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Microchip Technology 1N5260BUR-1
- Part No.:
- 1N5260BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5260BUR-1.pdf
- Description:
- DIODE ZENER 43V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,078
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Product details
Overview
1N5260BUR-1 from Microsemi is a 43 V, 500 mW surface-mount Zener diode in DO-213AA (SOD80) MELF package with ±5% tolerance, 93 Ω dynamic impedance at 3.0 mA test current, and +0.095 %/°C temperature coefficient. It regulates voltage in precision reference and low-power bias circuits across industrial temperature ranges.
For engineers reviewing the 1N5260BUR-1 datasheet, 1N5260BUR-1 pinout, 1N5260BUR-1 application, or 1N5260BUR-1 equivalent, key selection criteria include Zener voltage stability over temperature, low leakage (<0.1 µA at 31 V), hermetic glass packaging for reliability, and compatibility with automated SMT assembly on FR4 boards.
Technical Context
This device operates as a reverse-biased voltage reference with a nominal breakdown voltage of 43 V at 3.0 mA (IZT). Its metallurgically bonded glass construction ensures stable junction characteristics and radiation hardness per MicroNote 050.
Thermal resistance is 100 °C/W junction-to-end-cap and 250 °C/W junction-to-ambient (on FR4, 1 oz Cu), requiring derating above 50 °C ambient or 125 °C end-cap temperature to maintain 500 mW power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43 V ±5% at 3.0 mA - defines stable regulation point for reference design |
| Power Dissipation (PD) | 0.5 W - maximum continuous DC power under specified thermal conditions |
| Dynamic Impedance (ZZT) | 93 Ω at IZT = 3.0 mA - determines output voltage variation under load current changes |
| Reverse Leakage (IR) | <0.1 µA at VR = 31 V - ensures minimal error current in high-impedance reference paths |
| Temp. Coefficient (αVZ) | +0.095 %/°C - quantifies voltage drift magnitude over operating temperature range |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in harsh industrial and aerospace environments |
| Forward Voltage (VF) | 1.1 V max at 200 mA - relevant for forward-conduction protection or polarity checking |
Pinout & Package
DO-213AA (SOD80 or MLL34) MELF glass package with axial symmetry and cathode band marking. End-cap terminals are solderable per MIL-STD-750, method 2026. No discrete pins - bidirectional cylindrical terminals with polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener anode connection during regulation | Connected to higher potential node; reverse bias enables breakdown conduction |
| Anode (unbanded end) | Zener cathode connection during regulation | Connected to lower potential node; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetically sealed glass construction | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical bonding | Ensures robust die attachment and stable thermal performance under thermal cycling |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for space-qualified designs |
| ESD insensitivity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling |
| Low capacitance | Typical ~1.5 pF (per Figure 3) - preserves high-frequency signal integrity in RF bias networks |
Applications
| Voltage Reference for ADC/DAC | Overvoltage Clamp in Sensor Interface |
|---|---|
Use Scenario: Provides stable 43 V reference for 16-bit SAR ADCs requiring <0.05% full-scale accuracy over –40 °C to +85 °C. IC Role / Device Role / Timing Role: Precision shunt reference supplying regulated voltage to ADC reference input pin. Use Value: Low tempco (+0.095 %/°C) and <0.1 µA leakage minimize gain and offset errors across temperature. | Use Scenario: Protects 3.3 V analog front-end of industrial pressure sensor from transient surges up to 60 V. IC Role / Device Role / Timing Role: Shunt clamp limiting voltage at sensor supply rail during ESD or lightning-induced transients. Use Value: Fast response and hermetic glass package ensure reliable clamping without degradation after repeated events. |
| Low-Power Bias Generator | Calibration Standard in Test Equipment |
Use Scenario: Generates fixed 43 V bias for JFET gate control in battery-powered portable instrumentation. IC Role / Device Role / Timing Role: Passive voltage source establishing gate-source bias point for depletion-mode FETs. Use Value: 500 mW rating and 93 Ω impedance enable stable bias under varying load currents up to 10 mA. | Use Scenario: Serves as traceable 43 V calibration point in handheld multimeters with NIST-traceable accuracy requirements. IC Role / Device Role / Timing Role: Primary voltage standard referenced during factory calibration and field verification. Use Value: Radiation hardness and hermetic sealing preserve calibration stability over 10+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5260B-1 | Same electrical specs but in axial DO-35 (DO-204AH) package; no MELF form factor | Requires through-hole PCB layout; unsuitable for high-density SMT assemblies | Select when legacy through-hole manufacturing or manual prototyping is required |
| BZX55-C43 | 43 V ±5%, 500 mW, but in DO-35 package with higher ZZT (100 Ω) and wider tempco (±0.09 %/°C) | Limited to commercial-grade use; not radiation-hardened or MIL-PRF-19500 up-screenable | Select for cost-sensitive commercial applications where radiation tolerance is unnecessary |
Compared with 1N5260B-1 and BZX55-C43, the 1N5260BUR-1 uniquely combines SMT-compatible MELF packaging, inherent radiation hardness, and MIL-PRF-19500 up-screening capability - making it the only choice for space-grade or high-reliability embedded systems requiring hermetic Zener references.
Availability
1N5260BUR-1 is available at Aetrix Electronics and suitable for voltage reference, overvoltage protection, and low-power bias generation requiring stable component supply across aerospace, industrial control, and test equipment programs.
Supply support for 1N5260BUR-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 components.
The 1N52xxBUR-1 series was designed to deliver JEDEC-standard Zener performance in hermetic MELF packages for mission-critical applications where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for 1N5260BUR-1?
The 1N5260BUR-1 has a nominal Zener voltage of 43 V with a tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance applies under standard test conditions at 25 °C with 3.0 mA test current, and is guaranteed across the full operating temperature range of –65 °C to +175 °C.
Is 1N5260BUR-1 suitable for space applications?
Yes, the 1N5260BUR-1 is inherently radiation-hardened per Microsemi MicroNote 050 and supports MIL-PRF-19500 up-screening. Its hermetically sealed DO-213AA glass package and metallurgical bonding make the 1N5260BUR-1 appropriate for low-earth orbit and other space-grade applications where single-event effects and total ionizing dose resistance are required.
What is the maximum reverse leakage current for 1N5260BUR-1?
The maximum reverse leakage current (IR) for the 1N5260BUR-1 is 0.1 µA when tested at VR = 31 V (73% of nominal VZ), per the Electrical Characteristics table on page 3 of the T4-LDS-0232-1 datasheet. This ultra-low leakage supports high-impedance reference designs and minimizes error in precision analog circuits using the 1N5260BUR-1.
Can 1N5260BUR-1 be used in reflow soldering processes?
Yes, the 1N5260BUR-1 is rated for solder temperature of 260 °C for 10 seconds (TSP), fully compatible with standard lead-free reflow profiles. Its DO-213AA package and tin-lead or RoHS-compliant matte-tin plating meet MIL-STD-750 Method 2026 solderability requirements, ensuring reliable joint formation during automated SMT assembly of the 1N5260BUR-1.
How does the temperature coefficient of 1N5260BUR-1 affect its regulation accuracy?
The 1N5260BUR-1 has a positive temperature coefficient of +0.095 %/°C, meaning its Zener voltage increases by approximately 40.85 mV per °C rise from 25 °C. Over a –40 °C to +85 °C range, this results in ~12.7 V total drift - critical to model in precision reference designs. The 1N5260BUR-1's predictable αVZ enables accurate compensation in systems requiring tight voltage stability.
1N5260BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 93 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 33 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
1N5260BUR-1 FAQ
1.How can I place an order for 1N5260BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5260BUR-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 1N5260BUR-1 reliable?
The price and inventory of 1N5260BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5260BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5260BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5260BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5260BUR-1?
1N5260BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5260BUR-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 1N5260BUR-1?
For technical support, including 1N5260BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5260BUR-1 requirements.
6.How does Aetrix verify that 1N5260BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5260BUR-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 1N5260BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5260BUR-1?
All 1N5260BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5260BUR-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 1N5260BUR-1 part is unused and in its original packaging.
Return procedure for 1N5260BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5260BUR-1 Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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