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Microchip Technology 1N5258BUR-1
- Part No.:
- 1N5258BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5258BUR-1.pdf
- Description:
- DIODE ZENER 36V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,070
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Product details
Overview
1N5258BUR-1 from Microsemi is a 36 V, 5% tolerance, 500 mW surface-mount Zener diode in a hermetically sealed DO-213AA (SOD80/MLL34) MELF glass package, designed for precision voltage regulation in space-constrained analog power rails and reference circuits.
For engineers reviewing the 1N5258BUR-1 datasheet, 1N5258BUR-1 pinout, 1N5258BUR-1 application, or 1N5258BUR-1 equivalent, key selection criteria include its 36 V nominal Zener voltage at 3.4 mA test current, 70 Ω dynamic impedance at IZT, ±0.093 %/°C temperature coefficient, and operation across –65 °C to +175 °C junction temperature range.
Technical Context
This device operates as a reverse-biased voltage reference with a sharp breakdown knee at IZK = 0.25 mA and specified regulation at IZT = 3.4 mA. Its metallurgically bonded glass construction ensures stable long-term Zener voltage drift and radiation hardness per MicroNote 050.
The 1N5258BUR-1 exhibits low capacitance (typical ~2.5 pF at VR = 0 V), minimal ESD sensitivity (MIL-STD-750 Method 1020), and thermal resistance of 100 °C/W junction-to-end-cap - enabling reliable regulation under transient load conditions on thermally constrained PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 36 V at IZT = 3.4 mA - defines primary regulation point for stable reference generation |
| Zener Tolerance | ±5% - ensures predictable voltage band without binning or post-selection |
| Power Dissipation (PD) | 500 mW - supports continuous regulation up to 13.9 mA at 36 V with proper end-cap cooling |
| Dynamic Impedance (ZZT) | 70 Ω at IZT - determines output voltage variation under ±1 mA load current change |
| Temp. Coefficient (αVZ) | +0.093 %/°C - quantifies voltage drift over temperature; enables compensation in precision references |
| Max Reverse Leakage (IR) | 0.1 µA at VR = 26 V - ensures negligible error current in high-impedance bias networks |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in aerospace, downhole, and industrial environments |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed, metallurgically bonded, cathode band marked, end-cap terminals only - no leads or pads. Dimensions: Ø1.6–1.7 mm × L3.3–3.7 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode End Cap | Forward conduction terminal / Zener cathode return path | Connected to circuit ground or lowest potential node during Zener operation |
| Cathode End Cap | Zener regulation terminal / reverse-bias anode | Connected to regulated voltage node; banded end must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter shift in humid or high-reliability environments |
| Metallurgical bonding | Ensures mechanical robustness and thermal stability under thermal cycling and vibration |
| Radiation hardness (per MicroNote 050) | Validated performance in total ionizing dose (TID) environments typical of space applications |
| Low capacitance (~2.5 pF) | Minimizes signal coupling and noise injection in RF-adjacent or high-speed analog reference paths |
| ESD insensitivity (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without screening or handling controls - simplifies assembly flow |
Applications
| Industrial Power Monitoring | Aerospace Reference Supply |
|---|---|
Use Scenario: Monitoring 48 V DC bus voltage in programmable logic controller (PLC) backplanes using resistive divider + ADC. IC Role / Device Role / Timing Role: Zener reference providing stable 36 V clamp for divider scaling and overvoltage protection. Use Value: ±5% tolerance and +0.093 %/°C TC ensure <±2.5% total error over –40 °C to +85 °C ambient without calibration. | Use Scenario: Generating a stable 36 V reference for radiation-tolerant DAC biasing in satellite telemetry subsystems. IC Role / Device Role / Timing Role: Primary voltage reference element in a hardened analog front-end requiring TID resilience. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in LEO missions. |
| Medical Sensor Biasing | Automotive Engine Control Unit |
Use Scenario: Providing excitation voltage to piezoresistive pressure sensors in portable ultrasound transducers. IC Role / Device Role / Timing Role: Low-noise, low-capacitance Zener source for sensor bridge bias, isolated from switching noise. Use Value: 2.5 pF capacitance prevents coupling of 100 kHz–1 MHz switching artifacts into microvolt-level sensor signals. | Use Scenario: Regulating auxiliary 36 V rail for fuel injector driver ICs in diesel common-rail systems. IC Role / Device Role / Timing Role: Overvoltage clamp and stabilization element protecting gate drivers during load dump transients. Use Value: 500 mW rating and –65 °C to +175 °C operation support survival through ISO 7637-2 Pulse 5a events and under-hood thermal stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5258B-1 | Same 36 V/5% spec, but in axial DO-35 (DO-204AH) package - no surface-mount capability | Requires through-hole PCB layout and manual or wave soldering; unsuitable for automated SMT lines | Select when legacy board repair or mixed-technology assembly mandates axial form factor |
| BZX55C36 | 36 V, 5%, 500 mW in DO-35; higher ZZT (100 Ω vs. 70 Ω); no radiation hardness documentation | Lacks MIL-PRF-19500 screening and radiation qualification - not suitable for space or nuclear-grade use | Select for cost-sensitive commercial applications where radiation tolerance and ultra-low ZZT are non-critical |
Compared with 1N5258B-1 and BZX55C36, the 1N5258BUR-1 uniquely combines SMT compatibility, 70 Ω ZZT, and documented radiation hardness - making it the only choice for high-reliability, space-constrained, radiation-exposed designs.
Availability
1N5258BUR-1 is available at Aetrix Electronics and suitable for industrial power monitoring, aerospace reference supplies, medical sensor biasing, automotive engine control units, and other applications requiring stable component supply across extended temperature and reliability requirements.
Supply support for 1N5258BUR-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-performance analog and mixed-signal components.
The 1N5258BUR-1 belongs to Microsemi's legacy 1N52xxBUR-1 series of metallurgically bonded glass Zeners, engineered for military, aerospace, and industrial applications demanding long-term stability, hermetic sealing, and extreme environmental resilience.
FAQ
What is the Zener voltage tolerance of the 1N5258BUR-1?
The 1N5258BUR-1 has a nominal Zener voltage of 36 V with a guaranteed tolerance of ±5% at IZT = 3.4 mA and TA = 25 °C. This tolerance is defined by the "B" suffix in the part number per Microsemi's nomenclature, and applies across the full operating temperature range without additional derating.
Does the 1N5258BUR-1 require external heat sinking?
No, the 1N5258BUR-1 does not require external heat sinking under standard conditions. Its thermal resistance junction-to-end-cap is 100 °C/W, and it can dissipate its full 500 mW rating when the end-cap temperature remains below 125 °C - achievable via standard FR4 PCB copper area per the recommended footprint in the datasheet.
Is the 1N5258BUR-1 RoHS compliant?
Yes, the 1N5258BUR-1 is available in RoHS-compliant versions (marked with "e3" suffix, e.g., 1N5258BUR-1e3), but only for commercial-grade units. The RoHS-compliant variant uses annealed matte-tin plating and meets JEDEC J-STD-609A Class 3 requirements.
What is the maximum reverse leakage current for the 1N5258BUR-1?
The maximum reverse leakage current (IR) for the 1N5258BUR-1 is 0.1 µA when tested at VR = 26 V and TA = 25 °C. This low leakage ensures minimal error contribution in high-impedance reference divider networks and precision biasing applications.
Can the 1N5258BUR-1 be used in radiation-intensive environments?
Yes, the 1N5258BUR-1 is inherently radiation hard per Microsemi MicroNote 050, which documents its performance under total ionizing dose (TID) exposure. This makes the 1N5258BUR-1 suitable for satellite, avionics, and nuclear instrumentation applications where radiation-induced parameter shift must be minimized.
1N5258BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 70 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 27 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
1N5258BUR-1 FAQ
1.How can I place an order for 1N5258BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5258BUR-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 1N5258BUR-1 reliable?
The price and inventory of 1N5258BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5258BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5258BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5258BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5258BUR-1?
1N5258BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5258BUR-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 1N5258BUR-1?
For technical support, including 1N5258BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5258BUR-1 requirements.
6.How does Aetrix verify that 1N5258BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5258BUR-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 1N5258BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5258BUR-1?
All 1N5258BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5258BUR-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 1N5258BUR-1 part is unused and in its original packaging.
Return procedure for 1N5258BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5258BUR-1 Tags
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MM5Z5V1ST1G
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