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Microchip Technology 1N3022BUR-1/TR
- Part No.:
- 1N3022BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AB, MELF
- Datasheet:
-
1N3022BUR-1/TR.pdf
- Description:
- DIODE ZENER 12V 1W DO213AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,098
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Product details
Overview
1N3022BUR-1/TR from Microsemi is a surface-mount glass Zener diode in DO-213AB (MELF) package, rated for 1.5 W power dissipation at 25°C, with nominal Zener voltage of 12 V ±5% (suffix "B"), 21 mA test current, 9 Ω dynamic impedance at IZT, and maximum reverse leakage of 1.0 μA at 9.1 V. It serves as a precision voltage reference and overvoltage clamp in high-reliability power supply feedback loops.
For engineers reviewing the 1N3022BUR-1/TR datasheet, 1N3022BUR-1/TR pinout, 1N3022BUR-1/TR application, or 1N3022BUR-1/TR equivalent, key selection criteria include its hermetically sealed glass construction, -65°C to +175°C operating temperature range, low thermal resistance (40°C/W junction-to-end-cap), tight voltage tolerance, and RoHS-compliant "e3" variant availability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation across wide current (21 mA IZT to 120 mA IZM) and temperature (-65°C to +175°C) ranges. Its metallurgically enhanced internal contact design reduces thermal resistance and improves long-term reliability under thermal cycling stress.
The DO-213AB MELF package provides low parasitic inductance and capacitance (typical CJ specified per Figure 2), making it suitable for high-frequency regulation and noise-sensitive analog circuits. Its cathode band marking and tin-lead or matte-tin plating ensure unambiguous polarity identification and solderability per MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 12 V ±5% at 21 mA - defines regulated output voltage with tight tolerance for feedback accuracy in SMPS. |
| Power Dissipation (PD) | 1.5 W at 25°C end-cap temperature - supports robust transient energy absorption without derating in compact layouts. |
| Zener Impedance (ZZT) | 9 Ω at 21 mA - ensures minimal output voltage variation under load changes in reference applications. |
| Reverse Leakage Current (IR) | 1.0 μA max at 9.1 V - enables low-power standby operation with negligible quiescent current penalty. |
| Operating Temperature Range | -65°C to +175°C - qualified for aerospace, downhole, and military systems requiring extreme environmental resilience. |
| Thermal Resistance (RθJC) | 40°C/W junction-to-end-cap - allows direct thermal path to heatsink or copper pour for sustained 1.5 W operation. |
| Forward Voltage (VF) | 1.2 V max at 200 mA - supports bidirectional protection use cases when forward-biased during fault conditions. |
Pinout & Package
Package: DO-213AB (MELF) - hermetically sealed glass cylindrical body with axial symmetry; cathode identified by single black band; terminals are metallized end caps; RoHS-compliant matte-tin or tin-lead plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / Zener cathode reference | Connected to lower-potential node in regulation circuit; must be held ≤9.1 V to avoid leakage-limited conduction. |
| Cathode (banded end) | Zener breakdown terminal / voltage reference output | Provides stable 12 V reference when reverse-biased; polarity must be observed to prevent device damage. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and intermetallic degradation, enabling >20-year operational life in sealed enclosures. |
| Metallurgically enhanced contact design | Reduces thermal resistance by 30% vs. standard DO-13 equivalents, improving power handling in confined PCB areas. |
| 1.5 W surface-mount rating | Delivers 50% higher power than legacy JEDEC 1N3022B (1.0 W), enabling fewer devices per rail in multi-output supplies. |
| Nonsensitive to ESD | No external protection required during handling or assembly-reduces BOM count and layout complexity. |
| Radiation-hardened per MicroNote 050 | Qualified for total ionizing dose (TID) >100 krad(Si), supporting satellite power bus monitoring and avionics. |
Applications
| Switch-Mode Power Supply Feedback | High-Temperature Sensor Biasing |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Precision 12 V reference for TL431-like comparator input or error amplifier biasing. Use Value: Tight ±5% VZ tolerance and low 9 Ω ZZT minimize output voltage drift across line/load/temperature. |
Use Scenario: Providing stable bias current to RTD or thermistor signal conditioning circuits in oil/gas downhole tools. IC Role / Device Role / Timing Role: Voltage reference and overvoltage clamp protecting ADC front-end in 175°C-rated instrumentation. Use Value: Guaranteed operation up to +175°C ambient and hermetic seal prevent parameter shift in corrosive, high-pressure environments. |
| Aerospace Power Bus Monitoring | Industrial PLC Input Protection |
Use Scenario: Clamping transients on 28 V DC aircraft bus before sensitive telemetry interface ICs. IC Role / Device Role / Timing Role: Transient voltage suppressor with fast response and radiation tolerance per MIL-PRF-19500/115 Class V. Use Value: 1.5 W rating absorbs 100-ns spikes without degradation; MQ/MX-prefix variants available for full screening. |
Use Scenario: Protecting 24 V digital input channels against field-wiring surges and inductive kickback in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed ahead of optocoupler input stage. Use Value: Low 1.0 μA leakage at 9.1 V prevents false triggering; DO-213AB footprint minimizes board space vs. axial DO-13 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N3022B (DO-13) | Same electrical specs but axial leaded DO-13 package; 1.0 W rating; no RoHS "e3" option standard; higher thermal resistance (60°C/W). | Requires through-hole mounting and larger PCB area; unsuitable for high-density SMT lines or reflow-only assembly. | Select only if legacy through-hole compatibility or MIL-PRF-19500/115 qualification without surface-mount requirement is mandatory. |
| BZX84-C12LT1G (ON Semiconductor) | SOT-23 package; 350 mW rating; ±5% tolerance; 30 Ω ZZT; -65°C to +150°C range; RoHS-compliant standard. | Limited to low-power logic-level clamping; insufficient for 1.5 W transient absorption or high-temp industrial use. | Choose only for cost-sensitive consumer electronics where 12 V reference stability and thermal performance are secondary to footprint size. |
Compared with 1N3022B and BZX84-C12LT1G, the 1N3022BUR-1/TR uniquely combines 1.5 W SMT power handling, hermetic MELF reliability, and extended +175°C operation-making it irreplaceable in aerospace, downhole, and high-reliability industrial power systems.
Availability
1N3022BUR-1/TR is available at Aetrix Electronics and suitable for switch-mode power supplies, high-temperature sensor interfaces, aerospace bus protection, and industrial PLC input stages requiring stable component supply with guaranteed long-term continuity.
Supply support for 1N3022BUR-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets, emphasizing radiation hardness, extended temperature operation, and hermetic packaging.
The 1N3022BUR-1/TR belongs to Microsemi's legacy glass Zener diode family engineered for mission-critical voltage regulation where failure is not an option-targeting applications demanding >100 krad TID tolerance, -65°C to +175°C operation, and hermetic integrity.
FAQ
What is the Zener voltage tolerance for 1N3022BUR-1/TR?
The "B" suffix in 1N3022BUR-1/TR indicates a nominal Zener voltage of 12 V with ±5% tolerance at 21 mA test current. This tighter tolerance enables precise feedback control in regulated power supplies compared to standard ±20% variants. The 1N3022BUR-1/TR achieves this via post-trim screening during manufacturing, ensuring consistent regulation across production lots.
Is 1N3022BUR-1/TR compatible with lead-free reflow processes?
Yes, the 1N3022BUR-1/TR is RoHS-compliant (e3 suffix) and qualified for lead-free reflow with peak solder temperature up to 260°C for 10 seconds. Its matte-tin plating meets MIL-STD-750 Method 2026 for solderability, and the hermetic glass body withstands thermal shock without cracking or seal degradation during standard JEDEC J-STD-020 profiles.
How does the DO-213AB package of 1N3022BUR-1/TR improve thermal performance over DO-13?
The DO-213AB package of 1N3022BUR-1/TR achieves 40°C/W junction-to-end-cap thermal resistance versus 60°C/W for the DO-13 version, due to optimized slug geometry and metallurgical contact enhancement. This allows the 1N3022BUR-1/TR to sustain 1.5 W continuously at lower junction temperatures, extending lifetime in thermally constrained layouts.
Can 1N3022BUR-1/TR be used for bidirectional transient suppression?
No-the 1N3022BUR-1/TR is a unidirectional Zener diode optimized for reverse-bias regulation. Its forward voltage is 1.2 V max at 200 mA, but it lacks symmetric clamping characteristics. For bidirectional protection, discrete back-to-back 1N3022BUR-1/TR units or purpose-built TVS arrays are required-not inherent to the 1N3022BUR-1/TR device itself.
What screening options are available for 1N3022BUR-1/TR in high-reliability programs?
MIL-PRF-19500/115 screening is available for 1N3022BUR-1/TR via prefix modifiers: MX for JANTX, MV for JANTXV, and MSP for JANS levels. These require ordering as MX1N3022BUR-1/TR, MV1N3022BUR-1/TR, or MSP1N3022BUR-1/TR. Each includes rigorous burn-in, temperature cycling, and parametric testing per military specification.
1N3022BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AB, MELF
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 9 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 9.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AB
1N3022BUR-1/TR FAQ
1.How can I place an order for 1N3022BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N3022BUR-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 1N3022BUR-1/TR reliable?
The price and inventory of 1N3022BUR-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 1N3022BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N3022BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N3022BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N3022BUR-1/TR?
1N3022BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N3022BUR-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 1N3022BUR-1/TR?
For technical support, including 1N3022BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N3022BUR-1/TR requirements.
6.How does Aetrix verify that 1N3022BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N3022BUR-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 1N3022BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N3022BUR-1/TR?
All 1N3022BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N3022BUR-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 1N3022BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N3022BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N3022BUR-1/TR Tags
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