My Inquiry
My Account
Microchip Technology 1N5276BUR-1
- Part No.:
- 1N5276BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5276BUR-1.pdf
- Description:
- DIODE ZENER 150V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,011
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1N5276BUR-1 from Microsemi is a 150 V, 0.5 W surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF glass package, rated for ±5% voltage tolerance at 20 mA test current, with 1500 Ω dynamic impedance and +0.110 %/°C temperature coefficient - used for precision voltage reference and overvoltage protection in power supply feedback loops.
For engineers reviewing the 1N5276BUR-1 datasheet, 1N5276BUR-1 pinout, 1N5276BUR-1 application, or 1N5276BUR-1 equivalent, key selection criteria include Zener voltage stability across temperature, low leakage (<0.1 µA @ 108 V), hermetic glass packaging for reliability, and compatibility with automated SMT assembly per EIA-481-B tape-and-reel.
Technical Context
This device operates in reverse-biased breakdown mode to maintain stable 150 V regulation across 0.85 mA to 114 mA operating current range, with thermal resistance junction-to-ambient of 250 °C/W on FR4 board. Its metallurgically bonded construction ensures mechanical robustness and long-term parameter stability under thermal cycling.
The 1N5276BUR-1 exhibits minimal capacitance (~1.5 pF typical), low forward voltage (≤1.1 V @ 200 mA), and inherent radiation hardness per MicroNote 050 - making it suitable for space-constrained, high-reliability analog circuits where ESD immunity and low noise are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 150 V ±5% at 20 mA - defines precise regulation point for feedback networks |
| Power Dissipation PD | 0.5 W - limits continuous thermal load on PCB without forced cooling |
| Zener Impedance ZZT | 1500 Ω @ IZT = 20 mA - determines output voltage variation under load changes |
| Reverse Leakage IR | <0.1 µA @ 108 V - ensures negligible error current in high-impedance reference paths |
| Temp. Coefficient αVZ | +0.110 %/°C - quantifies voltage drift over -65°C to +175°C operating range |
| Package | DO-213AA (SOD80/MLL34) MELF - hermetically sealed glass, RoHS-compliant plating, 0.04 g mass |
| Forward Voltage VF | ≤1.1 V @ 200 mA - enables use as clamp or rectifier in dual-role circuits |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed, cylindrical body with tin-lead or matte-tin end-cap terminations; cathode indicated by single band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection point | Applied positive bias relative to anode to enter breakdown; marks regulated output node |
| Anode (unbanded end) | Zener cathode connection point | Reference ground or return path; reverse-bias polarity must be maintained for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bond construction | Eliminates interfacial delamination risk under thermal stress, ensuring long-term Zener voltage stability |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift in humid or harsh industrial environments |
| MIL-PRF-19500 up-screening option | Enables qualification for military/aerospace applications requiring extended reliability screening |
| Low capacitance (1.5 pF typ.) | Minimizes signal coupling and phase distortion in RF-adjacent or high-speed control circuits |
| Radiation hardness (per MicroNote 050) | Supports operation in low-earth orbit or nuclear instrumentation without parametric degradation |
Applications
| Switch-Mode Power Supply Feedback | Industrial Sensor Reference |
|---|---|
Use Scenario: Regulates output voltage in isolated flyback or forward converter feedback loop via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Precision voltage reference establishing 150 V threshold for secondary-side regulation. Use Value: Maintains ±1% output accuracy over -40°C to +85°C ambient with <0.1 µA leakage preserving feedback divider integrity. |
Use Scenario: Provides stable excitation voltage for bridge-based pressure or strain sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-noise, low-drift Zener reference replacing bulkier IC references where size and cost are constrained. Use Value: Delivers 150 V reference with +0.110 %/°C drift - enabling <±0.5% full-scale error over 0–70°C sensor operating range. |
| Overvoltage Protection Clamp | High-Voltage Bias Network |
Use Scenario: Clamps transient surges on 120 V AC-derived DC rails in motor drive gate driver supplies. IC Role / Device Role / Timing Role: Fast-acting shunt protector limiting rail voltage to 150 V during line spikes or inductive kickback. Use Value: Withstands 0.5 W steady-state and short-duration surge energy while maintaining tight 150 V clamping threshold. |
Use Scenario: Sets bias point for vacuum tube audio amplifiers or photomultiplier tube dynode chains. IC Role / Device Role / Timing Role: High-voltage, low-current Zener source delivering stable 150 V to cascaded gain stages. Use Value: Enables ultra-low leakage (<0.1 µA) bias generation with minimal thermal drift - critical for signal-to-noise preservation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5276B | Axial DO-35 package; identical electrical specs but non-surface-mount; no tape-and-reel option | Suitable for through-hole prototyping or legacy board rework; not compatible with SMT production lines | Select when manual assembly or mixed-technology boards require axial form factor without changing circuit design |
| BZX85C150 | 150 V, 1.3 W, ±5%, DO-41 package; higher power rating but larger footprint and 200 Ω ZZT | Better suited for higher-current regulation (>50 mA); less stable at low currents due to lower knee sharpness | Choose for applications needing >0.5 W dissipation or where lower dynamic impedance is prioritized over size and weight |
Compared with 1N5276B and BZX85C150, the 1N5276BUR-1 offers optimal balance of miniaturized MELF packaging, hermetic reliability, and tight thermal coefficient - ideal for space-constrained, high-stability DC-DC feedback and reference designs where SMT scalability matters.
Availability
1N5276BUR-1 is available at Aetrix Electronics and suitable for switch-mode power supplies, industrial sensor interfaces, overvoltage protection circuits, and high-voltage bias networks requiring stable component supply and consistent parametric performance across production lots.
Supply support for 1N5276BUR-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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series was designed to deliver JEDEC-standard Zener performance in ruggedized surface-mount MELF packaging - targeting applications demanding hermetic sealing, MIL-spec screening capability, and stable voltage reference under extreme environmental stress.
FAQ
What is the Zener voltage tolerance and test current for the 1N5276BUR-1?
The 1N5276BUR-1 has a nominal Zener voltage of 150 V with ±5% tolerance, measured at a test current (IZT) of 20 mA. This tolerance corresponds to the "B" suffix in the part nomenclature and ensures predictable regulation behavior in feedback and reference circuits where moderate precision is required without premium-grade binning.
Does the 1N5276BUR-1 support RoHS compliance?
Yes, the 1N5276BUR-1 is available in RoHS-compliant versions (marked with "e3" suffix) for commercial-grade applications. These variants use annealed matte-tin plating on end caps and meet lead-free soldering requirements per J-STD-020, while retaining identical electrical and thermal specifications as non-RoHS versions.
What is the maximum operating temperature range for the 1N5276BUR-1?
The 1N5276BUR-1 supports a junction and storage temperature range of -65°C to +175°C. Its thermal resistance junction-to-ambient is 250°C/W on standard FR4 board, meaning derating is required above +50°C ambient or +125°C end-cap temperature to maintain 0.5 W power dissipation capability.
Can the 1N5276BUR-1 be used in radiation-intensive environments?
Yes, the 1N5276BUR-1 is inherently radiation-hardened per Microsemi MicroNote 050, making it suitable for low-earth orbit satellite subsystems and nuclear instrumentation where total ionizing dose (TID) resilience is required without additional shielding or derating.
Is tape-and-reel packaging available for the 1N5276BUR-1?
Yes, tape-and-reel packaging is supported for the 1N5276BUR-1 per EIA-481-B standard. To order this configuration, append the "TR" suffix to the base part number (e.g., 1N5276BUR-1TR), and consult Aetrix Electronics for minimum order quantities and reel specifications.
1N5276BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 150 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 114 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
1N5276BUR-1 FAQ
1.How can I place an order for 1N5276BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5276BUR-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 1N5276BUR-1 reliable?
The price and inventory of 1N5276BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5276BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5276BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5276BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5276BUR-1?
1N5276BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5276BUR-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 1N5276BUR-1?
For technical support, including 1N5276BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5276BUR-1 requirements.
6.How does Aetrix verify that 1N5276BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5276BUR-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 1N5276BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5276BUR-1?
All 1N5276BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5276BUR-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 1N5276BUR-1 part is unused and in its original packaging.
Return procedure for 1N5276BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5276BUR-1 Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
