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Microchip Technology 1N5247BUR-1
- Part No.:
- 1N5247BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5247BUR-1.pdf
- Description:
- DIODE ZENER 17V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,213
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Product details
Overview
1N5247BUR-1 from Microsemi is a 17 V, 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF glass package with ±5% voltage tolerance, 7.4 mA test current, and 19 Ω dynamic impedance at 25 °C. It regulates voltage across wide current and temperature ranges and is used in precision reference and low-power voltage stabilization circuits.
For engineers reviewing the 1N5247BUR-1 datasheet, 1N5247BUR-1 pinout, 1N5247BUR-1 application, or 1N5247BUR-1 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (100 °C/W junction-to-end-cap), low leakage (<0.1 µA at 12.4 V), radiation hardness, and RoHS-compliant commercial-grade availability.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal Zener voltage of 17 V at 7.4 mA test current (IZT), exhibiting a positive temperature coefficient of +0.084 %/°C. Its metallurgically bonded glass construction ensures hermetic sealing and stable regulation under thermal cycling.
The 1N5247BUR-1 delivers 500 mW steady-state power dissipation at end-cap temperature <125 °C, with thermal resistance junction-to-end-cap rated at 100 °C/W and junction-to-ambient at 250 °C/W on FR4 board. Forward voltage is ≤1.1 V at 200 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17 V at 7.4 mA - precise regulation point for low-noise analog references |
| Power Dissipation (PD) | 0.5 W - supports compact PCB layout without forced cooling |
| Zener Impedance (ZZT) | 19 Ω at IZT - low AC impedance ensures stable output under varying load |
| Reverse Leakage (IR) | <0.1 µA at 12.4 V - minimal current loss in high-impedance bias networks |
| Temp Coefficient (αVZ) | +0.084 %/°C - predictable drift over -65 to +175 °C operating range |
| Junction Temp Range | -65 to +175 °C - suitable for aerospace, industrial, and extended-temperature designs |
| Package | DO-213AA (SOD80/MLL34) MELF - hermetically sealed, RoHS-compliant surface mount |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package with metallurgically bonded construction, cathode band marking, and tin-lead or RoHS-compliant matte-tin end-cap plating. Weight: 0.04 g. Dimensions: A = 1.60–1.70 mm, B = 3.30–3.70 mm, C = 0.41–0.55 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to circuit ground or lower potential in Zener regulation mode |
| Cathode | Zener breakdown terminal | Banded end; connected to regulated voltage node; must be held positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in harsh environments |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for space-qualified and high-reliability systems |
| Low capacitance | Typical ~2 pF (per Figure 3) - preserves signal integrity in RF and high-speed timing paths |
| MIL-PRF-19500 up-screening option | Available with MQ/MX/MV/MSP reliability levels - meets military/aerospace screening requirements |
| ESD robustness | Non-sensitive per MIL-STD-750 Method 1020 - no special handling required during assembly |
Applications
| Reference Voltage Source | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Providing stable 17 V reference for ADCs, DACs, and op-amp bias networks in instrumentation systems. IC Role / Device Role / Timing Role: Precision voltage reference element in analog signal chains. Use Value: ±5% tolerance and +0.084 %/°C TC enable sub-0.1% total error over -40 to +85 °C without trimming. | Use Scenario: Clamping transient surges on 15 V logic rails or sensor inputs in automotive ECUs. IC Role / Device Role / Timing Role: Shunt overvoltage protection device limiting rail excursion to 17 V. Use Value: 0.5 W power rating and 19 Ω dynamic impedance ensure fast, repeatable clamping without thermal runaway. |
| Low-Power Bias Network | Radiation-Hardened Power Supply |
Use Scenario: Generating stable bias points for JFET amplifiers and discrete transistor stages in portable medical devices. IC Role / Device Role / Timing Role: Low-current Zener shunt regulator in ultra-low-quiescent circuits. Use Value: <0.1 µA leakage at 12.4 V minimizes standby current drain while maintaining 17 V regulation at 100 µA–5 mA. | Use Scenario: Voltage reference in satellite power management units exposed to total ionizing dose (TID). IC Role / Device Role / Timing Role: Radiation-hardened Zener reference in mission-critical DC-DC feedback loops. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or derating in LEO/GEO orbits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5247B-1 | Same 17 V Zener voltage and 5% tolerance, but in axial DO-35 (DO-204AH) package | Requires through-hole PCB layout; higher thermal resistance (RθJA ≈ 500 °C/W) | Select when legacy through-hole assembly or manual prototyping is required |
| BZX55C17 | 17 V, 5% tolerance, 500 mW, but in DO-35 package with typical ZZT = 20 Ω and αVZ = +0.085 %/°C | No MIL-PRF-19500 screening or radiation hardness documentation; RoHS only | Select for cost-sensitive commercial applications where radiation tolerance is not required |
Compared with 1N5247B-1 and BZX55C17, the 1N5247BUR-1 offers superior thermal performance in surface-mount layouts, documented radiation hardness, and hermetic MELF packaging-critical for high-reliability and space-constrained designs.
Availability
1N5247BUR-1 is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage clamping, and low-power bias network applications requiring stable component supply, consistent parametric performance, and long-term obsolescence mitigation.
Supply support for 1N5247BUR-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 aerospace-grade analog and mixed-signal components.
The 1N52xxBUR-1 series was designed to deliver JEDEC-standard Zener regulation in hermetic surface-mount MELF packages for defense, space, and industrial systems demanding long-term stability and environmental resilience.
FAQ
What is the Zener voltage and tolerance of the 1N5247BUR-1?
The 1N5247BUR-1 has a nominal Zener voltage of 17 V with a ±5% tolerance, measured at a test current (IZT) of 7.4 mA and ambient temperature of 25 °C. This tolerance corresponds to the "B" suffix in the part nomenclature and is verified per Microsemi's electrical characteristics table on page 3 of T4-LDS-0232-1 Rev. 1.
What package type does the 1N5247BUR-1 use, and is it RoHS compliant?
The 1N5247BUR-1 uses the DO-213AA (SOD80/MLL34) MELF glass package with metallurgical bonding and cathode band marking. RoHS-compliant versions are available for commercial-grade units, indicated by the "e3" suffix (e.g., 1N5247BUR-1e3); standard versions use tin-lead plating.
Does the 1N5247BUR-1 have radiation hardness certification?
Yes, the 1N5247BUR-1 exhibits inherent radiation hardness per Microsemi MicroNote 050, confirmed in the Applications/Benefits section of the datasheet. It is not individually certified to MIL-STD-883, but its material and construction provide proven TID resilience for space and nuclear applications.
What is the maximum reverse leakage current for the 1N5247BUR-1, and at what voltage is it specified?
The 1N5247BUR-1 has a maximum reverse leakage current (IR) of 0.1 µA, specified at a reverse voltage (VR) of 12.4 V - which is 73% of its nominal 17 V Zener voltage. This value is confirmed in the Electrical Characteristics table on page 3 of the datasheet.
Can the 1N5247BUR-1 be used in high-temperature environments?
Yes, the 1N5247BUR-1 is rated for junction and storage temperatures from -65 to +175 °C. Its thermal resistance junction-to-end-cap is 100 °C/W, enabling reliable operation at end-cap temperatures up to 125 °C - validated in the Maximum Ratings table on page 1 of T4-LDS-0232-1 Rev. 1.
1N5247BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 17 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 13 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
1N5247BUR-1 FAQ
1.How can I place an order for 1N5247BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5247BUR-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 1N5247BUR-1 reliable?
The price and inventory of 1N5247BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5247BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5247BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5247BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5247BUR-1?
1N5247BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5247BUR-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 1N5247BUR-1?
For technical support, including 1N5247BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5247BUR-1 requirements.
6.How does Aetrix verify that 1N5247BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5247BUR-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 1N5247BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5247BUR-1?
All 1N5247BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5247BUR-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 1N5247BUR-1 part is unused and in its original packaging.
Return procedure for 1N5247BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5247BUR-1 Tags
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MM5Z5V1ST1G
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