My Inquiry
My Account
Microchip Technology JANTX1N4119-1
- Part No.:
- JANTX1N4119-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4119-1.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:2,185
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JANTX1N4119-1 from Microsemi is a 500 mW, 28.0 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 applications. It delivers stable voltage regulation at 250 mA test current with 200 Ω dynamic impedance, 0.01 µA max reverse leakage at 21.3 V, and +0.095 %/°C temperature coefficient.
For engineers reviewing the JANTX1N4119-1 datasheet, JANTX1N4119-1 pinout, JANTX1N4119-1 application, or JANTX1N4119-1 equivalent, key selection criteria include Zener voltage tolerance, MIL-qualified reliability level, thermal resistance (250 °C/W junction-to-lead), noise density (≤1 µV/√Hz), and hermetic glass packaging for radiation-hardened environments.
Technical Context
The JANTX1N4119-1 operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures low noise and stable long-term Zener voltage under thermal cycling and radiation exposure.
Designed for military-grade operation, it supports junction temperatures from –65 °C to +175 °C, linearly derates power from 500 mW at 25 °C to zero at 175 °C, and exhibits minimal capacitance (<1.5 pF typical at 28 V) per Figure 3 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V ±5% at 250 mA - defines nominal regulation point with tight tolerance for reference stability |
| Power Dissipation | 500 mW @ TL = 25 °C - sets maximum continuous DC power handling before thermal derating begins |
| Dynamic Impedance ZZT | 200 Ω @ 250 mA - determines output voltage variation under load current changes |
| Reverse Leakage IR | 0.01 µA @ 21.3 V - ensures minimal parasitic current in standby or high-impedance bias networks |
| Temp. Coefficient αVZ | +0.095 %/°C - quantifies voltage drift over temperature, critical for wide-range environmental operation |
| Noise Density ND | ≤1 µV/√Hz - enables use in low-noise analog references and precision instrumentation front-ends |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in extreme aerospace, downhole, and defense platforms |
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 reference ground node | Connected to system ground or lowest potential point in shunt regulator topology |
| Cathode | Zener regulation terminal / input voltage node | Banded end; connects to unregulated supply rail; maintains 28.0 V across load when reverse biased |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Guarantees screening, testing, and traceability for defense and space programs requiring assured reliability |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal shock and radiation, ensuring long-term parameter stability |
| Hermetic glass DO-35 package | Provides immunity to moisture ingress and atmospheric corrosion in harsh operational environments |
| Low noise density (≤1 µV/√Hz) | Enables direct use in high-resolution ADC references and low-drift op-amp bias networks without filtering |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050, suitable for satellite subsystems |
Applications
| Avionics Power Conditioning | Satellite Onboard Reference |
|---|---|
Use Scenario: Regulating auxiliary 28 V bus in flight control computers where input voltage varies between 24–32 V DC. IC Role / Device Role / Timing Role: Shunt Zener reference providing stable 28 V reference for analog sensor signal conditioning and DAC output calibration. Use Value: Maintains <±0.5% output accuracy over –55 °C to +125 °C due to +0.095 %/°C tempco and MIL-qualified thermal cycling performance. | Use Scenario: Generating precision bias voltage for radiation-tolerant op-amps in star tracker electronics. IC Role / Device Role / Timing Role: Low-noise, radiation-hardened voltage reference replacing active regulators in ultra-low-power subsystems. Use Value: Delivers ≤1 µV/√Hz noise and survives >100 krad(Si) TID without parameter shift, per MicroNote 050. |
| Downhole Telemetry Interface | Tactical Radio RF Bias Network |
Use Scenario: Stabilizing bias for high-temp ASICs in oil/gas logging tools operating at 175 °C ambient. IC Role / Device Role / Timing Role: High-temperature shunt regulator maintaining 28 V for data acquisition front-end under thermal stress. Use Value: Operates continuously up to +175 °C junction temperature with full 500 mW derated power and verified parametric stability. | Use Scenario: Providing clean DC bias to GaN PA stages in manpack radios exposed to ESD and vibration. IC Role / Device Role / Timing Role: ESD-immune (MIL-STD-750/1020) Zener clamp protecting RF amplifier gate bias nodes. Use Value: Withstands >15 kV HBM ESD events and exhibits no parameter shift after mechanical shock per MIL-STD-883. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4119US (Microchip) | Same 28 V nominal Zener, but commercial-grade (non-MIL), DO-213AA surface-mount package | Lacks JANTX qualification, radiation hardness, and hermetic glass seal; suited for non-critical industrial PCBs | Select when cost, board space, or reflow compatibility outweigh military reliability requirements |
| JANTXV1N4119 (Microsemi) | Identical electrical specs but qualified to JANTXV level with enhanced screening (burn-in, life test, lot acceptance) | Required for mission-critical avionics and launch vehicle systems demanding extended reliability validation | Select when program mandates JANTXV-level assurance beyond standard JANTX screening |
Compared with JANTX1N4119-1, the 1N4119US offers SMT compatibility but sacrifices MIL qualification and radiation tolerance, while JANTXV1N4119 provides higher screening rigor for life-critical deployments without changing circuit design or layout.
Availability
JANTX1N4119-1 is available at Aetrix Electronics and suitable for avionics power conditioning, satellite onboard reference, and downhole telemetry interface requiring stable component supply across extended temperature ranges and high-reliability lifecycles.
Supply support for JANTX1N4119-1 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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The JANTX1N4119-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for voltage reference stability, radiation hardness, and thermal resilience in mission-critical systems.
FAQ
What is the Zener voltage tolerance for JANTX1N4119-1?
The JANTX1N4119-1 has a nominal Zener voltage of 28.0 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 T4-LDS-0245-2 Rev. 1. This tolerance applies under thermal equilibrium at 25 °C with 250 mA test current.
Is JANTX1N4119-1 RoHS compliant?
No, JANTX1N4119-1 is not RoHS compliant. Per the nomenclature guide on page 2 of T4-LDS-0245-2 Rev. 1, the "e3" suffix denotes RoHS compliance and is only available on commercial-grade versions. JANTX1N4119-1 carries no RoHS suffix and uses traditional tin-lead plating per MIL-STD-750.
What is the maximum reverse leakage current for JANTX1N4119-1?
The maximum reverse leakage current (IR) for JANTX1N4119-1 is 0.01 µA measured at 21.3 V (75% of nominal VZ), as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This value reflects worst-case leakage under rated conditions.
Does JANTX1N4119-1 require heatsinking in standard operation?
JANTX1N4119-1 does not require external heatsinking at 500 mW dissipation when lead length is maintained at 3/8 inch (10 mm) from the body, achieving RθJL = 250 °C/W. However, PCB copper area and ambient airflow must be considered if operating near thermal limits or at elevated ambient temperatures.
What is the noise performance of JANTX1N4119-1?
JANTX1N4119-1 exhibits a maximum noise density of ≤1 µV/√Hz, consistent with the "<1 µV/√Hz at lower voltages" statement in the FEATURES section (page 1) and confirmed by the trend in the Electrical Characteristics table where ND drops rapidly below 6.8 V. This is measured at 1 kHz–3 kHz bandwidth with 250 mA Zener current.
JANTX1N4119-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 28 V
- Tolerance:
- ±5%
- 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)
JANTX1N4119-1 FAQ
1.How can I place an order for JANTX1N4119-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4119-1 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 JANTX1N4119-1 reliable?
The price and inventory of JANTX1N4119-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4119-1 is usually 5 days.
3.What payment methods are accepted for JANTX1N4119-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4119-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4119-1?
JANTX1N4119-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4119-1 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 JANTX1N4119-1?
For technical support, including JANTX1N4119-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4119-1 requirements.
6.How does Aetrix verify that JANTX1N4119-1 is sourced from the original manufacturer or authorized distributors?
All JANTX1N4119-1 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 JANTX1N4119-1 meets industry standards.
7.What is the process for return or replacement of JANTX1N4119-1?
All JANTX1N4119-1 units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4119-1, 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 JANTX1N4119-1 part is unused and in its original packaging.
Return procedure for JANTX1N4119-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4119-1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
