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Microchip Technology 1N5223BUR-1
- Part No.:
- 1N5223BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5223BUR-1.pdf
- Description:
- DIODE ZENER 2.7V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,063
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Product details
Overview
1N5223BUR-1 from Microsemi is a surface-mount 2.7 V, 500 mW Zener diode in DO-213AA (SOD80/MLL34) MELF glass package, rated for ±5% voltage tolerance at 20 mA test current, with 30 Ω dynamic impedance and -0.080 %/°C temperature coefficient - used for precision low-voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N5223BUR-1 datasheet, 1N5223BUR-1 pinout, 1N5223BUR-1 application, or 1N5223BUR-1 equivalent, key selection criteria include its 2.7 V nominal Zener voltage, 500 mW power rating, DO-213AA thermal resistance (RθJA = 250 °C/W), hermetic glass construction, and MIL-PRF-19500 upscreening capability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable 2.7 V output across 0.25–20 mA regulation current (IZK to IZT), with minimal capacitance (<1300 pF typical) and low leakage (≤75 µA at 0.95 V). Its metallurgically bonded glass structure ensures reliability under thermal cycling and radiation exposure.
The device exhibits negative temperature coefficient (-0.080 %/°C), making it suitable for temperature-compensated references when paired with positive-TC components. It is RoHS-compliant (e3 suffix), solderable per MIL-STD-750 method 2026, and rated for junction temperatures from -65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 2.7 V at 20 mA - precise low-voltage reference for analog sensing and LDO feedback. |
| Power Dissipation PD | 0.5 W - supports continuous regulation in compact SMT layouts without forced cooling. |
| Zener Impedance ZZT | 30 Ω at 20 mA - ensures tight voltage regulation under varying load currents. |
| Temp Coefficient αVZ | -0.080 %/°C - enables predictable drift compensation in wide-temperature industrial designs. |
| Reverse Leakage IR | ≤75 µA at 0.95 V - minimizes standby power loss in battery-backed circuits. |
| Package | DO-213AA (SOD80/MLL34) - hermetically sealed MELF glass, compatible with automated pick-and-place. |
| Junction Temp Range | -65 °C to +175 °C - qualified for aerospace, downhole, and high-reliability embedded systems. |
Pinout & Package
DO-213AA (SOD80/MLL34) metallurgically bonded glass MELF package with cathode band marking; terminals are end caps plated with annealed matte tin (RoHS-compliant e3 version) or tin-lead; polarity: banded end is cathode (positive during Zener operation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; forms return path for Zener current during regulation. |
| Cathode (banded end) | Regulated output node | Provides stable 2.7 V relative to anode; must be biased positive w.r.t. anode for breakdown conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or harsh environments. |
| Metallurgical bond interface | Ensures mechanical robustness and thermal stability under repeated thermal cycling (e.g., reflow, operation). |
| MIL-PRF-19500 upscreening option | Supports defense/aerospace programs requiring extended reliability screening beyond commercial grade. |
| Low capacitance (≤1300 pF) | Preserves signal integrity in high-frequency bias networks and RF detector applications. |
| Radiation hardness (per MicroNote 050) | Enables use in space-qualified or nuclear instrumentation where TID tolerance is required. |
Applications
| Industrial Power Supply Feedback | Automotive Sensor Reference |
|---|---|
Use Scenario: Regulating output voltage of isolated DC-DC converters via optocoupler feedback loop. IC Role / Device Role / Timing Role: Zener reference providing stable 2.7 V threshold for TL431 or optocoupler LED drive. Use Value: Maintains ±1% output accuracy over -40 °C to +125 °C ambient with <30 Ω dynamic impedance. |
Use Scenario: Biasing pressure or temperature sensor bridges in engine control units. IC Role / Device Role / Timing Role: Low-drift 2.7 V excitation source for Wheatstone bridge arms. Use Value: Delivers stable excitation despite battery voltage fluctuations and under-hood thermal stress. |
| Medical Instrument Calibration | Test & Measurement Equipment |
Use Scenario: Providing traceable voltage reference in portable ECG amplifier front-ends. IC Role / Device Role / Timing Role: Precision shunt reference stabilizing op-amp bias points. Use Value: Enables <0.1% gain stability over time due to hermetic sealing and radiation-hardened design. |
Use Scenario: Setting threshold levels in bench multimeter auto-ranging circuits. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp protecting ADC input stages. Use Value: Limits transient overshoot without distorting fast-rising test signals (C ≤1300 pF). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5223B | Axial DO-35 package; same 2.7 V/500 mW spec but higher RθJA (300 °C/W); no RoHS e3 option. | Suitable for through-hole prototyping or legacy board upgrades; not SMT-compatible. | Select 1N5223B only if DO-35 footprint exists and reflow compatibility is unnecessary. |
| BZX55C2V7 | Plastic DO-35 package; ±5% tolerance; 500 mW; ZZT = 35 Ω; no MIL-PRF-19500 screening or radiation hardening. | Cost-optimized for consumer electronics; lacks hermetic seal and extended temp range. | Choose BZX55C2V7 for cost-sensitive commercial designs where reliability beyond 125 °C is not required. |
Compared with 1N5223B and BZX55C2V7, the 1N5223BUR-1 delivers superior thermal performance in SMT layouts, guaranteed hermetic reliability, and qualification support for high-integrity systems - justifying its use where long-term stability and environmental resilience are critical.
Availability
1N5223BUR-1 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, and medical instrumentation requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for 1N5223BUR-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 analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series was designed to deliver JEDEC-standard Zener performance in hermetic surface-mount form, enabling drop-in replacement of axial devices while meeting MIL-PRF-19500 screening and extended temperature requirements.
FAQ
What is the Zener voltage tolerance of the 1N5223BUR-1?
The 1N5223BUR-1 has a nominal Zener voltage of 2.7 V with a ±5% tolerance, verified at 20 mA test current (IZT). This tolerance is indicated by the "B" suffix in the part number per Microsemi's nomenclature, and applies across the full operating temperature range of -65 °C to +175 °C.
Is the 1N5223BUR-1 RoHS compliant?
Yes, the 1N5223BUR-1 is RoHS compliant (e3 suffix), with annealed matte-tin plating on its end caps. RoHS compliance is available for commercial-grade units only; military-screened versions (e.g., JAN, JANTX) retain tin-lead plating per specification.
What is the maximum power dissipation of the 1N5223BUR-1 at room temperature?
The 1N5223BUR-1 has a steady-state power dissipation rating of 0.5 W at ambient temperature below 50 °C or end-cap temperature below 125 °C when mounted on FR4 with 1 oz copper. Derating begins above these thresholds per Figure 2 in the datasheet.
Does the 1N5223BUR-1 have a specified capacitance value?
Yes - the 1N5223BUR-1 exhibits typical capacitance of ≤1300 pF at its nominal Zener voltage, as shown in Figure 3 of the datasheet. This low capacitance supports use in high-frequency bias networks and RF-coupled reference paths without signal distortion.
Can the 1N5223BUR-1 be used in radiation-intensive environments?
Yes, the 1N5223BUR-1 is inherently radiation hard per Microsemi MicroNote 050, validated for total ionizing dose (TID) resilience. Its hermetic glass package and metallurgical bonding contribute to this performance, making it suitable for space and nuclear instrumentation applications.
1N5223BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.7 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
1N5223BUR-1 FAQ
1.How can I place an order for 1N5223BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5223BUR-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 1N5223BUR-1 reliable?
The price and inventory of 1N5223BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5223BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5223BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5223BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5223BUR-1?
1N5223BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5223BUR-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 1N5223BUR-1?
For technical support, including 1N5223BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5223BUR-1 requirements.
6.How does Aetrix verify that 1N5223BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5223BUR-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 1N5223BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5223BUR-1?
All 1N5223BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5223BUR-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 1N5223BUR-1 part is unused and in its original packaging.
Return procedure for 1N5223BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5223BUR-1 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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SMAZ12-13-F
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