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Microchip Technology 1N3019BUR-1/TR
- Part No.:
- 1N3019BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF (Glass)
- Datasheet:
-
1N3019BUR-1/TR.pdf
- Description:
- DIODE ZENER 9.1V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,400
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Product details
Overview
1N3019BUR-1/TR from Microsemi is a hermetically sealed, surface-mount MELF (DO-213AB) Zener diode with nominal Zener voltage 9.1 V, 5% tolerance, 1 W power rating, 28 mA test current (IZT), and 6 Ω dynamic impedance (ZZT) at IZT. It operates across –55 °C to +175 °C and serves as a precision voltage reference or regulator in high-reliability analog power rails.
For engineers reviewing the 1N3019BUR-1/TR datasheet, 1N3019BUR-1/TR pinout, 1N3019BUR-1/TR application, or 1N3019BUR-1/TR equivalent, key selection criteria include its MIL-PRF-19500/115 qualification (JAN/JANTX/JANTXV options), low leakage (0.5 µA @ 7.3 V), metallurgically bonded construction for thermal reliability, and RoHS-compliant commercial variants.
Technical Context
This device implements a silicon planar Zener junction in a double-plug glass MELF package, enabling stable breakdown regulation under DC and low-frequency AC conditions. Its metallurgically enhanced internal contact design reduces thermal resistance (RθJEC = 50 °C/W) and improves long-term stability in harsh environments.
The 1N3019BUR-1/TR exhibits a sharp Zener knee with ZZK = 700 Ω at IZK, confirming robust low-current regulation capability. Its temperature coefficient of Zener voltage (αVZ = 0.073 %/°C) and ±5% VZ tolerance support predictable performance across industrial and military operating ranges without external trimming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V ±5% at 28 mA - defines regulated output level with tight tolerance for reference stability |
| Power Dissipation (PD) | 1.0 W - supports continuous regulation in compact PCB layouts without forced cooling |
| Zener Impedance (ZZT) | 6 Ω at IZT = 28 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 0.5 µA max at 7.3 V - enables low-power standby regulation with negligible quiescent loss |
| Junction Temperature Range | –55 °C to +175 °C - qualified for extended-temperature operation in aerospace and downhole systems |
| Thermal Resistance (RθJEC) | 50 °C/W - allows direct end-cap thermal path to heatsink or copper pour for thermal management |
| Forward Voltage (VF) | 1.2 V at 200 mA - confirms standard silicon PN junction behavior for polarity verification |
Pinout & Package
Package: DO-213AB (MELF, LL41) - hermetically sealed glass cylindrical surface-mount package with axial symmetry and cathode band marking. Dimensions: BD = 2.39–2.67 mm, BL = 4.80–5.21 mm, ECT = 0.36–0.56 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection point | Must be biased negative relative to anode to achieve reverse-biased Zener conduction; marking identifies polarity for automated placement |
| Anode (unbanded end) | Zener cathode connection point | Connected to regulated output node; current flows from anode to cathode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Prevents moisture ingress and parametric drift over decades in sealed enclosures |
| Metallurgically bonded junction | Reduces interfacial thermal resistance and improves power cycling endurance vs. solder-bonded alternatives |
| JAN/JANTX/JANTXV qualification | Validated per MIL-PRF-19500/115 for use in defense electronics requiring traceable lot control and screening |
| Low temperature coefficient (0.073 %/°C) | Minimizes VZ drift over wide ambient ranges-critical for unregulated input supplies |
| Non-ESD-sensitive design | Eliminates need for handling precautions or on-board ESD protection circuitry |
Applications
| Industrial Power Monitoring | Aerospace Avionics Reference |
|---|---|
|
Use Scenario: Monitoring 12 V DC bus voltage in programmable logic controller (PLC) backplanes with ±10% input variation. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference for ADC input scaling and overvoltage clamp. Use Value: 9.1 V regulation with 6 Ω dynamic impedance maintains <±0.5% reference accuracy across 1–100 mA load range. |
Use Scenario: Providing stable bias voltage for op-amp comparators in flight control sensor signal conditioning. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known threshold for analog fault detection circuits. Use Value: Hermetic DO-213AB package and –55 °C to +175 °C rating ensure reliability in unheated avionics bays. |
| Military Radio Power Supply | Downhole Oilfield Instrumentation |
|
Use Scenario: Regulating auxiliary 9 V rail in handheld tactical radios exposed to shock, vibration, and thermal cycling. IC Role / Device Role / Timing Role: Voltage clamp protecting RF front-end ICs from transient overvoltage events. Use Value: JANTXV qualification and metallurgically bonded construction withstand 1000+ thermal cycles without parameter shift. |
Use Scenario: Stabilizing reference voltage for pressure transducer excitation in high-temperature wellhead electronics. IC Role / Device Role / Timing Role: High-temperature Zener reference enabling accurate 4–20 mA loop calibration at 150 °C ambient. Use Value: 0.073 %/°C tempco and 175 °C max junction temperature allow operation without derating at 150 °C case temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3019B-1 | Same electrical specs but DO-41 axial-leaded package; no surface-mount capability | Requires through-hole PCB assembly; unsuitable for high-density or automated SMT lines | Select only if legacy board rework or manual prototyping demands axial leads |
| BZX84-C9V1 | Surface-mount SOT-23 package; 9.1 V ±5%, but lower 300 mW rating and higher 15 Ω ZZT | Limited to low-power consumer applications; not qualified to MIL-PRF-19500 | Choose for cost-sensitive commercial designs where military reliability and 1 W dissipation are unnecessary |
Compared with 1N3019B-1 and BZX84-C9V1, the 1N3019BUR-1/TR uniquely combines 1 W power handling, DO-213AB surface-mount compatibility, hermetic sealing, and MIL qualification-making it the only option for high-reliability SMT voltage regulation where thermal and environmental robustness are mandatory.
Availability
1N3019BUR-1/TR is available at Aetrix Electronics and suitable for industrial power monitoring, aerospace avionics reference, and military radio power supply applications requiring stable component supply, long-lifecycle support, and traceable military-grade sourcing.
Supply support for 1N3019BUR-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 analog, mixed-signal, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N3019BUR-1/TR belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for mission-critical voltage regulation where hermeticity, thermal resilience, and long-term parametric stability outweigh cost sensitivity.
FAQ
What is the Zener voltage tolerance and test current for the 1N3019BUR-1/TR?
The 1N3019BUR-1/TR has a nominal Zener voltage of 9.1 V with ±5% tolerance, measured at a Zener test current (IZT) of 28 mA. This current establishes the 0.25 W baseline power condition used for VZ specification and ensures consistent measurement across production lots per JEDEC standards.
Is the 1N3019BUR-1/TR suitable for high-temperature environments?
Yes, the 1N3019BUR-1/TR is rated for junction temperatures from –55 °C to +175 °C and features a thermal resistance (RθJEC) of 50 °C/W. Its hermetic DO-213AB package and metallurgically bonded construction enable reliable operation in downhole, engine bay, and avionics applications where ambient temperatures exceed 125 °C.
Does the 1N3019BUR-1/TR meet RoHS requirements?
RoHS-compliant versions of the 1N3019BUR-1/TR are available for commercial-grade use only, marked with the "e3" suffix. Military-grade variants (JAN/JANTX/JANTXV) retain tin/lead terminations per MIL-STD-750 and are exempt from RoHS compliance requirements.
How does the 1N3019BUR-1/TR compare to the axial-leaded 1N3019B-1?
The 1N3019BUR-1/TR shares identical electrical specifications with the 1N3019B-1 but uses a surface-mount DO-213AB (MELF) package instead of DO-41. This eliminates through-hole assembly, reduces parasitic inductance, and improves thermal coupling to PCB copper-making the 1N3019BUR-1/TR ideal for high-density, high-reliability SMT designs.
What is the maximum reverse leakage current for the 1N3019BUR-1/TR?
The maximum reverse leakage current (IR) for the 1N3019BUR-1/TR is 0.5 µA when tested at 7.3 V (0.8 × VZ). This ultra-low leakage supports energy-efficient regulation in battery-backed systems and precision analog circuits where standby current must remain below 1 µA.
1N3019BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF (Glass)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 6 Ohms
- Current - Reverse Leakage @ Vr:
- 25 µA @ 6.9 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB (MELF, LL41)
1N3019BUR-1/TR FAQ
1.How can I place an order for 1N3019BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3019BUR-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 1N3019BUR-1/TR reliable?
The price and inventory of 1N3019BUR-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 1N3019BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N3019BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3019BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3019BUR-1/TR?
1N3019BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3019BUR-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 1N3019BUR-1/TR?
For technical support, including 1N3019BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3019BUR-1/TR requirements.
6.How does Aetrix verify that 1N3019BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N3019BUR-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 1N3019BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N3019BUR-1/TR?
All 1N3019BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3019BUR-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 1N3019BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N3019BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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