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Microchip Technology 1N4566AE3/TR
- Part No.:
- 1N4566AE3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4566AE3/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:9,656
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Product details
Overview
1N4566AE3/TR from Microsemi is a 6.4 V temperature-compensated Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for 0.5 mA test current, ±0.005%/°C temperature coefficient, 200 Ω dynamic impedance, and operating across –65°C to +175°C. It delivers high-stability voltage referencing in precision analog instrumentation and military-grade power supply feedback loops.
For engineers reviewing the 1N4566AE3/TR datasheet, 1N4566AE3/TR pinout, 1N4566AE3/TR application, or 1N4566AE3/TR equivalent, key selection criteria include its ultra-low TC (0.005%/°C), hermetic DO-7 packaging, MIL-PRF-19500/452 qualification readiness, and TR-tape-and-reel availability for automated assembly.
Technical Context
This device belongs to Microsemi's zero-temperature-coefficient Zener family optimized for minimal drift over wide temperature ranges. Its 6.4 V nominal Zener voltage leverages stacked junction compensation to achieve TC as low as 0.0005%/°C - the 1N4566A variant targets 0.005%/°C with 0.5 mA test current and 200 Ω dynamic impedance at 25°C.
The DO-7 package features internal metallurgical bonding, tin-lead plated leads compliant with MIL-STD-750 Method 2026, and cathode band polarity marking. It supports operation up to 500 mW at 25°C ambient but is optimized for ≤30 mW dissipation to maintain voltage-temperature stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V ±5% at IZT = 0.5 mA - stable reference point for calibration-critical circuits |
| Temp. Coefficient (αVZ) | ±0.005%/°C - enables <0.5 mV drift over 0–75°C operating range |
| Zener Impedance (ZZT) | 200 Ω @ IZT = 0.5 mA - ensures low AC error contribution in feedback networks |
| Max Reverse Current (IR) | 2.0 µA @ 3 V - confirms low leakage for high-impedance reference node integrity |
| Operating Temp. Range | –65°C to +175°C - supports aerospace, downhole, and extended-temperature industrial use |
| Package | DO-7 (DO-204AA) - hermetically sealed glass axial package with MIL-STD-750 qualified leads |
| Tape & Reel | EIA-296 compliant with "TR" suffix - enables SMT-compatible automated placement |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with cathode band marking; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026. Polarity requires banded end to be positive relative to unbanded end during forward-biased reference operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground reference node | Connected to circuit common; establishes return path for Zener bias current |
| Cathode (banded end) | Stable 6.4 V output node | Provides regulated voltage source; must be biased positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated Zener structure | Stacked-junction design achieves ±0.005%/°C TC - critical for metrology-grade stability |
| Hermetic DO-7 glass package | Sealed construction ensures long-term parameter retention in humid or corrosive environments |
| MIL-PRF-19500/452 qualification path | Add JAN/JANTX/JANTXV prefix + "-1" suffix - enables direct use in defense/aerospace BOMs |
| Nonsensitive to ESD | Complies with MIL-STD-750 Method 1020 - eliminates need for handling precautions in production |
| Tight tolerance options | Custom tolerances (e.g., –1%, –2%) available via suffix - supports high-accuracy system calibration |
Applications
| High-Accuracy Data Acquisition Systems | Military Power Supply Feedback Loops |
|---|---|
Use Scenario: Precision ADC/DAC reference voltage generation in 16-bit+ systems requiring sub-10 ppm/°C drift. IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end signal conditioning and conversion stages. Use Value: 0.005%/°C TC ensures <±0.4 mV shift over 0–75°C, meeting ENOB requirements for calibrated measurement systems. |
Use Scenario: Closed-loop regulation in MIL-STD-704 aircraft power supplies with –55°C to +100°C operational envelope. IC Role / Device Role / Timing Role: Stable feedback reference for isolated DC-DC converter error amplifiers. Use Value: Hermetic DO-7 package and –65°C to +175°C rating enable uninterrupted operation under extreme thermal cycling. |
| Downhole Oil & Gas Sensor Modules | Calibration Standards for Field Test Equipment |
Use Scenario: Reference element in pressure/temperature transducers deployed in borehole environments exceeding 150°C. IC Role / Device Role / Timing Role: Biasing and scaling reference for Wheatstone bridge signal conditioning ICs. Use Value: 200 Ω ZZT minimizes loading error on high-Z sensor outputs; 175°C max temp rating exceeds API RP14C requirements. |
Use Scenario: Portable multimeter and calibrator designs requiring traceable, field-deployable voltage standards. IC Role / Device Role / Timing Role: Primary 6.4 V reference in self-contained calibration sources with manual or auto-ranging. Use Value: JEDEC-registered 1N4566A baseline enables cross-manufacturer verification; TR packaging supports benchtop rework and field replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4566A-1 (JANTXV) | Identical electrical specs; adds JANTXV military qualification and –1 suffix per MIL-PRF-19500/452 | Required for DoD-specified designs where radiation-hardened or screened lots are mandated | Select when full MIL-spec compliance and lot traceability are contractually required |
| LM399H | Higher initial accuracy (±0.005%), oven-controlled (69°C), 10x higher power draw, TO-99 metal can | Suitable for lab-grade instruments; not viable for size-/power-constrained embedded systems | Choose only if absolute long-term stability (<2 ppm/√kHr) outweighs board space and thermal management cost |
Compared with 1N4566AE3/TR, the 1N4566A-1 offers identical performance with mandatory military screening, while LM399H trades DO-7 simplicity for oven-controlled precision - making 1N4566AE3/TR optimal for ruggedized embedded references where size, power, and cost are constrained.
Availability
1N4566AE3/TR is available at Aetrix Electronics and suitable for high-reliability power supply feedback, precision instrumentation, and aerospace sensor conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N4566AE3/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 analog and mixed-signal components for aerospace, defense, and industrial markets.
The 1N4565–1N4584A series was engineered specifically for ultra-stable voltage referencing in mission-critical systems where temperature-induced drift must be minimized - targeting applications from avionics to oilfield electronics.
FAQ
What is the Zener test current for 1N4566AE3/TR?
The 1N4566AE3/TR is specified at a Zener test current (IZT) of 0.5 mA per Microsemi's REV B datasheet. This current level is used to measure its 6.4 V nominal Zener voltage and 200 Ω dynamic impedance. Operating significantly above or below this value increases voltage drift and impedance variation, so biasing circuits should target 0.5 mA for optimal TC performance.
Does 1N4566AE3/TR have military qualification?
The base 1N4566AE3/TR is commercially qualified but designed to accept military prefixes and suffixes. Adding "JANTXV" prefix and "-1" suffix yields JANTXV1N4566AE3/TR - a fully MIL-PRF-19500/452 qualified version. The "E3" in the part number indicates Pb-free termination, and "TR" confirms EIA-296 tape-and-reel packaging - both compatible with JANTXV upgrade paths.
What is the maximum power dissipation for 1N4566AE3/TR?
The 1N4566AE3/TR has a maximum DC power dissipation of 500 mW at lead temperature (TL) = 25°C. However, Microsemi specifies that optimum voltage-temperature stability is achieved at dissipation <30 mW - corresponding to ~0.5 mA × 6.4 V. Exceeding 30 mW introduces self-heating effects that degrade its ±0.005%/°C TC performance, especially in confined layouts.
How does the temperature coefficient of 1N4566AE3/TR compare to standard Zeners?
Standard 6.2–6.8 V Zeners typically exhibit TC values of ±0.05%/°C to ±0.1%/°C, causing >3 mV/°C drift. In contrast, the 1N4566AE3/TR achieves ±0.005%/°C - a 10× improvement - due to its compensated stacked-junction design. This reduces drift to <0.4 mV over 0–75°C, enabling use in Class A instrumentation where drift budgets are sub-millivolt.
Is 1N4566AE3/TR compatible with lead-free reflow processes?
Yes - the "E3" suffix in 1N4566AE3/TR denotes Pb-free (lead-free) termination per JEDEC J-STD-609. Its glass DO-7 package withstands peak reflow temperatures up to 260°C for 10 seconds, complying with IPC/JEDEC J-STD-020. The tin-lead plating referenced in legacy docs applies only to non-E3 variants; E3 uses matte tin finish compatible with standard lead-free profiles.
1N4566AE3/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):
- 6.4 V
- Tolerance:
- ±5%
- 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:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4566AE3/TR FAQ
1.How can I place an order for 1N4566AE3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4566AE3/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 1N4566AE3/TR reliable?
The price and inventory of 1N4566AE3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4566AE3/TR is usually 5 days.
3.What payment methods are accepted for 1N4566AE3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4566AE3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4566AE3/TR?
1N4566AE3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4566AE3/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 1N4566AE3/TR?
For technical support, including 1N4566AE3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4566AE3/TR requirements.
6.How does Aetrix verify that 1N4566AE3/TR is sourced from the original manufacturer or authorized distributors?
All 1N4566AE3/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 1N4566AE3/TR meets industry standards.
7.What is the process for return or replacement of 1N4566AE3/TR?
All 1N4566AE3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4566AE3/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 1N4566AE3/TR part is unused and in its original packaging.
Return procedure for 1N4566AE3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4566AE3/TR Tags
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