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Microchip Technology CDLL4567AE3/TR
- Part No.:
- CDLL4567AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
CDLL4567AE3/TR.pdf
- Description:
- DIODE ZENER 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
CDLL4567AE3/TR from Microsemi is a temperature-compensated zener reference diode in DO-213AA (MELF) glass package, rated for 6.2 V nominal zener voltage at 0.5 mA test current, with ±0.002 %/°C tempco and 10 mV max voltage stability over 0 to +75°C. It delivers precision voltage reference in low-power analog circuits requiring high thermal stability.
For engineers reviewing the CDLL4567AE3/TR datasheet, CDLL4567AE3/TR pinout, CDLL4567AE3/TR application, or CDLL4567AE3/TR equivalent, this part serves as a hermetically sealed, surface-mountable reference diode optimized for metrology-grade instrumentation, aerospace power monitoring, and high-reliability voltage calibration systems where long-term drift and thermal hysteresis must be minimized.
Technical Context
This device uses metallurgically bonded, double-plug construction to achieve ultra-low temperature coefficient and tight voltage stability. Its zener impedance is fixed at 200 Ω at 0.5 mA, and it operates within a low-current range of 0.5–4.0 mA, enabling use in battery-powered or energy-constrained reference designs.
The DO-213AA MELF package provides hermetic sealing and a coefficient of expansion (+6 ppm/°C) matched to common PCB substrates. Polarity is defined by cathode banding, and operation requires reverse-bias configuration with cathode positive relative to anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V at IZT = 0.5 mA - stable reference point for precision analog feedback loops |
| Tempco (TC) | ±0.002 %/°C - enables sub-10 ppm/°C total drift across 0 to +75°C operating range |
| Voltage Stability | ≤10 mV max variation - ensures repeatable calibration without recalibration over temperature |
| Zener Impedance (ZZT) | 200 Ω - maintains regulation accuracy under small-signal load transients |
| Operating Current Range | 0.5–4.0 mA - supports ultra-low-power reference design without sacrificing stability |
| Package | DO-213AA (MELF, SOD-80, LL34) - hermetically sealed glass case for moisture and contamination immunity |
| Max Power Dissipation | 500 mW @ +50°C - allows operation in compact enclosures with minimal heatsinking |
Pinout & Package
DO-213AA (MELF) glass package: axial, cylindrical, leadless surface-mount device with cathode band marking. Dimensions: D = 1.60–1.70 mm, G = 3.30–3.70 mm, F = 0.41–0.55 mm. Lead finish: Tin/Lead. Mounting position: any orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; reverse-bias return path for zener current |
| Cathode | Reference output node | Banded end; supplies stable 6.2 V when biased with 0.5 mA current source |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | ±0.002 %/°C tempco achieved via double-plug metallurgical construction - eliminates need for external trimming in grade-A references |
| Hermetic MELF packaging | DO-213AA glass seal - prevents parametric shift due to humidity or outgassing in space/aerospace environments |
| Low-current operation | Validated performance at 0.5 mA - enables use with high-value bias resistors in micropower sensor signal chains |
| Voltage stability | ≤10 mV max deviation over 0 to +75°C - meets MIL-PRF-19500/452 Class A requirements for reference repeatability |
Applications
| High-Precision ADC Reference | Aerospace Power Monitor |
|---|---|
Use Scenario: Providing reference voltage for 16-bit+ successive-approximation ADCs in data acquisition modules. IC Role / Device Role / Timing Role: Zener reference diode supplying stable 6.2 V to ADC's VREF pin. Use Value: Sub-10 mV thermal drift ensures <0.01% full-scale error contribution over industrial temperature range. | Use Scenario: Monitoring bus voltage in satellite power distribution units with radiation-hardened analog front ends. IC Role / Device Role / Timing Role: Primary voltage reference for isolated DC-DC converter feedback and telemetry scaling. Use Value: Hermetic MELF package and -55°C to +100°C qualified variant (CDLL4567A) ensure reliability in vacuum and thermal cycling. |
| Calibration Standard for Multimeters | Medical Sensor Signal Conditioning |
Use Scenario: Embedded reference in handheld digital multimeters requiring NIST-traceable accuracy. IC Role / Device Role / Timing Role: Stable 6.2 V source for auto-zeroing and gain calibration routines. Use Value: ≤10 mV voltage stability over 0 to +75°C enables factory calibration validity for 12 months without drift correction. | Use Scenario: Biasing precision op-amps in implantable ECG front-end amplifiers. IC Role / Device Role / Timing Role: Low-noise, low-current reference for rail-to-rail input stage biasing. Use Value: 0.5 mA operating point minimizes self-heating while maintaining 200 Ω zener impedance for clean signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener reference diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4567A | Same 6.2 V / 0.5 mA / ±0.002 %/°C spec, but rated for -55°C to +100°C and 20 mV stability | Broader temperature qualification supports extended-range military/aerospace deployments | Select CDLL4567A when full MIL-PRF-19500/452 Class A environmental compliance is required |
| 1N4567AUR-1 | Identical electrical specs and tempco, but in plastic-molded DO-213AB (SOD-80) package with different mechanical tolerances | Lacks hermetic seal; unsuitable for high-humidity or long-life vacuum applications | Choose 1N4567AUR-1 only for cost-sensitive commercial designs where moisture resistance is not critical |
Compared with CDLL4567AE3/TR, CDLL4567A offers wider temperature qualification at the cost of slightly higher voltage drift (20 mV vs. 10 mV), while 1N4567AUR-1 trades hermetic reliability for lower cost and non-hermetic packaging - selection depends on environmental severity and lifetime requirements.
Availability
CDLL4567AE3/TR is available at Aetrix Electronics and suitable for high-reliability voltage reference, aerospace power monitoring, and medical sensor conditioning applications requiring stable component supply and traceable sourcing.
Supply support for CDLL4567AE3/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 (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 CDLL4565–CDLL4584A series was designed specifically for metrology-grade voltage reference applications demanding ultra-low tempco, hermetic packaging, and MIL-PRF-19500/452 qualification.
FAQ
What is the nominal zener voltage and test current for CDLL4567AE3/TR?
The CDLL4567AE3/TR has a nominal zener voltage of 6.2 V measured at a test current (IZT) of 0.5 mA. This value is specified per Microsemi's electrical characteristics table and applies across the 0 to +75°C temperature range with ≤10 mV maximum deviation. The CDLL4567AE3/TR is optimized for low-current precision reference use, and its stability is validated under these exact conditions.
Is CDLL4567AE3/TR hermetically sealed, and what package type does it use?
Yes, the CDLL4567AE3/TR is hermetically sealed in a DO-213AA glass package, also known as MELF, SOD-80, or LL34. This construction provides immunity to moisture ingress and long-term parameter stability, making it suitable for aerospace, medical, and high-reliability applications. The CDLL4567AE3/TR's hermetic seal is confirmed in the "CASE" designation and design data section of the official Microsemi documentation.
What is the temperature coefficient and voltage stability specification for CDLL4567AE3/TR?
The CDLL4567AE3/TR has a temperature coefficient of ±0.002 %/°C and a maximum voltage stability of 10 mV over the 0 to +75°C operating range. These values are explicitly listed in the CDLL4565–CDLL4584A family table and reflect its classification as a high-stability, temperature-compensated zener reference diode. The CDLL4567AE3/TR achieves this performance through metallurgically bonded double-plug construction.
Can CDLL4567AE3/TR be used in reverse-bias configuration only?
Yes, the CDLL4567AE3/TR is a zener diode and must be operated in reverse-bias mode, with the banded (cathode) end held positive relative to the anode. Forward conduction is not intended or characterized. The polarity marking and operational instructions are clearly stated in the "POLARITY" note of the Microsemi design data sheet for CDLL4567AE3/TR.
What is the maximum power dissipation rating for CDLL4567AE3/TR?
The CDLL4567AE3/TR has a maximum DC power dissipation of 500 mW at +50°C, with a derating factor of 4 mW/°C above that temperature. This rating is defined in the "MAXIMUM RATINGS" section and applies to the DO-213AA package under free-air conditions. Exceeding this limit risks thermal runaway or permanent parametric shift in the CDLL4567AE3/TR.
CDLL4567AE3/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:
- -55°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
CDLL4567AE3/TR FAQ
1.How can I place an order for CDLL4567AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for CDLL4567AE3/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 CDLL4567AE3/TR reliable?
The price and inventory of CDLL4567AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CDLL4567AE3/TR is usually 5 days.
3.What payment methods are accepted for CDLL4567AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CDLL4567AE3/TR transactions.
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4.How is shipping managed for CDLL4567AE3/TR?
CDLL4567AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CDLL4567AE3/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 CDLL4567AE3/TR?
For technical support, including CDLL4567AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CDLL4567AE3/TR requirements.
6.How does Aetrix verify that CDLL4567AE3/TR is sourced from the original manufacturer or authorized distributors?
All CDLL4567AE3/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 CDLL4567AE3/TR meets industry standards.
7.What is the process for return or replacement of CDLL4567AE3/TR?
All CDLL4567AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with CDLL4567AE3/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 CDLL4567AE3/TR part is unused and in its original packaging.
Return procedure for CDLL4567AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CDLL4567AE3/TR Tags
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