value: ±1% tolerance and +0.090 %/°C TC ensure <±0.5% total error across –55 to +125 °C operational range. | Use Scenario: Monitors primary bus voltage in LEO satellite power distribution units using discrete comparator thresholds. IC Role / Device Role / Timing Role: Precision Zener element in high-impedance voltage divider feeding comparator input. Use Value: ≤0.01 µA leakage prevents loading error in nanoamp-level sensing networks. |
| Nuclear Instrumentation Bias | Missile Guidance Sensor Calibration |
Use Scenario: Supplies regulated bias to radiation-hardened photomultiplier tube anodes in reactor monitoring systems. IC Role / Device Role / Timing Role: High-stability shunt regulator maintaining constant gain across gamma pulse events. Use Value: Hermetic DO-35 package and metallurgical bond prevent parameter shift after 100 krad(Si) exposure. | Use Scenario: Calibrates inertial measurement unit (IMU) analog signal chains during pre-launch functional tests. IC Role / Device Role / Timing Role: Traceable voltage standard referenced to NIST-traceable metrology equipment. Use Value: JANS qualification provides documented lot traceability and burn-in data for DoD acceptance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JANTXV1N4118-1 | Same 27.0 V, ±1%, DO-35, but qualified only to JANTXV level (not JANS); lower radiation tolerance | Lacks full Class S space qualification; suitable for ground-test or non-flight subsystems | Select when full JANS documentation and radiation testing are not required |
| 1N4118US-1 | Same electrical specs, but in surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; incompatible with through-hole mounting | Select only if board layout supports SMT and JANS-level reliability is not mandatory |
Compared with JANTXV1N4118-1 and 1N4118US-1, the JANS1N4118-1/TR provides the highest assurance of performance stability under radiation, thermal shock, and long-term storage - essential for flight-critical voltage references where replacement is impossible post-deployment.
Availability
JANS1N4118-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage monitor, and nuclear instrumentation bias applications requiring stable component supply with full JANS traceability and radiation-hardness validation.
Supply support for JANS1N4118-1/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, radiation-hardened, and aerospace-grade components.
The JANS1N4118-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 qualified Zener diode family, engineered specifically for voltage regulation in mission-critical defense, space, and nuclear systems where failure is not an option.
FAQ
What is the Zener voltage and tolerance of JANS1N4118-1/TR?
The JANS1N4118-1/TR has a nominal Zener voltage of 27.0 V with a tight ±1% tolerance, measured at 250 mA test current and 25 °C ambient. This precision enables use in high-accuracy reference circuits where voltage drift must remain within strict limits across temperature and time.
Is JANS1N4118-1/TR qualified to JANS level per MIL-PRF-19500/435?
Yes, JANS1N4118-1/TR is fully qualified to JANS level per MIL-PRF-19500/435, including extended environmental testing, lot traceability, radiation hardness verification, and screening for spaceflight use. Documentation includes certified test reports and conformance certificates for each production lot.
What is the maximum reverse leakage current for JANS1N4118-1/TR?
The JANS1N4118-1/TR specifies a maximum reverse leakage current (IR) of 0.01 µA at 20.5 V, ensuring minimal loading on high-impedance circuits such as precision voltage monitors and radiation detector bias networks where even nanoamp-level errors degrade accuracy.
Does JANS1N4118-1/TR have radiation hardness certification?
Yes, JANS1N4118-1/TR is inherently radiation hard per Microsemi MicroNote 050, with validated performance up to ≥100 krad(Si) total ionizing dose. This makes it suitable for satellite power systems, nuclear instrumentation, and other high-radiation environments where parametric stability is mandatory.
What package type does JANS1N4118-1/TR use and how is polarity marked?
JANS1N4118-1/TR uses the hermetically sealed DO-35 (DO-204AH) axial-leaded glass package. Polarity is marked by a distinct black cathode band; the banded end is the cathode and must be held positive relative to the anode for proper Zener regulation operation.
JANS1N4118-1/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:
- ±5%
- 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)
JANS1N4118-1/TR FAQ
1.How can I place an order for JANS1N4118-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4118-1/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 JANS1N4118-1/TR reliable?
The price and inventory of JANS1N4118-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4118-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4118-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4118-1/TR transactions.
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4.How is shipping managed for JANS1N4118-1/TR?
JANS1N4118-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4118-1/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 JANS1N4118-1/TR?
For technical support, including JANS1N4118-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4118-1/TR requirements.
6.How does Aetrix verify that JANS1N4118-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4118-1/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 JANS1N4118-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4118-1/TR?
All JANS1N4118-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4118-1/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 JANS1N4118-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4118-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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