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Microchip Technology 1N5269BUR-1/TR
- Part No.:
- 1N5269BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5269BUR-1/TR.pdf
- Description:
- DIODE ZENER 87V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,374
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Product details
Overview
1N5269BUR-1/TR from Microsemi is a 87 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD-80/MELF) glass package, designed for precision voltage regulation in power supply feedback loops, reference circuits, and overvoltage protection. It delivers 1.4 mA test current, 370 Ω dynamic impedance at IZT, and operates across -65°C to +175°C junction temperature.
For engineers reviewing the 1N5269BUR-1/TR datasheet, 1N5269BUR-1/TR pinout, 1N5269BUR-1/TR application, or 1N5269BUR-1/TR equivalent, key selection criteria include Zener voltage stability under thermal drift (αVZ = +0.099 %/°C), low leakage (<0.1 µA at 65 V), hermetic glass sealing, and MIL-PRF-19500 upscreening capability for high-reliability designs.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference, operating in the Zener breakdown region with specified regulation at 1.4 mA test current (IZT). Its metallurgically bonded glass construction ensures stable parametric performance across wide temperature extremes and radiation environments.
The 1N5269BUR-1/TR exhibits a positive temperature coefficient (+0.099 %/°C), indicating increasing Zener voltage with rising temperature - critical for thermal compensation design in precision references. Its 370 Ω dynamic impedance (ZZT) at IZT defines regulation sensitivity to load current variation, while <0.1 µA reverse leakage at 65 V (VR) confirms tight blocking behavior below rated VZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 87 V ±5% at 1.4 mA - sets precise regulation point for feedback networks |
| Power Dissipation | 0.5 W - limits continuous thermal load on PCB; derates above 50°C ambient |
| Dynamic Impedance ZZT | 370 Ω at IZT - quantifies voltage shift per mA of load current change |
| Reverse Leakage IR | <0.1 µA at 65 V - ensures minimal standby current in high-impedance bias networks |
| Temp. Coefficient αVZ | +0.099 %/°C - enables predictable thermal drift modeling in reference circuits |
| Junction Temp. Range | -65°C to +175°C - supports operation in aerospace, downhole, and industrial environments |
| Package Type | DO-213AA (SOD-80/MELF) - hermetically sealed glass, RoHS-compliant plating, tape-and-reel (TR) |
Pinout & Package
DO-213AA (SOD-80/MELF) hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode indicated by single band; weight 0.04 g; solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential node during Zener operation |
| Cathode | Zener regulation terminal / voltage reference output | Banded end; connected to regulated rail or error amplifier input in feedback loops |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded glass construction | Enables stable long-term Zener voltage drift & radiation hardness per MicroNote 050 |
| Hermetic DO-213AA packaging | Prevents moisture ingress and parametric shift in humid or harsh environments |
| MIL-PRF-19500 upscreening option | Supports qualification for military/aerospace applications requiring reliability screening |
| Low capacitance (typ. ~1.5 pF) | Minimizes signal coupling and noise injection in high-frequency reference paths |
| ESD robustness (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and assembly |
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 87 V threshold to TL431-like shunt regulator or discrete error amplifier. Use Value: Maintains ±1% output accuracy across -40°C to +85°C ambient due to predictable +0.099 %/°C drift and low dynamic impedance. | Use Scenario: Supplies stable excitation voltage to strain gauge bridges or RTD measurement circuits in factory automation systems. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric analog front-end conditioning. Use Value: Delivers sub-µA leakage and <10 ppm/°C effective drift when combined with matched resistors, enabling 16-bit ADC resolution. |
| Overvoltage Clamp Protection | Aerospace Power Bus Monitor |
Use Scenario: Clamps transient surges on 48 V DC distribution rails in telecom equipment to protect downstream DC-DC converters. IC Role / Device Role / Timing Role: Two-terminal shunt protector triggered above 87 V, diverting excess energy to ground. Use Value: Withstands 260°C reflow and operates to +175°C, ensuring reliability in high-temp chassis environments without derating. | Use Scenario: Monitors 100 V main bus in satellite power management units, triggering latch-off at overvoltage thresholds. IC Role / Device Role / Timing Role: Radiation-hardened voltage threshold detector in fault-safety chain. Use Value: Inherent radiation hardness per MicroNote 050 and MIL-PRF-19500 screening option enable use in LEO missions without additional shielding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5269B-1/TR | Same 87 V rating and DO-35 axial package; higher RθJA (300°C/W vs. 250°C/W); no MIL-PRF-19500 option | Suitable for through-hole prototyping or legacy board upgrades where surface mount is not required | Select when axial footprint compatibility or lower-cost commercial-grade sourcing is prioritized over hermetic MELF reliability |
| BZX85C82-TR | 82 V nominal (±5%), 1.3 W rating, DO-41 package; higher power but 5 V lower Zener voltage; no radiation hardness data | Used in general-purpose industrial power supplies where tighter voltage tolerance is less critical than cost | Choose only if system allows 5 V lower clamping threshold and does not require extended temperature or radiation performance |
Compared with 1N5269B-1/TR and BZX85C82-TR, the 1N5269BUR-1/TR uniquely combines hermetic MELF packaging, MIL-PRF-19500 upscreening eligibility, and verified radiation hardness - making it the sole option for space-grade or high-reliability embedded systems demanding long-term parametric stability.
Availability
1N5269BUR-1/TR is available at Aetrix Electronics and suitable for switch-mode power supply feedback, industrial sensor reference, and overvoltage clamp protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N5269BUR-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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The 1N52xxBUR-1 series was developed to deliver JEDEC-standard Zener regulation in hermetic surface-mount form, targeting defense, space, and industrial applications where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for the 1N5269BUR-1/TR?
The 1N5269BUR-1/TR has a nominal Zener voltage of 87 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance is validated at 25°C with 1.4 mA test current and applies across the full operating temperature range when used within derated power limits.
Does the 1N5269BUR-1/TR support MIL-PRF-19500 screening?
Yes, the 1N5269BUR-1/TR is eligible for upscreening per MIL-PRF-19500 specifications. While the base commercial version is RoHS-compliant and qualified to standard requirements, Microsemi offers enhanced screening levels (e.g., JAN, JANTX, JANTXV) upon request - documented in the part nomenclature guide and confirmed in T4-LDS-0232-1 Rev. 1.
What is the maximum reverse leakage current for the 1N5269BUR-1/TR?
The 1N5269BUR-1/TR specifies a maximum reverse leakage current (IR) of 0.1 µA at VR = 65 V, measured at 25°C. This ultra-low leakage ensures minimal current draw in high-impedance reference divider networks and contributes to stable regulation in battery-powered or low-power sensing applications.
Is the 1N5269BUR-1/TR radiation hardened?
Yes, the 1N5269BUR-1/TR is inherently radiation hard per Microsemi MicroNote 050, a documented characteristic of its metallurgically bonded glass construction and DO-213AA package. This property is process-inherent and does not require additional testing or screening to be valid for total ionizing dose (TID) environments typical in space applications.
What is the thermal resistance junction-to-ambient for the 1N5269BUR-1/TR?
The 1N5269BUR-1/TR has a thermal resistance junction-to-ambient (RθJA) of 250°C/W when mounted on an FR4 PCB with 1 oz copper and the recommended footprint. This value assumes natural convection cooling and defines the temperature rise above ambient per watt dissipated - critical for thermal design in enclosed or high-density layouts.
1N5269BUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 87 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 370 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 68 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
1N5269BUR-1/TR FAQ
1.How can I place an order for 1N5269BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5269BUR-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 1N5269BUR-1/TR reliable?
The price and inventory of 1N5269BUR-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 1N5269BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5269BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5269BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5269BUR-1/TR?
1N5269BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5269BUR-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 1N5269BUR-1/TR?
For technical support, including 1N5269BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5269BUR-1/TR requirements.
6.How does Aetrix verify that 1N5269BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5269BUR-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 1N5269BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5269BUR-1/TR?
All 1N5269BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5269BUR-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 1N5269BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5269BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5269BUR-1/TR Tags
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