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Microchip Technology 1N5265BUR-1
- Part No.:
- 1N5265BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5265BUR-1.pdf
- Description:
- DIODE ZENER 62V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,473
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Product details
Overview
1N5265BUR-1 from Microsemi is a 62 V, 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF glass package with ±5% tolerance, 185 Ω dynamic impedance at 2 mA test current, and -65 °C to +175 °C operating temperature range, used for precision voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N5265BUR-1 datasheet, 1N5265BUR-1 pinout, 1N5265BUR-1 application, or 1N5265BUR-1 equivalent, key selection criteria include Zener voltage accuracy, low leakage (<0.1 µA at 45 V), thermal resistance (100 °C/W junction-to-end cap), and hermetic metallurgical bonding for high-reliability industrial and aerospace systems.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 62 V at 2.0 mA test current (IZT), exhibiting a positive temperature coefficient of +0.097 %/°C and dynamic impedance of 185 Ω at IZT. It maintains regulation across 0.1–2.0 mA operating current range with minimal capacitance (typical <1.5 pF).
Designed for stable DC voltage clamping and reference generation, it features hermetically sealed glass construction, internal metallurgical bond, and compliance with MIL-PRF-19500 screening options. Its DO-213AA package enables automated placement while maintaining thermal performance up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 62 V at 2.0 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 0.5 W - supports continuous operation at ≤50 °C ambient or ≤125 °C end cap |
| Zener Impedance (ZZT) | 185 Ω at 2.0 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | <0.1 µA at 45 V - ensures negligible error current in high-impedance references |
| Temp. Coefficient (αVZ) | +0.097 %/°C - quantifies drift over temperature; critical for wide-range applications |
| Junction Temp. Range | -65 °C to +175 °C - enables use in extreme environments including avionics and downhole tools |
| Forward Voltage (VF) | 1.1 V max at 200 mA - defines forward conduction behavior during transient overvoltage events |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package with metallurgically bonded end caps; cathode indicated by single band; polarity: banded end is cathode (positive terminal during Zener operation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Non-banded end | Connected to circuit ground or lower potential node in Zener regulator configuration |
| Cathode | Banded end | Connected to regulated output node; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical bonding | Enables reliable thermal transfer and mechanical robustness under thermal cycling stress |
| MIL-PRF-19500 screening option | Supports high-reliability qualification for defense and space programs when specified |
| Low capacitance (<1.5 pF) | Minimizes signal coupling and noise injection in RF-adjacent or high-speed control circuits |
| ESD immunity (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and assembly processes |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference providing stable 62 V threshold for TL431-like comparator input or direct shunt regulation. Use Value: Maintains ±1% output accuracy across line/load/temperature with <0.1 µA leakage minimizing bias error. | Use Scenario: Provides excitation voltage for precision RTD or strain gauge bridges in process instrumentation. IC Role / Device Role / Timing Role: Stable voltage reference source for ratiometric ADC measurement systems requiring low drift. Use Value: +0.097 %/°C tempco and -65 °C to +175 °C range enable calibration stability in uncontrolled cabinet environments. |
| Aerospace Voltage Clamp | Test Equipment Calibration Reference |
Use Scenario: Protects analog front-end inputs in flight data recorders against transients on 28 V aircraft bus. IC Role / Device Role / Timing Role: Shunt clamp limiting surge voltage to 62 V with fast response and no latch-up risk. Use Value: Hermetic DO-213AA package and MIL-PRF-19500 screening support DO-160 Category A/B compliance. | Use Scenario: Serves as traceable voltage standard in benchtop multimeters and calibrators. IC Role / Device Role / Timing Role: Primary Zener reference in cascaded divider networks for 10 V or 6.2 V outputs. Use Value: 5% tolerance and 185 Ω ZZT ensure repeatability and low self-heating error in metrology-grade designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5265B | Same electrical specs but in axial DO-35 package; no metallurgical bond; non-hermetic epoxy body | Limited to commercial-grade PCBs without thermal cycling or humidity exposure requirements | Select when cost sensitivity outweighs reliability needs and through-hole assembly is preferred |
| BZX55C62 | 62 V, ±5%, 500 mW, DO-35; higher ZZT (220 Ω); no MIL-PRF-19500 option; RoHS-compliant only | Suitable for consumer electronics where radiation hardness and extended temperature range are not required | Choose for high-volume commercial production with standard reflow profiles and no military screening |
Compared with 1N5265B and BZX55C62, the 1N5265BUR-1 delivers superior thermal performance (100 °C/W vs. ~300 °C/W), hermetic reliability, and aerospace-grade screening capability-justifying its use where long-term stability and environmental resilience are mandatory.
Availability
1N5265BUR-1 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, aerospace clamping circuits, and test equipment calibration requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1N5265BUR-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 and mixed-signal components for aerospace, defense, and industrial markets.
The 1N5265BUR-1 belongs to Microsemi's legacy 1N52xxBUR-1 Zener series, engineered for precision voltage regulation in mission-critical systems demanding hermetic packaging, radiation tolerance, and extended temperature operation.
FAQ
What is the Zener voltage tolerance for 1N5265BUR-1?
The 1N5265BUR-1 has a nominal Zener voltage of 62 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance applies under standard test conditions at 25 °C with 2.0 mA test current, and remains valid across the full -65 °C to +175 °C operating temperature range when used within derated power limits.
Does 1N5265BUR-1 support MIL-PRF-19500 screening?
Yes, the 1N5265BUR-1 supports up-screening per MIL-PRF-19500 when ordered with appropriate reliability level prefixes (e.g., MQ, MX, MV, MSP). The base commercial version (no prefix) does not include screening, but the device's metallurgically bonded DO-213AA construction and hermetic glass package provide the foundational reliability needed for such qualification.
What is the maximum reverse leakage current for 1N5265BUR-1?
The maximum reverse leakage current for 1N5265BUR-1 is 0.1 µA at 45 V (VR = 45 V), measured at 25 °C. This ultra-low leakage ensures minimal error contribution in high-impedance reference circuits and preserves accuracy in battery-powered or low-power sensor systems where standby current must be tightly controlled.
Can 1N5265BUR-1 be used in reflow soldering processes?
Yes, the 1N5265BUR-1 is qualified for reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its DO-213AA package and tin-lead or RoHS-compliant matte-tin plating ensure reliable wetting and joint integrity under standard lead-free or SnPb reflow profiles used in surface-mount assembly.
How does the temperature coefficient of 1N5265BUR-1 affect its performance?
The 1N5265BUR-1 has a positive temperature coefficient of +0.097 %/°C, meaning its Zener voltage increases by approximately 60 mV per 10 °C rise above 25 °C. This predictable drift allows designers to compensate in feedback networks or select complementary components to achieve net-zero temperature drift in precision reference applications.
1N5265BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 62 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 185 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 47 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
1N5265BUR-1 FAQ
1.How can I place an order for 1N5265BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5265BUR-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 1N5265BUR-1 reliable?
The price and inventory of 1N5265BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5265BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5265BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5265BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5265BUR-1?
1N5265BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5265BUR-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 1N5265BUR-1?
For technical support, including 1N5265BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5265BUR-1 requirements.
6.How does Aetrix verify that 1N5265BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5265BUR-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 1N5265BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5265BUR-1?
All 1N5265BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5265BUR-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 1N5265BUR-1 part is unused and in its original packaging.
Return procedure for 1N5265BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5265BUR-1 Tags
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