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Microchip Technology JANS1N4119-1/TR
- Part No.:
- JANS1N4119-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
JANS1N4119-1/TR.pdf
- Description:
- DIODE ZENER 28V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
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Product details
Overview
JANS1N4119-1/TR from Microsemi is a 28.0 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial-leaded package, qualified to JANS level per MIL-PRF-19500/435, with 1% voltage tolerance, 200 Ω dynamic impedance at 250 mA test current, and 0.01 µA maximum reverse leakage at 21.3 V. It delivers stable voltage regulation in radiation-hardened aerospace power conditioning circuits.
For engineers reviewing the JANS1N4119-1/TR datasheet, JANS1N4119-1/TR pinout, JANS1N4119-1/TR application, or JANS1N4119-1/TR equivalent, key selection criteria include its JANS-level reliability qualification, low noise density (≤1 µV/√Hz), hermetic DO-35 packaging, temperature coefficient of +0.095 %/°C, and compatibility with high-reliability analog reference and overvoltage clamp designs.
Technical Context
This device operates as a precision shunt voltage regulator in reverse-biased breakdown mode, with cathode band marking polarity. Its metallurgical bond construction ensures mechanical stability under thermal cycling and shock, critical for space-grade applications.
The JANS1N4119-1/TR exhibits a nominal Zener voltage of 28.0 V at 250 mA test current (IZT), with dynamic impedance (ZZT) of 200 Ω and temperature coefficient (αVZ) of +0.095 %/°C - indicating predictable positive drift across -65 °C to +175 °C junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V at IZT = 250 mA - defines precise regulation point for reference and clamp circuits |
| Power Dissipation | 500 mW at TC = 25 °C - supports continuous operation in compact, conduction-cooled layouts |
| Zener Impedance ZZT | 200 Ω at IZT - determines output voltage variation under load transients |
| Reverse Leakage IR | 0.01 µA at VR = 21.3 V - ensures minimal error current in high-impedance bias networks |
| Temp Coefficient αVZ | +0.095 %/°C - enables accurate thermal drift compensation in precision references |
| Noise Density ND | ≤1 µV/√Hz - critical for low-noise analog signal chains and metrology-grade references |
| Junction Temp Range | -65 °C to +175 °C - validated for extended-range operation in satellite and avionics environments |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode indicated by colored band; weight ≈ 0.2 g; lead length 25.4–38.1 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to system ground or lower-potential rail in shunt regulation topology |
| Cathode | Zener breakdown terminal / regulation output node | Banded end; connected to regulated voltage rail; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 JANS qualification | Validated for Class S space applications with full lot traceability and screening per MIL-STD-750 |
| Metallurgical bond construction | Eliminates interfacial delamination risk during thermal cycling and mechanical shock |
| Hermetic DO-35 glass package | Prevents moisture ingress and long-term parameter drift in humid or vacuum environments |
| Radiation hardness | Inherently tolerant to total ionizing dose (TID) per Microsemi MicroNote 050 - no derating required up to 100 krad(Si) |
| Low capacitance | Typical <2 pF - preserves high-frequency response in RF detector and fast-clamp circuits |
Applications
| Avionics Power Reference | Satellite Bus Voltage Clamp |
|---|---|
Use Scenario: Providing stable 28 V reference for ADC biasing and sensor excitation in flight control computers. IC Role / Device Role / Timing Role: Shunt voltage reference diode regulating supply rail against input ripple and load variation. Use Value: JANS qualification and ±1% tolerance ensure calibration integrity across mission lifetime without recalibration. | Use Scenario: Clamping 28 V bus against transient overvoltage events in LEO satellite power distribution units. IC Role / Device Role / Timing Role: Fast-acting shunt protector absorbing surge energy above 28 V threshold. Use Value: Hermetic DO-35 package and metallurgical bond withstand repeated surges without parameter shift or seal failure. |
| Rad-Hard Analog Front-End | Tactical Radio Voltage Regulator |
Use Scenario: Biasing op-amps and precision comparators in radiation-hardened telemetry signal conditioning modules. IC Role / Device Role / Timing Role: Low-noise (≤1 µV/√Hz), low-capacitance Zener reference establishing DC operating points. Use Value: Minimal noise injection preserves SNR in µV-level sensor signal paths exposed to gamma irradiation. | Use Scenario: Regulating 28 V primary supply for RF power amplifier stages in manpack radios deployed in extreme desert conditions. IC Role / Device Role / Timing Role: High-temperature-stable shunt regulator maintaining voltage accuracy from -40 °C to +85 °C ambient. Use Value: +0.095 %/°C tempco and -65 °C to +175 °C junction rating enable reliable operation without thermal derating. |
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 SMT production and board space constraints outweigh manual assembly needs |
| JANTXV1N4119-1 | Identical Zener parameters and DO-35 package; qualified only to JANTXV level (not JANS) | Lacks full Class S screening and radiation hardness documentation per MIL-PRF-19500/435 Annex A | Select for high-reliability ground-based systems where full JANS screening is not mandated |
Compared with JANS1N4119-1/TR, the 1N4119US-1 offers identical regulation performance in a space-saving SMT form factor, while the JANTXV1N4119-1 provides near-equivalent reliability at lower cost and screening depth - both require explicit validation for radiation or Class S deployment.
Availability
JANS1N4119-1/TR is available at Aetrix Electronics and suitable for avionics power reference, satellite bus voltage clamp, and rad-hard analog front-end applications requiring stable component supply, full traceability, and guaranteed long-term obsolescence management.
Supply support for JANS1N4119-1/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 aerospace-grade analog and mixed-signal components.
The JANS1N4119-1/TR belongs to Microsemi's legacy 1N4099–1N4135 family of mil-qualified Zener diodes, designed specifically for precision voltage regulation in mission-critical defense, space, and nuclear instrumentation systems.
FAQ
What is the Zener voltage tolerance for JANS1N4119-1/TR?
The JANS1N4119-1/TR has a nominal Zener voltage of 28.0 V with a 1% tolerance, corresponding to the "D" suffix in the part nomenclature per MIL-PRF-19500/435. This tight tolerance ensures consistent regulation across production lots in high-precision applications such as avionics references and satellite power monitors.
Is JANS1N4119-1/TR RoHS compliant?
No, JANS1N4119-1/TR is not RoHS compliant. Per the manufacturer's documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants; JANS-level parts retain tin-lead plating to meet MIL-STD-750 solderability and reliability requirements for high-reliability military and space applications.
What does the "TR" suffix indicate in JANS1N4119-1/TR?
"TR" indicates tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly. The JANS1N4119-1/TR is supplied in reels optimized for high-volume production of aerospace-grade electronics, with full lot traceability and JANS-level screening maintained throughout packaging.
How is polarity marked on JANS1N4119-1/TR?
Polarity is marked by a visible cathode band on the glass body of the JANS1N4119-1/TR. The banded end is the cathode and must be held at a higher potential than the anode for proper Zener regulation. This marking complies with JEDEC standards and is verified during JANS-level visual inspection per MIL-STD-883.
What is the maximum junction temperature for JANS1N4119-1/TR?
The maximum junction temperature for JANS1N4119-1/TR is +175 °C, with a minimum of -65 °C. This wide range is validated under MIL-PRF-19500/435 testing and supports operation in extreme environments such as satellite payload bays and jet engine-mounted electronics where thermal cycling exceeds commercial limits.
JANS1N4119-1/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 (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500/435
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
JANS1N4119-1/TR FAQ
1.How can I place an order for JANS1N4119-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for JANS1N4119-1/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 JANS1N4119-1/TR reliable?
The price and inventory of JANS1N4119-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JANS1N4119-1/TR is usually 5 days.
3.What payment methods are accepted for JANS1N4119-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JANS1N4119-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JANS1N4119-1/TR?
JANS1N4119-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JANS1N4119-1/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 JANS1N4119-1/TR?
For technical support, including JANS1N4119-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JANS1N4119-1/TR requirements.
6.How does Aetrix verify that JANS1N4119-1/TR is sourced from the original manufacturer or authorized distributors?
All JANS1N4119-1/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 JANS1N4119-1/TR meets industry standards.
7.What is the process for return or replacement of JANS1N4119-1/TR?
All JANS1N4119-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JANS1N4119-1/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 JANS1N4119-1/TR part is unused and in its original packaging.
Return procedure for JANS1N4119-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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