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Microchip Technology 1N823/TR
- Part No.:
- 1N823/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N823/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,856
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Product details
Overview
1N823/TR from Central Semiconductor (CDI Diodes) is a temperature-compensated, hermetically sealed MELF zener diode with nominal zener voltage 5.9–6.5 V, 7.5 mA test current, 48 Ω zener impedance, ±0.005 %/°C temperature coefficient, and 500 mW power rating at +50°C - used for precision voltage reference in military-grade power supply regulation.
For engineers reviewing the 1N823/TR datasheet, 1N823/TR pinout, 1N823/TR application, or 1N823/TR equivalent, key selection criteria include zener voltage tolerance, low tempco, low dynamic impedance, high-temperature stability (−65°C to +175°C), and MIL-PRF-19500/159 qualification for ruggedized systems.
Technical Context
This device belongs to the CDLL82x/1N82xUR-1 series of double-plug, metallurgically bonded zener diodes optimized for stable voltage reference under wide thermal and load variation. It features hermetic DO-213AA (MELF/SOD-80/LL34) glass package and tin/lead lead finish.
Its temperature coefficient of ±0.005 %/°C and 48 Ω zener impedance at 7.5 mA reflect design intent for minimal voltage drift across −55°C to +100°C operating range per JEDEC 5, with reverse leakage limited to 2 µA at 3 Vdc.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.9–6.5 V @ IZT = 7.5 mA - defines tight regulation window for reference circuits |
| Zener Impedance (ZZT) | 48 Ω - ensures minimal AC voltage variation under dynamic load changes |
| Temperature Coefficient | ±0.005 %/°C - enables <0.5 mV total drift over full −55°C to +100°C range |
| Power Dissipation | 500 mW @ +50°C - supports robust operation in high-reliability power rails |
| Operating Temp Range | −65°C to +175°C - qualified for aerospace, downhole, and extended-temperature industrial use |
| Reverse Leakage | 2 µA @ 3 Vdc - guarantees low standby current in battery-backed or low-power reference designs |
Pinout & Package
Package: DO-213AA (MELF, SOD-80, LL34), hermetically sealed glass case with axial leads; cathode identified by band; lead finish: tin/lead; mounting position: any.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode bias reference | Connected to lower-potential node in reverse-biased regulation configuration |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; must be held positive relative to anode for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | ±0.005 %/°C TC enables sub-millivolt stability across −55°C to +100°C |
| Hermetic DO-213AA package | Eliminates moisture-induced parameter shift and long-term drift in harsh environments |
| Double-plug metallurgical construction | Improves thermal coupling and reduces thermal resistance for consistent zener voltage |
| MIL-PRF-19500/159 qualification | Validated for JAN/JANTX/JANTXV/JANS screening levels in defense and space programs |
Applications
| Military Power Supply Reference | Aerospace Avionics Voltage Regulator |
|---|---|
Use Scenario: Precision voltage reference in radiation-hardened DC-DC converter feedback loop. IC Role / Device Role / Timing Role: Zener diode providing stable 6.2 V reference for error amplifier input. Use Value: ±0.005 %/°C tempco and 48 Ω impedance ensure <±2 mV output deviation across −55°C to +125°C ambient. | Use Scenario: Backup reference in inertial navigation system power management unit. IC Role / Device Role / Timing Role: Standby zener reference maintaining calibration integrity during main regulator fault. Use Value: Hermetic DO-213AA package prevents parametric drift under vacuum and thermal cycling stress. |
| Downhole Oilfield Sensor Biasing | High-Temperature Industrial PLC Input Protection |
Use Scenario: Biasing circuit for piezoresistive pressure transducer in geothermal drill string. IC Role / Device Role / Timing Role: Zener clamp establishing fixed excitation voltage for bridge sensor. Use Value: −65°C to +175°C operating range and 500 mW rating support continuous operation at 150°C junction temperature. | Use Scenario: Overvoltage protection and reference stabilization for analog input channel in factory automation controller. IC Role / Device Role / Timing Role: Precision shunt regulator clamping ADC reference rail against ESD transients. Use Value: 2 µA reverse leakage at 3 Vdc minimizes loading on low-current reference buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N823A/TR | Zener impedance reduced to 10 Ω (vs. 48 Ω); same VZ, tempco, and package | Better dynamic regulation in fast-transient power supplies; identical thermal and environmental specs | Select when lower AC impedance is required without changing layout or thermal design |
| CDLL823 | Same electrical specs; non-MIL screened commercial version; identical DO-213AA package | Approved for industrial but not defense/aerospace programs; no JAN/JANTXV qualification | Choose for cost-sensitive, non-military applications requiring same performance envelope |
Compared with 1N823/TR, the 1N823A/TR offers superior dynamic regulation due to 10 Ω zener impedance, while CDLL823 provides identical electrical behavior without MIL-spec screening - enabling trade-offs between transient response, qualification level, and BOM cost.
Availability
1N823/TR is available at Aetrix Electronics and suitable for military power supply reference, aerospace avionics regulation, and downhole sensor biasing requiring stable component supply across extended temperature and lifecycle-critical programs.
Supply support for 1N823/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 Diodes) is a U.S.-based manufacturer specializing in high-reliability discrete semiconductors, including zener, switching, and RF diodes for defense, aerospace, and industrial markets.
The 1N823/TR belongs to the MIL-PRF-19500/159-qualified 1N82xUR-1 series, engineered specifically for precision voltage reference in mission-critical systems where long-term stability and extreme environmental resilience are mandatory.
FAQ
What is the zener voltage range of the 1N823/TR?
The 1N823/TR has a specified zener voltage range of 5.9 V to 6.5 V at a test current of 7.5 mA. This range reflects manufacturing tolerance and ensures compatibility with circuits requiring a nominal 6.2 V reference. The actual measured VZ for any given 1N823/TR unit falls within this band under standard test conditions per JEDEC 5.
Is the 1N823/TR suitable for high-temperature operation?
Yes, the 1N823/TR is rated for continuous operation from −65°C to +175°C, with power derating starting above +50°C (4 mW/°C). Its hermetic DO-213AA glass package and metallurgical construction enable reliable performance in downhole, engine bay, and avionics applications where junction temperatures exceed 150°C - confirmed by MIL-PRF-19500/159 thermal testing.
Does the 1N823/TR have MIL-PRF-19500/159 qualification?
Yes, the 1N823/TR is explicitly listed in the CDI Diodes documentation as available in JAN, JANTX, JANTXV, and JANS versions per MIL-PRF-19500/159. This qualification covers environmental stress screening, lot traceability, and failure analysis protocols required for defense and space programs - distinguishing it from commercial equivalents like CDLL823.
What is the zener impedance of the 1N823/TR and why does it matter?
The 1N823/TR exhibits a zener impedance (ZZT) of 48 Ω at 7.5 mA test current. This value quantifies how much the output voltage varies with changes in current - critical for maintaining regulation accuracy under dynamic load conditions. Lower impedance improves line and load regulation; 48 Ω balances stability and cost for precision reference applications.
How is polarity identified on the 1N823/TR?
The 1N823/TR uses standard diode polarity marking: the banded end is the cathode and must be biased positively relative to the anode to achieve zener breakdown. This is consistent across all DO-213AA-packaged devices from CDI Diodes. Mounting orientation is unrestricted, but thermal management should account for its +6 ppm/°C axial coefficient of expansion.
1N823/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):
- 15 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)
1N823/TR FAQ
1.How can I place an order for 1N823/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N823/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 1N823/TR reliable?
The price and inventory of 1N823/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N823/TR is usually 5 days.
3.What payment methods are accepted for 1N823/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N823/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N823/TR?
1N823/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N823/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 1N823/TR?
For technical support, including 1N823/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N823/TR requirements.
6.How does Aetrix verify that 1N823/TR is sourced from the original manufacturer or authorized distributors?
All 1N823/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 1N823/TR meets industry standards.
7.What is the process for return or replacement of 1N823/TR?
All 1N823/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N823/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 1N823/TR part is unused and in its original packaging.
Return procedure for 1N823/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N823/TR Tags
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