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Microchip Technology JANTX1N4119C-1/TR
- Part No.:
- JANTX1N4119C-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4119C-1/TR.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,538
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Product details
Overview
JANTX1N4119C-1/TR from Microsemi is a 28.0 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 and defense power supplies.
For engineers reviewing the JANTX1N4119C-1/TR datasheet, JANTX1N4119C-1/TR pinout, JANTX1N4119C-1/TR application, or JANTX1N4119C-1/TR equivalent, key selection criteria include Zener voltage accuracy (±2%), low noise density (1 µV/√Hz), radiation hardness, hermetic DO-35 packaging, and MIL-spec thermal derating behavior.
Technical Context
This device operates as a precision shunt voltage regulator with a nominal Zener voltage of 28.0 V at 250 mA test current, exhibiting a temperature coefficient of +0.095 %/°C and dynamic impedance of 200 Ω at IZT. Its metallurgical bond construction ensures stable breakdown characteristics under thermal cycling and radiation exposure.
Designed for operation in reverse-biased mode with cathode band positive, it delivers regulated output across wide current ranges (IZK to IZM = 21.3 mA max) while maintaining low capacitance (<5 pF typical) and minimal leakage (IR ≤ 0.01 µA at VR = 22.4 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V ±2% at 250 mA - defines precise regulation point for reference and clamp circuits |
| Power Dissipation | 500 mW at 25 °C, linearly derated to zero at 175 °C - sets thermal design margin for PCB layout |
| Zener Impedance ZZT | 200 Ω at 250 mA - determines regulation stability under load transients |
| Noise Density ND | 1 µV/√Hz - enables low-noise analog references in precision instrumentation |
| Reverse Leakage IR | ≤0.01 µA at 22.4 V - ensures minimal quiescent current in standby modes |
| Temp Coefficient αVZ | +0.095 %/°C - quantifies voltage drift over operating temperature range |
| Package | DO-35 (DO-204AH) - axial-leaded, hermetically sealed glass package for high-reliability mounting |
Pinout & Package
DO-35 (DO-204AH) axial-leaded 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground/reference node in shunt regulator configuration | Connected to system ground or low-impedance return path; carries full load current during regulation |
| Cathode | Regulated output node | Banded end; held at precise 28.0 V relative to anode; must be biased positive for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for aerospace and defense applications requiring extended lifetime and radiation tolerance |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and mechanical stress |
| Low noise density (1 µV/√Hz) | Supports use in precision analog references where signal integrity is critical |
| Hermetic glass DO-35 package | Prevents moisture ingress and long-term parameter drift in harsh environments |
| ±2% Zener voltage tolerance | Reduces need for post-assembly trimming in high-accuracy power supply designs |
Applications
| Aerospace Power Conditioning | Defense System Reference Supplies |
|---|---|
Use Scenario: Regulating auxiliary 28 V bus in satellite power distribution units under wide temperature swings (-65 °C to +175 °C). IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias for DC-DC controller feedback networks. Use Value: JANTX1N4119C-1/TR's JANTX qualification and +0.095 %/°C tempco ensure <±0.5% output variation across mission-critical thermal profiles. | Use Scenario: Generating precision 28 V reference in radar front-end receiver power modules exposed to ionizing radiation. IC Role / Device Role / Timing Role: Radiation-hardened Zener clamp protecting ADC reference inputs from ESD and overvoltage events. Use Value: JANTX1N4119C-1/TR's inherent radiation hardness (per MicroNote 050) and hermetic DO-35 package maintain regulation integrity after 100 krad(Si) exposure. |
| Avionics Sensor Excitation | Tactical Radio Bias Networks |
Use Scenario: Supplying excitation voltage to strain-gauge bridges in flight control surface position sensors. IC Role / Device Role / Timing Role: Low-noise 28 V reference source for ratiometric measurement circuits. Use Value: JANTX1N4119C-1/TR's 1 µV/√Hz noise density prevents degradation of microvolt-level bridge output resolution. | Use Scenario: Stabilizing local oscillator bias rails in HF/VHF transceivers operating in mobile military platforms. IC Role / Device Role / Timing Role: Temperature-stable shunt regulator for RF amplifier stage biasing. Use Value: JANTX1N4119C-1/TR's tight ±2% tolerance and linear derating curve enable predictable bias current over vehicle cabin temperature range. |
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 28 V Zener voltage and ±2% tolerance, but in surface-mount DO-213AA package | Requires rework of PCB layout for SMT assembly; lacks axial-leaded mechanical robustness | Select when board space is constrained and automated placement is required |
| JANS1N4119C-1 | Identical electrical specs but qualified to JANS level (highest MIL-PRF-19500 reliability tier) | Suitable for crewed spacecraft and nuclear command systems where failure probability must be <10⁻⁹/hour | Select when full JANS screening and lot traceability are mandated by program requirements |
Compared with JANTX1N4119C-1/TR, the 1N4119US-1 offers footprint reduction at the cost of mechanical mounting flexibility, while JANS1N4119C-1 provides enhanced reliability assurance without electrical trade-offs-enabling tiered sourcing across mission-critical subsystems.
Availability
JANTX1N4119C-1/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, defense system reference supplies, and avionics sensor excitation requiring stable component supply across extended product lifecycles.
Supply support for JANTX1N4119C-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 JANTX1N4119C-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term hermeticity are non-negotiable.
FAQ
What is the Zener voltage tolerance of JANTX1N4119C-1/TR?
JANTX1N4119C-1/TR has a Zener voltage tolerance of ±2%, denoted by the "C" suffix in its part number per MIL-PRF-19500/435 nomenclature. This means its measured VZ at 250 mA test current falls within 27.44 V to 28.56 V at 25 °C, enabling tighter regulation than standard ±5% variants without requiring external trimming.
Is JANTX1N4119C-1/TR suitable for high-radiation environments?
Yes, JANTX1N4119C-1/TR is inherently radiation hard as documented in Microsemi MicroNote 050. Its metallurgically bonded structure and hermetic DO-35 glass package provide proven performance up to 100 krad(Si), making it suitable for satellite, avionics, and nuclear instrumentation applications where total ionizing dose resistance is required.
What is the maximum reverse leakage current for JANTX1N4119C-1/TR?
The maximum reverse leakage current (IR) for JANTX1N4119C-1/TR is 0.01 µA at VR = 22.4 V, per the Electrical Characteristics table on page 3 of T4-LDS-0245-2. This ultra-low leakage supports low-power standby modes in battery-backed systems and minimizes error in high-impedance reference networks.
Does JANTX1N4119C-1/TR require derating above 25 °C?
Yes, JANTX1N4119C-1/TR must be linearly derated starting at 25 °C ambient temperature, with rated power dissipation decreasing from 500 mW to zero at 175 °C, per Figure 2 in the datasheet. At 100 °C ambient, its usable power drops to approximately 250 mW, requiring thermal-aware PCB layout with adequate copper area.
How is polarity marked on JANTX1N4119C-1/TR?
JANTX1N4119C-1/TR uses a cathode band marking on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the anode for proper Zener regulation. This marking complies with JEDEC standards and is visible under standard visual inspection during manual or automated assembly.
JANTX1N4119C-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:
- ±2%
- 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)
JANTX1N4119C-1/TR FAQ
1.How can I place an order for JANTX1N4119C-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4119C-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 JANTX1N4119C-1/TR reliable?
The price and inventory of JANTX1N4119C-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 JANTX1N4119C-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4119C-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4119C-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4119C-1/TR?
JANTX1N4119C-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4119C-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 JANTX1N4119C-1/TR?
For technical support, including JANTX1N4119C-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4119C-1/TR requirements.
6.How does Aetrix verify that JANTX1N4119C-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4119C-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 JANTX1N4119C-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4119C-1/TR?
All JANTX1N4119C-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4119C-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 JANTX1N4119C-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4119C-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4119C-1/TR Tags
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