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Microchip Technology 1N5253BUR-1/TR
- Part No.:
- 1N5253BUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5253BUR-1/TR.pdf
- Description:
- DIODE ZENER 25V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,584
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Product details
Overview
1N5253BUR-1/TR from Microsemi is a 25 V, 500 mW surface-mount Zener diode in DO-213AA (SOD80) MELF package with ±5% tolerance, 5.0 Ω dynamic impedance at 20 mA, and -65 °C to +175 °C operating temperature range, used for precision voltage regulation in power supply feedback loops and reference circuits.
For engineers reviewing the 1N5253BUR-1/TR datasheet, 1N5253BUR-1/TR pinout, 1N5253BUR-1/TR application, or 1N5253BUR-1/TR equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance, hermetic glass packaging for reliability, thermal resistance (250 °C/W), and RoHS-compliant commercial-grade availability with TR tape-and-reel packaging.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 25 V at 20 mA test current (IZT), exhibiting a temperature coefficient of +0.089 %/°C and maximum reverse leakage current of 0.1 µA at 19 V. Its metallurgically bonded glass construction ensures stable breakdown characteristics across wide temperature extremes.
The DO-213AA package enables surface-mount assembly with end-cap soldering per MIL-STD-750 Method 2026, supporting thermal dissipation up to 500 mW at end-cap temperature <125 °C or ambient <50 °C on FR4 board - critical for compact, high-reliability analog designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25 V ±5% at 20 mA - defines precise regulation point for feedback networks |
| Power Dissipation (PD) | 0.5 W - supports stable operation in space-constrained PCB layouts without forced cooling |
| Dynamic Impedance (ZZT) | 35 Ω at IZT = 20 mA - ensures minimal output voltage variation under load transients |
| Junction Temperature Range | -65 °C to +175 °C - enables use in automotive under-hood, industrial, and aerospace environments |
| Thermal Resistance (RθJA) | 250 °C/W on FR4 (1 oz Cu) - determines safe derating curve for continuous operation |
| Reverse Leakage (IR) | 0.1 µA at VR = 19 V - guarantees low quiescent current in battery-powered reference circuits |
| Forward Voltage (VF) | 1.1 V max at 200 mA - allows use as clamp or protection diode in dual-role applications |
Pinout & Package
DO-213AA (SOD80 or MLL34) MELF-style hermetically sealed glass package with tin-lead or RoHS-compliant matte-tin end-cap plating; cathode indicated by single band; weight 0.04 g; compatible with EIA-481-B tape-and-reel (TR suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; establishes polarity for Zener conduction |
| Cathode (banded end) | Regulated output node | Provides stable 25 V when reverse-biased; connects to feedback input or load |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical bonding | Ensures mechanical robustness and thermal stability during reflow and thermal cycling |
| Low capacitance (typ. <2 pF) | Maintains high-frequency response in RF biasing and fast-switching regulator applications |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-grade analog references |
| ESD insensitivity | Non-sensitive to ESD per MIL-STD-750 Method 1020 - simplifies handling and assembly without special precautions |
Applications
| Power Supply Feedback Regulation | Industrial Sensor Reference |
|---|---|
Use Scenario: Stabilizing output voltage in isolated DC-DC converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener reference providing precise 25 V threshold to error amplifier input. Use Value: Tight ±5% tolerance and 35 Ω dynamic impedance minimize output voltage drift across line/load/temperature. | Use Scenario: Supplying stable excitation voltage to bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Precision voltage reference establishing known bias point for ratiometric measurement. Use Value: -65 °C to +175 °C operating range and hermetic sealing ensure calibration stability in uncontrolled industrial enclosures. |
| Automotive ECUs | Test & Measurement Equipment |
Use Scenario: Providing regulated bias for CAN transceiver VIO rails and microcontroller reset supervisors. IC Role / Device Role / Timing Role: Low-leakage (0.1 µA) Zener reference enabling reliable cold-cranking operation down to -40 °C. Use Value: Radiation hardness and ESD insensitivity meet AEC-Q101 stress requirements without additional protection components. | Use Scenario: Calibrating multimeter front-end ADC references and bench power supply setpoints. IC Role / Device Role / Timing Role: Stable 25 V reference source traceable to primary standards via tight initial tolerance and low tempco (+0.089 %/°C). Use Value: Minimal capacitance (<2 pF) prevents loading errors in high-impedance reference divider networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5253B-TR | Same 25 V ±5%, but in axial DO-35 package; higher RθJA (300 °C/W); no hermetic glass seal | Suitable for through-hole prototyping or legacy board upgrades; not recommended for high-reliability SMT production | Select 1N5253B-TR only when DO-35 footprint compatibility is required and thermal performance margin exists. |
| BZX55C24-TR | 24 V ±5%, 500 mW, DO-35; 70 Ω ZZT; wider temp range (-65 °C to +175 °C); non-hermetic epoxy | Lower voltage grade; higher dynamic impedance reduces regulation accuracy in precision feedback paths | Choose BZX55C24-TR only if 24 V suffices and cost sensitivity outweighs regulation stability needs. |
Compared with 1N5253B-TR and BZX55C24-TR, the 1N5253BUR-1/TR delivers superior regulation stability due to its hermetic glass MELF package, lower dynamic impedance (35 Ω vs. ≥70 Ω), and tighter process control - making it preferred for high-reliability SMT designs where voltage accuracy and long-term drift matter.
Availability
1N5253BUR-1/TR is available at Aetrix Electronics and suitable for power supply feedback regulation, industrial sensor reference, automotive ECUs, and test & measurement equipment requiring stable component supply across extended temperature ranges and high-reliability manufacturing.
Supply support for 1N5253BUR-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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N52xxBUR-1 series belongs to Microsemi's legacy Zener voltage regulator product line, engineered for precision, stability, and ruggedness in mission-critical analog reference and regulation applications.
FAQ
What is the Zener voltage tolerance and test current for the 1N5253BUR-1/TR?
The 1N5253BUR-1/TR has a nominal Zener voltage of 25 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 across the full operating temperature range of -65 °C to +175 °C.
Does the 1N5253BUR-1/TR have RoHS compliance, and how is it marked?
Yes, the 1N5253BUR-1/TR is RoHS compliant (commercial grade only), indicated by the "e3" suffix in the full nomenclature. It features matte-tin end-cap plating and is solderable per MIL-STD-750 Method 2026. The device is marked with a single cathode band only - no alphanumeric coding.
What is the thermal resistance and maximum power dissipation for the 1N5253BUR-1/TR?
The 1N5253BUR-1/TR has a junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on an FR4 board with 1 oz copper and the recommended footprint. Its steady-state power dissipation is rated at 0.5 W, valid only if end-cap temperature remains below 125 °C or ambient stays under 50 °C.
Can the 1N5253BUR-1/TR be used in high-reliability or aerospace applications?
Yes - the 1N5253BUR-1/TR is inherently radiation-hard per Microsemi MicroNote 050 and supports up-screening to MIL-PRF-19500 specifications. Its hermetic glass MELF package and metallurgical bond make it suitable for aerospace, defense, and other high-integrity analog reference applications.
What is the reverse leakage current specification for the 1N5253BUR-1/TR, and at what voltage is it measured?
The 1N5253BUR-1/TR exhibits a maximum reverse leakage current (IR) of 0.1 µA, measured at a reverse voltage (VR) of 19 V. This ultra-low leakage supports energy-efficient operation in battery-backed reference circuits and high-impedance sensing nodes.
1N5253BUR-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):
- 25 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 19 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
1N5253BUR-1/TR FAQ
1.How can I place an order for 1N5253BUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5253BUR-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 1N5253BUR-1/TR reliable?
The price and inventory of 1N5253BUR-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 1N5253BUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N5253BUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5253BUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5253BUR-1/TR?
1N5253BUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5253BUR-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 1N5253BUR-1/TR?
For technical support, including 1N5253BUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5253BUR-1/TR requirements.
6.How does Aetrix verify that 1N5253BUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N5253BUR-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 1N5253BUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N5253BUR-1/TR?
All 1N5253BUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N5253BUR-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 1N5253BUR-1/TR part is unused and in its original packaging.
Return procedure for 1N5253BUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5253BUR-1/TR Tags
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