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Microchip Technology 1N4565AE3
- Part No.:
- 1N4565AE3
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4565AE3.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,557
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Product details
Overview
1N4565AE3 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, ±0.01%/°C temperature coefficient, and 200 Ω dynamic impedance at IZT. It operates from –65°C to +175°C and delivers stable voltage reference performance in precision analog instrumentation.
For engineers reviewing the 1N4565AE3 datasheet, 1N4565AE3 pinout, 1N4565AE3 application, or 1N4565AE3 equivalent, key selection criteria include its low TC (0.01%/°C), tight 6.4 V nominal tolerance, hermetic DO-7 packaging, military-grade qualification path (JAN/JANTX), and suitability for high-reliability voltage reference circuits requiring minimal drift over temperature.
Technical Context
This device belongs to Microsemi's JEDEC-registered 1N4565–1N4584A-1 series of zero-TC Zener reference diodes. Its internal metallurgical bonding ensures long-term stability, and it is specified for operation at 0.5 mA test current with 6.4 V nominal output across –65°C to +175°C ambient range.
The 1N4565AE3 achieves ±0.01%/°C temperature coefficient via dual-Zener compensation architecture, delivering 0.64 mV/°C absolute TC. It maintains ≤2 µA reverse leakage at 3 V and supports up to 70 mA maximum Zener current, though optimal stability occurs below 30 mW dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.4 V ±5% - stable reference point for analog calibration and feedback loops |
| Zener Test Current (IZT) | 0.5 mA - operating point where voltage and TC are specified; sets biasing requirement |
| Temperature Coefficient | ±0.01%/°C - enables <0.7 mV/°C drift over 0 to +75°C operating range |
| Dynamic Impedance (ZZT) | 200 Ω @ IZT - limits load regulation error in precision reference applications |
| Max Reverse Current (IR) | 2.0 µA @ 3 V - ensures low leakage impact on high-impedance reference nodes |
| Operating Temperature Range | –65°C to +175°C - supports aerospace, downhole, and military systems without derating |
| Power Dissipation | 500 mW @ TL = 25°C - allows use in thermally constrained PCB layouts with adequate heatsinking |
Pinout & Package
DO-7 (DO-204AA) hermetically sealed glass axial-leaded package with tin-lead plated leads. Cathode identified by band; device operated with banded end positive relative to unbanded end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground reference node | Connected to circuit common; defines 0 V reference for Zener drop |
| Cathode (banded end) | Positive reference output terminal | Provides +6.4 V relative to anode; must be biased positively for conduction |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated Zener structure | 0.01%/°C TC achieved via matched dual-junction design, minimizing thermal drift |
| Hermetic DO-7 glass package | Enables operation from –65°C to +175°C with no moisture-induced parameter shift |
| MIL-PRF-19500/452 qualification path | Supports JAN/JANTX/JANTXV versions with "-1" suffix for defense and space programs |
| Nonsensitive to ESD | Complies with MIL-STD-750 Method 1020 - eliminates need for external ESD protection |
| Flexible axial-leaded mounting | Enables through-hole placement in high-vibration environments and manual rework capability |
Applications
| High-Precision ADC Reference | Aerospace Power Supply Monitoring |
|---|---|
Use Scenario: Provides stable 6.4 V reference for 16-bit SAR ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Voltage reference source defining full-scale input range of analog front-end. Use Value: ±0.01%/°C TC ensures <±0.5 LSB drift over 0–70°C, preserving measurement accuracy without recalibration. |
Use Scenario: Monitors regulated bus voltage in satellite power distribution units. IC Role / Device Role / Timing Role: Precision shunt reference in overvoltage comparator circuitry. Use Value: Hermetic DO-7 package and –65°C to +175°C rating support operation in unheated payload bays and thermal vacuum environments. |
| Military Grade Instrumentation Calibration | Downhole Oilfield Sensor Electronics |
Use Scenario: Serves as primary reference in portable multimeters qualified to MIL-STD-810. IC Role / Device Role / Timing Role: Primary voltage standard for self-calibration routines and analog trim adjustments. Use Value: Tight 6.4 V nominal tolerance and JANTXV-qualified variants ensure traceable metrology-grade accuracy across field deployments. |
Use Scenario: Stabilizes bias voltage for piezoresistive pressure transducers in drill-string telemetry modules. IC Role / Device Role / Timing Role: High-temperature shunt reference enabling sensor signal conditioning at 150°C+. Use Value: Stable 6.4 V output with <2 µA leakage at 3 V prevents loading errors in ultra-low-power sensor front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4565A | Same electrical specs but non-E3 (non-RoHS-compliant) lead finish; lacks Pb-free plating | No difference in reference function; unsuitable for RoHS-compliant production | Select 1N4565AE3 for new designs requiring lead-free compliance per EU Directive 2011/65/EU |
| 1N4566AE3 | Lower TC: ±0.005%/°C (0.32 mV/°C); identical 6.4 V nominal and DO-7 package | Better thermal stability in wide-temperature-range instrumentation; higher cost | Choose 1N4566AE3 when <0.35 mV/°C drift is required over –55°C to +100°C |
Compared with 1N4565A and 1N4566AE3, the 1N4565AE3 offers RoHS-compliant termination while maintaining the baseline 0.01%/°C TC and 6.4 V reference point-making it ideal for commercial/mixed-use systems where regulatory compliance and moderate stability are balanced.
Availability
1N4565AE3 is available at Aetrix Electronics and suitable for high-reliability voltage reference applications in aerospace avionics, downhole oilfield electronics, and military-grade test equipment requiring stable component supply and long-lifecycle support.
Supply support for 1N4565AE3 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 RF components for aerospace, defense, and industrial markets.
The 1N4565AE3 belongs to Microsemi's legacy 1N45xx series of temperature-compensated Zener references, engineered specifically for precision voltage stabilization in extreme-temperature and mission-critical systems.
FAQ
What is the Zener test current for 1N4565AE3?
The 1N4565AE3 is specified at a Zener test current (IZT) of 0.5 mA. This current level defines the conditions under which its 6.4 V nominal voltage and ±0.01%/°C temperature coefficient are guaranteed. Operating significantly above or below this current may increase dynamic impedance and degrade TC performance, so biasing networks should target 0.5 mA for optimal stability.
Is 1N4565AE3 RoHS-compliant?
Yes, the "E3" suffix on 1N4565AE3 indicates lead-free, RoHS-compliant tin-lead plating per MIL-STD-750 Method 2026. This distinguishes it from the legacy 1N4565A variant, which uses traditional tin-lead finish. The E3 version meets EU Directive 2011/65/EU and is approved for use in environmentally regulated commercial and industrial applications.
What is the maximum operating temperature of 1N4565AE3?
The 1N4565AE3 has a specified operating temperature range of –65°C to +175°C. This extended range is enabled by its hermetically sealed DO-7 glass package and internal metallurgical bonding. It remains fully functional at +175°C ambient without derating, making it suitable for engine control units, downhole tools, and other high-temperature environments where plastic-packaged references fail.
Does 1N4565AE3 require external ESD protection?
No, the 1N4565AE3 is nonsensitive to ESD per MIL-STD-750 Method 1020. Its construction and packaging eliminate the need for external transient suppression or handling precautions beyond standard static-safe practices. This simplifies board layout and reduces BOM count in sensitive analog reference paths.
How does the temperature coefficient of 1N4565AE3 compare to standard Zeners?
The 1N4565AE3 achieves ±0.01%/°C TC-over 10× tighter than typical 5.6 V–6.8 V Zeners (which often exhibit ±0.05%/°C to ±0.1%/°C). This is accomplished via dual-junction temperature compensation, reducing voltage drift to <0.7 mV/°C over 0–75°C. Standard Zeners lack this architecture and show nonlinear TC curves that worsen at temperature extremes.
1N4565AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- 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)
1N4565AE3 FAQ
1.How can I place an order for 1N4565AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4565AE3 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 1N4565AE3 reliable?
The price and inventory of 1N4565AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4565AE3 is usually 5 days.
3.What payment methods are accepted for 1N4565AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4565AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4565AE3?
1N4565AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4565AE3 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 1N4565AE3?
For technical support, including 1N4565AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4565AE3 requirements.
6.How does Aetrix verify that 1N4565AE3 is sourced from the original manufacturer or authorized distributors?
All 1N4565AE3 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 1N4565AE3 meets industry standards.
7.What is the process for return or replacement of 1N4565AE3?
All 1N4565AE3 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4565AE3, 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 1N4565AE3 part is unused and in its original packaging.
Return procedure for 1N4565AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4565AE3 Tags
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