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Microchip Technology 1N4119UR-1/TR
- Part No.:
- 1N4119UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4119UR-1/TR.pdf
- Description:
- DIODE ZENER 28V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,926
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Product details
Overview
1N4119UR-1/TR from Microsemi is a glass-encapsulated, hermetically sealed, surface-mount Zener diode in DO-213AA (SOD-80/MLL34) MELF package, rated for 0.5 W steady-state power dissipation, with nominal Zener voltage of 28 V at 250 mA test current, ±5% tolerance, and maximum Zener impedance of 200 Ω at IZT. It operates across –65 °C to +175 °C and is used for precision voltage regulation in aerospace power conditioning circuits.
For engineers reviewing the 1N4119UR-1/TR datasheet, 1N4119UR-1/TR pinout, 1N4119UR-1/TR application, or 1N4119UR-1/TR equivalent, key selection criteria include its 28 V Zener voltage, 200 Ω dynamic impedance, 0.01 μA reverse leakage at 21.28 V, radiation-hardened construction, and RoHS-compliant e3 marking with TR tape-and-reel packaging.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown, with Zener regulation achieved via controlled avalanche and Zener mechanisms depending on voltage range. Its DO-213AA glass MELF package provides hermetic sealing, low parasitic capacitance (typ. <14 pF), and inherent radiation hardness per MicroNote 050.
It delivers stable regulation over wide temperature and current ranges: thermal resistance is 150 °C/W junction-to-end-cap and 300 °C/W junction-to-ambient on FR4; forward voltage is 1.1 V at 200 mA; and noise density is 14 μV/√Hz at 25 °C with 250 mA IZT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28 V at IZT = 250 mA - defines precise regulation point for feedback loops and reference generation |
| Zener Impedance ZZT | 200 Ω max at IZT - determines output voltage stability under load transients |
| Reverse Leakage IR | 0.01 μA max at VR = 21.28 V - ensures minimal quiescent current in high-impedance bias networks |
| Power Dissipation | 0.5 W at TEC < 100 °C - sets maximum continuous power handling on standard FR4 PCBs |
| Operating Temp | –65 °C to +175 °C - enables use in extended-temperature avionics and downhole electronics |
| Temp Coefficient αVZ | +0.085 %/°C - quantifies voltage drift per degree, critical for high-stability references |
| Noise Density | 14 μV/√Hz typical - impacts signal integrity in low-noise analog front-ends and sensor interfaces |
Pinout & Package
DO-213AA (SOD-80/MLL34) glass MELF package: hermetically sealed cylindrical body with tin-lead or matte-tin end caps; cathode indicated by single band; polarity: banded end positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower-potential node in reverse-biased Zener configuration |
| Cathode | Banded end | Connected to regulated voltage node; carries full Zener current and defines reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass MELF Package | DO-213AA construction ensures long-term reliability and moisture resistance in harsh environments |
| Radiation Hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-grade applications |
| Low Capacitance | Typical <14 pF - minimizes signal coupling and phase shift in RF and high-speed timing circuits |
| ESD Robustness | Nonsensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in board layout |
| Tape-and-Reel Packaging | TR suffix denotes EIA-481-1-A compliant 12 mm tape, 2000 units per 7-inch reel - supports automated SMT assembly |
Applications
| Aerospace Power Conditioning | Downhole Instrumentation |
|---|---|
|
Use Scenario: Regulating reference voltage for DC-DC converter feedback in satellite power management units. IC Role / Device Role / Timing Role: Two-terminal Zener voltage reference providing stable 28 V setpoint for error amplifier input. Use Value: Maintains ±0.085 %/°C drift and 200 Ω impedance across –65 °C to +175 °C, ensuring closed-loop stability in orbital thermal cycling. |
Use Scenario: Biasing high-temperature op-amps and ADCs in oil-well logging tools exposed to >150 °C ambient. IC Role / Device Role / Timing Role: Precision shunt regulator establishing clean 28 V rail for analog signal chains. Use Value: Hermetic DO-213AA package prevents parameter shift due to moisture ingress at elevated temperatures and pressures. |
| Military Avionics Reference | Radiation-Hardened Sensor Interface |
|
Use Scenario: Generating stable reference for analog-to-digital conversion in fighter jet flight control systems. IC Role / Device Role / Timing Role: Low-noise (14 μV/√Hz) Zener source feeding precision voltage dividers and comparator thresholds. Use Value: Radiation hardness and MIL-STD-750 ESD immunity eliminate field failures in high-G, high-radiation operational profiles. |
Use Scenario: Providing regulated excitation voltage for piezoresistive pressure sensors in nuclear reactor monitoring systems. IC Role / Device Role / Timing Role: Shunt-regulated 28 V supply isolating sensitive sensor outputs from supply ripple. Use Value: 0.01 μA reverse leakage at 21.28 V preserves microamp-level sensor bias accuracy over decades of service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4119UR-1/TR (Microsemi) | DO-213AA glass MELF, 28 V, 0.5 W, 200 Ω ZZT, +0.085 %/°C αVZ | Hermetic, radiation-hardened, military-qualified (-1 suffix option) | Preferred where radiation tolerance, long-term hermeticity, or JAN/JANTXV qualification is required |
| BZX84-C27LT1G (ON Semiconductor) | SOT-23 plastic package, 27 V, 300 mW, 100 Ω ZZT, ±5% tolerance, –65 °C to +150 °C | Lower cost, commercial-grade, higher temp coefficient (±0.07 %/°C), no radiation hardening | Appropriate for non-critical industrial controls where size and cost outweigh environmental robustness |
Compared with BZX84-C27LT1G and 1N4752A (28 V, DO-41), the 1N4119UR-1/TR offers superior temperature range, hermetic reliability, and radiation hardness - critical for aerospace and defense deployments - while trading off higher cost and larger footprint than SOT-23 alternatives.
Availability
1N4119UR-1/TR is available at Aetrix Electronics and suitable for aerospace power conditioning, downhole instrumentation, military avionics reference, and radiation-hardened sensor interface applications requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for 1N4119UR-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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and high-temperature analog and mixed-signal components.
The 1N4119UR-1/TR belongs to Microsemi's legacy DO-213AA glass Zener family, designed specifically for mission-critical voltage regulation in aerospace, defense, and energy exploration systems demanding hermeticity and extreme environmental resilience.
FAQ
What is the Zener voltage and tolerance of the 1N4119UR-1/TR?
The 1N4119UR-1/TR has a nominal Zener voltage of 28 V at 250 mA test current with a standard tolerance of ±5%. This value is measured under thermal equilibrium at 25 °C with end-cap terminations, per JEDEC registration and Microsemi's published electrical characteristics table.
Does the 1N4119UR-1/TR have radiation-hardened properties?
Yes, the 1N4119UR-1/TR is inherently radiation-hardened as documented in Microsemi MicroNote 050. Its DO-213AA glass MELF construction and silicon process provide tolerance to total ionizing dose (TID) and single-event effects, making it suitable for space and nuclear environments.
What does the "-1" suffix indicate in 1N4119UR-1/TR?
The "-1" suffix in 1N4119UR-1/TR denotes internal metallurgical bond construction, which enhances mechanical robustness and thermal performance. This variant supports JAN, JANTX, and JANTXV military qualifications and is detailed in a separate Microsemi data sheet.
What is the maximum power dissipation and derating behavior of the 1N4119UR-1/TR?
The 1N4119UR-1/TR is rated for 0.5 W steady-state power dissipation at end-cap temperature <100 °C or ambient <25 °C on FR4 with 1 oz copper. Derating follows a linear curve: power decreases to zero at 175 °C ambient, with thermal resistance of 150 °C/W junction-to-end-cap.
Is the 1N4119UR-1/TR RoHS compliant?
Yes, the "e3" suffix in 1N4119UR-1/TR confirms RoHS compliance per EU Directive 2011/65/EU. The device uses annealed matte-tin plating on end caps and meets solderability requirements per MIL-STD-750 Method 2026.
1N4119UR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4119UR-1/TR FAQ
1.How can I place an order for 1N4119UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4119UR-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 1N4119UR-1/TR reliable?
The price and inventory of 1N4119UR-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 1N4119UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4119UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4119UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4119UR-1/TR?
1N4119UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4119UR-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 1N4119UR-1/TR?
For technical support, including 1N4119UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4119UR-1/TR requirements.
6.How does Aetrix verify that 1N4119UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4119UR-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 1N4119UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4119UR-1/TR?
All 1N4119UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4119UR-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 1N4119UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4119UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4119UR-1/TR Tags
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