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Microchip Technology 1N5227BUR-1/TR
- Part No.:
- 1N5227BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5227BUR-1/TR.pdf
- Description:
- DIODE ZENER 3.6V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:305
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Product details
Overview
1N5227BUR-1/TR from Microsemi is a 3.6 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 24 Ω dynamic impedance at 20 mA test current, operates from –65 °C to +175 °C, and exhibits –0.065 %/°C temperature coefficient.
For engineers reviewing the 1N5227BUR-1/TR datasheet, 1N5227BUR-1/TR pinout, 1N5227BUR-1/TR application, or 1N5227BUR-1/TR equivalent, key selection criteria include its hermetically sealed metallurgically bonded construction, minimal 15 µA reverse leakage at 0.95 V, RoHS-compliant commercial-grade option, and compatibility with automated SMT assembly per EIA-481-B tape-and-reel packaging.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable output voltage across varying load currents (IZK = 0.25 mA to IZM ≈ 149 mA) and temperatures. Its low 1700 Ω dynamic impedance near the knee (ZZK @ 0.25 mA) ensures predictable regulation onset, while the –0.065 %/°C temperature coefficient minimizes drift in 3.6 V reference applications.
The DO-213AA package provides hermetic sealing and metallurgical bonding for enhanced reliability in harsh environments. Thermal resistance junction-to-ambient is 250 °C/W on FR4 with 1 oz Cu, requiring derating above 50 °C ambient or 125 °C end-cap temperature to sustain full 0.5 W dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.6 V ±5% at 20 mA - defines nominal regulation point with tight tolerance for stable reference generation |
| Power Dissipation PD | 0.5 W - maximum continuous power handling under specified thermal conditions |
| Dynamic Impedance ZZT | 24 Ω @ 20 mA - low AC impedance ensures minimal output voltage variation under changing load current |
| Reverse Leakage IR | 15 µA @ 0.95 V - low leakage preserves accuracy in high-impedance bias networks |
| Temp. Coefficient αVZ | –0.065 %/°C - negative drift characteristic enables compensation in multi-Zener references |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in extended industrial, aerospace, and downhole environments |
| Forward Voltage VF | 1.1 V max @ 200 mA - ensures predictable forward conduction behavior during transient clamping |
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 |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential during reverse-bias operation; determines polarity of regulated output |
| Anode (unbanded end) | Reference return terminal | Common return path for bias current and load; establishes ground reference for regulated voltage |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded construction | Eliminates wire bonds to improve thermal cycling reliability and long-term parameter stability |
| Hermetic glass sealing | Prevents moisture ingress and contamination, enabling use in high-humidity or corrosive environments |
| MIL-PRF-19500 up-screening option | Supports qualification for military/aerospace applications requiring enhanced screening and traceability |
| Low capacitance (~2.5 pF typical) | Minimizes signal coupling and phase shift in RF bias and timing circuits |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-qualified subsystems |
Applications
| High-Stability Reference Supply | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Providing precise 3.6 V bias for ADC reference inputs and op-amp feedback networks in industrial sensor signal conditioning. IC Role / Device Role / Timing Role: Voltage reference element establishing DC operating point with minimal drift over temperature and time. Use Value: ±5% initial tolerance and –0.065 %/°C TC enable <±2% total error over –40 °C to +85 °C without trimming. | Use Scenario: Protecting microcontroller I/O pins from ESD transients and supply rail overshoot in automotive body control modules. IC Role / Device Role / Timing Role: Shunt clamping device diverting excess energy to ground when voltage exceeds 3.6 V threshold. Use Value: 15 µA leakage at 0.95 V ensures negligible standby current draw; 0.5 W rating handles repetitive 100 ns pulses. |
| Low-Power Sensor Excitation | Temperature-Compensated Bias Network |
Use Scenario: Supplying excitation current to resistive temperature detectors (RTDs) in portable medical diagnostics equipment. IC Role / Device Role / Timing Role: Constant-voltage source delivering stable current through series RTD and sense resistor. Use Value: Low 24 Ω ZZT maintains regulation despite current variations caused by RTD resistance changes. | Use Scenario: Forming part of a dual-Zener temperature-compensation network in precision oscillator biasing circuits. IC Role / Device Role / Timing Role: Negative-TC reference element paired with positive-TC Zener to cancel overall drift. Use Value: Predictable –0.065 %/°C coefficient allows accurate cancellation when matched with +0.065 %/°C counterpart. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5227B-1 | Same 3.6 V, ±5%, 0.5 W rating but in axial DO-35 (DO-204AH) package | Requires through-hole PCB layout and manual or wave soldering; not compatible with SMT lines | Select when legacy board design or hand-soldered prototyping mandates axial leaded form factor |
| BZX55C3V6 | 3.6 V, ±5%, 0.5 W in DO-35; higher 30 Ω ZZT, 50 µA IR @ 1 V, no MIL-PRF-19500 screening option | Lacks hermetic sealing and metallurgical bonding; lower reliability in high-reliability or extended-temp applications | Select for cost-sensitive commercial applications where environmental robustness is secondary to BOM cost |
Compared with 1N5227B-1 and BZX55C3V6, the 1N5227BUR-1/TR offers superior thermal performance (250 °C/W RθJA vs. ~350 °C/W for DO-35), lower leakage, and SMT compatibility-critical for compact, high-density, or automated production designs.
Availability
1N5227BUR-1/TR is available at Aetrix Electronics and suitable for precision reference supplies, overvoltage protection circuits, and low-power sensor excitation systems requiring stable component supply, consistent parametric performance, and long-term obsolescence management.
Supply support for 1N5227BUR-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 precision analog components for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator product line, engineered for applications demanding hermetic reliability, wide temperature operation, and MIL-spec screening capability in surface-mount form.
FAQ
What is the Zener voltage tolerance and test current for the 1N5227BUR-1/TR?
The 1N5227BUR-1/TR has a nominal Zener voltage of 3.6 V with a ±5% tolerance, verified at a test current (IZT) of 20 mA. This tolerance is guaranteed per the "B" suffix in the part number and applies under standard 25 °C conditions with thermal stabilization prior to measurement.
Does the 1N5227BUR-1/TR have RoHS-compliant packaging options?
Yes, the 1N5227BUR-1/TR is available in RoHS-compliant versions designated by the "e3" suffix (e.g., 1N5227BUR-1e3/TR), featuring annealed matte-tin plating on end caps. These comply with EU RoHS Directive 2011/65/EU and are offered for commercial-grade units only.
What is the maximum reverse leakage current specification for the 1N5227BUR-1/TR?
The 1N5227BUR-1/TR specifies a maximum reverse leakage current (IR) of 15 µA at a reverse voltage (VR) of 0.95 V and 25 °C. This low leakage supports high-impedance bias networks and minimizes power loss in battery-powered applications.
Can the 1N5227BUR-1/TR be used in high-temperature environments?
Yes, the 1N5227BUR-1/TR is rated for junction and storage temperatures from –65 °C to +175 °C. When mounted on FR4 with 1 oz Cu and proper footprint, it sustains full 0.5 W dissipation up to 50 °C ambient or 125 °C end-cap temperature, with linear derating beyond those limits.
What package type does the 1N5227BUR-1/TR use, and how is polarity indicated?
1N5227BUR-1/TR uses the DO-213AA (SOD80/MLL34) MELF glass package. Polarity is indicated by a single cathode band on one end cap; the banded end is the cathode and must be connected to the higher-potential node during Zener regulation operation.
1N5227BUR-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):
- 3.6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 24 Ohms
- Current - Reverse Leakage @ Vr:
- 15 µA @ 1 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
1N5227BUR-1/TR FAQ
1.How can I place an order for 1N5227BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5227BUR-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 1N5227BUR-1/TR reliable?
The price and inventory of 1N5227BUR-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 1N5227BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5227BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5227BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5227BUR-1/TR?
1N5227BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5227BUR-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 1N5227BUR-1/TR?
For technical support, including 1N5227BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5227BUR-1/TR requirements.
6.How does Aetrix verify that 1N5227BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5227BUR-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 1N5227BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5227BUR-1/TR?
All 1N5227BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5227BUR-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 1N5227BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5227BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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