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Microchip Technology 1N5233BUR-1
- Part No.:
- 1N5233BUR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N5233BUR-1.pdf
- Description:
- DIODE ZENER 6V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,741
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Product details
Overview
1N5233BUR-1 from Microsemi is a 6.0 V, ±5% tolerance, 500 mW surface-mount Zener diode in a hermetically sealed DO-213AA (SOD80/MLL34) MELF package, designed for precision voltage regulation in low-power analog circuits, reference supplies, and overvoltage protection. It delivers 7.0 Ω dynamic impedance at 20 mA test current, operates from –65 °C to +175 °C, and exhibits +0.038 %/°C temperature coefficient.
For engineers reviewing the 1N5233BUR-1 datasheet, 1N5233BUR-1 pinout, 1N5233BUR-1 application, or 1N5233BUR-1 equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance, thermal stability across wide temperature ranges, RoHS compliance status, and compatibility with automated SMT assembly using standard MELF footprints.
Technical Context
This device functions as a two-terminal reverse-biased voltage reference, operating in its breakdown region with regulated output at 6.0 V when biased at IZT = 20 mA. Its metallurgically bonded glass construction ensures stable long-term Zener voltage and low leakage (<5.0 µA at 3.3 V).
The 1N5233BUR-1 is characterized for operation up to +175 °C junction temperature and features a thermal resistance of 100 °C/W junction-to-end-cap, enabling reliable performance in high-temperature industrial and aerospace environments when mounted per recommended FR4 footprint.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.0 V ±5% at 20 mA - defines precise regulation point for feedback loops and reference generation |
| Power Dissipation PD | 0.5 W - limits maximum continuous power handling without derating below 50 °C ambient |
| Dynamic Impedance ZZT | 7.0 Ω at 20 mA - determines output voltage variation under load current changes |
| Reverse Leakage IR | ≤5.0 µA at 3.3 V - ensures minimal error current in high-impedance bias networks |
| Temp. Coefficient αVZ | +0.038 %/°C - enables predictable voltage drift over temperature for stable references |
| Junction Temp. Range | –65 °C to +175 °C - supports operation in extreme environmental conditions without parameter shift |
| Forward Voltage VF | ≤1.1 V at 200 mA - confirms standard silicon diode conduction behavior in forward bias |
Pinout & Package
DO-213AA (SOD80/MLL34) MELF glass package: hermetically sealed, cylindrical, metallurgically bonded, cathode band marked on one end cap. End caps serve as anode and cathode terminals; polarity is defined by cathode band (banded end is cathode, operated positive relative to anode for Zener regulation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground node | Connected to circuit common; forms return path for Zener current during regulation |
| Cathode (banded end) | Regulated output node | Provides stable 6.0 V reference when reverse-biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF packaging | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical bonding | Ensures robust thermal and electrical interface between silicon die and end caps for stable RθJEC |
| Low capacitance | Typical <2 pF - preserves high-frequency signal integrity in RF bias and timing circuits |
| Radiation hardness | Inherently radiation-tolerant per MicroNote 050 - suitable for space-qualified and nuclear instrumentation |
| ESD insensitivity | Non-sensitive per MIL-STD-750 Method 1020 - simplifies handling and eliminates ESD protection circuitry |
Applications
| Industrial Sensor Signal Conditioning | Avionics Power Supply Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for bridge-based pressure transducers in factory automation systems operating from –40 °C to +85 °C. IC Role / Device Role / Timing Role: Zener diode providing fixed 6.0 V reference for op-amp biasing and ADC reference scaling. Use Value: Maintains ≤±0.5% reference accuracy across temperature due to +0.038 %/°C TC and low 7.0 Ω ZZT, reducing sensor offset drift. | Use Scenario: Generating a stable 6.0 V rail for analog monitoring circuitry in aircraft engine control units exposed to thermal cycling and vibration. IC Role / Device Role / Timing Role: Precision shunt regulator establishing primary voltage reference for fault-detection comparators. Use Value: Hermetic DO-213AA package and –65 °C to +175 °C rating ensure uninterrupted operation during rapid cabin depressurization and cold-soak conditions. |
| Medical Instrumentation Bias Network | Telecom Line Card Overvoltage Clamp |
Use Scenario: Providing bias voltage for photodiode amplifiers in portable ultrasound front-ends where low noise and long-term stability are critical. IC Role / Device Role / Timing Role: Low-leakage (≤5.0 µA) Zener regulating supply to high-impedance transimpedance amplifier input stage. Use Value: Minimal reverse leakage prevents input current errors, while low 7.0 Ω ZZT suppresses supply-induced gain variation during pulsed operation. | Use Scenario: Clamping transient surges on 48 V DC telecom power feeds to protect downstream DC-DC converters and PHY ICs. IC Role / Device Role / Timing Role: Fast-response shunt protector absorbing short-duration energy spikes before crowbar activation. Use Value: 0.5 W power rating and 100 °C/W RθJEC allow brief 100 ms surge absorption without thermal runaway when mounted on copper-pour PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5233B-1 | Same 6.0 V, ±5%, 0.5 W rating but in axial DO-35 (DO-204AH) package | Requires through-hole assembly; unsuitable for high-density SMT layouts | Select when legacy board design mandates axial leaded components or manual prototyping is preferred |
| BZX55C6V2 | 6.2 V nominal, ±5%, 500 mW, DO-35 package; higher 10 Ω ZZT at 5 mA | Higher voltage and impedance reduce accuracy in precision reference use cases | Choose only if 6.2 V output is acceptable and cost sensitivity outweighs regulation precision requirements |
Compared with 1N5233B-1 and BZX55C6V2, the 1N5233BUR-1 offers superior thermal performance (RθJEC = 100 °C/W vs. ~200 °C/W for DO-35), tighter layout compatibility for automated SMT, and lower dynamic impedance-making it optimal for compact, high-reliability, surface-mount voltage reference designs.
Availability
1N5233BUR-1 is available at Aetrix Electronics and suitable for industrial sensor conditioning, avionics reference supplies, medical instrumentation bias networks, and telecom line card protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1N5233BUR-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 high-temperature analog and mixed-signal components.
The 1N5233BUR-1 belongs to Microsemi's legacy 1N52xxBUR-1 Zener series, engineered for mission-critical voltage regulation in aerospace, defense, and industrial systems demanding hermetic reliability and extreme temperature resilience.
FAQ
What is the Zener voltage tolerance and test current for the 1N5233BUR-1?
The 1N5233BUR-1 has a nominal Zener voltage of 6.0 V with a ±5% tolerance, verified at a test current IZT of 20 mA. This tolerance is indicated by the "B" suffix in the part number and ensures predictable regulation within 5.7 V to 6.3 V under specified thermal conditions.
Does the 1N5233BUR-1 support RoHS compliance?
Yes, the 1N5233BUR-1 is available in RoHS-compliant versions (marked with "e3" suffix) for commercial-grade applications. Non-RoHS variants are also offered, but RoHS compliance applies only to commercial-grade units-not screened military versions.
What is the maximum junction temperature and thermal resistance of the 1N5233BUR-1?
The 1N5233BUR-1 supports a junction temperature range of –65 °C to +175 °C. Its thermal resistance junction-to-end-cap (RθJEC) is 100 °C/W, measured with the end cap held at <125 °C, enabling reliable operation in high-temperature industrial and aerospace environments.
How does the temperature coefficient of the 1N5233BUR-1 affect its voltage stability?
The 1N5233BUR-1 has a temperature coefficient of +0.038 %/°C, meaning its Zener voltage increases by approximately 2.28 mV per °C rise from 25 °C. This low, positive TC enables predictable and minimal drift in precision reference applications across –65 °C to +175 °C.
Can the 1N5233BUR-1 be used in high-frequency circuits despite being a Zener diode?
Yes-the 1N5233BUR-1 exhibits typical capacitance below 2 pF (per Figure 3), making it suitable for RF bias networks and high-speed clamping applications. Its low capacitance and fast response to transient overvoltages stem from the small junction area inherent to the DO-213AA MELF structure.
1N5233BUR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.5 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
1N5233BUR-1 FAQ
1.How can I place an order for 1N5233BUR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5233BUR-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 1N5233BUR-1 reliable?
The price and inventory of 1N5233BUR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5233BUR-1 is usually 5 days.
3.What payment methods are accepted for 1N5233BUR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5233BUR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5233BUR-1?
1N5233BUR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5233BUR-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 1N5233BUR-1?
For technical support, including 1N5233BUR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5233BUR-1 requirements.
6.How does Aetrix verify that 1N5233BUR-1 is sourced from the original manufacturer or authorized distributors?
All 1N5233BUR-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 1N5233BUR-1 meets industry standards.
7.What is the process for return or replacement of 1N5233BUR-1?
All 1N5233BUR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5233BUR-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 1N5233BUR-1 part is unused and in its original packaging.
Return procedure for 1N5233BUR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5233BUR-1 Tags
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BZT52C5V6T-7
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BZX84C3V3LT1G
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BZT52C15S-7-F
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MM5Z5V1ST1G
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SMAJ4744A-TP
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