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Microchip Technology JANTX1N4119D-1/TR
- Part No.:
- JANTX1N4119D-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4119D-1/TR.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,493
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Product details
Overview
JANTX1N4119D-1/TR from Microsemi is a 28.0 V, 1% tolerance, 500 mW metallurgically bonded glass Zener diode in DO-35 package, qualified to JANTX level per MIL-PRF-19500/435 for high-reliability voltage regulation in aerospace and defense power supplies.
For engineers reviewing the JANTX1N4119D-1/TR datasheet, JANTX1N4119D-1/TR pinout, JANTX1N4119D-1/TR application, or JANTX1N4119D-1/TR equivalent, key selection criteria include Zener voltage tolerance (±1%), low noise density (1 µV/√Hz), radiation hardness, and military-grade thermal derating behavior up to +175 °C junction temperature.
Technical Context
This device operates as a precision shunt regulator with a nominal Zener voltage of 28.0 V at 250 mA test current, exhibiting a positive temperature coefficient of +0.095 %/°C and dynamic impedance of 200 Ω at IZT. Its metallurgical bond construction ensures stable regulation across wide current and temperature ranges.
Designed for high-reliability environments, JANTX1N4119D-1/TR maintains ≤0.01 µA reverse leakage at VR = 21.3 V and delivers low-noise performance critical for reference circuits - noise density is specified at 1 µV/√Hz, consistent with sub-30 V Zener devices in this family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V ±1% at 250 mA - enables precise 28 V rail regulation with tight initial accuracy |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - supports operation in high-temp avionics enclosures |
| Dynamic Impedance ZZT | 200 Ω at 250 mA - ensures minimal output voltage shift under load transients |
| Noise Density ND | 1 µV/√Hz - suitable for low-noise analog references and sensor excitation circuits |
| Reverse Leakage IR | ≤0.01 µA at 21.3 V - guarantees negligible quiescent current in standby mode |
| Temp Coefficient αVZ | +0.095 %/°C - predictable voltage drift over -65 to +175 °C operating range |
| Junction Temp Range | -65 to +175 °C - validated for space-grade thermal cycling and burn-in |
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 | Reference ground node | Connected to system ground or lower-potential rail; forms return path for Zener current |
| Cathode | Regulated output node | Banded end; supplies stable 28.0 V when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for flight-critical subsystems including power sequencing and bus monitoring |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and vibration stress |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no derating required for LEO missions |
| Low capacitance | Typical <2 pF - preserves high-frequency stability in feedback loops and RF bias networks |
| ESD immunity | Non-sensitive per MIL-STD-750 method 1020 - withstands handling without protection circuitry |
Applications
| Avionics Power Reference | Satellite Bus Voltage Monitor |
|---|---|
Use Scenario: Stable 28 V reference for ADC input scaling and DAC output calibration in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference providing traceable, temperature-compensated DC bias. Use Value: ±1% initial tolerance and +0.095 %/°C TC ensure <±2.5% total error over -55 to +125 °C operational range. | Use Scenario: Overvoltage detection node on 28 V primary bus in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Precision clamp element triggering fault logic when bus exceeds 29.5 V. Use Value: Low dynamic impedance (200 Ω) ensures fast response to transient overvoltage events without latch-up. |
| Rad-Hard Sensor Excitation | Tactical Radio Bias Supply |
Use Scenario: Constant-current excitation source for radiation-hardened RTD and strain gauge bridges in nuclear instrumentation. IC Role / Device Role / Timing Role: Low-noise Zener-based current source reference (via series resistor). Use Value: 1 µV/√Hz noise density prevents signal degradation in microvolt-level bridge outputs. | Use Scenario: Local 28 V regulation for PA driver stages and synthesizer VCO tuning in manpack radios. IC Role / Device Role / Timing Role: Local shunt regulator maintaining clean supply for sensitive RF ICs. Use Value: Hermetic DO-35 package and -65 to +175 °C rating support operation in uncontrolled environmental enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4119US-1/TR | Same Zener voltage and tolerance, but in surface-mount DO-213AA package; no axial leads | Requires PCB rework for SMT assembly; unsuitable for through-hole prototyping or legacy board repair | Select when automated placement and board space reduction are prioritized over mechanical serviceability |
| JANTXV1N4119D-1/TR | Identical electrical specs but qualified to JANTXV level (enhanced screening, 100% lot testing) | Required for mission-critical launch vehicle systems where failure probability must be <10⁻⁶ per hour | Select only when JANTXV-level documentation, traceability, and screening reports are contractually mandated |
Compared with JANTX1N4119D-1/TR, the DO-213AA alternative enables higher-density layouts but sacrifices field-replaceability, while the JANTXV variant adds cost and lead time for marginal reliability gain in non-safety-critical applications.
Availability
JANTX1N4119D-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage monitor, and rad-hard sensor excitation requiring stable component supply across extended temperature and radiation environments.
Supply support for JANTX1N4119D-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 1N4099–1N4135-1 series was developed specifically for military and space applications demanding hermetic packaging, radiation tolerance, and MIL-qualified screening - not commercial-grade replacements.
FAQ
What is the Zener voltage tolerance of JANTX1N4119D-1/TR?
JANTX1N4119D-1/TR has a Zener voltage tolerance of ±1%, denoted by the "D" suffix in its nomenclature. This means its nominal 28.0 V Zener voltage is guaranteed between 27.72 V and 28.28 V at 250 mA test current and 25 °C ambient, supporting precision regulation in calibrated systems.
Is JANTX1N4119D-1/TR suitable for high-temperature operation?
Yes, JANTX1N4119D-1/TR is rated for junction temperatures from -65 to +175 °C and features linear power derating from 500 mW at 25 °C to zero at 175 °C. Its metallurgical bond and hermetic DO-35 package make it suitable for engine-mounted avionics and downhole oilfield electronics.
Does JANTX1N4119D-1/TR require external heat sinking?
No, JANTX1N4119D-1/TR does not require external heat sinking under typical conditions. With RθJA = 300 °C/W on FR4 and RθJL = 250 °C/W at 10 mm lead length, it dissipates 500 mW within safe limits when mounted per MIL-STD-750 guidelines - no added thermal mass needed for standard 28 V reference use.
What is the noise performance of JANTX1N4119D-1/TR?
JANTX1N4119D-1/TR exhibits a noise density of 1 µV/√Hz at 250 mA, consistent with low-voltage Zeners in the 1N41xx-1 family. This value is measured using a 1–3 kHz bandpass filter and enables use in low-noise analog references where voltage fluctuations must remain below 10 µV RMS over audio bandwidths.
How is polarity marked on JANTX1N4119D-1/TR?
JANTX1N4119D-1/TR uses a cathode band to indicate polarity: the banded end is the cathode and must be held at a higher potential than the anode to achieve Zener breakdown and regulation. Reverse connection will forward-bias the diode at ~1.1 V, preventing regulation and risking overcurrent if uncurrent-limited.
JANTX1N4119D-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):
- 28 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 10 nA @ 21.3 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)
JANTX1N4119D-1/TR FAQ
1.How can I place an order for JANTX1N4119D-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4119D-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 JANTX1N4119D-1/TR reliable?
The price and inventory of JANTX1N4119D-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 JANTX1N4119D-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4119D-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4119D-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4119D-1/TR?
JANTX1N4119D-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4119D-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 JANTX1N4119D-1/TR?
For technical support, including JANTX1N4119D-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4119D-1/TR requirements.
6.How does Aetrix verify that JANTX1N4119D-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4119D-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 JANTX1N4119D-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4119D-1/TR?
All JANTX1N4119D-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4119D-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 JANTX1N4119D-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4119D-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4119D-1/TR Tags
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