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Microchip Technology JANTX1N4119-1/TR
- Part No.:
- JANTX1N4119-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANTX1N4119-1/TR.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,682
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Product details
Overview
JANTX1N4119-1/TR from Microsemi is a 500 mW, 28.0 V ±5% metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded 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 reverse leakage at 21.3 V, and +0.095 %/°C temperature coefficient.
For engineers reviewing the JANTX1N4119-1/TR datasheet, JANTX1N4119-1/TR pinout, JANTX1N4119-1/TR application, or JANTX1N4119-1/TR equivalent, key selection criteria include its military-grade qualification, low-noise performance (1 µV/√Hz typical), hermetic glass packaging, and precise 28 V Zener voltage for precision reference and overvoltage protection in aerospace, defense, and industrial control systems.
Technical Context
This device operates as a two-terminal shunt voltage regulator, biased in reverse breakdown with cathode band indicating polarity. Its metallurgical bond ensures mechanical robustness and thermal stability across -65 °C to +175 °C junction temperature range, supporting operation under extreme environmental stress.
The JANTX1N4119-1/TR exhibits a positive temperature coefficient (+0.095 %/°C), enabling predictable voltage drift in high-temperature environments. Its 250 °C/W junction-to-lead thermal resistance allows reliable power dissipation up to 500 mW when mounted with 3/8″ lead length, with linear derating to zero at 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V at 250 mA - provides precise reference point for analog circuits and feedback loops |
| Zener Impedance ZZT | 200 Ω - limits output voltage variation under load current changes |
| Reverse Leakage IR | 0.01 µA @ 21.3 V - ensures minimal standby power loss in high-impedance bias networks |
| Noise Density ND | 1 µV/√Hz - enables use in low-noise reference and sensor excitation circuits |
| Power Dissipation PM(AV) | 500 mW - supports continuous regulation in compact, convection-cooled designs |
| Temp Coefficient αVZ | +0.095 %/°C - enables accurate thermal drift compensation in precision references |
| Junction Temp Range | -65 °C to +175 °C - meets extended environmental requirements for military avionics and space-qualified systems |
Pinout & Package
The JANTX1N4119-1/TR is housed in a hermetically sealed axial-leaded DO-35 (DO-204AH) glass package with tin-lead plating. Cathode is marked by a visible band; the banded end must be held positive relative to the anode for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to circuit reference point; sinks current during regulation |
| Anode (unbanded end) | Reference ground node | Connected to system ground or lower-potential rail; completes Zener current path |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANTX qualification | Validated reliability for mission-critical defense electronics with full lot traceability and screening |
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Hermetic glass DO-35 package | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Low noise density (1 µV/√Hz) | Minimizes added noise in precision analog signal chains and ADC reference supplies |
| Non-ESD-sensitive per MIL-STD-750 Method 1020 | Enables safe handling without special ESD controls during assembly and field maintenance |
Applications
| Aerospace Power Monitoring | Defense System Reference |
|---|---|
Use Scenario: Monitoring regulated bus voltage in satellite power distribution units under radiation exposure. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 28 V benchmark for ADC input scaling. Use Value: Radiation-hardened construction and JANTX qualification ensure long-term parametric stability in orbit. | Use Scenario: Precision voltage reference in radar receiver front-end bias networks. IC Role / Device Role / Timing Role: Zener regulator establishing fixed DC bias for low-noise amplifiers and mixers. Use Value: 1 µV/√Hz noise density preserves signal-to-noise ratio in sensitive RF stages. |
| Industrial Control Loop Reference | Avionics Sensor Excitation |
Use Scenario: Providing excitation voltage for strain gauge bridges in turbine engine controllers. IC Role / Device Role / Timing Role: Stable 28 V source for ratiometric measurement circuits requiring <0.1% drift over temperature. Use Value: +0.095 %/°C tempco enables predictable calibration offset correction across -55 °C to +125 °C. | Use Scenario: Supplying regulated bias to pressure transducers in flight control computers. IC Role / Device Role / Timing Role: High-reliability shunt regulator maintaining reference integrity during vibration and thermal shock. Use Value: Hermetic DO-35 package and metallurgical bond prevent failure modes common in non-hermetic alternatives. |
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 surface-mount DO-213AA package; no axial leads | Used where PCB space constraints prohibit through-hole mounting | Select when automated SMT assembly is required and thermal path differs from lead-mounted DO-35 |
| JAN1N4119-1 | Identical electrical and mechanical specs but qualified only to JAN level (lower screening than JANTX) | Suitable for less demanding military programs where full JANTX testing is not mandated | Select when cost sensitivity outweighs need for enhanced burn-in and life test screening |
Compared with JANTX1N4119-1/TR, the 1N4119US-1 offers identical regulation performance in a smaller footprint but requires re-engineering of thermal management and PCB layout, while the JAN1N4119-1 reduces procurement cost and lead time at the expense of reduced reliability screening coverage for critical subsystems.
Availability
JANTX1N4119-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, defense system reference, and industrial control loop reference requiring stable component supply with full MIL-spec traceability and long-term obsolescence management.
Supply support for JANTX1N4119-1/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, radiation-hardened, and military-grade analog and mixed-signal components.
The JANTX1N4119-1/TR belongs to Microsemi's legacy 1N4099–1N4135 series of metallurgically bonded Zener diodes, designed specifically for precision voltage regulation in harsh-environment electronics where long-term stability and parametric consistency are mandatory.
FAQ
What is the Zener voltage tolerance for JANTX1N4119-1/TR?
The JANTX1N4119-1/TR has a nominal Zener voltage of 28.0 V with a standard ±5% tolerance, consistent with the JEDEC-registered 1N4099–1N4135 family. This tolerance applies at 250 mA test current and 25 °C ambient temperature, and is verified per MIL-PRF-19500/435 screening requirements for JANTX-level devices.
Is JANTX1N4119-1/TR RoHS compliant?
No, JANTX1N4119-1/TR is not RoHS compliant. RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants per the datasheet; JANTX-level devices retain tin-lead plating to meet MIL-STD-750 solderability requirements and are exempt from RoHS restrictions under defense procurement regulations.
What does the "TR" suffix mean in JANTX1N4119-1/TR?
The "TR" suffix in JANTX1N4119-1/TR indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. This packaging option is available for all variants in the 1N4099–1N4135 series and does not affect electrical or reliability specifications of the JANTX1N4119-1/TR die or package.
How is polarity indicated on JANTX1N4119-1/TR?
Polarity on JANTX1N4119-1/TR is indicated by a visible cathode band on the glass body. The banded end is the cathode and must be held at a higher potential than the unbanded (anode) end for proper Zener regulation. Reversing polarity subjects the device to forward conduction only, with ~1.1 V drop at 200 mA.
What is the maximum Zener current IZM for JANTX1N4119-1/TR?
The maximum Zener current IZM for JANTX1N4119-1/TR is 40 mA, derived from its 500 mW power rating and 28.0 V nominal Zener voltage (IZM = PM(AV)/VZ). This value assumes operation at 25 °C ambient; actual usable current decreases with rising temperature due to linear derating above 50 °C lead temperature.
JANTX1N4119-1/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:
- ±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/TR FAQ
1.How can I place an order for JANTX1N4119-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANTX1N4119-1/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 JANTX1N4119-1/TR reliable?
The price and inventory of JANTX1N4119-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANTX1N4119-1/TR is usually 5 days.
3.What payment methods are accepted for JANTX1N4119-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANTX1N4119-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANTX1N4119-1/TR?
JANTX1N4119-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANTX1N4119-1/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 JANTX1N4119-1/TR?
For technical support, including JANTX1N4119-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANTX1N4119-1/TR requirements.
6.How does Aetrix verify that JANTX1N4119-1/TR is sourced from the original manufacturer or authorized distributors?
All JANTX1N4119-1/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 JANTX1N4119-1/TR meets industry standards.
7.What is the process for return or replacement of JANTX1N4119-1/TR?
All JANTX1N4119-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANTX1N4119-1/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 JANTX1N4119-1/TR part is unused and in its original packaging.
Return procedure for JANTX1N4119-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JANTX1N4119-1/TR Tags
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