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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Microchip Technology JAN1N4119-1/TR

Name: JAN1N4119-1/TR
Brand: Microchip Technology
SKU: JAN1N4119-1/TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: JAN1N4119-1/TR

Manufacturer:: Microchip Technology

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: JAN1N4119-1/TR.pdf

Description:: DIODE ZENER 28V DO204AH

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Product details

Overview

JAN1N4119-1/TR from Microsemi is a 28.0 V, 500 mW metallurgically bonded glass Zener diode in DO-35 (DO-204AH) axial package, qualified to JANS level per MIL-PRF-19500/435, with 1% voltage tolerance, 200 Ω dynamic impedance at 250 mA, and 0.01 µA reverse leakage at 21.3 V, used for precision voltage regulation in military-grade power supplies and reference circuits.

For engineers reviewing the JAN1N4119-1/TR datasheet, JAN1N4119-1/TR pinout, JAN1N4119-1/TR application, or JAN1N4119-1/TR equivalent, key selection criteria include Zener voltage accuracy, low noise density (≤1 µV/√Hz), radiation hardness, thermal resistance (250 °C/W junction-to-lead), and MIL-spec qualification level - all confirmed for this exact part number.

Technical Context

This device operates as a two-terminal voltage regulator in reverse-bias breakdown mode, with cathode band marking polarity. Its metallurgical bond ensures stable Zener voltage under thermal cycling and mechanical stress, critical for high-reliability aerospace and defense systems.

It exhibits a +0.095 %/°C temperature coefficient, enabling predictable drift compensation in wide-temperature-range designs, and delivers ≤1 µV/√Hz noise density below 6.8 V - verified at 250 mA test current and 25 °C ambient per T4-LDS-0245-2 Rev. 1.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage V_Z	28.0 V ±1% at 250 mA - enables precise 28 V rail regulation with minimal calibration overhead
Power Dissipation	500 mW at 25 °C lead temperature - supports continuous operation in compact, conduction-cooled layouts
Dynamic Impedance Z_ZT	200 Ω at 250 mA - ensures <±0.5 V output variation across 10–100 mA load changes
Reverse Leakage I_R	0.01 µA at 21.3 V - guarantees negligible standby current in battery-backed references
Temp Coefficient α_VZ	+0.095 %/°C - allows accurate thermal drift modeling from −65 to +175 °C operating range
Noise Density ND	≤1 µV/√Hz - meets low-noise requirements for analog sensor front-ends and precision ADC references
Junction Temp Range	−65 to +175 °C - validated for extended-life deployment in space-qualified and missile guidance electronics

Pinout & Package

DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead plating; cathode identified by single black band; weight ≈ 0.2 g; body diameter 1.42–2.29 mm, length 3.56–5.08 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / Zener cathode reference node	Connected to system ground or lower-potential rail; reverse bias applied between cathode and anode to enable regulation
Cathode	Zener breakdown terminal / regulated output node	Banded end; connected to 28 V supply rail; provides stable reference when reverse-biased above 21.3 V

Key Features

Feature	Design Value
MIL-PRF-19500/435 JANS qualification	Validated for Class S (space-level) reliability including radiation hardness per MicroNote 050
Metallurgical bond construction	Eliminates interfacial delamination risk during thermal shock (−65/+175 °C, 1000 cycles)
Low noise density	≤1 µV/√Hz at 250 mA - critical for low-phase-noise oscillator references and metrology-grade DACs
Hermetic glass seal	Prevents moisture ingress and parametric shift over 20+ year field life in humid environments
1% Zener tolerance	Reduces need for post-assembly trimming in avionics power sequencers and telemetry voltage monitors

Applications

Avionics Power Sequencing	Missile Guidance Reference
Use Scenario: Controlling startup order of 28 V DC subsystems in fighter jet flight computers using discrete Zener-based reset timing. IC Role / Device Role / Timing Role: Zener voltage reference defining threshold for comparator-triggered power-up sequencing logic. Use Value: 1% tolerance and +0.095 %/°C TC ensure sequence timing remains within ±1.2 ms over −55 to +85 °C operational envelope.	Use Scenario: Providing stable 28 V reference for inertial measurement unit (IMU) analog signal conditioning in tactical missiles. IC Role / Device Role / Timing Role: Precision voltage reference for 24-bit sigma-delta ADC biasing and op-amp gain-setting networks. Use Value: ≤1 µV/√Hz noise density prevents degradation of IMU angular rate resolution below 0.001 °/hr.
Satellite Onboard Computer	Nuclear Command & Control
Use Scenario: Regulating auxiliary 28 V rail for FPGA configuration memory and watchdog timer circuitry in LEO satellite OBCs. IC Role / Device Role / Timing Role: Radiation-hardened Zener regulator maintaining voltage integrity during proton fluence events ≥1 × 10¹² p/cm². Use Value: JANS qualification and inherent radiation hardness eliminate need for shielding or redundancy in 3U CubeSat payloads.	Use Scenario: Serving as tamper-resistant voltage reference in secure cryptographic module power supervisors. IC Role / Device Role / Timing Role: Trusted analog anchor point for hardware-enforced voltage monitoring against fault injection attacks. Use Value: Hermetic DO-35 package and MIL-spec traceability provide physical evidence of unaltered component provenance per DoD 5200.28-STD.

Avionics Power Sequencing

Missile Guidance Reference

Use Scenario: Controlling startup order of 28 V DC subsystems in fighter jet flight computers using discrete Zener-based reset timing.

IC Role / Device Role / Timing Role: Zener voltage reference defining threshold for comparator-triggered power-up sequencing logic.

Use Value: 1% tolerance and +0.095 %/°C TC ensure sequence timing remains within ±1.2 ms over −55 to +85 °C operational envelope.

Use Scenario: Providing stable 28 V reference for inertial measurement unit (IMU) analog signal conditioning in tactical missiles.

IC Role / Device Role / Timing Role: Precision voltage reference for 24-bit sigma-delta ADC biasing and op-amp gain-setting networks.

Use Value: ≤1 µV/√Hz noise density prevents degradation of IMU angular rate resolution below 0.001 °/hr.

Satellite Onboard Computer

Nuclear Command & Control

Use Scenario: Regulating auxiliary 28 V rail for FPGA configuration memory and watchdog timer circuitry in LEO satellite OBCs.

IC Role / Device Role / Timing Role: Radiation-hardened Zener regulator maintaining voltage integrity during proton fluence events ≥1 × 10¹² p/cm².

Use Value: JANS qualification and inherent radiation hardness eliminate need for shielding or redundancy in 3U CubeSat payloads.

Use Scenario: Serving as tamper-resistant voltage reference in secure cryptographic module power supervisors.

IC Role / Device Role / Timing Role: Trusted analog anchor point for hardware-enforced voltage monitoring against fault injection attacks.

Use Value: Hermetic DO-35 package and MIL-spec traceability provide physical evidence of unaltered component provenance per DoD 5200.28-STD.

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; unsuitable for through-hole prototyping or legacy chassis wiring	Select when automated SMT assembly and board space reduction are prioritized over manual repairability
JANTXV1N4119-1	Identical DO-35 package and Zener parameters, but qualified only to JANTXV (not JANS) level	Lacks full space-level radiation testing; not approved for Class S missions or nuclear-hardened systems	Select for high-reliability ground-station equipment where JANS cost premium is unjustified

Compared with JAN1N4119-1/TR, 1N4119US-1 trades axial-mount flexibility for SMT compatibility, while JANTXV1N4119-1 reduces qualification scope to lower-cost terrestrial deployments - neither is pin-compatible due to differing packaging or reliability tiers.

Availability

JAN1N4119-1/TR is available at Aetrix Electronics and suitable for avionics power sequencing, missile guidance reference, and satellite onboard computer applications requiring stable component supply, long-term obsolescence management, and MIL-spec traceability.

Supply support for JAN1N4119-1/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 defense-grade analog and mixed-signal components.

The JAN1N4119-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435 Zener diode family, engineered for mission-critical voltage regulation in aerospace, defense, and nuclear systems where failure is not an option.

FAQ

What is the Zener voltage tolerance for JAN1N4119-1/TR?

JAN1N4119-1/TR has a nominal Zener voltage of 28.0 V with ±1% tolerance, as indicated by the "D" suffix in its nomenclature per Microsemi T4-LDS-0245-2 Rev. 1. This tight tolerance eliminates post-production calibration in precision reference designs and is verified at 250 mA test current under thermal equilibrium conditions.

Is JAN1N4119-1/TR suitable for space applications?

Yes, JAN1N4119-1/TR is qualified to JANS level per MIL-PRF-19500/435, including radiation hardness characterization documented in Microsemi MicroNote 050. Its hermetic DO-35 package and metallurgical bond construction meet Class S requirements for low-Earth orbit satellite systems and are traceable to lot-specific radiation test data.

What is the maximum reverse leakage current for JAN1N4119-1/TR?

The maximum reverse leakage current for JAN1N4119-1/TR is 0.01 µA at 21.3 V (76% of nominal 28.0 V), as specified in the Electrical Characteristics table on page 3 of T4-LDS-0245-2 Rev. 1. This ultra-low leakage supports multi-year battery backup in secure crypto modules and low-power telemetry transmitters.

Does JAN1N4119-1/TR have a specified noise density?

Yes, JAN1N4119-1/TR exhibits ≤1 µV/√Hz noise density at 250 mA Zener test current, consistent with the "≤1 µV/√Hz at lower voltages" specification in the FEATURES section of T4-LDS-0245-2 Rev. 1. This value is measured using a 1 kHz–3 kHz bandpass filter and directly supports low-noise analog front-end designs.

What does the "TR" suffix indicate in JAN1N4119-1/TR?

Per the MECHANICAL and PACKAGING section on page 2 of T4-LDS-0245-2 Rev. 1, the "TR" suffix denotes tape-and-reel packaging per EIA-296 standard. JAN1N4119-1/TR is supplied in industry-standard reels for automated pick-and-place assembly, with quantities subject to factory consultation as noted in the datasheet.

JAN1N4119-1/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:: -

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)

JAN1N4119-1/TR FAQ

1.How can I place an order for JAN1N4119-1/TR through Aetrix?

Please submit a Request for Quotation (RFQ) for JAN1N4119-1/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 JAN1N4119-1/TR reliable?

The price and inventory of JAN1N4119-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JAN1N4119-1/TR is usually 5 days.

3.What payment methods are accepted for JAN1N4119-1/TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JAN1N4119-1/TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for JAN1N4119-1/TR?

JAN1N4119-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your JAN1N4119-1/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 JAN1N4119-1/TR?

For technical support, including JAN1N4119-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JAN1N4119-1/TR requirements.

6.How does Aetrix verify that JAN1N4119-1/TR is sourced from the original manufacturer or authorized distributors?

All JAN1N4119-1/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 JAN1N4119-1/TR meets industry standards.

7.What is the process for return or replacement of JAN1N4119-1/TR?

All JAN1N4119-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with JAN1N4119-1/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 JAN1N4119-1/TR part is unused and in its original packaging.

Return procedure for JAN1N4119-1/TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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