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Microchip Technology 1N5262BUR-1
- Part No.:
- 1N5262BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5262BUR-1.pdf
- Description:
- DIODE ZENER 51V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,817
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Product details
Overview
1N5262BUR-1 from Microsemi is a 51 V, ±5% tolerance, 500 mW surface-mount Zener diode in a DO-213AA (SOD80/MLL34) MELF glass package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 2.5 mA test current, 125 Ω dynamic impedance at IZT, and operates across –65 °C to +175 °C junction temperature.
For engineers reviewing the 1N5262BUR-1 datasheet, 1N5262BUR-1 pinout, 1N5262BUR-1 application, or 1N5262BUR-1 equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (RθJA = 250 °C/W), low leakage (<0.1 µA @ 39 V), radiation-hardened construction, and MIL-PRF-19500 upscreening capability.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference, operating in the Zener breakdown region with a nominal 51 V regulation at 2.5 mA. Its metallurgically bonded glass structure ensures hermetic sealing and stable performance under thermal cycling and radiation exposure.
It exhibits a positive temperature coefficient of +0.096 %/°C, enabling predictable drift compensation in temperature-sensitive references. The DO-213AA package supports automated SMT placement while maintaining low parasitic capacitance (typ. <2 pF) and high reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 51 V ±5% at 2.5 mA - defines precise regulation point for reference and clamp circuits |
| Power Dissipation PD | 0.5 W - limits continuous power handling on FR4 PCBs without forced cooling |
| Dynamic Impedance ZZT | 125 Ω at IZT = 2.5 mA - determines output voltage stability under load variation |
| Reverse Leakage IR | <0.1 µA at 39 V - ensures minimal quiescent current in high-impedance bias networks |
| Temp Coefficient αVZ | +0.096 %/°C - enables accurate drift modeling across –65 °C to +175 °C operating range |
| Junction Temp Range TJ | –65 °C to +175 °C - supports operation in aerospace, industrial, and downhole electronics |
| Thermal Resistance RθJA | 250 °C/W - requires careful PCB copper area design to avoid derating below 50 °C ambient |
Pinout & Package
DO-213AA (SOD80 / MLL34) metallurgically bonded glass MELF package with cathode band marking; hermetically sealed, RoHS-compliant matte-tin end caps; 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 (unbanded end) | Forward conduction terminal / Zener cathode reference | Connected to circuit ground or lower potential node during Zener operation |
| Cathode (banded end) | Zener regulation terminal | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments |
| MIL-PRF-19500 upscreening option | Enables qualification for military/aerospace applications requiring enhanced reliability screening |
| Inherent radiation hardness | Validated per Microsemi MicroNote 050 - suitable for space-grade and nuclear instrumentation |
| Low capacitance (~2 pF typical) | Minimizes signal coupling and noise injection in RF-adjacent or high-speed analog reference paths |
| ESD robustness (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without parameter shift - reduces handling sensitivity in production |
Applications
| High-Voltage Reference Supply | Overvoltage Clamp Protection |
|---|---|
Use Scenario: Precision 51 V reference for ADC/DAC biasing and sensor excitation in industrial data acquisition systems. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing stable DC reference independent of load current variation. Use Value: Tight 5% tolerance and +0.096 %/°C TC enable sub-0.5% total error over –40 °C to +85 °C without calibration. | Use Scenario: Input rail protection for 48 V telecom power interfaces against transient surges and ESD events. IC Role / Device Role / Timing Role: Passive clamping element limiting voltage to 51 V before downstream LDOs or interface ICs. Use Value: Low leakage (<0.1 µA) avoids loading sensitive upstream sources; glass package withstands repeated surge stress. |
| Temperature-Stable Bias Network | Radiation-Hardened Instrumentation |
Use Scenario: Biasing amplifier stages in downhole oilfield logging tools exposed to >150 °C ambient. IC Role / Device Role / Timing Role: Zener-based current source generator where regulation voltage sets bias current via series resistor. Use Value: Extended junction temperature range (–65 °C to +175 °C) and known TC allow predictable bias current drift modeling. | Use Scenario: Voltage reference in satellite telemetry modules requiring TID tolerance and SEE immunity. IC Role / Device Role / Timing Role: Radiation-hardened shunt regulator maintaining stable supply for critical timing and control ICs. Use Value: Inherent radiation hardness per MicroNote 050 eliminates need for shielding or redundancy overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5262B-1 | Same electrical specs but in axial DO-35 (DO-204AH) package; no MELF form factor | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy board compatibility or manual prototyping is prioritized over space and automation |
| BZX55C51 | 51 V, ±5%, 500 mW in DO-35; higher ZZT (150 Ω vs. 125 Ω); no MIL-PRF-19500 screening path | Lacks radiation hardness documentation and upscreening support; limited to commercial-grade use | Select for cost-sensitive consumer applications where radiation or extended temp range is not required |
Compared with 1N5262B-1 and BZX55C51, the 1N5262BUR-1 uniquely combines SMT-ready MELF packaging, documented radiation hardness, and MIL-PRF-19500 upscreening eligibility - making it the only choice for space-constrained, high-reliability, or radiation-exposed designs.
Availability
1N5262BUR-1 is available at Aetrix Electronics and suitable for high-voltage reference supplies, overvoltage clamp protection, and radiation-hardened instrumentation requiring stable component supply across extended temperature and reliability requirements.
Supply support for 1N5262BUR-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 developed to deliver JEDEC-standard Zener regulation in hermetic surface-mount packages for defense, space, and industrial systems demanding long-term stability and environmental resilience.
FAQ
What is the Zener voltage tolerance of the 1N5262BUR-1?
The 1N5262BUR-1 has a nominal Zener voltage of 51 V with a guaranteed tolerance of ±5% at 2.5 mA test current, as specified in the Electrical Characteristics table on page 3 of the Microsemi T4-LDS-0232-1 datasheet. This tolerance applies to the "B" suffix variant and is verified under standard 25 °C conditions.
Does the 1N5262BUR-1 support MIL-PRF-19500 screening?
Yes, the 1N5262BUR-1 supports upscreening in accordance with MIL-PRF-19500, as explicitly stated in the Features section of the datasheet. Screening options depend on reliability level suffix (e.g., MQ, MX, MV, MSP) and must be specified at order time; commercial-grade units (blank suffix) do not include screening by default.
What is the maximum power dissipation for the 1N5262BUR-1 on a standard FR4 PCB?
The 1N5262BUR-1 has a steady-state power dissipation rating of 0.5 W when mounted on an FR4 PCB with 1 oz copper and the recommended footprint. Derating begins above 50 °C ambient or if end cap temperature exceeds 125 °C, per Figure 2 in the datasheet.
Is the 1N5262BUR-1 RoHS compliant?
Yes, RoHS-compliant versions of the 1N5262BUR-1 are available for commercial-grade use only, indicated by the "e3" suffix (e.g., 1N5262BUR-1e3). The standard part without "e3" uses tin-lead plating and is not RoHS compliant.
What is the temperature coefficient of the 1N5262BUR-1 and how does it affect regulation?
The 1N5262BUR-1 has a temperature coefficient of +0.096 %/°C, meaning its Zener voltage increases by approximately 49 mV per 10 °C rise above 25 °C. This predictable positive drift allows designers to compensate for thermal effects in precision reference circuits using known ambient or junction temperature data.
1N5262BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 39 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
1N5262BUR-1 FAQ
1.How can I place an order for 1N5262BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5262BUR-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 1N5262BUR-1 reliable?
The price and inventory of 1N5262BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5262BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5262BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5262BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5262BUR-1?
1N5262BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5262BUR-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 1N5262BUR-1?
For technical support, including 1N5262BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5262BUR-1 requirements.
6.How does Aetrix verify that 1N5262BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5262BUR-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 1N5262BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5262BUR-1?
All 1N5262BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5262BUR-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 1N5262BUR-1 part is unused and in its original packaging.
Return procedure for 1N5262BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5262BUR-1 Tags
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MMBZ5240B-7-F
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BZT52C5V6T-7
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BZX84C3V3LT1G
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MMSZ4682T1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
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