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Microchip Technology 1N5272BUR-1
- Part No.:
- 1N5272BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5272BUR-1.pdf
- Description:
- DIODE ZENER 110V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,108
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Product details
Overview
1N5272BUR-1 from Microsemi is a surface-mount 110 V, 5% tolerance Zener diode in a hermetically sealed DO-213AA (SOD80/MLL34) MELF glass package, rated for 500 mW steady-state power dissipation, with 750 Ω maximum dynamic impedance at 1.1 mA test current and -65 °C to +175 °C junction temperature range - used for precision voltage regulation in high-reliability industrial power supplies.
For engineers reviewing the 1N5272BUR-1 datasheet, 1N5272BUR-1 pinout, 1N5272BUR-1 application, or 1N5272BUR-1 equivalent, key selection criteria include Zener voltage stability over temperature, low leakage (<0.1 µA at 80 V), radiation hardness, RoHS compliance options, and MIL-PRF-19500 upscreening availability for aerospace-grade builds.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 110 V at 1.1 mA (IZT), exhibiting a positive temperature coefficient of +0.110 %/°C. Its metallurgically bonded construction ensures stable breakdown characteristics under thermal cycling and mechanical stress.
It delivers regulated output across a wide operating current range (IZK = 0.25 mA to IZM ≈ 1.1 mA), with minimal capacitance (typical <1 pF per Figure 3) and non-sensitive ESD performance per MIL-STD-750 Method 1020 - critical for noise-sensitive analog front-ends and high-voltage bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 110 V ±5% at IZT = 1.1 mA - defines precise clamping threshold for overvoltage protection circuits. |
| Power Dissipation (PD) | 0.5 W at TEC < 125 °C - limits continuous thermal load on PCB without forced cooling. |
| Dynamic Impedance (ZZT) | 750 Ω max at IZT = 1.1 mA - determines regulation stiffness and output ripple rejection. |
| Reverse Leakage (IR) | <0.1 µA at VR = 80 V - ensures negligible standby current in high-impedance bias networks. |
| Junction Temp Range | -65 °C to +175 °C - supports operation in extended-temperature industrial, downhole, and avionics environments. |
| Thermal Resistance (RθJA) | 250 °C/W on FR4 (1 oz Cu) - informs derating requirements for ambient temperatures above 50 °C. |
Pinout & Package
DO-213AA (SOD80 / MLL34) MELF glass package: hermetically sealed, metallurgically bonded, cathode band marked on one end cap; terminals are solderable tin-lead or RoHS-compliant matte-tin plating per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal | Connected to lower-potential node during Zener operation; carries forward current up to 200 mA (VF ≤ 1.1 V). |
| Cathode (banded end) | Zener regulation terminal | Connected to higher-potential node; maintains stable 110 V reference when reverse-biased above breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF packaging | Enables long-term reliability in humid, corrosive, or vacuum environments without encapsulation degradation. |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for space-qualified power conditioning without additional shielding. |
| MIL-PRF-19500 upscreening option | Available with MQ/MX/MV/MSP reliability levels - meets screening requirements for military and aerospace applications. |
| Low capacitance (<1 pF) | Minimizes signal coupling and phase shift in RF biasing, timing, and high-frequency feedback paths. |
| ESD insensitivity (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and assembly - reduces BOM count and layout complexity. |
Applications
| High-Voltage Power Supply Regulation | Aerospace DC-DC Converter Reference |
|---|---|
Use Scenario: Stabilizing 110 V rail in isolated flyback converters for industrial motor drives. IC Role / Device Role / Timing Role: Primary Zener reference for TL431-based feedback loop or discrete op-amp error amplifier. Use Value: Maintains ±5% output accuracy over -40 °C to +125 °C ambient with no active compensation required. |
Use Scenario: Providing stable bias voltage for radiation-hardened op-amps in satellite telemetry power modules. IC Role / Device Role / Timing Role: Voltage clamp and reference source in high-reliability analog signal chains. Use Value: Delivers verified radiation tolerance and MIL-PRF-19500 screening compatibility without derating penalties. |
| Downhole Oilfield Instrumentation | Medical X-Ray Generator Bias |
Use Scenario: Regulating sensor excitation voltage in borehole pressure transducers exposed to 175 °C wellbore temperatures. IC Role / Device Role / Timing Role: High-temperature Zener shunt regulator for bridge sensor excitation. Use Value: Operates continuously at +175 °C junction temperature with <0.1 µA leakage - preserves measurement integrity. |
Use Scenario: Generating precise high-voltage bias for photomultiplier tube anodes in diagnostic imaging systems. IC Role / Device Role / Timing Role: Stable 110 V reference for cascaded Cockcroft-Walton multiplier stages. Use Value: Low capacitance and tight voltage tolerance minimize ripple-induced image noise in low-signal-level detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5272B-1 | Axial DO-35 package; same electrical specs but lacks hermetic MELF sealing and MIL-PRF-19500 upscreening path. | Suitable for commercial PCBs where surface-mount density and humidity resistance are not critical. | Select 1N5272B-1 only when through-hole assembly is preferred and environmental ruggedness is secondary. |
| SMF110A | Surface-mount SOD-123 package; 110 V, 1 W rating, 1000 Ω ZZT, wider tolerance (±10%), no radiation hardness data. | Used in cost-sensitive consumer power adapters where single-event latchup immunity is not required. | Choose SMF110A for higher-power margin in non-radiation environments; avoid where MIL-PRF-19500 or radiation tolerance is mandated. |
Compared with 1N5272B-1 and SMF110A, the 1N5272BUR-1 uniquely combines hermetic MELF packaging, radiation hardness, MIL-PRF-19500 upscreening capability, and ultra-low leakage - making it the only option qualified for high-reliability, high-temperature, and radiation-intensive deployments.
Availability
1N5272BUR-1 is available at Aetrix Electronics and suitable for high-reliability power supply regulation, aerospace DC-DC converter reference design, and downhole instrumentation requiring stable component supply across extended temperature and radiation-exposed conditions.
Supply support for 1N5272BUR-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 high-voltage analog components for defense, aerospace, and industrial markets.
The 1N5272BUR-1 belongs to Microsemi's legacy 1N52xxBUR-1 Zener series designed specifically for surface-mount, high-stability voltage regulation in mission-critical systems where hermeticity, temperature resilience, and radiation tolerance are mandatory.
FAQ
What is the Zener voltage tolerance for 1N5272BUR-1?
The 1N5272BUR-1 has a nominal Zener voltage of 110 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance applies at 25 °C with IZT = 1.1 mA and is maintained across its full operating temperature range due to its +0.110 %/°C temperature coefficient.
Does 1N5272BUR-1 support MIL-PRF-19500 screening?
Yes, the 1N5272BUR-1 supports MIL-PRF-19500 upscreening via reliability level suffixes (e.g., MQ, MX, MV, MSP) added to the base part number. The standard commercial version (no prefix) is un-screened, but factory-configured variants meet Class H, K, or N requirements per the specification - confirmed in Microsemi T4-LDS-0232-1 Rev. 1.
What is the maximum reverse leakage current for 1N5272BUR-1?
The 1N5272BUR-1 exhibits a maximum reverse leakage current of 0.1 µA when tested at VR = 80 V and TA = 25 °C. This ultra-low leakage enables use in high-impedance bias networks and precision reference circuits where standby current must be minimized without compromising regulation accuracy.
Is 1N5272BUR-1 RoHS compliant?
Yes, RoHS-compliant versions of 1N5272BUR-1 are available for commercial-grade use, identified by the "e3" suffix (e.g., 1N5272BUR-1e3). These units feature annealed matte-tin plating and comply with Directive 2011/65/EU - however, MIL-PRF-19500 screened variants remain non-RoHS due to tin-lead plating requirements.
What package type does 1N5272BUR-1 use?
The 1N5272BUR-1 uses the DO-213AA package - also known as SOD80 or MLL34 - a hermetically sealed glass MELF (Metal Electrode Leadless Face) surface-mount configuration. Its dimensions are 1.60–1.70 mm diameter (A) and 3.30–3.70 mm length (B), with cathode polarity marked by a single band on one end cap.
1N5272BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 750 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 84 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
1N5272BUR-1 FAQ
1.How can I place an order for 1N5272BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5272BUR-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 1N5272BUR-1 reliable?
The price and inventory of 1N5272BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5272BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5272BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5272BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5272BUR-1?
1N5272BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5272BUR-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 1N5272BUR-1?
For technical support, including 1N5272BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5272BUR-1 requirements.
6.How does Aetrix verify that 1N5272BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5272BUR-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 1N5272BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5272BUR-1?
All 1N5272BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5272BUR-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 1N5272BUR-1 part is unused and in its original packaging.
Return procedure for 1N5272BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5272BUR-1 Tags
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