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Microchip Technology 1N5232BUR-1
- Part No.:
- 1N5232BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5232BUR-1.pdf
- Description:
- DIODE ZENER 5.6V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,818
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Product details
Overview
1N5232BUR-1 from Microsemi is a 5.6 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD80) MELF glass package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 11 Ω dynamic impedance at 20 mA test current, operates from –65 °C to +175 °C, and exhibits +0.038 %/°C temperature coefficient.
For engineers reviewing the 1N5232BUR-1 datasheet, 1N5232BUR-1 pinout, 1N5232BUR-1 application, or 1N5232BUR-1 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (100 °C/W junction-to-end-cap), low leakage (<5 µA at 2.9 V), hermetic glass sealing, and MIL-PRF-19500 upscreening eligibility.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference, operating in its breakdown region with regulated output across a wide current range (0.25 mA to 125 mA). Its metallurgically bonded glass construction ensures stable long-term Zener voltage and minimal capacitance (~2 pF typical).
It is rated for 0.5 W steady-state dissipation at end-cap temperature <125 °C, with thermal resistance of 100 °C/W to end cap and 250 °C/W to ambient on FR4. The cathode band marking defines polarity: banded end is positive during Zener operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 5.6 V ±5% at 20 mA - sets precise reference level for feedback loops or clamping thresholds |
| Power Dissipation PD | 0.5 W - supports continuous regulation in compact SMT layouts without forced cooling |
| Dynamic Impedance ZZT | 11 Ω at IZT = 20 mA - ensures low output impedance and minimal voltage shift under load variation |
| Reverse Leakage IR | <5 µA at VR = 2.9 V - enables low-error biasing in high-impedance nodes |
| Temp. Coefficient αVZ | +0.038 %/°C - provides predictable, low-drift behavior over industrial temperature range |
| Junction Temp. Range | –65 °C to +175 °C - suitable for under-hood automotive, aerospace, and downhole electronics |
| Package | DO-213AA (SOD80/MELF) - hermetically sealed glass body with tin-lead or RoHS-compliant end-cap plating |
Pinout & Package
DO-213AA (SOD80) MELF glass package: cylindrical, metallurgically bonded, hermetically sealed, with cathode band marking. End-cap terminals are solderable per MIL-STD-750 method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Positive terminal during Zener operation | Connected to higher-potential node; regulates voltage referenced to anode |
| Anode (unbanded end) | Negative terminal during Zener operation | Typically tied to system ground or lower-potential rail; completes regulation path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in harsh environments |
| Metallurgical bonding | Ensures mechanical robustness and thermal stability between silicon die and end caps |
| MIL-PRF-19500 upscreening option | Enables qualification for military/aerospace applications requiring reliability screening |
| Low capacitance (~2 pF) | Minimizes signal coupling and phase shift in RF-adjacent or high-speed reference paths |
| ESD insensitivity (MIL-STD-750 method 1020) | Reduces handling sensitivity and eliminates need for special ESD controls during assembly |
Applications
| Industrial Sensor Signal Conditioning | Automotive Engine Control Unit Reference |
|---|---|
Use Scenario: Stabilizing ADC reference voltage in a 4–20 mA loop transmitter exposed to –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 5.6 V bias for op-amp gain-setting and ADC reference divider. Use Value: Maintains <±0.5% total error over temperature due to +0.038 %/°C TC and low 11 Ω ZZT. | Use Scenario: Clamping microcontroller I/O pins against load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Overvoltage protection element shunting surge energy above 5.6 V to ground. Use Value: Withstands 0.5 W pulse power and operates reliably at +175 °C junction temperature near engine bay components. |
| Medical Instrument Power Supply Monitor | Aerospace Avionics Bias Network |
Use Scenario: Monitoring isolated DC-DC converter output via resistive divider into comparator input. IC Role / Device Role / Timing Role: Precision voltage threshold detector enabling fault flag generation at 5.6 V ±5%. Use Value: Low 5 µA leakage prevents loading of high-impedance divider, preserving measurement accuracy. | Use Scenario: Providing stable bias for radiation-hardened op-amps in satellite telemetry modules. IC Role / Device Role / Timing Role: Radiation-tolerant voltage reference supporting analog front-end calibration. Use Value: Inherent radiation hardness per MicroNote 050 and hermetic seal ensure mission-critical stability in LEO orbit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5232B-1 (DO-35) | Axial-leaded DO-35 package; identical electrical specs but higher RθJA (300 °C/W vs. 250 °C/W) | Suitable for prototyping or through-hole boards; not compatible with automated SMT placement | Select when manual assembly or legacy board compatibility is required |
| BZX55C5V6 (DO-35) | 5% tolerance, 500 mW, but higher ZZT (20 Ω) and wider temp coefficient (±0.05%/°C) | Acceptable for non-critical references; less stable over temperature than 1N5232BUR-1 | Choose for cost-sensitive commercial designs where tighter TC and lower ZZT are not mandatory |
Compared with 1N5232B-1 and BZX55C5V6, the 1N5232BUR-1 offers superior thermal performance in SMT layouts, lower dynamic impedance for improved regulation fidelity, and guaranteed +0.038 %/°C TC-making it preferred for high-reliability, space-constrained, or thermally demanding applications.
Availability
1N5232BUR-1 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive ECU protection, and medical instrument monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5232BUR-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 aerospace-grade analog and discrete components.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator family, engineered for precision voltage reference and overvoltage protection in mission-critical systems where hermeticity, temperature stability, and MIL-spec compliance are essential.
FAQ
What is the Zener voltage tolerance and test current for the 1N5232BUR-1?
The 1N5232BUR-1 has a nominal Zener voltage of 5.6 V with a ±5% tolerance, measured at a test current (IZT) of 20 mA. This tolerance corresponds to the "B" suffix in the part number and is verified per Microsemi's electrical characterization procedure at 25 °C ambient with thermal stabilization.
Does the 1N5232BUR-1 have a cathode band, and how is polarity identified?
Yes, the 1N5232BUR-1 features a visible cathode band on the glass body. During Zener operation, the banded end is the cathode and must be held at a higher potential than the unbanded (anode) end. This marking is consistent across all DO-213AA-packaged devices in the 1N52xxBUR-1 series.
What is the maximum power dissipation and thermal resistance of the 1N5232BUR-1?
The 1N5232BUR-1 is rated for 0.5 W steady-state power dissipation when the end-cap temperature remains below 125 °C. Its thermal resistance is 100 °C/W junction-to-end-cap and 250 °C/W junction-to-ambient on a standard FR4 PCB with recommended footprint, per Microsemi T4-LDS-0232-1 Rev. 1.
Is the 1N5232BUR-1 suitable for high-reliability or military applications?
Yes-the 1N5232BUR-1 supports upscreening per MIL-PRF-19500, and its hermetic DO-213AA package, metallurgical bonding, and radiation hardness (per MicroNote 050) make it appropriate for aerospace, defense, and industrial applications requiring extended temperature operation and long-term parametric stability.
What are the RoHS compliance options for the 1N5232BUR-1?
The 1N5232BUR-1 is available in both RoHS-compliant (e3 suffix) and non-RoHS versions, but RoHS compliance applies only to commercial-grade units. The e3 marking indicates annealed matte-tin end-cap plating compliant with EU Directive 2011/65/EU, while leaded plating remains available for legacy or high-reliability requirements.
1N5232BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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
1N5232BUR-1 FAQ
1.How can I place an order for 1N5232BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5232BUR-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 1N5232BUR-1 reliable?
The price and inventory of 1N5232BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5232BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5232BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5232BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5232BUR-1?
1N5232BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5232BUR-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 1N5232BUR-1?
For technical support, including 1N5232BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5232BUR-1 requirements.
6.How does Aetrix verify that 1N5232BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5232BUR-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 1N5232BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5232BUR-1?
All 1N5232BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5232BUR-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 1N5232BUR-1 part is unused and in its original packaging.
Return procedure for 1N5232BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5232BUR-1 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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