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Microchip Technology 1N4568AUR-1/TR
- Part No.:
- 1N4568AUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4568AUR-1/TR.pdf
- Description:
- DIODE ZENER 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,143
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Product details
Overview
1N4568AUR-1/TR from Microsemi is a temperature-compensated Zener reference diode in DO-213AA (MELF) glass package, rated for 5.0 V nominal Zener voltage at 0.5 mA test current, with ±0.001 %/°C temperature coefficient and 10 mV max voltage stability over −55°C to +100°C. It serves as a precision voltage reference in analog instrumentation and aerospace power regulation circuits.
For engineers reviewing the 1N4568AUR-1/TR datasheet, 1N4568AUR-1/TR pinout, 1N4568AUR-1/TR application, or 1N4568AUR-1/TR equivalent, key selection criteria include its ultra-low tempco, hermetic MELF construction, 100 Ω max Zener impedance at 0.5 mA, −65°C to +175°C operating range, and MIL-PRF-19500/452 qualification for high-reliability systems.
Technical Context
This device belongs to Microsemi's CDLL4565–CDLL4584A family of metallurgically bonded, double-plug Zener diodes engineered for low-drift voltage referencing. Its compensation architecture minimizes thermal hysteresis and long-term drift via matched junctions within a single hermetically sealed glass envelope.
The 1N4568AUR-1/TR operates in the 0.5 mA low-current regime, delivering 5.0 V ±1% tolerance with 10 mV max voltage variation across −55°C to +100°C per Note 1, and exhibits 100 Ω dynamic impedance (ZZT) measured with 60 Hz, 0.05 mA AC superimposed on DC bias per Note 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.0 V ±1% at IZT = 0.5 mA - defines stable reference point for calibration-grade circuits |
| Tempco (TC) | ±0.001 %/°C - enables sub-10 ppm/°C drift performance in wide-temperature environments |
| Voltage Stability | ≤10 mV over −55°C to +100°C - meets JEDEC 5 for monotonic, bounded variation |
| Zener Impedance (ZZT) | 100 Ω max at 0.5 mA, 60 Hz - ensures minimal AC-induced reference perturbation |
| Package | DO-213AA (MELF, SOD-80, LL34) - hermetic glass, surface-mountable, axial COE ≈ +6 ppm/°C |
| Max Power Dissipation | 500 mW @ +50°C, derated 4 mW/°C above - supports operation up to +175°C junction |
| Reverse Leakage | 2 µA @ VR = 3 V, 25°C - negligible error contribution in high-impedance bias networks |
Pinout & Package
DO-213AA (MELF) glass package: cylindrical, leadless, hermetically sealed; cathode identified by single dark band; axial coefficient of expansion ≈ +6 ppm/°C; mounting position unrestricted.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-biased operation requires cathode at higher potential |
| Cathode | Reference output node | Banded end; supplies stable 5.0 V when reverse-biased at 0.5 mA; polarity critical for correct biasing |
Key Features
| Feature | Design Value |
|---|---|
| Temperature Compensation | Double-plug metallurgical construction achieves ±0.001 %/°C tempco - eliminates external trimming in precision references |
| Hermetic Sealing | DO-213AA glass enclosure prevents moisture ingress and parametric shift - required for MIL-PRF-19500/452 JANTXV screening |
| Low-Current Operation | Specified at 0.5 mA - enables use in ultra-low-power sensor front-ends and battery-backed systems |
| MIL-Spec Qualification | Qualified to MIL-PRF-19500/452 (JAN/JANTX/JANTXV/JANS) - supports aerospace, defense, and downhole applications |
Applications
| High-Accuracy ADC Reference | Aerospace Power Monitor |
|---|---|
Use Scenario: Providing reference voltage for 16-bit SAR ADCs in satellite telemetry systems. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC internal conversion ladder. Use Value: 10 mV max drift over −55°C to +100°C ensures <0.02 LSB error across mission temperature range. | Use Scenario: Monitoring regulated bus voltage in radiation-hardened power distribution units. IC Role / Device Role / Timing Role: Stable 5.0 V reference for comparator threshold generation. Use Value: ±0.001 %/°C tempco prevents false trip events during orbital thermal cycling. |
| Downhole Sensor Calibration | Avionics Analog Subsystem |
Use Scenario: Calibrating strain-gauge bridges in oil/gas well logging tools operating at 175°C. IC Role / Device Role / Timing Role: Primary voltage standard for ratiometric sensor excitation and signal conditioning. Use Value: Hermetic DO-213AA package and 500 mW rating sustain reliability at +175°C junction temperature. | Use Scenario: Biasing op-amps and setting thresholds in flight control analog interfaces. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for analog signal chain integrity. Use Value: 100 Ω ZZT minimizes noise coupling into sensitive analog paths under varying load conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4568A | Same electrical specs and DO-213AA package; identical Zener voltage, tempco, and stability - direct functional match | No difference; CDLL4568A is the commercial-grade counterpart to 1N4568AUR-1/TR's military screening | Select CDLL4568A for non-military industrial use where MIL-PRF-19500 qualification is not required |
| 1N4568AUR-1 | Identical die and package; differs only in tape-and-reel packaging (TR suffix denotes reel) - same electrical and thermal behavior | No functional difference; TR variant optimized for automated SMT placement | Choose 1N4568AUR-1/TR when high-volume pick-and-place assembly is required |
Compared with CDLL4568A and 1N4568AUR-1, the 1N4568AUR-1/TR delivers identical precision performance while meeting JANTXV-level screening and supporting automated manufacturing - making it optimal for high-reliability, volume production programs.
Availability
1N4568AUR-1/TR is available at Aetrix Electronics and suitable for aerospace power monitoring, downhole sensor calibration, avionics analog subsystems, and high-accuracy ADC reference designs requiring stable component supply across extended temperature and lifecycle demands.
Supply support for 1N4568AUR-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
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-tolerant, and precision analog components for defense, aerospace, and industrial markets.
The 1N4568AUR-1/TR belongs to Microsemi's CDLL4565–CDLL4584A family of temperature-compensated Zener diodes, designed specifically for applications demanding ultra-stable voltage references under extreme thermal and environmental stress.
FAQ
What is the Zener voltage tolerance of the 1N4568AUR-1/TR?
The 1N4568AUR-1/TR has a nominal Zener voltage of 5.0 V with a tolerance of ±1% at IZT = 0.5 mA and 25°C. This tolerance remains valid across its qualified temperature range of −55°C to +100°C per JEDEC Standard No. 5, ensuring predictable performance in calibrated systems without recalibration.
Is the 1N4568AUR-1/TR hermetically sealed?
Yes, the 1N4568AUR-1/TR uses a DO-213AA glass package that is hermetically sealed. This construction prevents moisture ingress and long-term parametric drift, satisfying MIL-PRF-19500/452 requirements for high-reliability applications such as aerospace and downhole instrumentation.
What is the maximum operating temperature for the 1N4568AUR-1/TR?
The 1N4568AUR-1/TR supports an operating temperature range of −65°C to +175°C. Its 500 mW power dissipation rating at +50°C, with 4 mW/°C derating above that point, allows sustained operation at full rated power up to +175°C junction temperature in properly heatsinked or low-power configurations.
Does the 1N4568AUR-1/TR require external compensation?
No, the 1N4568AUR-1/TR incorporates internal temperature compensation via metallurgically bonded double-plug construction. Its ±0.001 %/°C temperature coefficient is achieved inherently, eliminating the need for external thermistors, resistive networks, or calibration routines in precision reference designs.
How does the 1N4568AUR-1/TR differ from the CDLL4568A?
The 1N4568AUR-1/TR and CDLL4568A share identical electrical specifications, DO-213AA packaging, and Zener characteristics. The distinction lies in qualification: 1N4568AUR-1/TR is screened to JANTXV level per MIL-PRF-19500/452, whereas CDLL4568A is commercial-grade. Both deliver 5.0 V ±1% at 0.5 mA with ±0.001 %/°C tempco.
1N4568AUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4568AUR-1/TR FAQ
1.How can I place an order for 1N4568AUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4568AUR-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 1N4568AUR-1/TR reliable?
The price and inventory of 1N4568AUR-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 1N4568AUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4568AUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4568AUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4568AUR-1/TR?
1N4568AUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4568AUR-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 1N4568AUR-1/TR?
For technical support, including 1N4568AUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4568AUR-1/TR requirements.
6.How does Aetrix verify that 1N4568AUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4568AUR-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 1N4568AUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4568AUR-1/TR?
All 1N4568AUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4568AUR-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 1N4568AUR-1/TR part is unused and in its original packaging.
Return procedure for 1N4568AUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4568AUR-1/TR Tags
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