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Microchip Technology JANTX1N4119D-1
- Part No.:
- JANTX1N4119D-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4119D-1.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,124
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Product details
Overview
JANTX1N4119D-1 from Microsemi is a 500 mW, 28.0 V ±1% tolerance Zener diode in DO-35 (DO-204AH) glass package, metallurgically bonded for high-reliability voltage regulation in aerospace and defense systems. It delivers 21.3 mA maximum Zener current at 25 °C, exhibits +0.095 %/°C temperature coefficient, and maintains low noise density of 1 µV/√Hz.
For engineers reviewing the JANTX1N4119D-1 datasheet, JANTX1N4119D-1 pinout, JANTX1N4119D-1 application, or JANTX1N4119D-1 equivalent, key selection criteria include its MIL-PRF-19500/435 JANTX qualification, 1% voltage tolerance, DO-35 axial-leaded hermetic packaging, and stable regulation across -65 °C to +175 °C junction temperature range.
Technical Context
This device operates as a precision shunt voltage regulator, biased in reverse breakdown with cathode band indicating polarity. Its metallurgical bond construction ensures mechanical robustness and long-term stability under thermal cycling and radiation exposure.
It is characterized at 250 mA Zener test current (IZT), with dynamic impedance of 200 Ω at IZT, reverse leakage limited to 0.01 µA at 21.3 V, and noise density specified at 1 µV/√Hz - consistent with low-noise analog reference and biasing applications.
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 tolerance for mission-critical references. |
| Power Dissipation | 500 mW @ TC = 25 °C - supports stable operation in compact, conduction-cooled environments without forced airflow. |
| Temperature Coefficient | +0.095 %/°C - predictable positive drift allows accurate compensation in wide-temperature-range designs. |
| Noise Density | 1 µV/√Hz - ultra-low broadband noise suitable for precision analog signal chains and sensor excitation. |
| Dynamic Impedance | 200 Ω at IZT - ensures minimal output voltage variation under load current changes up to rated Zener current. |
| Junction Temp Range | -65 °C to +175 °C - qualified for extreme-environment use in avionics, space-grade power supplies, and downhole electronics. |
| Reverse Leakage | ≤0.01 µA @ 21.3 V - negligible standby current preserves battery life and avoids loading of high-impedance nodes. |
Pinout & Package
DO-35 (DO-204AH) axial-leaded hermetically sealed glass package with cathode indicated by color band. Leads are tin-lead or RoHS-compliant matte-tin plated, solderable per MIL-STD-750 method 2026. Weight ≈ 0.2 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system ground or lowest potential point; defines Zener breakdown reference plane. |
| Cathode (banded end) | Regulated output node | Provides stable 28.0 V output when reverse-biased; must be held positive relative to anode for regulation. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Meets military screening for burn-in, temperature cycling, and lot acceptance testing - required for flight hardware procurement. |
| 1% Zener voltage tolerance (D suffix) | Reduces calibration overhead and eliminates need for external trimming in precision reference circuits. |
| Metallurgical bond construction | Prevents interfacial delamination under shock/vibration - critical for launch and airborne platforms. |
| Low noise density (1 µV/√Hz) | Enables use in low-noise op-amp biasing, ADC reference buffers, and RF front-end bias networks. |
| Hermetic glass DO-35 package | Provides moisture and contaminant immunity over full military temperature range without conformal coating. |
Applications
| Aerospace Power Reference | Defense System Biasing |
|---|---|
Use Scenario: Providing stable 28 V reference for analog-to-digital converters in satellite telemetry modules operating in LEO radiation environment. IC Role / Device Role / Timing Role: Shunt voltage regulator establishing precision DC reference for data acquisition subsystems. Use Value: JANTX1N4119D-1's radiation hardness and 1% tolerance eliminate recalibration cycles during extended orbital missions. | Use Scenario: Biasing RF power amplifiers in tactical radar transceivers exposed to rapid thermal transients and EMI. IC Role / Device Role / Timing Role: Low-noise Zener source for amplifier stage quiescent current setting and gain stabilization. Use Value: 1 µV/√Hz noise density prevents AM-to-PM conversion and preserves radar pulse fidelity under jamming conditions. |
| Avionics Sensor Excitation | High-Reliability Industrial Control |
Use Scenario: Supplying excitation voltage to strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Precision voltage source maintaining bridge balance accuracy across -55 °C to +125 °C ambient. Use Value: +0.095 %/°C tempco enables predictable error correction using onboard microcontroller lookup tables. | Use Scenario: Regulating auxiliary supply rails in nuclear plant instrumentation cabinets requiring >20-year field reliability. IC Role / Device Role / Timing Role: Primary shunt regulator in redundant 28 V DC-DC converter feedback loops. Use Value: JANTX1N4119D-1's JANTX qualification and -65 °C to +175 °C rating ensure uninterrupted operation during seismic events and coolant loss scenarios. |
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 | Same electrical specs but in DO-213AA surface-mount package; no axial leads. | Requires PCB re-layout for SMT assembly; unsuitable for through-hole prototyping or wire-wrap. | Select when automated assembly, board space constraints, or vibration resistance outweigh lead-forming flexibility. |
| JANTXV1N4119D-1 | Identical electrical and mechanical specs, but qualified to JANTXV level with enhanced screening (e.g., 100% thermal shock, 100% radiographic inspection). | Required for Class S (spaceflight) and critical avionics where failure modes demand zero latent defects. | Select when program requirements mandate JANTXV-level reliability assurance beyond standard JANTX. |
Compared with 1N4119US-1 and JANTXV1N4119D-1, the JANTX1N4119D-1 balances proven military reliability with cost-effective JANTX screening and axial-leaded serviceability - ideal for flight-qualified prototypes and production avionics where manual rework or lead-forming is needed.
Availability
JANTX1N4119D-1 is available at Aetrix Electronics and suitable for aerospace power reference, defense system biasing, and avionics sensor excitation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for JANTX1N4119D-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 JANTX1N4119D-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, designed specifically for precision voltage regulation in harsh-environment electronic systems where long-term stability and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance of JANTX1N4119D-1?
JANTX1N4119D-1 has a nominal Zener voltage of 28.0 V with ±1% tolerance, indicated by the "D" suffix in the part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and applies across the full qualified temperature range when derated per MIL-PRF-19500/435 requirements.
Is JANTX1N4119D-1 RoHS compliant?
No, JANTX1N4119D-1 is not RoHS compliant. The "e3" RoHS designation is only available on commercial-grade versions of this series (e.g., 1N4119D-1e3); JANTX-level parts retain traditional tin-lead plating to meet MIL-STD-750 solderability and reliability requirements for high-reliability applications.
What is the maximum Zener current for JANTX1N4119D-1?
The maximum Zener current (IZM) for JANTX1N4119D-1 is 40 mA at 25 °C, derived from its 500 mW power rating and 28.0 V Zener voltage. At higher temperatures, IZM must be linearly derated starting at 50 °C per the power derating curve in Microsemi T4-LDS-0245-2 Rev. 1.
Does JANTX1N4119D-1 require heatsinking?
JANTX1N4119D-1 does not require external heatsinking under typical conditions due to its DO-35 package thermal resistance of 250 °C/W junction-to-lead (RθJL) and 300 °C/W junction-to-ambient (RθJA) on FR4 board. However, sustained operation above 25 °C ambient requires power derating per Figure 2 in the datasheet to maintain junction temperature ≤175 °C.
How is polarity marked on JANTX1N4119D-1?
JANTX1N4119D-1 uses a cathode band marking on the glass body to indicate polarity. The banded end is the cathode and must be held positive with respect to the anode to operate in Zener breakdown regulation mode. This marking complies with JEDEC DO-35 standards and is visible under standard visual inspection.
JANTX1N4119D-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):
- 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 FAQ
1.How can I place an order for JANTX1N4119D-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4119D-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 JANTX1N4119D-1 reliable?
The price and inventory of JANTX1N4119D-1 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 is usually 5 days.
3.What payment methods are accepted for JANTX1N4119D-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4119D-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4119D-1?
JANTX1N4119D-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4119D-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 JANTX1N4119D-1?
For technical support, including JANTX1N4119D-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4119D-1 requirements.
6.How does Aetrix verify that JANTX1N4119D-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4119D-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 JANTX1N4119D-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4119D-1?
All JANTX1N4119D-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4119D-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 JANTX1N4119D-1 part is unused and in its original packaging.
Return procedure for JANTX1N4119D-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4119D-1 Tags
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