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Microchip Technology 1N5241BUR-1
- Part No.:
- 1N5241BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5241BUR-1.pdf
- Description:
- DIODE ZENER 11V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,064
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Product details
Overview
1N5241BUR-1 from Microsemi is a 0.5 W surface-mount Zener diode with nominal Zener voltage of 11 V at 20 mA test current, ±5% tolerance (B suffix), 600 Ω maximum dynamic impedance at IZT, and temperature coefficient of +0.076 %/°C - used for precision voltage regulation in low-power analog reference and bias circuits.
For engineers reviewing the 1N5241BUR-1 datasheet, 1N5241BUR-1 pinout, 1N5241BUR-1 application, or 1N5241BUR-1 equivalent, this page delivers verified package dimensions, JEDEC-compliant MELF DO-213AA construction, reverse leakage ≤2.0 µA at 8.0 V, and thermal resistance data for PCB layout and thermal derating.
Technical Context
This device operates as a two-terminal voltage reference in reverse-biased breakdown mode, with regulation specified at IZT = 20 mA and characterized over -65 °C to +175 °C junction temperature range. Its metallurgically bonded glass construction ensures hermetic sealing and radiation hardness per MicroNote 050.
It exhibits minimal capacitance (typical <2 pF at 11 V), low forward voltage (≤1.1 V @ 200 mA), and stable regulation across wide current (0.25–22 mA) and temperature ranges - enabling use in space-constrained, high-reliability analog signal conditioning and power supply feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V at 20 mA - defines precise regulation point for reference design |
| Power Dissipation (PD) | 0.5 W - limits continuous operating current to ~45 mA at 11 V without heatsinking |
| Zener Impedance (ZZT) | 22 Ω max at 20 mA - ensures low output impedance for stable reference under load variation |
| Reverse Leakage (IR) | ≤2.0 µA at 8.0 V - guarantees low error current in high-impedance bias networks |
| Temp. Coefficient (αVZ) | +0.076 %/°C - predicts +0.084 V drift over 100 °C ambient change |
| Junction Temp. Range | -65 °C to +175 °C - supports operation in extended industrial and aerospace environments |
| Package Type | DO-213AA (SOD80/MLL34) MELF - enables automated placement and hermetic reliability |
Pinout & Package
Hermetically sealed glass DO-213AA (MELF) package with axial symmetry and cathode band marking; terminals are end caps with tin-lead or RoHS-compliant matte-tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to higher potential during Zener operation; polarity must be observed to avoid forward conduction |
| Anode (unbanded end) | Reference ground node | Serves as return path for Zener current; forms low-impedance sink for regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgical bonding | Enables hermetic seal and radiation hardness per MicroNote 050, critical for space-grade analog references |
| MIL-PRF-19500 up-screening option | Supports military/aerospace qualification paths when ordered with MQ/MX/MV/MSP reliability suffixes |
| Low capacitance (<2 pF) | Minimizes AC coupling and noise injection in high-frequency feedback and timing circuits |
| ESD robustness (MIL-STD-750 Method 1020) | Eliminates need for external ESD protection in handling and board-level assembly |
| RoHS-compliant version (e3 suffix) | Meets EU environmental compliance for commercial applications without lead content trade-offs |
Applications
| Instrumentation Reference | Power Supply Feedback |
|---|---|
Use Scenario: Precision voltage reference in handheld multimeters and sensor signal conditioners requiring stable 11 V bias. IC Role / Device Role / Timing Role: Zener diode provides fixed reference voltage for ADC input scaling and op-amp offset trimming. Use Value: ±5% tolerance and +0.076 %/°C TC enable <±1% total error over 0–70 °C without calibration. | Use Scenario: Output voltage sensing node in isolated DC-DC converter feedback loops. IC Role / Device Role / Timing Role: Serves as shunt regulator in optocoupler-coupled feedback path to maintain regulated output. Use Value: 0.5 W rating and 22 Ω ZZT support stable regulation under 40 mA load transients without oscillation. |
| Industrial Sensor Biasing | Aerospace Signal Conditioning |
Use Scenario: Biasing bridge sensors and RTDs in factory automation modules exposed to -40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Provides temperature-stable excitation voltage for ratiometric measurements. Use Value: -65 °C to +175 °C junction rating and radiation hardness allow direct use in unheated enclosures. | Use Scenario: Voltage clamping and reference generation in satellite telemetry front-ends. IC Role / Device Role / Timing Role: Functions as hardened Zener clamp on analog monitor lines subject to TID and SEE. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for additional shielding or redundancy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5241B-1 (DO-35) | Axial-leaded DO-35 package; identical electrical specs but larger footprint and manual assembly requirement | Suitable for prototyping or through-hole legacy designs where MELF placement is unavailable | Select when board assembly lacks SMT capability or requires mixed-technology compatibility |
| BZX55C11 (DO-35) | 11 V, ±5%, 500 mW, but higher ZZT (30 Ω) and wider temp coefficient (+0.09 %/°C); non-radiation-hardened | Limited to commercial-grade industrial equipment without radiation or extended temp requirements | Choose for cost-sensitive consumer applications where radiation hardness and tight TC are not required |
Compared with 1N5241B-1 and BZX55C11, the 1N5241BUR-1 offers superior thermal performance (RθJA = 250 °C/W vs. ~300 °C/W for DO-35), smaller MELF footprint, and proven radiation tolerance - making it preferred for high-density, high-reliability SMT designs.
Availability
1N5241BUR-1 is available at Aetrix Electronics and suitable for instrumentation reference, power supply feedback, and industrial sensor biasing requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N5241BUR-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 belongs to Microsemi's legacy Zener voltage regulator product line, engineered for precision, hermetic reliability, and extended-temperature operation in mission-critical analog subsystems.
FAQ
What is the Zener voltage tolerance for 1N5241BUR-1?
The 1N5241BUR-1 has a nominal Zener voltage of 11 V with ±5% tolerance, indicated by the "B" suffix in the part number per Microsemi's nomenclature. This means the actual VZ falls between 10.45 V and 11.55 V when measured at 20 mA and 25 °C, and is guaranteed across the full operating temperature range.
Does 1N5241BUR-1 support RoHS compliance?
Yes, the 1N5241BUR-1 is available in RoHS-compliant form with the "e3" suffix (e.g., 1N5241BUR-1e3), featuring annealed matte-tin plating on end caps. RoHS versions are offered for commercial-grade applications only and retain identical electrical and thermal specifications as non-RoHS variants.
What is the maximum reverse leakage current for 1N5241BUR-1?
The 1N5241BUR-1 specifies a maximum reverse leakage current (IR) of 2.0 µA at VR = 8.0 V and 25 °C. This low leakage ensures minimal error current in high-impedance reference networks and maintains regulation accuracy in battery-powered or low-quiescent-current designs.
Can 1N5241BUR-1 be used in radiation-exposed environments?
Yes, the 1N5241BUR-1 is inherently radiation-hardened per Microsemi MicroNote 050 due to its metallurgically bonded glass construction. It is qualified for use in low-earth orbit and terrestrial radiation environments without additional shielding, making it suitable for satellite telemetry and nuclear instrumentation where TID tolerance is required.
What is the thermal resistance of 1N5241BUR-1 and how does it affect PCB layout?
The 1N5241BUR-1 has a junction-to-ambient thermal resistance (RθJA) of 250 °C/W when mounted on FR4 with 1 oz copper and Microsemi's recommended footprint. To avoid exceeding 125 °C end-cap temperature at 0.5 W dissipation, designers must ensure adequate copper area and avoid thermal isolation - especially in compact MELF layouts.
1N5241BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 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
1N5241BUR-1 FAQ
1.How can I place an order for 1N5241BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5241BUR-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 1N5241BUR-1 reliable?
The price and inventory of 1N5241BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5241BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5241BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5241BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5241BUR-1?
1N5241BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5241BUR-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 1N5241BUR-1?
For technical support, including 1N5241BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5241BUR-1 requirements.
6.How does Aetrix verify that 1N5241BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5241BUR-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 1N5241BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5241BUR-1?
All 1N5241BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5241BUR-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 1N5241BUR-1 part is unused and in its original packaging.
Return procedure for 1N5241BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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