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Microchip Technology JANTX1N4118C-1/TR
- Part No.:
- JANTX1N4118C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4118C-1/TR.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,551
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Product details
Overview
JANTX1N4118C-1/TR from Microsemi is a 27 V, ±2% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level for high-reliability voltage regulation in aerospace power conditioning and precision reference circuits.
For engineers reviewing the JANTX1N4118C-1/TR datasheet, JANTX1N4118C-1/TR pinout, JANTX1N4118C-1/TR application, or JANTX1N4118C-1/TR equivalent, this page delivers verified Zener voltage, temperature coefficient, dynamic impedance, noise density, and military qualification status required for radiation-hardened analog design and legacy system sustainment.
Technical Context
This device operates as a two-terminal shunt voltage regulator with cathode-banded polarity, designed for stable reverse-bias breakdown across wide current (250 mA test point) and temperature (–65 °C to +175 °C) ranges. Its internal metallurgical bond ensures low thermal resistance (RθJL = 250 °C/W) and minimal capacitance per Figure 3.
It exhibits a positive temperature coefficient of +0.090 %/°C and maximum noise density of 1 μV/√Hz at 27 V, supporting low-noise reference applications where stability under thermal stress and ESD immunity (MIL-STD-750 Method 1020) are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±2% at IZT = 250 mA - precise regulation point for mid-range analog references. |
| Power Dissipation | 500 mW at TL = 25 °C, linearly derated to zero at 175 °C - defines safe operating area in conduction-limited designs. |
| Dynamic Impedance ZZT | 150 Ω max at IZT = 250 mA - determines output voltage variation under load current changes. |
| Temperature Coefficient αVZ | +0.090 %/°C - quantifies drift direction and magnitude for thermal compensation planning. |
| Noise Density ND | 1 μV/√Hz - enables low-phase-noise oscillator biasing and precision ADC reference buffering. |
| Reverse Leakage IR | 0.01 μA max at VR = 20.5 V - ensures minimal quiescent current in high-impedance bias networks. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; must be held at lower potential than cathode for Zener operation. |
| Cathode | Regulated output node | Banded end; supplies stable 27 V when reverse-biased above breakdown threshold. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense systems requiring extended lifetime and radiation hardness. |
| Metallurgical bond construction | Enables RθJL = 250 °C/W and stable long-term Zener voltage drift under thermal cycling. |
| 1 μV/√Hz noise density | Supports ultra-low-noise voltage references in PLLs, DAC buffers, and sensor signal chains. |
| ±2% Zener tolerance (C suffix) | Reduces calibration overhead in production test vs. standard ±5% commercial variants. |
Applications
| Aerospace Power Conditioning | Precision Instrumentation Reference |
|---|---|
Use Scenario: Regulating auxiliary rail in satellite power management units exposed to thermal vacuum and radiation. IC Role / Device Role / Timing Role: Shunt voltage regulator providing stable 27 V reference for DC-DC controller feedback loops. Use Value: JANTX qualification and +0.090 %/°C TC enable predictable performance across –65 °C to +125 °C operational envelope. | Use Scenario: Biasing high-resolution 24-bit ADC front-end in portable metrology equipment. IC Role / Device Role / Timing Role: Low-noise Zener reference source replacing higher-drift bandgap ICs in battery-powered calibrators. Use Value: 1 μV/√Hz noise density and ±2% tolerance reduce system-level gain error and post-calibration drift. |
| Legacy Avionics Sustainment | Radiation-Hardened Sensor Interface |
Use Scenario: Replacing obsolete 27 V Zeners in FAA-certified flight control computers during component obsolescence refresh. IC Role / Device Role / Timing Role: Drop-in replacement for MIL-qualified 27 V regulation in analog signal conditioning modules. Use Value: Identical DO-35 footprint and JANTX reliability level ensure no requalification burden or layout change. | Use Scenario: Providing stable bias for radiation-tolerant photodiode amplifiers in nuclear reactor monitoring systems. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining reference integrity under total ionizing dose exposure. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in high-dose environments. |
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/TR | Same 27 V ±2% Zener voltage but in DO-213AA surface-mount package; no axial leads. | Requires PCB redesign for SMT assembly; unsuitable for through-hole legacy boards. | Select when automated assembly and board space reduction outweigh lead-forming requirements. |
| JAN1N4118C-1/TR | Identical electrical specs and DO-35 package, but qualified only to JAN level (lower screening than JANTX). | Approved for less demanding military programs; not accepted in JANTX-mandated contracts. | Select only if procurement specification permits JAN-level qualification and cost sensitivity overrides reliability tier. |
Compared with JANTX1N4118C-1/TR, the 1N4118US-1/TR offers identical regulation performance in a space-constrained SMT form factor, while the JAN1N4118C-1/TR provides cost savings at the expense of reduced environmental screening-neither is pin-compatible without mechanical or qualification review.
Availability
JANTX1N4118C-1/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, precision instrumentation reference, and legacy avionics sustainment requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for JANTX1N4118C-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 1N4099–1N4135 series was developed to meet MIL-PRF-19500/435 requirements for ruggedized, low-noise Zener regulation in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance of JANTX1N4118C-1/TR?
JANTX1N4118C-1/TR has a nominal Zener voltage of 27.0 V with ±2% tolerance, as indicated by the "C" suffix in its part number per Microsemi's nomenclature guide. This tighter tolerance reduces calibration effort compared to standard ±5% variants and is verified at IZT = 250 mA and 25 °C ambient. The JANTX1N4118C-1/TR maintains this tolerance across its qualified operating temperature range.
Is JANTX1N4118C-1/TR RoHS compliant?
No, JANTX1N4118C-1/TR is not RoHS compliant. Per the datasheet, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade parts, not for JANTX-qualified devices. The JANTX1N4118C-1/TR uses traditional tin-lead plating to meet MIL-STD-750 solderability requirements and maintain compatibility with legacy aerospace assembly processes.
What is the maximum reverse leakage current for JANTX1N4118C-1/TR?
The maximum reverse leakage current (IR) for JANTX1N4118C-1/TR is 0.01 µA at VR = 20.5 V, as specified in the Electrical Characteristics table on page 3 of the T4-LDS-0245-2 datasheet. This ultra-low leakage supports high-impedance bias networks and minimizes power loss in battery-backed systems where JANTX1N4118C-1/TR serves as a reference node.
Does JANTX1N4118C-1/TR require heatsinking in typical applications?
JANTX1N4118C-1/TR does not require external heatsinking in most applications due to its 500 mW rating and RθJL = 250 °C/W thermal resistance when mounted with 3/8″ lead length. However, power must be linearly derated above 50 °C lead temperature, reaching zero dissipation at 175 °C. For continuous 500 mW operation, JANTX1N4118C-1/TR relies on adequate PCB copper area and ambient airflow rather than discrete heatsinks.
How is polarity marked on JANTX1N4118C-1/TR?
JANTX1N4118C-1/TR uses a cathode band marking on the glass body to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode for proper Zener regulation. This marking aligns with JEDEC DO-35 standards and is visible under standard visual inspection. During circuit operation, JANTX1N4118C-1/TR conducts in reverse bias, with current flowing into the banded cathode terminal.
JANTX1N4118C-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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4118C-1/TR FAQ
1.How can I place an order for JANTX1N4118C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4118C-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 JANTX1N4118C-1/TR reliable?
The price and inventory of JANTX1N4118C-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 JANTX1N4118C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4118C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4118C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4118C-1/TR?
JANTX1N4118C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4118C-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 JANTX1N4118C-1/TR?
For technical support, including JANTX1N4118C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4118C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4118C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4118C-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 JANTX1N4118C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4118C-1/TR?
All JANTX1N4118C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4118C-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 JANTX1N4118C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4118C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4118C-1/TR Tags
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