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Microchip Technology 1N5234BUR-1
- Part No.:
- 1N5234BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5234BUR-1.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,281
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Product details
Overview
1N5234BUR-1 from Microsemi is a 6.2 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD-80/MELF) glass package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 7 Ω dynamic impedance at 20 mA test current, operates across –65 °C to +175 °C, and exhibits +0.045 %/°C temperature coefficient.
For engineers reviewing the 1N5234BUR-1 datasheet, 1N5234BUR-1 pinout, 1N5234BUR-1 application, or 1N5234BUR-1 equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance, hermetic MELF packaging for thermal stability, MIL-PRF-19500 upscreening eligibility, and RoHS-compliant commercial-grade availability.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference, operating in its controlled breakdown region with specified Zener current (IZT = 20 mA). Its metallurgically bonded glass construction ensures stable junction characteristics and minimal capacitance (<2 pF typical), critical for noise-sensitive biasing and regulation.
The 1N5234BUR-1 exhibits a positive temperature coefficient (+0.045 %/°C), making it suitable for temperature-compensated references when paired with negative-coefficient devices. Thermal resistance is 250 °C/W (junction-to-ambient on FR4) and 100 °C/W (junction-to-end-cap), enabling predictable power derating above 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.2 V ±5% at IZT = 20 mA - defines nominal regulation point with tight production control |
| Power Dissipation PD | 0.5 W maximum - limits continuous regulation current to ~80 mA at 6.2 V without heatsinking |
| Dynamic Impedance ZZT | 7.0 Ω at IZT = 20 mA - ensures stable output under load transients and low output ripple |
| Reverse Leakage IR | 5.0 µA max at VR = 3.8 V - guarantees minimal quiescent current in high-impedance reference networks |
| Temp. Coefficient αVZ | +0.045 %/°C - enables predictable drift compensation in wide-temperature industrial designs |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in harsh environments including aerospace and downhole electronics |
| Forward Voltage VF | 1.1 V max at IF = 200 mA - allows safe forward conduction during fault conditions or polarity checks |
Pinout & Package
DO-213AA (SOD-80 / MELF) hermetically sealed glass package: cylindrical body with tin-lead or RoHS-compliant matte-tin end-cap terminations; cathode indicated by single black band; polarity requires banded end to be positive during Zener operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Regulated output node | Connected to higher-potential rail; reverse-biased to maintain 6.2 V drop across load |
| Anode (unbanded end) | Reference ground node | Connected to circuit common; completes Zener current path through series resistor |
Key Features
| Feature | Design Value |
|---|---|
| Metallurgically bonded glass construction | Eliminates interfacial delamination risk under thermal cycling, ensuring long-term regulation stability |
| Hermetic MELF package (DO-213AA) | Provides superior moisture resistance and thermal conductivity vs. plastic SMD packages |
| Minimal capacitance (~2 pF typical) | Reduces high-frequency coupling and noise injection in precision analog signal paths |
| MIL-PRF-19500 upscreening option | Enables qualification for military/aerospace applications requiring enhanced reliability screening |
| ESD robustness (MIL-STD-750 Method 1020) | Withstands >4 kV HBM without parameter shift, simplifying handling in automated assembly |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference Supply |
|---|---|
Use Scenario: Providing stable 6.2 V bias for op-amp instrumentation amplifiers in 4–20 mA loop transmitters. IC Role / Device Role / Timing Role: Precision voltage reference for analog front-end gain-setting and offset calibration. Use Value: Low dynamic impedance (7 Ω) minimizes output voltage variation under varying sensor loading, improving measurement repeatability. |
Use Scenario: Generating a clean 6.2 V supply for ADC reference inputs in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-noise, low-current Zener shunt regulator replacing linear regulators in ultra-low-quiescent systems. Use Value: 5.0 µA leakage at 3.8 V enables >10-year battery life in always-on monitoring applications. |
| Overvoltage Clamp in RS-485 Transceivers | Temperature-Compensated Reference Pair |
Use Scenario: Protecting differential bus lines against ESD and surge events exceeding ±15 kV per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-acting shunt clamp limiting line voltage to 6.2 V during transient events. Use Value: Hermetic glass construction withstands repeated surge stress without parameter degradation or leakage increase. |
Use Scenario: Building a zero-drift 5.0 V reference using 1N5234BUR-1 (+0.045 %/°C) and 1N5230BUR-1 (–0.030 %/°C). IC Role / Device Role / Timing Role: Positive-TC Zener element in matched-pair temperature compensation network. Use Value: Precisely specified temperature coefficient enables <±10 ppm/°C combined drift in calibrated instrumentation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5234B-1 (DO-35 axial) | Same electrical specs but axial-leaded DO-35 package; no MELF thermal performance or surface-mount compatibility | Preferred for prototyping, through-hole boards, or legacy designs where reflow is not used | Select 1N5234B-1 only when board assembly process prohibits SMT or footprint constraints require axial leads |
| BZX55C6V2 (ON Semiconductor) | 6.2 V ±5%, 500 mW, DO-35 package; higher ZZT (10 Ω), wider temp range (–65 °C to +175 °C), no MIL-PRF-19500 option | Suitable for cost-sensitive commercial applications but lacks upscreening path for defense programs | Choose BZX55C6V2 for high-volume consumer products where MIL compliance is unnecessary and DO-35 is acceptable |
Compared with 1N5234B-1 and BZX55C6V2, the 1N5234BUR-1 uniquely combines MELF packaging for superior thermal management, hermetic reliability, and direct upscreening eligibility-making it the only choice for space-constrained, high-reliability SMT designs requiring extended temperature operation and military qualification readiness.
Availability
1N5234BUR-1 is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference supplies, RS-485 overvoltage clamping, and temperature-compensated reference designs requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N5234BUR-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 was engineered to deliver JEDEC-standard Zener performance in ruggedized surface-mount form, addressing demand for hermetic, thermally stable, and MIL-qualified voltage references in mission-critical embedded systems.
FAQ
What is the Zener voltage tolerance for 1N5234BUR-1?
The 1N5234BUR-1 has a nominal Zener voltage of 6.2 V with a guaranteed tolerance of ±5%, as indicated by the "B" suffix in the part number per Microsemi's nomenclature. This tolerance is verified at IZT = 20 mA and TA = 25 °C, and applies across the full operating temperature range when derated per the published power curve.
Does 1N5234BUR-1 support MIL-PRF-19500 screening?
Yes, the 1N5234BUR-1 is eligible for upscreening per MIL-PRF-19500 specifications. While the base commercial version (UR-1) is un-screened, Microsemi offers screened variants with MQ, MX, MV, or MSP prefixes for JAN, JANTX, JANTXV, and JANS levels respectively-each requiring specific ordering codes and qualification testing.
What is the maximum steady-state power dissipation for 1N5234BUR-1?
The 1N5234BUR-1 has a rated steady-state power dissipation of 0.5 W. This rating assumes mounting on an FR4 PCB with 1 oz copper and the recommended footprint; derating is required above 50 °C ambient or if end-cap temperature exceeds 125 °C, per Figure 2 in the datasheet.
Is 1N5234BUR-1 RoHS compliant?
Yes, RoHS-compliant versions of 1N5234BUR-1 are available with the "e3" suffix (e.g., 1N5234BUR-1e3), featuring annealed matte-tin plating on end caps. RoHS compliance is offered for commercial-grade units only; screened military variants retain tin-lead terminations per specification requirements.
What package type does 1N5234BUR-1 use?
The 1N5234BUR-1 uses the DO-213AA package-also known as SOD-80 or MELF-featuring a metallurgically bonded hermetic glass cylinder with tin-lead or RoHS-compliant matte-tin end-cap terminations and a single cathode band marking.
1N5234BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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
1N5234BUR-1 FAQ
1.How can I place an order for 1N5234BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5234BUR-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 1N5234BUR-1 reliable?
The price and inventory of 1N5234BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5234BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5234BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5234BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5234BUR-1?
1N5234BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5234BUR-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 1N5234BUR-1?
For technical support, including 1N5234BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5234BUR-1 requirements.
6.How does Aetrix verify that 1N5234BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5234BUR-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 1N5234BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5234BUR-1?
All 1N5234BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5234BUR-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 1N5234BUR-1 part is unused and in its original packaging.
Return procedure for 1N5234BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5234BUR-1 Tags
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