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Microchip Technology 1N823A-1/TR
- Part No.:
- 1N823A-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N823A-1/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,359
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Product details
Overview
1N823A-1/TR from Central Semiconductor (CDI) is a temperature-compensated, hermetically sealed MELF Zener diode with nominal zener voltage 6.2 V, 10 Ω zener impedance at 7.5 mA test current, and ±0.005 %/°C temperature coefficient. It operates from –65°C to +175°C and delivers stable reference voltage in precision power supply feedback loops.
For engineers reviewing the 1N823A-1/TR datasheet, 1N823A-1/TR pinout, 1N823A-1/TR application, or 1N823A-1/TR equivalent, key selection criteria include low TC, tight VZ tolerance, high-temperature reliability, and DO-213AA package compatibility with automated SMT placement.
Technical Context
This device uses metallurgically bonded double-plug construction to achieve superior thermal stability and low voltage drift over temperature. Its zener impedance of 10 Ω at IZT = 7.5 mA ensures minimal AC ripple coupling into reference nodes.
The ±0.005 %/°C temperature coefficient is measured across –55°C to +100°C per JEDEC Std 5, enabling use in environments where reference drift must remain below ±0.5 mV over full industrial range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.9–6.5 V range at IZT = 7.5 mA - defines precise DC reference level for regulation or sensing |
| Zener Impedance (ZZT) | 10 Ω at IZT = 7.5 mA - limits AC error contribution in feedback paths |
| Temperature Coefficient | ±0.005 %/°C (–55°C to +100°C) - enables sub-mV drift in high-stability references |
| Power Dissipation | 500 mW @ +50°C, derated 4 mW/°C above - supports operation up to +175°C ambient with appropriate layout |
| Package | DO-213AA (MELF, SOD-80) - surface-mount, hermetically sealed glass case for moisture resistance and long-term stability |
| Reverse Leakage | 2 µA @ 3 VR, 25°C - negligible loading on high-impedance bias networks |
Pinout & Package
DO-213AA (MELF) glass package: axial, cylindrical, leadless, hermetically sealed. Cathode identified by single black band. No discrete pins - terminals are axial ends of the cylinder.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink under reverse bias | Connected to lower-potential node in shunt regulator configuration |
| Cathode (banded end) | Reference voltage output | Provides stable 6.2 V relative to anode; polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | ±0.005 %/°C TC enables <±0.3 mV drift over –40°C to +85°C in regulated supplies |
| Hermetic MELF construction | DO-213AA glass seal prevents moisture ingress and parameter shift over 20+ year deployments |
| Low zener impedance | 10 Ω at 7.5 mA minimizes output noise coupling in analog sensor excitation circuits |
| High-temperature rating | Rated to +175°C junction allows use in under-hood automotive or downhole oil/gas electronics |
Applications
| Industrial Power Supply Reference | Aerospace Voltage Monitor |
|---|---|
Use Scenario: Precision feedback node in isolated DC-DC converter regulating ±12 V rails for PLC I/O modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.2 V setpoint to error amplifier input. Use Value: Low TC and 10 Ω ZZT maintain output regulation within ±0.1% over –40°C to +70°C ambient. | Use Scenario: Redundant reference in radiation-tolerant avionics power monitor detecting >±2% rail deviation. IC Role / Device Role / Timing Role: Primary voltage threshold element in comparator-based fault detection circuit. Use Value: Hermetic MELF package ensures zero parametric drift after 10 krad(Si) total ionizing dose exposure. |
| Downhole Sensor Excitation | Medical Imaging Bias Supply |
Use Scenario: Stable excitation source for piezoresistive pressure transducers operating at 150°C in oil well logging tools. IC Role / Device Role / Timing Role: Zener-biased current source delivering constant 1 mA to bridge sensor. Use Value: +175°C max operating temperature and ±0.005 %/°C TC ensure <0.5% gain error over full downhole thermal cycle. | Use Scenario: High-stability bias for photomultiplier tube (PMT) dynode chain in PET scanner front-end. IC Role / Device Role / Timing Role: Cascaded Zener string establishing graded dynode potentials with minimal thermal drift. Use Value: Sub-10 Ω impedance suppresses shot-noise modulation of PMT gain during fast pulse acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2 | 100 Ω ZZT at 5 mA; ±0.05 %/°C TC; SOT-23 package | Lower cost, lower stability; suitable for non-critical consumer supplies | Select only when ±1% VZ tolerance and >1 mV/°C drift are acceptable |
| 1N823UR-1 | Identical electrical specs; JAN/JANTXV screened, hermetic TO-41 metal can | MIL-STD-883 qualified; required for space-grade or defense programs | Choose when radiation hardness, extended burn-in, or military traceability is mandated |
Compared with BZX84-C6V2, the 1N823A-1/TR offers 10× lower impedance and 10× tighter TC for metrology-grade references; versus 1N823UR-1, it trades screening rigor for commercial SMT manufacturability while retaining identical core performance.
Availability
1N823A-1/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace monitoring systems, downhole instrumentation, and medical imaging bias circuits requiring stable component supply across extended temperature ranges.
Supply support for 1N823A-1/TR 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
Central Semiconductor Corp. (CDI) designs and manufactures high-reliability discrete semiconductors, including Zener, Schottky, and switching diodes, with emphasis on ruggedized and temperature-stable devices.
The 1N823A-1/TR belongs to CDI's temperature-compensated MELF Zener family, engineered specifically for precision voltage reference applications demanding long-term stability and extreme-temperature operation.
FAQ
What is the nominal zener voltage and tolerance of the 1N823A-1/TR?
The 1N823A-1/TR has a nominal zener voltage of 6.2 V with a specified range of 5.9 V to 6.5 V at IZT = 7.5 mA. This 6.2 V value serves as the primary reference point in feedback networks, and the ±0.3 V window reflects manufacturing control for precision applications where tight initial calibration is required.
Does the 1N823A-1/TR have a defined cathode marking, and how is polarity identified?
Yes - the 1N823A-1/TR uses a single black band on the glass body to identify the cathode terminal. When mounted in circuit, the banded (cathode) end must be held at higher potential than the anode to operate in reverse breakdown. Forward conduction occurs if polarity is reversed, potentially damaging the device in sustained bias.
What is the maximum operating temperature and power derating behavior of the 1N823A-1/TR?
The 1N823A-1/TR is rated for continuous operation from –65°C to +175°C. Its DC power dissipation is 500 mW at +50°C ambient, decreasing linearly by 4 mW per °C above that point. At +125°C ambient, the allowable dissipation drops to 200 mW, requiring careful thermal design in high-density layouts.
How does the temperature coefficient of the 1N823A-1/TR compare to standard Zener diodes?
The 1N823A-1/TR exhibits a temperature coefficient of ±0.005 %/°C over –55°C to +100°C, which is 10× tighter than typical 6.2 V Zeners (e.g., ±0.05 %/°C). This ultra-low TC is achieved via double-plug metallurgical construction and enables reference stability better than ±0.5 mV across wide ambient swings - critical for metrology and aerospace systems.
Is the 1N823A-1/TR compatible with reflow soldering, and what is its package type?
Yes - the 1N823A-1/TR uses the DO-213AA (MELF/SOD-80) glass package, qualified for standard lead-free reflow profiles (J-STD-020). Its hermetic seal and axial symmetry allow reliable placement and soldering in automated SMT lines without cracking or leakage degradation.
1N823A-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N823A-1/TR FAQ
1.How can I place an order for 1N823A-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N823A-1/TR 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 1N823A-1/TR reliable?
The price and inventory of 1N823A-1/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N823A-1/TR is usually 5 days.
3.What payment methods are accepted for 1N823A-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N823A-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N823A-1/TR?
1N823A-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N823A-1/TR 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 1N823A-1/TR?
For technical support, including 1N823A-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N823A-1/TR requirements.
6.How does Aetrix verify that 1N823A-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N823A-1/TR 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 1N823A-1/TR meets industry standards.
7.What is the process for return or replacement of 1N823A-1/TR?
All 1N823A-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N823A-1/TR, 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 1N823A-1/TR part is unused and in its original packaging.
Return procedure for 1N823A-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N823A-1/TR Tags
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