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Microchip Technology JAN1N4118D-1
- Part No.:
- JAN1N4118D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4118D-1.pdf
- Description:
- DIODE ZENER 27V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,763
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Product details
Overview
JAN1N4118D-1 from Microsemi is a 500 mW, 27.0 V, 1% tolerance metallurgically bonded glass Zener diode in DO-35 package, qualified to JANS level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JAN1N4118D-1 datasheet, JAN1N4118D-1 pinout, JAN1N4118D-1 application, or JAN1N4118D-1 equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification details critical for radiation-hardened, low-noise, precision reference design.
Technical Context
This Zener diode operates in reverse breakdown with cathode-banded polarity, delivering stable 27.0 V regulation at 250 mA test current (IZT). Its metallurgical bond ensures low thermal resistance (RθJL = 250 °C/W) and inherent radiation hardness per MicroNote 050.
It exhibits a +0.090 %/°C temperature coefficient, 150 Ω dynamic impedance (ZZT) at IZT, and 1 µV/√Hz noise density - optimized for low-drift references where stability across -65 to +175 °C junction temperature is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±1% at 250 mA - enables precise voltage clamping or reference generation with tight initial tolerance. |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - supports robust operation in high-temp environments with defined thermal margin. |
| Dynamic Impedance ZZT | 150 Ω at 250 mA - ensures minimal output voltage variation under load current changes in regulation circuits. |
| Noise Density ND | 1 µV/√Hz - provides ultra-low noise performance essential for precision analog references and metrology-grade systems. |
| Temp. Coefficient αVZ | +0.090 %/°C - guarantees predictable, monotonic voltage drift over wide temperature range for compensated designs. |
| Max Reverse Current IR | 0.01 µA at 20.5 V - ensures negligible leakage in high-impedance bias networks and standby modes. |
| Junction Temp Range | -65 to +175 °C - validated for extreme-environment use in space, avionics, and nuclear instrumentation. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package; cathode indicated by band; tin-lead or RoHS-compliant matte-tin plating; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded lead | Connected to circuit ground or lower potential node during Zener operation. |
| Cathode | Banded lead | Connected to regulated output or higher potential node; must be biased positive relative to anode for breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enables intrinsic radiation hardness and long-term parameter stability under neutron/gamma exposure. |
| JANS-level qualification | Fully screened per MIL-PRF-19500/435 for spaceflight and mission-critical defense electronics. |
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in high-accuracy reference circuits. |
| Low capacitance (typ. <1.5 pF) | Minimizes high-frequency coupling and signal distortion in RF bias and timing applications. |
| ESD immunity (MIL-STD-750 Method 1020) | Eliminates handling precautions during assembly of sensitive avionics and satellite subsystems. |
Applications
| Avionics Power Reference | Satellite Voltage Monitor |
|---|---|
Use Scenario: Stable 27 V reference for ADC biasing and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Precision Zener reference diode providing primary voltage基准 for analog front-end calibration. Use Value: ±1% tolerance and +0.090 %/°C TC ensure <±0.5% total error over -55 to +125 °C operating range without external compensation. | Use Scenario: Overvoltage protection and telemetry reference in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Radiation-hardened Zener clamp regulating bus monitor thresholds against single-event effects. Use Value: Inherent radiation hardness and JANS screening eliminate need for shielding or redundancy in 10 krad(Si) TID environments. |
| Nuclear Instrumentation Bias | Strategic Missile Guidance Regulator |
Use Scenario: High-stability bias supply for gamma spectrometer PMT gain control in reactor monitoring systems. IC Role / Device Role / Timing Role: Low-noise (1 µV/√Hz) Zener reference establishing gain-setting voltage for logarithmic amplifiers. Use Value: Ultra-low noise prevents signal-to-noise degradation in sub-mV pulse height analysis. | Use Scenario: Primary voltage regulator in inertial measurement unit (IMU) power conditioning modules. IC Role / Device Role / Timing Role: MIL-qualified Zener diode maintaining 27 V rail integrity during high-G launch transients and thermal cycling. Use Value: 500 mW rating with 250 °C/W RθJL allows direct mounting to chassis for passive thermal management without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| JAN1N4118C-1 | Same 27.0 V nominal, but ±2% tolerance instead of ±1%. | Acceptable where tighter initial accuracy is not required; lower cost. | Select when system-level calibration compensates for wider tolerance band. |
| MIL-PRF-19500/435 1N4118US | Same electrical specs, but in surface-mount DO-213AA package (no axial leads). | Required for automated SMT assembly; lacks axial mounting flexibility. | Select when board space constraints or reflow-only production mandate SMT form factor. |
Compared with JAN1N4118D-1, the C-grade offers relaxed tolerance at lower cost for non-critical references, while the US variant trades axial-mount versatility for SMT compatibility - neither provides identical 1% tolerance and DO-35 mechanical interface in a single package.
Availability
JAN1N4118D-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite voltage monitor, and nuclear instrumentation bias requiring stable component supply with full traceability and extended lifecycle support.
Supply support for JAN1N4118D-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 JAN1N4118D-1 belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode family, engineered specifically for radiation-hardened, low-noise, high-stability voltage regulation in mission-critical systems.
FAQ
What is the Zener voltage and tolerance of JAN1N4118D-1?
JAN1N4118D-1 has a nominal Zener voltage of 27.0 V with a ±1% tolerance, measured at 250 mA test current (IZT) and 25 °C ambient. This tight tolerance eliminates post-production trimming in high-accuracy reference designs and is confirmed in Microsemi's T4-LDS-0245-2 datasheet, Page 3.
Is JAN1N4118D-1 qualified for space or radiation environments?
Yes, JAN1N4118D-1 is qualified to JANS level per MIL-PRF-19500/435 and exhibits inherent radiation hardness as documented in Microsemi MicroNote 050. Its metallurgically bonded construction ensures stable parametric performance under neutron and gamma irradiation, making it suitable for LEO satellite and nuclear instrumentation use.
What is the maximum power dissipation and thermal derating behavior of JAN1N4118D-1?
JAN1N4118D-1 has a rated average power dissipation of 500 mW at 25 °C, linearly derated to zero at 175 °C junction temperature. Derating begins at 50 °C lead temperature, with RθJL = 250 °C/W enabling effective passive cooling when mounted with 3/8″ lead length - data sourced from T4-LDS-0245-2, Page 1.
Does JAN1N4118D-1 have low noise characteristics suitable for precision references?
Yes, JAN1N4118D-1 delivers 1 µV/√Hz noise density at 250 mA, verified per Figure 1 test circuit in T4-LDS-0245-2. This ultra-low noise supports high-resolution analog systems such as gamma spectrometry front-ends and metrology-grade voltage references where signal integrity is paramount.
What package type and polarity marking does JAN1N4118D-1 use?
JAN1N4118D-1 uses the hermetically sealed axial-leaded DO-35 (DO-204AH) glass package. Polarity is marked with a cathode band on the banded end, which must be biased positive relative to the anode (non-banded end) for Zener regulation - specified in the Mechanical and Packaging section of T4-LDS-0245-2, Page 2.
JAN1N4118D-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:
- ±1%
- Power - Max:
- -
- 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)
JAN1N4118D-1 FAQ
1.How can I place an order for JAN1N4118D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4118D-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 JAN1N4118D-1 reliable?
The price and inventory of JAN1N4118D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4118D-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4118D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4118D-1 transactions.
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4.How is shipping managed for JAN1N4118D-1?
JAN1N4118D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4118D-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 JAN1N4118D-1?
For technical support, including JAN1N4118D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4118D-1 requirements.
6.How does Aetrix verify that JAN1N4118D-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4118D-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 JAN1N4118D-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4118D-1?
All JAN1N4118D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4118D-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 JAN1N4118D-1 part is unused and in its original packaging.
Return procedure for JAN1N4118D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4118D-1 Tags
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