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Microchip Technology 1N4569A
- Part No.:
- 1N4569A
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4569A.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:7,386
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Product details
Overview
1N4569A 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, ±0.0005 %/°C temperature coefficient, 200 Ω dynamic impedance, and operation from –65 °C to +175 °C. It delivers ultra-stable voltage reference performance in precision instrumentation and military-grade analog circuits.
For engineers reviewing the 1N4569A datasheet, 1N4569A pinout, 1N4569A application, or 1N4569A equivalent, this part supports high-reliability voltage referencing where minimal drift over temperature and wide operating range are critical - especially in aerospace, test equipment, and calibration systems requiring traceable, low-drift references.
Technical Context
The 1N4569A uses internal metallurgical bonding to achieve zero-temperature-coefficient behavior at 6.4 V nominal, with TC specified as ±0.0005 %/°C over –55 °C to +100 °C. Its Zener test current is fixed at 0.5 mA, and it operates within a 30 mW power limit for optimal stability.
This device belongs to the JEDEC-registered 1N4565–1N4584A-1 series and meets MIL-PRF-19500/452 when ordered with JAN/JANTX/JANTXV prefixes and "-1" suffix (e.g., JANTX1N4569A-1). It is hermetically sealed in glass and ESD-nonsensitive per MIL-STD-750 Method 1020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V ±5% nominal; stable reference point for analog signal conditioning and ADC/DAC biasing |
| Temperature Coefficient (TC) | ±0.0005 %/°C; enables sub-0.1 mV/°C drift over –55 °C to +100 °C for metrology-grade accuracy |
| Zener Test Current (IZT) | 0.5 mA; defines operating point where VZ and TC are characterized and guaranteed |
| Dynamic Impedance (ZZT) | 200 Ω @ IZT; limits load regulation error under varying current draw in feedback loops |
| Operating Temperature Range | –65 °C to +175 °C; supports deployment in extreme-environment avionics and downhole electronics |
| Power Dissipation | 500 mW @ TL = 25 °C; derates linearly above 25 °C ambient for thermal design margin |
| Reverse Leakage (IR) | ≤2.0 µA @ 3 V; ensures negligible error current in high-impedance reference nodes |
Pinout & Package
Package: DO-7 (DO-204AA), hermetically sealed glass axial-leaded case with tin-lead plated leads per MIL-STD-750 Method 2026. Cathode identified by band; operated with banded end positive.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes return path for Zener bias current |
| Cathode | Stable 6.4 V output node | Provides regulated voltage source; must be biased positive relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low TC | ±0.0005 %/°C enables <0.03 mV/°C drift - critical for calibration standards and sensor excitation |
| Hermetic glass seal | Ensures long-term parameter stability and moisture resistance in harsh environments |
| MIL-qualified variants available | JAN/JANTX/JANTXV versions with "-1" suffix meet MIL-PRF-19500/452 for defense applications |
| ESD robustness | Nonsensitive per MIL-STD-750 Method 1020 - no handling precautions required during assembly |
Applications
| High-Precision Calibration Equipment | Aerospace Sensor Signal Conditioning |
|---|---|
Use Scenario: Reference voltage source in portable multimeters and automated test equipment requiring traceable accuracy across temperature. IC Role / Device Role / Timing Role: Primary voltage reference for ADC front-end and DAC output buffering. Use Value: ±0.0005 %/°C TC ensures ≤0.03 mV/°C drift over –55 °C to +100 °C, meeting Class A metrology requirements. |
Use Scenario: Biasing and excitation reference for strain gauges and RTDs in flight control systems. IC Role / Device Role / Timing Role: Stable 6.4 V reference for Wheatstone bridge excitation and analog front-end gain setting. Use Value: Hermetic DO-7 package and –65 °C to +175 °C rating support operation in engine-mounted sensors and avionics bays. |
| Military Power Supply Monitoring | Downhole Oilfield Instrumentation |
Use Scenario: Voltage reference in MIL-STD-704 compliant power monitors used on tactical vehicles and naval platforms. IC Role / Device Role / Timing Role: Reference for overvoltage/undervoltage comparators and digital supply health reporting. Use Value: JANTX-qualified variants (e.g., JANTX1N4569A-1) provide tested reliability and lot traceability per MIL-PRF-19500/452. |
Use Scenario: Precision reference in pressure and temperature transducers deployed in oil/gas wellbores. IC Role / Device Role / Timing Role: Core voltage reference for analog-to-digital conversion of downhole sensor outputs. Use Value: Extended –65 °C to +175 °C operation and hermetic sealing prevent parameter shift under high-temperature, high-pressure conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4574A | Same 6.4 V nominal and ±0.0005 %/°C TC, but rated for 1.0 mA IZT and 100 Ω ZZT | Better suited for higher-current reference buffers; requires 2× bias current vs. 1N4569A | Select 1N4574A when circuit demands lower dynamic impedance and can supply 1.0 mA bias current |
| 1N4579A | Same 6.4 V nominal and ±0.0005 %/°C TC, but rated for 2.0 mA IZT and 50 Ω ZZT | Optimized for low-impedance reference distribution in multi-channel systems | Choose 1N4579A for applications needing <50 Ω source impedance and ≥2.0 mA operating current |
Compared with 1N4569A, 1N4574A offers lower dynamic impedance at double the test current, while 1N4579A further reduces impedance at 2× higher bias - enabling tighter load regulation in high-precision analog subsystems where current budget allows.
Availability
1N4569A is available at Aetrix Electronics and suitable for high-reliability voltage reference applications in aerospace instrumentation, military power monitoring, and downhole sensor electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4569A 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 1N4569A belongs to Microsemi's legacy Scottsdale Division temperature-compensated Zener reference diode family, engineered specifically for metrology-grade stability and military environmental resilience.
FAQ
What is the Zener test current for the 1N4569A?
The 1N4569A is characterized and specified at a Zener test current (IZT) of 0.5 mA. This current defines the operating point where its 6.4 V nominal voltage and ±0.0005 %/°C temperature coefficient are guaranteed. Operating significantly above or below this current may increase dynamic impedance and degrade TC performance, so bias networks should target 0.5 mA for optimal 1N4569A behavior.
Does the 1N4569A have military qualification options?
Yes - the 1N4569A can be ordered with military qualifications by adding appropriate prefixes and suffixes: JANTX1N4569A-1 and JANTXV1N4569A-1 meet MIL-PRF-19500/452 requirements. These variants include full lot traceability, extended screening, and environmental testing beyond commercial-grade 1N4569A, making them suitable for defense and space applications where reliability certification is mandatory.
What is the maximum operating temperature for the 1N4569A?
The 1N4569A is rated for continuous operation from –65 °C to +175 °C. Its hermetically sealed DO-7 glass package and internal metallurgical bonding enable stable electrical performance across this full range. The temperature coefficient specification (±0.0005 %/°C) applies over –55 °C to +100 °C, while the broader range supports survivability and functional operation in extreme thermal environments such as engine compartments or downhole tools.
How does the 1N4569A differ from standard Zener diodes?
Unlike standard Zeners, the 1N4569A uses a temperature-compensated structure that cancels intrinsic TC drift, achieving ±0.0005 %/°C - over 20× better than typical 5% TC Zeners. It also features hermetic glass packaging, MIL-qualified variants, and guaranteed low dynamic impedance (200 Ω), making the 1N4569A suitable for metrology and aerospace applications where long-term stability and environmental resilience are non-negotiable.
Can the 1N4569A be used in surface-mount designs?
No - the 1N4569A is only available in the axial-leaded DO-7 (DO-204AA) through-hole package. However, Microsemi offers surface-mount equivalents such as JANTX1N4569AUR-1 in DO-213AA for SMT-compatible designs. That variant maintains identical electrical specs but requires requalification for thermal and mechanical stress in reflow processes; the 1N4569A itself is not SMT-capable.
1N4569A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.4 V
- Tolerance:
- ±10%
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-7
1N4569A FAQ
1.How can I place an order for 1N4569A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4569A 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 1N4569A reliable?
The price and inventory of 1N4569A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4569A is usually 5 days.
3.What payment methods are accepted for 1N4569A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4569A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4569A?
1N4569A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4569A 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 1N4569A?
For technical support, including 1N4569A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4569A requirements.
6.How does Aetrix verify that 1N4569A is sourced from the original manufacturer or authorized distributors?
All 1N4569A 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 1N4569A meets industry standards.
7.What is the process for return or replacement of 1N4569A?
All 1N4569A units undergo pre-shipment inspection (PSI). If there is an issue with 1N4569A, 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 1N4569A part is unused and in its original packaging.
Return procedure for 1N4569A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4569A Tags
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