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Microchip Technology 1N5224BUR-1
- Part No.:
- 1N5224BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5224BUR-1.pdf
- Description:
- DIODE ZENER 2.8V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,832
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Product details
Overview
1N5224BUR-1 from Microsemi is a 2.8 V, ±5% tolerance, 500 mW surface-mount Zener diode in a hermetically sealed DO-213AA (SOD80/MLL34) MELF package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 30 Ω dynamic impedance at 20 mA test current, operates from –65 °C to +175 °C, and exhibits minimal capacitance for stable high-frequency performance.
For engineers reviewing the 1N5224BUR-1 datasheet, 1N5224BUR-1 pinout, 1N5224BUR-1 application, or 1N5224BUR-1 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (100 °C/W junction-to-end-cap), reverse leakage (<75 µA at 0.95 V), RoHS compliance option (e3 suffix), and MIL-PRF-19500 upscreening availability.
Technical Context
This device functions as a two-terminal, silicon-based Zener regulator operating in reverse breakdown, with cathode polarity marked by a band. Its metallurgically bonded glass construction ensures hermetic sealing and radiation hardness per MicroNote 050, while its DO-213AA package enables automated placement and high-reliability soldering at 260 °C for 10 seconds.
Electrical behavior is defined at 25 °C with 20 mA test current (IZT); temperature coefficient is –0.080 %/°C, and dynamic impedance (ZZT) is specified at 30 Ω - critical for maintaining regulation stability under varying load and temperature conditions across industrial and aerospace-grade designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.8 V ±5% at 20 mA - sets precise reference level for feedback loops and bias networks |
| Power Dissipation (PD) | 0.5 W - limits continuous regulation capability; derates above 50 °C ambient or 125 °C end cap |
| Dynamic Impedance (ZZT) | 30 Ω at IZT = 20 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | <75 µA at VR = 0.95 V - ensures low quiescent current in standby or sensing circuits |
| Temp Coefficient (αVZ) | –0.080 %/°C - quantifies voltage drift over temperature; enables compensation design |
| Junction Temp Range | –65 °C to +175 °C - supports operation in extreme environments without derating |
| Forward Voltage (VF) | ≤1.1 V at 200 mA - defines conduction threshold when used in forward-biased protection paths |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package with metallurgically bonded construction, hermetically sealed, cathode indicated by single band. End-cap terminals are tin-lead or RoHS-compliant matte-tin plated for solderability per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential during reverse-bias operation; defines polarity for voltage clamping |
| Anode (unbanded end) | Reference/ground terminal | Serves as circuit common; establishes reference node for regulated output |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF packaging | Enables long-term reliability in humid, corrosive, or high-vacuum environments without encapsulation degradation |
| Metallurgical bonding | Eliminates interfacial delamination risk under thermal cycling, improving power-cycle endurance |
| Radiation hardness | Inherently resistant to total ionizing dose (TID) per Microsemi MicroNote 050 - suitable for space-qualified systems |
| MIL-PRF-19500 upscreening | Available with MQ/MX/MV/MSP reliability levels - meets military screening requirements for burn-in, life test, and parametric verification |
| Low capacitance | Typical <2 pF (per Figure 3) - preserves signal integrity in RF biasing and fast-switching clamp applications |
Applications
| Reference Voltage Generation | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 2.8 V reference for ADCs, DACs, and op-amp comparators in data acquisition modules. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise DC bias point. Use Value: ±5% initial tolerance and –0.080 %/°C tempco enable sub-10 mV drift over –40 °C to +85 °C industrial range. | Use Scenario: Clamping input lines of microcontrollers or sensors against ESD or surge events exceeding 3.3 V rail. IC Role / Device Role / Timing Role: Passive shunt clamp activated above 2.8 V breakdown threshold. Use Value: Low 30 Ω dynamic impedance ensures rapid voltage clamping with minimal overshoot during transient events. |
| Current Source Biasing | Temperature-Stable Oscillator Bias |
Use Scenario: Setting bias current for JFET or bipolar transistor amplifiers in instrumentation front-ends. IC Role / Device Role / Timing Role: Constant-current sink via series resistor and Zener-regulated voltage drop. Use Value: 0.5 W power rating supports up to ~178 mA bias current (at 2.8 V), enabling robust analog gain staging. | Use Scenario: Supplying temperature-compensated bias to crystal oscillator sustaining amplifiers in timing modules. IC Role / Device Role / Timing Role: Regulated voltage source stabilizing amplifier operating point against thermal drift. Use Value: Negative tempco (–0.080 %/°C) counterbalances positive TC of oscillator transistors, reducing overall frequency drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5224B-1 | Same 2.8 V, ±5%, 0.5 W rating but in axial DO-35 (DO-204AH) package - no surface-mount capability | Requires through-hole PCB assembly; unsuitable for high-density SMT layouts | Select 1N5224B-1 only when legacy through-hole manufacturing or manual prototyping is required |
| BZX55C2V7 | 2.7 V nominal (not 2.8 V), ±5%, 0.5 W, DO-35 package - different voltage grade and non-MELF form factor | Lacks radiation hardness, MIL-PRF-19500 screening, and hermetic glass construction | Choose BZX55C2V7 for cost-sensitive commercial applications where radiation tolerance and military screening are unnecessary |
Compared with 1N5224B-1 and BZX55C2V7, the 1N5224BUR-1 uniquely combines SMT compatibility, hermetic MELF packaging, radiation hardness, and MIL-PRF-19500 upscreening - making it the only choice for high-reliability, space-constrained, mission-critical regulation tasks.
Availability
1N5224BUR-1 is available at Aetrix Electronics and suitable for precision reference generation, overvoltage clamping, and analog biasing applications requiring stable component supply across aerospace, industrial control, and medical electronics programs.
Supply support for 1N5224BUR-1 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 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator product line, engineered specifically for applications demanding hermetic sealing, extended temperature operation, and compliance with military screening standards.
FAQ
What is the Zener voltage tolerance of the 1N5224BUR-1?
The 1N5224BUR-1 has a nominal Zener voltage of 2.8 V with a tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance is guaranteed at 25 °C with 20 mA test current (IZT), and applies across the full operating temperature range when combined with its –0.080 %/°C temperature coefficient.
Is the 1N5224BUR-1 RoHS compliant?
Yes, the 1N5224BUR-1 is available in RoHS-compliant versions marked with the "e3" suffix (e.g., 1N5224BUR-1e3), using annealed matte-tin plating on end caps. RoHS compliance is offered for commercial-grade units only; military-screened variants (MQ/MX/MV/MSP) retain tin-lead terminations per specification.
What package type does the 1N5224BUR-1 use?
The 1N5224BUR-1 uses the DO-213AA package - also known as SOD80 or MLL34 - a hermetically sealed glass MELF (Metal Electrode Leadless Face) surface-mount package. Its dimensions are 1.60–1.70 mm diameter and 3.30–3.70 mm length, with cathode identified by a single band.
Can the 1N5224BUR-1 be used in high-reliability aerospace applications?
Yes, the 1N5224BUR-1 supports high-reliability aerospace use via optional MIL-PRF-19500 upscreening (MQ, MX, MV, MSP levels). Its inherent radiation hardness per MicroNote 050, hermetic glass construction, and –65 °C to +175 °C junction temperature range make it suitable for satellite power conditioning and avionics subsystems.
What is the maximum reverse leakage current for the 1N5224BUR-1?
The maximum reverse leakage current (IR) for the 1N5224BUR-1 is 75 µA at a reverse voltage (VR) of 0.95 V, measured at 25 °C. This low leakage ensures minimal parasitic loading in high-impedance reference and sensing circuits, preserving accuracy in battery-powered or low-power systems.
1N5224BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.8 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 75 µA @ 1 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
1N5224BUR-1 FAQ
1.How can I place an order for 1N5224BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5224BUR-1 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 1N5224BUR-1 reliable?
The price and inventory of 1N5224BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5224BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5224BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5224BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5224BUR-1?
1N5224BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5224BUR-1 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 1N5224BUR-1?
For technical support, including 1N5224BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5224BUR-1 requirements.
6.How does Aetrix verify that 1N5224BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5224BUR-1 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 1N5224BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5224BUR-1?
All 1N5224BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5224BUR-1, 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 1N5224BUR-1 part is unused and in its original packaging.
Return procedure for 1N5224BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5224BUR-1 Tags
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