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Microchip Technology JANTX1N4118-1/TR
- Part No.:
- JANTX1N4118-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4118-1/TR.pdf
- Description:
- DIODE ZENER 27V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,263
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Product details
Overview
JANTX1N4118-1/TR from Microsemi is a 500 mW, 27.0 V ±5% 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. It delivers 20.5 mA maximum Zener current at 27 V with 150 Ω dynamic impedance and +0.090 %/°C temperature coefficient.
For engineers reviewing the JANTX1N4118-1/TR datasheet, JANTX1N4118-1/TR pinout, JANTX1N4118-1/TR application, or JANTX1N4118-1/TR equivalent, key selection factors include its military-grade reliability qualification, low noise density (1 µV/√Hz), hermetic glass packaging, and precise 27 V regulation under variable load and temperature conditions.
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 stable junction characteristics across -65 °C to +175 °C operating range and supports radiation-hardened performance per Microsemi MicroNote 050.
It exhibits minimal capacitance (typical <2 pF at 27 V), low leakage (<0.01 µA at 20.5 V), and thermal resistance of 250 °C/W junction-to-lead - enabling stable regulation in high-temp aerospace and defense power supply rails without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 27.0 V ±5% at 250 mA test current - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - sets maximum continuous thermal load in lead-mounted configuration |
| Dynamic Impedance ZZT | 150 Ω at 250 mA - determines output voltage variation under changing load current |
| Noise Density | 1 µV/√Hz - enables low-noise analog references in precision instrumentation and ADC biasing |
| Temp Coefficient αVZ | +0.090 %/°C - quantifies voltage drift over temperature; positive slope aids thermal compensation design |
| Max Reverse Current IR | 0.01 µA at 20.5 V - ensures negligible leakage below regulation threshold, critical for standby power integrity |
| Junction Temp Range | -65 °C to +175 °C - supports operation in extreme environments including space-grade and engine bay applications |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with tin-lead plating; cathode indicated by single black band; weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential rail; establishes reference node for shunt regulation |
| Cathode | Zener regulation terminal / input to regulated node | Banded end; connected to unregulated supply; sinks current to maintain 27 V at load |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense systems requiring traceable lot control and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Hermetic glass encapsulation | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Low noise density (1 µV/√Hz) | Enables use in high-resolution sensor excitation and reference buffers without added filtering |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID), supporting satellite and nuclear instrumentation use |
Applications
| Avionics Power Reference | Spacecraft Voltage Monitor |
|---|---|
Use Scenario: Stable 27 V reference for analog-to-digital converters in flight control computers. IC Role / Device Role / Timing Role: Shunt Zener regulator providing precision voltage reference for ADC bias and sensor excitation circuits. Use Value: Maintains ±0.5% regulation over -55 °C to +125 °C with <1 µV/√Hz noise, ensuring 16-bit measurement accuracy. | Use Scenario: Onboard telemetry voltage supervisor in LEO satellite power management units. IC Role / Device Role / Timing Role: High-reliability Zener clamp protecting monitoring ICs from bus overvoltage events. Use Value: JANTX qualification and radiation hardness ensure functional integrity after 100 krad(Si) TID exposure. |
| Military Radio Bias Supply | Nuclear Instrumentation Reference |
Use Scenario: Local 27 V bias generation for RF power amplifier stages in handheld tactical radios. IC Role / Device Role / Timing Role: Low-impedance shunt regulator stabilizing PA drain voltage under pulsed RF load transients. Use Value: 150 Ω dynamic impedance and 500 mW rating suppress voltage sag during 100 mA peak current pulses. | Use Scenario: Precision reference in gamma spectrometer front-end amplifiers requiring ultra-low noise. IC Role / Device Role / Timing Role: Low-noise Zener source for op-amp feedback networks in charge-sensitive preamplifiers. Use Value: 1 µV/√Hz noise density prevents degradation of energy resolution in sub-keV spectral analysis. |
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 V Zener voltage and JANTX qualification, but in surface-mount DO-213AA package | Requires SMT reflow process; no axial through-hole mounting option | Select when board space constraints mandate surface-mount integration without lead-forming |
| JAN1N4118-1 | Identical electrical specs and DO-35 package, but qualified only to JAN (not JANTX) reliability level | Lacks extended screening per MIL-PRF-19500/435 Table IV; not approved for mission-critical flight hardware | Select for cost-sensitive ground-test or non-flight prototypes where full JANTX screening is unnecessary |
Compared with JANTX1N4118-1/TR, the 1N4118US-1 offers identical regulation performance in a compact SMT form factor, while JAN1N4118-1 provides baseline military reliability at lower cost - making JANTX1N4118-1/TR the optimal choice for flight-certified systems demanding proven screening and hermetic robustness.
Availability
JANTX1N4118-1/TR is available at Aetrix Electronics and suitable for avionics power reference, spacecraft voltage monitor, and military radio bias supply applications requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N4118-1/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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTX1N4118-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in harsh-environment electronic systems where long-term parametric stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4118-1/TR?
JANTX1N4118-1/TR 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 Microsemi T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current.
Is JANTX1N4118-1/TR RoHS compliant?
No, JANTX1N4118-1/TR is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix denotes RoHS compliance, which is available only on commercial-grade versions - JANTX-level parts retain tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS restrictions.
What is the maximum Zener current for JANTX1N4118-1/TR?
The maximum Zener current IZM for JANTX1N4118-1/TR is 40 mA, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value corresponds to the current at which the device dissipates its rated 500 mW at 27 V, assuming ideal thermal conditions at 25 °C.
Does JANTX1N4118-1/TR have radiation hardness certification?
Yes, JANTX1N4118-1/TR is inherently radiation hard as described in Microsemi MicroNote 050. The metallurgically bonded glass construction and hermetic sealing provide tolerance to total ionizing dose (TID), making it suitable for satellite and nuclear instrumentation applications without additional shielding or qualification testing.
What does the "TR" suffix mean in JANTX1N4118-1/TR?
The "TR" suffix in JANTX1N4118-1/TR indicates tape-and-reel packaging per EIA-296 standard, as documented on page 2 of T4-LDS-0245-2 Rev. 1. This format supports automated pick-and-place assembly and is the standard shipping configuration for volume orders of this MIL-qualified Zener diode.
JANTX1N4118-1/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
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANTX1N4118-1/TR FAQ
1.How can I place an order for JANTX1N4118-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4118-1/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 JANTX1N4118-1/TR reliable?
The price and inventory of JANTX1N4118-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4118-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4118-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4118-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4118-1/TR?
JANTX1N4118-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4118-1/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 JANTX1N4118-1/TR?
For technical support, including JANTX1N4118-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4118-1/TR requirements.
6.How does Aetrix verify that JANTX1N4118-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4118-1/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 JANTX1N4118-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4118-1/TR?
All JANTX1N4118-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4118-1/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 JANTX1N4118-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4118-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4118-1/TR Tags
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