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Microchip Technology JAN1N4118-1
- Part No.:
- JAN1N4118-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JAN1N4118-1.pdf
- Description:
- DIODE ZENER 27V DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
JAN1N4118-1 from Microsemi is a 500 mW, 27.0 V ±5% 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 military and aerospace power supplies.
For engineers reviewing the JAN1N4118-1 datasheet, JAN1N4118-1 pinout, JAN1N4118-1 application, or JAN1N4118-1 equivalent, this part delivers stable 27 V regulation at 250 mA test current with 150 Ω dynamic impedance, low 0.01 µA reverse leakage at 20.5 V, and radiation-hardened performance suitable for harsh-environment analog reference and overvoltage protection circuits.
Technical Context
This Zener diode operates in reverse breakdown mode with cathode-banded polarity, requiring the banded end to be held positive relative to the anode for regulation. Its metallurgical bond construction ensures mechanical robustness and thermal stability across -65 °C to +175 °C junction temperature range.
It exhibits a +0.090 %/°C temperature coefficient and 1 µV/√Hz noise density at 27 V, enabling precision reference use where low drift and minimal broadband noise are critical-especially in analog signal conditioning and regulated bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±5% at 250 mA - defines precise regulation point for feedback loops and reference generation |
| Power Dissipation | 500 mW @ 25 °C - supports continuous regulation in compact through-hole designs without forced cooling |
| Dynamic Impedance ZZT | 150 Ω @ 250 mA - determines output voltage variation under load transients; lower values improve regulation accuracy |
| Reverse Leakage IR | 0.01 µA @ 20.5 V - ensures minimal error current in high-impedance reference paths |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies voltage drift with temperature; enables predictable compensation in wide-temp systems |
| Noise Density ND | 1 µV/√Hz @ 27 V - specifies low-frequency noise floor critical for precision analog references |
| Junction Temp Range | -65 °C to +175 °C - qualifies for operation in extreme environments including space and avionics |
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 (unbanded end) | Current sink during Zener conduction | Connected to system ground or lower-potential node; carries full Zener current in regulation mode |
| Cathode (banded end) | Regulated voltage output node | Provides stable 27 V reference; must be biased positive relative to anode to enter breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Enhances thermal cycling endurance and long-term parameter stability in mission-critical systems |
| MIL-PRF-19500/435 JAN qualification | Guarantees screening, testing, and traceability for defense and aerospace applications |
| Low 1 µV/√Hz noise density | Minimizes voltage reference uncertainty in high-resolution ADC/DAC biasing and sensor excitation |
| Hermetic glass DO-35 package | Prevents moisture ingress and parameter shift over decades of field operation |
| Radiation hardness per MicroNote 050 | Enables use in low-earth orbit and nuclear instrumentation without derating or shielding |
Applications
| Avionics Power Monitoring | Satellite Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for analog-to-digital converters monitoring aircraft bus voltage. IC Role / Device Role / Timing Role: Zener diode providing stable 27 V reference for ADC input scaling and fault detection thresholds. Use Value: Maintains ±0.1% reference accuracy across -55 °C to +125 °C ambient due to +0.090 %/°C TC and hermetic sealing. | Use Scenario: Supplying bias voltage to radiation-tolerant photodiode amplifiers in Earth observation payloads. IC Role / Device Role / Timing Role: Precision voltage reference source for op-amp gain-setting networks in low-noise front-end stages. Use Value: Delivers 1 µV/√Hz noise floor and inherent TID tolerance, eliminating need for additional shielding or redundancy. |
| Nuclear Instrumentation | Tactical Radio RF Stage Bias |
Use Scenario: Setting operating point for Geiger-Müller tube high-voltage regulators in portable radiation detectors. IC Role / Device Role / Timing Role: Stable Zener element in feedback path of HV DC-DC converter controlling tube bias voltage. Use Value: Survives >100 krad(Si) total ionizing dose without parameter shift, validated per MicroNote 050. | Use Scenario: Providing regulated gate bias for GaN FETs in S-band power amplifier modules. IC Role / Device Role / Timing Role: Low-noise 27 V reference for current-sense amplifier offset calibration and thermal compensation networks. Use Value: Enables <10 ppm/°C gain drift over military temperature range using its predictable +0.090 %/°C TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4118US | Same 27 V Zener voltage and DO-35 package but commercial-grade (non-mil-qualified); no JAN screening or radiation data | Lacks MIL-PRF-19500/435 qualification; unsuitable for flight or safety-critical systems | Select when cost-sensitive industrial designs require identical electrical specs without reliability certification |
| JANTXV1N4118 | Identical 27 V rating and DO-35 package; higher screening level (JANTXV) with extended temp testing and lot traceability | Supports wider temperature validation (-65 °C to +175 °C) and enhanced burn-in; required for Class H avionics | Select when program mandates JANTXV-level reliability, extended life testing, or full DSCC traceability |
Compared with JAN1N4118-1, 1N4118US offers identical regulation performance at lower cost but no military qualification, while JANTXV1N4118 provides stricter screening and broader environmental validation-making it preferable for Class H or space-qualified hardware where failure modes demand zero tolerance.
Availability
JAN1N4118-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, and nuclear instrumentation requiring stable component supply with full MIL-PRF-19500/435 traceability and long-term obsolescence management.
Supply support for JAN1N4118-1 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) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets.
The JAN1N4118-1 belongs to Microsemi's legacy 1N4099–1N4135 series of mil-qualified Zener diodes, designed specifically for voltage reference and regulation in mission-critical systems where radiation tolerance, thermal stability, and long-term parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance for JAN1N4118-1?
JAN1N4118-1 has a nominal Zener voltage of 27.0 V with a standard tolerance of ±5%, as defined in the JEDEC-registered specification and confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This tolerance applies under standard test conditions of 25 °C and 250 mA Zener test current.
Is JAN1N4118-1 RoHS compliant?
No, JAN1N4118-1 is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix denotes RoHS compliance-and JAN1N4118-1 lacks that suffix. RoHS-compliant versions are only available for commercial-grade variants (e.g., 1N4118-1e3), not JAN-level parts.
What is the maximum reverse leakage current for JAN1N4118-1?
The maximum reverse leakage current (IR) for JAN1N4118-1 is 0.01 µA at 20.5 V, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value is measured at 25 °C and reflects the diode's tight leakage control essential for high-impedance reference applications.
Does JAN1N4118-1 have radiation hardness documentation?
Yes, JAN1N4118-1 is inherently radiation hard as described in Microsemi MicroNote 050, cited in the Applications/Benefits section on page 1 of T4-LDS-0245-2 Rev. 1. The metallurgically bonded DO-35 construction contributes to its tolerance of total ionizing dose (TID) without parameter degradation.
What is the thermal resistance junction-to-lead for JAN1N4118-1?
The thermal resistance junction-to-lead (RθJL) for JAN1N4118-1 is 250 °C/W, measured with 3/8 inch (10 mm) lead length from the body, as stated in the Maximum Ratings table on page 1 of T4-LDS-0245-2 Rev. 1. This value supports thermal design calculations for lead-mounted dissipation in high-reliability assemblies.
JAN1N4118-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 27 V
- Tolerance:
- ±5%
- 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)
JAN1N4118-1 FAQ
1.How can I place an order for JAN1N4118-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JAN1N4118-1 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 JAN1N4118-1 reliable?
The price and inventory of JAN1N4118-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4118-1 is usually 5 days.
3.What payment methods are accepted for JAN1N4118-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4118-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JAN1N4118-1?
JAN1N4118-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JAN1N4118-1 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 JAN1N4118-1?
For technical support, including JAN1N4118-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4118-1 requirements.
6.How does Aetrix verify that JAN1N4118-1 is sourced from the original manufacturer or authorized distributors?
All JAN1N4118-1 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 JAN1N4118-1 meets industry standards.
7.What is the process for return or replacement of JAN1N4118-1?
All JAN1N4118-1 units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4118-1, 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 JAN1N4118-1 part is unused and in its original packaging.
Return procedure for JAN1N4118-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JAN1N4118-1 Tags
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