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Microchip Technology JANTX1N4118D-1
- Part No.:
- JANTX1N4118D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4118D-1.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
JANTX1N4118D-1 from Microsemi is a 500 mW, 27.0 V ±1% tolerance metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4118D-1 datasheet, JANTX1N4118D-1 pinout, JANTX1N4118D-1 application, or JANTX1N4118D-1 equivalent, key selection criteria include Zener voltage accuracy (±1%), low noise density (1 µV/√Hz), radiation hardness, hermetic glass sealing, and thermal resistance (250 °C/W junction-to-lead).
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 27.0 V at 250 mA test current, dynamic impedance of 150 Ω at IZT, and temperature coefficient of +0.090 %/°C. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation in the reverse-biased breakdown region, it delivers regulated voltage across wide current ranges (IZK to IZM = 20.5 mA to 40 mA) while maintaining low capacitance (typ. <2 pF) and minimal leakage (IR ≤ 0.01 µA at VR = 21.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±1% at 250 mA - enables precise reference generation in analog circuits requiring tight voltage stability. |
| Power Dissipation | 500 mW at 25 °C - supports continuous regulation in compact, unheatsinked designs with linear derating above 50 °C. |
| Zener Impedance ZZT | 150 Ω at 250 mA - ensures minimal output voltage variation under load transients in feedback loops. |
| Noise Density ND | 1 µV/√Hz - critical for low-noise references in precision instrumentation and ADC/DAC biasing. |
| Reverse Leakage IR | ≤ 0.01 µA at 21.3 V - guarantees negligible current draw in standby or high-impedance sensing nodes. |
| Temp Coefficient αVZ | +0.090 %/°C - allows predictable drift compensation in temperature-varying environments like avionics bays. |
| Junction Temp Range | –65 to +175 °C - validated for extended operation in harsh military and space-grade thermal profiles. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded glass package with hermetically sealed body, tin-lead plating, cathode band marking, and approximate weight of 0.2 g. Leads are 1.0–1.5 inch long (25.4–38.1 mm), body diameter 0.056–0.090 inch (1.42–2.29 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or common return; establishes reference potential for Zener regulation. |
| Cathode | Regulated output node | Banded end; supplies stable 27.0 V when reverse-biased; must be held positive relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for flight-critical systems including burn-in, life testing, and lot traceability per military standards. |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration, ensuring long-term parameter stability. |
| Hermetic glass encapsulation | Prevents moisture ingress and corrosion in humid, saline, or high-altitude environments without conformal coating. |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050-no derating required for low-earth orbit missions. |
| Low capacitance | Typical <2 pF (per Figure 3) - preserves high-frequency signal integrity in RF bias networks and fast-switching regulators. |
Applications
| Avionics Power Reference | Satellite DC-DC Converter Feedback |
|---|---|
Use Scenario: Providing stable 27.0 V reference for analog-to-digital converters in inertial measurement units (IMUs). IC Role / Device Role / Timing Role: Shunt voltage reference establishing precision scaling for sensor signal conditioning circuitry. Use Value: ±1% tolerance and +0.090 %/°C TC ensure <0.3% full-scale error over –55 to +125 °C operational range. | Use Scenario: Biasing error amplifier inputs in radiation-hardened isolated DC-DC converters on LEO satellites. IC Role / Device Role / Timing Role: Precision Zener reference in optocoupler feedback loop regulating 28 V bus output. Use Value: Hermetic DO-35 package and inherent radiation hardness eliminate need for shielding or redundancy overhead. |
| Ground-Based Radar Bias Supply | Tactical Radio Transceiver Regulator |
Use Scenario: Generating clean 27.0 V supply for GaN RF power amplifier gate bias in S-band radar front-ends. IC Role / Device Role / Timing Role: Low-noise shunt regulator filtering switching noise from primary 30 V DC supply rail. Use Value: 1 µV/√Hz noise density prevents phase noise degradation in local oscillator synthesis paths. | Use Scenario: Stabilizing 27.0 V supply for RF front-end LNAs and mixers in handheld military radios operating in extreme temperature cycles. IC Role / Device Role / Timing Role: Temperature-stable voltage clamp protecting sensitive analog components during battery voltage sag or surge events. Use Value: –65 to +175 °C junction rating and JANTX screening enable uninterrupted operation across desert to arctic deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4118US-1 | Same 27.0 V ±1%, but in DO-213AA surface-mount package; RθJA = 400 °C/W vs. 300 °C/W for DO-35. | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or high-vibration mechanical retention. | Select when board space is constrained and thermal management via copper pour is feasible. |
| JAN1N4118D-1 | Identical electrical specs and DO-35 package, but qualified only to JAN level (less stringent screening than JANTX). | Lacks JANTX-level lot acceptance tests (LAT), burn-in, and failure analysis reporting required for Class B/C space programs. | Select for cost-sensitive ground-based military systems where full JANTX screening is not mandated. |
Compared with JANTX1N4118D-1, the 1N4118US-1 trades axial-mount robustness and lower thermal resistance for SMT compatibility, while JAN1N4118D-1 reduces qualification rigor and lifecycle traceability to meet less demanding reliability tiers.
Availability
JANTX1N4118D-1 is available at Aetrix Electronics and suitable for avionics power reference, satellite DC-DC converter feedback, and ground-based radar bias supply requiring stable component supply with full MIL-spec traceability and lot-level documentation.
Supply support for JANTX1N4118D-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 ICs, discrete devices, and radiation-hardened components for aerospace, defense, and industrial markets.
The JANTX1N4118D-1 belongs to Microsemi's legacy 1N4099–1N4135 family of mil-qualified Zener diodes, engineered specifically for precision voltage regulation in mission-critical systems where parameter stability, hermeticity, and radiation tolerance are non-negotiable.
FAQ
What is the Zener voltage tolerance and test current for JANTX1N4118D-1?
JANTX1N4118D-1 has a nominal Zener voltage of 27.0 V with ±1% tolerance, measured at a Zener test current (IZT) of 250 mA. This tight tolerance ensures accurate voltage referencing in high-precision analog circuits where deviations beyond ±0.27 V are unacceptable. The device maintains this specification under thermal equilibrium at 25 °C ambient.
Is JANTX1N4118D-1 suitable for radiation-exposed environments such as low-earth orbit?
Yes, JANTX1N4118D-1 is inherently radiation-hardened per Microsemi MicroNote 050 and qualified to MIL-PRF-19500/435 JANTX level, making it suitable for low-earth orbit applications without additional shielding or derating. Its metallurgically bonded structure and hermetic glass package prevent parametric shift under total ionizing dose exposure typical in LEO missions.
What is the maximum reverse leakage current for JANTX1N4118D-1 at its rated voltage?
JANTX1N4118D-1 exhibits a maximum reverse leakage current (IR) of 0.01 µA at VR = 21.3 V, well below typical thresholds for high-impedance bias networks. This ultra-low leakage preserves signal integrity in precision sensor interfaces and minimizes standby power loss in battery-backed systems using JANTX1N4118D-1 as a reference clamp.
How does the thermal resistance of JANTX1N4118D-1 affect its power handling capability?
JANTX1N4118D-1 has a junction-to-lead thermal resistance (RθJL) of 250 °C/W at 3/8-inch lead length. When mounted with standard PCB copper pads, this allows full 500 mW dissipation up to 50 °C lead temperature before linear derating begins, reaching zero at 175 °C. Proper lead length and copper area are essential to maintain JANTX1N4118D-1 within safe operating limits.
Can JANTX1N4118D-1 be used as a direct replacement for commercial-grade 1N4118D-1 in existing designs?
JANTX1N4118D-1 shares identical electrical parameters and DO-35 mechanical form factor with commercial 1N4118D-1, but adds JANTX-level screening, lot traceability, and extended temperature validation. It can be substituted directly in existing designs where enhanced reliability, radiation tolerance, or military qualification is required-no PCB changes needed.
JANTX1N4118D-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:
- 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)
JANTX1N4118D-1 FAQ
1.How can I place an order for JANTX1N4118D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4118D-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 JANTX1N4118D-1 reliable?
The price and inventory of JANTX1N4118D-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4118D-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4118D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4118D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4118D-1?
JANTX1N4118D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4118D-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 JANTX1N4118D-1?
For technical support, including JANTX1N4118D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4118D-1 requirements.
6.How does Aetrix verify that JANTX1N4118D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4118D-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 JANTX1N4118D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4118D-1?
All JANTX1N4118D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4118D-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 JANTX1N4118D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4118D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4118D-1 Tags
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