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Microchip Technology 1N4566E3/TR
- Part No.:
- 1N4566E3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4566E3/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,443
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Product details
Overview
1N4566E3/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 (±0.32 mV/°C), 200 Ω dynamic impedance, and operation from –65 °C to +175 °C. It delivers high-stability voltage reference for precision analog instrumentation.
For engineers reviewing the 1N4566E3/TR datasheet, 1N4566E3/TR pinout, 1N4566E3/TR application, or 1N4566E3/TR equivalent, key selection criteria include its ultra-low TC, hermetic glass packaging, MIL-PRF-19500/452 qualification readiness, and TR tape-and-reel delivery format.
Technical Context
This device belongs to Microsemi's zero-temperature-coefficient Zener family, using internal metallurgical bonding to achieve stable 6.4 V reference output across wide temperature extremes. Its 0.5 mA Zener test current and 200 Ω dynamic impedance are optimized for low-power, high-accuracy biasing and calibration circuits.
The 1N4566E3/TR exhibits ±0.005 %/°C TC over 0 °C to +75 °C, with reverse leakage ≤2.0 µA at 3 V and DC power dissipation of 500 mW at 25 °C lead temperature. Its cathode band marking and tin-lead plated leads comply with MIL-STD-750 Method 2026.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 6.4 V ±5% nominal - provides stable reference point for analog signal conditioning and ADC/DAC biasing |
| Temperature Coefficient | ±0.005 %/°C (±0.32 mV/°C) - ensures minimal drift over 0 °C to +75 °C operating range |
| Zener Test Current | 0.5 mA - defines operating point where specified VZ and TC are guaranteed |
| Dynamic Impedance | 200 Ω @ IZT - limits AC ripple coupling into reference node in precision regulators |
| Max Reverse Current | ≤2.0 µA @ 3 V - enables low-error operation in high-impedance reference divider networks |
| Operating Temperature | –65 °C to +175 °C - supports aerospace, downhole, and military systems requiring extreme thermal resilience |
| Package | DO-7 (DO-204AA) glass axial - hermetically sealed, ESD-insensitive per MIL-STD-750 Method 1020 |
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 unmarked end during forward-biased reference use.
| 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 held at higher potential than anode |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | ±0.005 %/°C TC enables <±1 mV total drift over 0–75 °C in calibrated systems |
| Hermetic glass construction | DO-7 package ensures long-term parameter stability and immunity to humidity-induced degradation |
| MIL-PRF-19500/452 readiness | Add JAN/JANTX/JANTXV prefix + "-1" suffix for qualified versions - supports defense/aerospace BOMs |
| Tape-and-reel packaging | "TR" suffix indicates EIA-296 compliant reel - enables automated SMT-compatible placement despite axial form factor |
| ESD insensitivity | Complies with MIL-STD-750 Method 1020 - eliminates need for handling precautions in production environments |
Applications
| High-Accuracy Data Acquisition | Aerospace Sensor Signal Conditioning |
|---|---|
Use Scenario: Precision 16-bit+ ADC reference in laboratory-grade multimeters and calibration equipment. IC Role / Device Role / Timing Role: Primary voltage reference establishing full-scale input range for analog front-end. Use Value: ±0.005 %/°C TC and 200 Ω ZZT minimize gain error and thermal hysteresis across environmental testing. |
Use Scenario: Biasing and offset correction for RTD and thermocouple interfaces in flight control electronics. IC Role / Device Role / Timing Role: Stable excitation source for bridge sensors and cold-junction compensation references. Use Value: –65 °C to +175 °C operating range and hermetic DO-7 package ensure reliability under thermal cycling and vacuum exposure. |
| Military Power Supply Regulation | Downhole Oil & Gas Instrumentation |
Use Scenario: Reference element in MIL-STD-704 compliant DC-DC converters for avionics subsystems. IC Role / Device Role / Timing Role: Feedback node reference for error amplifiers in isolated flyback and forward topologies. Use Value: Low 2.0 µA IR at 3 V prevents loading errors in high-resistance feedback dividers used in radiation-hardened designs. |
Use Scenario: Voltage reference in pressure/temperature sensor modules deployed in oil well logging tools. IC Role / Device Role / Timing Role: Calibration anchor for analog signal chains exposed to >150 °C ambient and mechanical shock. Use Value: Metallurgically bonded junction and glass encapsulation prevent parameter shift after 1000+ thermal cycles above 125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4566A | Same 6.4 V / 0.5 mA / ±0.005 %/°C spec, but without TR tape-and-reel packaging | Used in manual assembly or non-automated prototyping; lacks EIA-296 compliance | Select 1N4566A only when reel packaging is unnecessary and MIL-PRF-19500 qualification is not required |
| 1N4567 | Identical DO-7 package and 0.5 mA IZT, but tighter ±0.002 %/°C TC (±0.13 mV/°C) | Suitable for ultra-high-stability metrology systems where sub-mV drift is critical | Choose 1N4567 when TC budget demands <0.5 mV total drift over 0–75 °C, accepting same power and impedance trade-offs |
Compared with 1N4566E3/TR, 1N4566A omits tape-and-reel delivery and military suffix support, while 1N4567 improves TC by 2.5× at identical test current-enabling higher accuracy in calibration-critical systems without changing layout or bias network.
Availability
1N4566E3/TR is available at Aetrix Electronics and suitable for high-reliability aerospace instrumentation, downhole sensor modules, and military-grade power supply regulation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4566E3/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 precision voltage reference applications demanding ultra-low temperature drift, hermetic reliability, and MIL-qualified variants - targeting instrumentation, avionics, and harsh-environment sensing.
FAQ
What is the Zener voltage tolerance for 1N4566E3/TR?
The 1N4566E3/TR has a nominal Zener voltage of 6.4 V with a standard tolerance of ±5%, as defined in the JEDEC-registered electrical characteristics table. Tighter tolerances (e.g., ±1%, ±2%) are available via custom ordering with hyphenated suffixes like "-1%", but the base 1N4566E3/TR part adheres to the ±5% specification at 0.5 mA test current and 25 °C.
Does 1N4566E3/TR require external current limiting?
Yes, the 1N4566E3/TR must be operated with a series current-limiting resistor to maintain its Zener test current at 0.5 mA. Without proper biasing, voltage regulation degrades due to insufficient junction conduction or thermal runaway. The resistor value is calculated based on supply voltage, desired 6.4 V output, and 0.5 mA target current - typical designs use 1–10 kΩ depending on system voltage rails.
Is 1N4566E3/TR suitable for surface-mount assembly?
No, the 1N4566E3/TR uses a DO-7 (DO-204AA) axial-leaded glass package and is not a surface-mount device. However, its "TR" suffix indicates EIA-296 tape-and-reel packaging, enabling automated pick-and-place handling in through-hole insertion lines - it is not compatible with reflow soldering or SMT processes.
Can 1N4566E3/TR be used in radiation-prone environments?
The base 1N4566E3/TR is not radiation-hardened. For such applications, Microsemi offers RH-prefixed variants (e.g., RH4566A) designed to meet specific TID and SEE requirements. The standard 1N4566E3/TR should only be deployed in non-radiation environments unless validated per mission-specific radiation testing protocols.
What is the maximum power dissipation rating for 1N4566E3/TR?
The 1N4566E3/TR is rated for 500 mW DC power dissipation at a lead temperature (TL) of 25 °C. However, for optimal voltage-temperature stability, Microsemi specifies operation below 30 mW - achieved by biasing at its 0.5 mA test current. Exceeding 30 mW increases self-heating and compromises the ±0.005 %/°C TC performance.
1N4566E3/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)
1N4566E3/TR FAQ
1.How can I place an order for 1N4566E3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4566E3/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 1N4566E3/TR reliable?
The price and inventory of 1N4566E3/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4566E3/TR is usually 5 days.
3.What payment methods are accepted for 1N4566E3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4566E3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4566E3/TR?
1N4566E3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4566E3/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 1N4566E3/TR?
For technical support, including 1N4566E3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4566E3/TR requirements.
6.How does Aetrix verify that 1N4566E3/TR is sourced from the original manufacturer or authorized distributors?
All 1N4566E3/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 1N4566E3/TR meets industry standards.
7.What is the process for return or replacement of 1N4566E3/TR?
All 1N4566E3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4566E3/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 1N4566E3/TR part is unused and in its original packaging.
Return procedure for 1N4566E3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4566E3/TR Tags
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