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Microchip Technology 1N823A/TR
- Part No.:
- 1N823A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N823A/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:7,131
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Product details
Overview
1N823A/TR from Central Semiconductor (CDI) is a temperature-compensated, hermetically sealed MELF (DO-213AA) 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 over –55°C to +100°C. It delivers precision voltage reference in high-reliability analog power supply feedback paths.
For engineers reviewing the 1N823A/TR datasheet, 1N823A/TR pinout, 1N823A/TR application, or 1N823A/TR equivalent, key selection criteria include low dynamic impedance, tight TC stability, hermetic glass packaging for extended temperature operation, and MIL-qualified variants (JAN/JANTXV) for aerospace-grade designs.
Technical Context
This device uses metallurgically bonded, double-plug construction to achieve superior thermal stability and low noise performance. Its zener impedance of 48 Ω (per CDI documentation) is measured at 7.5 mA DC test current with 10% AC superimposition per JEDEC 5, enabling stable regulation under varying load conditions.
The temperature coefficient of ±0.005 %/°C reflects compensation across –55°C to +100°C, verified per JEDEC standard No. 5. Reverse leakage remains ≤2 µA at 3 V and 25°C, supporting low-power biasing in precision reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.9–6.5 V @ IZT = 7.5 mA - ensures stable reference within 5% tolerance band for feedback loop setpoints |
| Zener Impedance (ZZT) | 10 Ω - low dynamic resistance minimizes output voltage variation under transient load changes |
| Temperature Coefficient | ±0.005 %/°C - enables <1 mV drift over full industrial temperature range (–55°C to +100°C) |
| Power Dissipation | 500 mW @ +50°C - supports continuous operation in compact PCB layouts without forced cooling |
| Operating Temperature | –65°C to +175°C - qualified for extreme-environment applications including downhole and avionics |
| Reverse Leakage (IR) | ≤2 µA @ 3 V, 25°C - preserves accuracy in high-impedance reference divider networks |
Pinout & Package
Package: DO-213AA (MELF, SOD-80, LL34), hermetically sealed glass case with tin/lead lead finish. Cathode identified by single black band; operated with banded end positive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink terminal in reverse-bias mode | Connected to ground or lower-potential node in shunt regulator configuration |
| Cathode | Current source terminal in reverse-bias mode | Banded end connects to regulated output node; defines polarity for proper Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF package | Enables operation from –65°C to +175°C with zero moisture ingress risk in sealed enclosures |
| Double-plug metallurgical construction | Reduces thermal EMF and improves long-term voltage stability vs. single-junction Zeners |
| Low zener impedance (10 Ω) | Minimizes output ripple in low-noise LDO error amplifiers and ADC reference buffers |
| MIL-PRF-19500/159 qualified variants | Supports JAN/JANTXV screening for radiation-tolerant, high-reliability military and space programs |
Applications
| Switch-Mode Power Supply Feedback | Precision Instrumentation Reference |
|---|---|
Use Scenario: Regulating output voltage in isolated flyback converters using optocoupler-coupled feedback loops. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.2 V threshold to TL431-like control ICs or discrete error amplifiers. Use Value: 10 Ω ZZT ensures <5 mV output deviation during 100 mA load transients, maintaining ±1% output regulation. | Use Scenario: Generating stable reference for 16-bit SAR ADCs in portable test equipment. IC Role / Device Role / Timing Role: Low-drift voltage reference source feeding resistive divider into ADC's REF+ input. Use Value: ±0.005 %/°C TC limits reference drift to <0.5 mV over –20°C to +70°C ambient, preserving ENOB > 14 bits. |
| Aerospace Voltage Monitor | Industrial Sensor Signal Conditioning |
Use Scenario: Monitoring 28 V aircraft bus voltage via resistive divider with overvoltage latch protection. IC Role / Device Role / Timing Role: Precision clamping element in comparator-based fault detection circuitry. Use Value: Hermetic DO-213AA package withstands 175°C solder reflow and thermal cycling per MIL-STD-883, ensuring field reliability. | Use Scenario: Biasing bridge sensors in high-temperature pressure transducers operating at 150°C. IC Role / Device Role / Timing Role: Stable excitation reference for Wheatstone bridge instrumentation amplifiers. Use Value: –65°C to +175°C operating range allows direct mounting on transducer housing without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N823UR-1 | MIL-PRF-19500/159 screened (JANTXV), same electrical specs, hermetic TO-41 metal can | Required for defense/aerospace programs requiring MIL-spec traceability and screening | Select when full MIL qualification, radiation hardness, or metal-can EMI shielding is mandatory |
| BZX85C6V2 | Plastic DO-41 package, 20 Ω ZZT, ±0.05 %/°C TC, rated only to +150°C | Suitable for commercial-grade power supplies where cost and volume outweigh extreme temp needs | Choose for cost-sensitive consumer applications where hermeticity and ultra-low TC are not required |
Compared with 1N823A/TR, 1N823UR-1 offers identical electrical performance with enhanced reliability screening and metal-can shielding, while BZX85C6V2 trades hermeticity and TC stability for lower cost and wider commercial availability - critical for balancing performance, qualification, and BOM cost.
Availability
1N823A/TR is available at Aetrix Electronics and suitable for precision voltage reference, aerospace monitoring, and high-temperature sensor conditioning requiring stable component supply across extended lifecycle programs.
Supply support for 1N823A/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, specializing in Zener, TVS, and switching diodes for demanding industrial and defense applications.
The 1N82x series targets precision voltage reference and temperature-stable regulation, with emphasis on hermetic packaging, MIL qualification, and low-drift performance in harsh environments.
FAQ
What is the nominal zener voltage of the 1N823A/TR?
The 1N823A/TR has a nominal zener voltage of 6.2 V, specified over the range 5.9 V to 6.5 V at a test current of 7.5 mA. This tolerance band ensures compatibility with standard 6.2 V reference designs while accommodating process variation. The 1N823A/TR achieves this value using temperature-compensated double-plug construction for improved long-term stability.
Is the 1N823A/TR suitable for surface-mount assembly?
Yes, the 1N823A/TR uses the DO-213AA (MELF) package, which is a leadless cylindrical surface-mount format compatible with standard reflow profiles. Its glass body and tin/lead finish support reliable solder wetting and mechanical retention. The 1N823A/TR is explicitly designated for surface-mount use in CDI's design data and shares footprint compatibility with SOD-80 and LL34 footprints.
What is the maximum power dissipation rating for the 1N823A/TR?
The 1N823A/TR is rated for 500 mW DC power dissipation at +50°C ambient, with linear derating of 4 mW/°C above that temperature. At +100°C, its usable power drops to 300 mW. This rating applies to the hermetic DO-213AA package and is validated per JEDEC thermal test methods. The 1N823A/TR maintains stable regulation within these limits due to its low ZZT and compensated TC.
Does the 1N823A/TR have MIL-qualified equivalents?
Yes - the 1N823UR-1 is the MIL-PRF-19500/159 qualified version of the same device, available in JAN, JANTX, JANTXV, and JANS grades. It matches the 1N823A/TR electrically but uses a hermetic TO-41 metal can and undergoes rigorous military screening. For programs requiring traceability and reliability beyond commercial standards, the 1N823UR-1 serves as the direct qualified counterpart to the 1N823A/TR.
How does the temperature coefficient of the 1N823A/TR compare to standard Zener diodes?
The 1N823A/TR features a temperature coefficient of ±0.005 %/°C over –55°C to +100°C - over ten times tighter than typical 6.2 V Zeners (e.g., ±0.05 %/°C). This is achieved through proprietary temperature-compensation design and double-plug junction construction. As a result, the 1N823A/TR exhibits less than 0.5 mV total drift across its full operating range, making it suitable for metrology-grade references where standard Zeners would introduce unacceptable error.
1N823A/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:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N823A/TR FAQ
1.How can I place an order for 1N823A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N823A/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/TR reliable?
The price and inventory of 1N823A/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/TR is usually 5 days.
3.What payment methods are accepted for 1N823A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N823A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N823A/TR?
1N823A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N823A/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/TR?
For technical support, including 1N823A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N823A/TR requirements.
6.How does Aetrix verify that 1N823A/TR is sourced from the original manufacturer or authorized distributors?
All 1N823A/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/TR meets industry standards.
7.What is the process for return or replacement of 1N823A/TR?
All 1N823A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N823A/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/TR part is unused and in its original packaging.
Return procedure for 1N823A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N823A/TR Tags
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