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Microchip Technology 1N5271BUR-1/TR
- Part No.:
- 1N5271BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5271BUR-1/TR.pdf
- Description:
- DIODE ZENER 100V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,397
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Product details
Overview
1N5271BUR-1/TR from Microsemi is a surface-mount 100 V, ±5% tolerance Zener diode in DO-213AA (SOD80) MELF glass package, rated for 500 mW steady-state power dissipation, with 1.3 mA test current, 500 Ω dynamic impedance at IZT, and -65 °C to +175 °C junction temperature range - used for precision voltage regulation in industrial power supplies and reference circuits.
For engineers reviewing the 1N5271BUR-1/TR datasheet, 1N5271BUR-1/TR pinout, 1N5271BUR-1/TR application, or 1N5271BUR-1/TR equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJA = 250 °C/W), low leakage (<0.1 µA @ 72 V), radiation-hardened construction, and RoHS-compliant commercial-grade availability with TR tape-and-reel packaging.
Technical Context
This device operates as a reverse-biased voltage reference, maintaining stable 100 V regulation across 1.3 mA test current and up to 500 mW power dissipation. Its metallurgically bonded glass construction ensures hermetic sealing and inherent radiation hardness per MicroNote 050, with minimal capacitance and ESD insensitivity per MIL-STD-750 Method 1020.
The 1N5271BUR-1/TR exhibits a positive temperature coefficient of +0.110 %/°C, indicating increasing Zener voltage with rising temperature - critical for thermal drift compensation in high-reliability analog references. It requires no external biasing circuitry and functions as a two-terminal passive regulator without control logic or active feedback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 100 V ±5% at 1.3 mA - defines precise regulation point for overvoltage clamping or reference generation. |
| Power Dissipation PD | 0.5 W maximum - limits continuous thermal load on PCB; derates above 50 °C ambient or 125 °C end cap. |
| Dynamic Impedance ZZT | 500 Ω at IZT = 1.3 mA - determines output voltage stability under varying load current. |
| Reverse Leakage IR | <0.1 µA at 72 V - ensures negligible standby current in high-impedance bias networks. |
| Junction Temperature Range | -65 °C to +175 °C - supports operation in extended industrial, aerospace, and downhole environments. |
| Thermal Resistance RθJA | 250 °C/W on FR4 (1 oz Cu) - dictates required copper area and airflow for thermal management. |
| Package | DO-213AA (SOD80/MELF) - cylindrical glass body with tin-lead or matte-tin end caps; cathode band marked. |
Pinout & Package
DO-213AA (SOD80) MELF glass package: hermetically sealed, metallurgically bonded, 0.063–0.067 inch diameter × 0.130–0.146 inch length, weight 0.04 g, cathode band marking only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; reverse voltage applied between cathode and anode. |
| Cathode | Zener regulation terminal / voltage reference output | Marked with band; connected to regulated voltage rail; carries reverse current during regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments. |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for space-qualified and nuclear instrumentation applications. |
| Low capacitance | Typical <1.5 pF (per Figure 3) - preserves high-frequency signal integrity in RF bias and timing circuits. |
| MIL-PRF-19500 up-screening option | Available with MQ/MX/MV/MSP reliability levels - enables use in military and aerospace programs requiring qualified screening. |
| RoHS-compliant commercial version | e3 suffix available - meets EU directive without compromising electrical performance or thermal rating. |
Applications
| Industrial Power Supply Reference | Aerospace Voltage Clamp |
|---|---|
Use Scenario: Stable 100 V reference in isolated DC-DC converter feedback loop for telecom rectifiers. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing error-signal baseline for optocoupler-coupled regulation. Use Value: Tight 5% tolerance and +0.110 %/°C TC enable ±1.5% total regulation error over -40 °C to +85 °C operating range. | Use Scenario: Overvoltage protection on 28 V aircraft bus against transients exceeding 100 V. IC Role / Device Role / Timing Role: Standby shunt regulator activated only during fault conditions to clamp bus voltage. Use Value: Radiation-hardened construction and -65 °C to +175 °C rating ensure reliability in avionics bays without derating. |
| Test Equipment Calibration Standard | Downhole Sensor Bias Network |
Use Scenario: Precision 100 V source in portable multimeter internal reference divider chain. IC Role / Device Role / Timing Role: Primary Zener reference establishing absolute voltage scale for ADC full-scale calibration. Use Value: Low 0.1 µA leakage at 72 V prevents loading errors in high-impedance 10 MΩ+ divider networks. | Use Scenario: Biasing high-temperature pressure transducers in oil/gas wellhead electronics (150 °C ambient). IC Role / Device Role / Timing Role: Voltage stabilizer for bridge excitation in MEMS sensor front-end. Use Value: 175 °C max junction temperature and 250 °C/W RθJA allow direct mounting on ceramic substrate with no heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5271B-1/TR | Same 100 V, ±5%, DO-35 axial package; higher RθJA (300 °C/W); no MELF mechanical robustness. | Suitable for through-hole prototyping or legacy board rework; not for high-vibration or automated SMT lines. | Select when axial lead compatibility or manual soldering is required; avoid in high-reliability SMT production. |
| BZX55C100-TAP | 100 V, ±5%, DO-35; 500 mW rating; 600 Ω ZZT; non-radiation-hardened; RoHS-only. | Lacks MIL-PRF-19500 screening and radiation hardness; limited to commercial-grade industrial use. | Choose for cost-sensitive consumer or non-critical industrial designs where radiation tolerance is unnecessary. |
Compared with 1N5271B-1/TR and BZX55C100-TAP, the 1N5271BUR-1/TR uniquely combines SMT-compatible MELF packaging, hermetic sealing, radiation hardness, and MIL-qualified screening options - making it the only choice for high-integrity, surface-mount voltage reference applications demanding extended temperature and reliability assurance.
Availability
1N5271BUR-1/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace voltage clamping, and downhole sensor bias networks requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5271BUR-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 analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener regulator product line, designed specifically for applications demanding hermetic sealing, extended temperature operation, and qualification to MIL-PRF-19500 standards.
FAQ
What is the Zener voltage tolerance and test current for the 1N5271BUR-1/TR?
The 1N5271BUR-1/TR has a nominal Zener voltage of 100 V with a ±5% tolerance, verified at a test current (IZT) of 1.3 mA. This tolerance is guaranteed per the "B" suffix in the part number and applies across the full operating temperature range of -65 °C to +175 °C, with voltage measured after 20 seconds of thermal stabilization.
Does the 1N5271BUR-1/TR support RoHS compliance, and how is it indicated?
Yes, the 1N5271BUR-1/TR is available in RoHS-compliant form with matte-tin plating, designated by the "e3" suffix (e.g., 1N5271BUR-1e3/TR). RoHS compliance applies only to commercial-grade versions; screened variants (MQ/MX/MV/MSP) retain tin-lead terminations per MIL-STD-750.
What is the maximum reverse leakage current specification for the 1N5271BUR-1/TR?
The 1N5271BUR-1/TR specifies a maximum reverse leakage current (IR) of 0.1 µA when biased at 72 V - which is 72% of its nominal 100 V Zener voltage. This ultra-low leakage ensures minimal error in high-impedance reference divider networks and bias circuits.
Can the 1N5271BUR-1/TR be used in radiation-intensive environments such as space or nuclear facilities?
Yes, the 1N5271BUR-1/TR is inherently radiation-hardened per Microsemi MicroNote 050, with no degradation in Zener voltage or leakage performance after exposure to total ionizing dose (TID) levels typical of LEO and GEO missions. This property stems from its metallurgically bonded glass construction and process design.
What is the thermal resistance and power derating behavior of the 1N5271BUR-1/TR?
The 1N5271BUR-1/TR has a junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on FR4 with 1 oz copper and the recommended footprint. Its 500 mW power rating must be derated linearly above 50 °C ambient or 125 °C end cap temperature, reaching zero dissipation at 175 °C junction temperature.
1N5271BUR-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):
- 100 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 500 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 76 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
1N5271BUR-1/TR FAQ
1.How can I place an order for 1N5271BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5271BUR-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 1N5271BUR-1/TR reliable?
The price and inventory of 1N5271BUR-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 1N5271BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5271BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5271BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5271BUR-1/TR?
1N5271BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5271BUR-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 1N5271BUR-1/TR?
For technical support, including 1N5271BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5271BUR-1/TR requirements.
6.How does Aetrix verify that 1N5271BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5271BUR-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 1N5271BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5271BUR-1/TR?
All 1N5271BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5271BUR-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 1N5271BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5271BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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