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Microchip Technology 1N4569
- Part No.:
- 1N4569
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4569.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:2,867
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Product details
Overview
1N4569 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 1N4569 datasheet, 1N4569 pinout, 1N4569 application, or 1N4569 equivalent, key selection criteria include its 6.4 V nominal Zener voltage with ±5% tolerance, sub-0.001 %/°C TC, low-power 0.5 mA operating point, hermetic DO-7 packaging, and MIL-PRF-19500/452 qualification capability via prefix/suffix extensions.
Technical Context
The 1N4569 employs internal metallurgical bonding to achieve exceptional thermal stability, with its 0.0005 %/°C temperature coefficient validated over 0 to +75 °C and –55 to +100 °C ranges. Its Zener voltage is specified at 6.4 V ±5% under 0.5 mA DC test current (IZT), with dynamic impedance measured at 200 Ω using 0.75 mA AC rms superimposed on 7.5 mA DC.
This device operates as a two-terminal passive voltage reference, requiring reverse-biased connection (cathode band positive), and is nonsensitive to ESD per MIL-STD-750 Method 1020. Power dissipation is limited to 30 mW for optimal TC performance, though absolute maximum rating is 500 mW at TL = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V ±5% at IZT = 0.5 mA - defines nominal reference level for calibration-critical circuits |
| Temperature Coefficient (αVZ) | 0.0005 %/°C - enables <±0.05 mV/°C drift over 0–75 °C, critical for high-accuracy references |
| Zener Test Current (IZT) | 0.5 mA - optimized bias point for minimal TC and stable regulation in low-power systems |
| Dynamic Impedance (ZZT) | 200 Ω at IZT - limits output voltage variation under load transients in precision feedback paths |
| Operating Temperature Range | –65 °C to +175 °C - supports deployment in aerospace, downhole, and extended-temperature industrial environments |
| Package | DO-7 (DO-204AA) - hermetically sealed glass axial-leaded package with tin-lead solderable leads |
| Max Power Dissipation | 500 mW @ TL = 25 °C - but 30 mW recommended for TC-optimized operation |
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 cathode (banded end) to be biased positive relative to anode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference diode terminal connected to circuit ground or lower potential | Reverse-bias return path; must be held at lower potential than cathode for Zener conduction |
| Cathode (banded end) | Reference diode terminal providing regulated 6.4 V output | Positive reference node; voltage referenced to anode; marked by visible band on glass body |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | 0.0005 %/°C TC - achieves near-zero voltage drift across wide ambient ranges without external circuitry |
| Hermetic glass construction | DO-7 package with internal metallurgical bond - ensures long-term parameter stability and reliability in harsh environments |
| MIL-PRF-19500/452 qualification path | Supports JAN/JANTX/JANTXV prefixes + "-1" suffix (e.g., JANTX1N4569A-1) - meets military screening and traceability requirements |
| ESD immunity | Nonsensitive per MIL-STD-750 Method 1020 - eliminates need for external ESD protection in handling and assembly |
| Tight-tolerance options | Available with -1%, -2%, -3% suffixes (e.g., 1N4569A-2%) - enables system-level accuracy tuning without redesign |
Applications
| High-Accuracy ADC/DAC Reference | Aerospace Sensor Signal Conditioning |
|---|---|
Use Scenario: Precision analog-to-digital conversion in flight control computers where reference stability directly impacts measurement fidelity. IC Role / Device Role / Timing Role: Two-terminal voltage reference supplying stable 6.4 V to ADC voltage reference input. Use Value: 0.0005 %/°C TC ensures <±0.5 mV drift over –55 to +100 °C, maintaining 16-bit effective resolution across operational envelope. |
Use Scenario: Biasing and calibration of pressure/temperature transducers in satellite payload telemetry systems. IC Role / Device Role / Timing Role: Primary reference source for op-amp-based ratiometric signal conditioning stages. Use Value: Hermetic DO-7 package and –65 to +175 °C rating support unattended operation in vacuum and thermal cycling environments. |
| Military Power Supply Trim | Downhole Oilfield Instrumentation |
Use Scenario: Fine adjustment of regulated output voltages in MIL-STD-704 compliant power supplies for avionics racks. IC Role / Device Role / Timing Role: Shunt reference in feedback loop of isolated DC-DC converter error amplifier. Use Value: 200 Ω dynamic impedance minimizes loop gain variation during load transients, improving transient response stability. |
Use Scenario: Calibration reference in high-temperature logging tools deployed at >150 °C wellbore depths. IC Role / Device Role / Timing Role: Stable excitation source for Wheatstone bridge strain gauges and RTD interfaces. Use Value: Verified operation up to +175 °C with no parameter shift beyond spec allows single-point calibration over full thermal range. |
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, 0.0005 %/°C TC, but rated for 1.0 mA IZT instead of 0.5 mA | Higher bias current improves noise performance but increases power draw in ultra-low-power systems | Select 1N4574A when circuit can support 1 mA bias and lower broadband noise is prioritized over quiescent power |
| 1N4579A | Same 6.4 V nominal, 0.0005 %/°C TC, but rated for 2.0 mA IZT and 50 Ω ZZT (vs. 200 Ω for 1N4569) | Lower dynamic impedance enhances regulation under varying load conditions but requires higher bias current | Choose 1N4579A for applications needing tighter load regulation in battery-powered instrumentation with available 2 mA headroom |
Compared with 1N4569, 1N4574A offers identical TC and voltage but shifts optimal bias to 1 mA for improved noise, while 1N4579A further reduces ZZT to 50 Ω at 2 mA-enabling better load regulation at the cost of higher quiescent current.
Availability
1N4569 is available at Aetrix Electronics and suitable for high-reliability instrumentation, aerospace sensor conditioning, and military power supply trimming requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N4569 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 military-qualified analog and mixed-signal components.
The 1N4565–1N4584A series was designed specifically for ultra-stable voltage reference applications in defense, aerospace, and industrial systems demanding minimal temperature-induced drift and long-term parametric consistency.
FAQ
What is the Zener test current (IZT) specification for the 1N4569?
The 1N4569 is specified at a Zener test current (IZT) of 0.5 mA. This current is used to measure its 6.4 V nominal Zener voltage and 0.0005 %/°C temperature coefficient. Operating the 1N4569 at this precise bias point ensures compliance with its published TC and voltage tolerance specs, and deviations may increase drift or reduce stability.
Does the 1N4569 have military qualification options?
Yes, the 1N4569 supports military qualification via prefix and suffix extensions: adding JAN, JANTX, or JANTXV before the part number and "-1" after (e.g., JANTX1N4569A-1) qualifies it per MIL-PRF-19500/452. These versions undergo enhanced screening, traceability, and environmental testing beyond commercial-grade 1N4569 units.
What is the maximum power dissipation rating for the 1N4569?
The 1N4569 has a maximum DC power dissipation of 500 mW at lead temperature (TL) = 25 °C. However, for optimal temperature coefficient performance, Microsemi recommends limiting power to ≤30 mW. Exceeding this degrades TC stability, even if within absolute max ratings.
How is polarity identified on the 1N4569 DO-7 package?
The 1N4569 uses a cathode band marking on its glass DO-7 body to indicate polarity: the banded end is the cathode and must be biased positive relative to the anode for proper Zener operation. This marking aligns with JEDEC DO-204AA standards and is verified per MIL-STD-750 Method 2026 for visual inspection.
Can the 1N4569 be used in high-temperature downhole applications?
Yes, the 1N4569 is rated for operation from –65 °C to +175 °C and has been validated in extended-temperature environments including downhole oilfield instrumentation. Its hermetic DO-7 package and internal metallurgical bond ensure parameter stability at 175 °C, making it suitable for single-point calibrated systems operating continuously at elevated temperatures.
1N4569 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:
- ±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-7
1N4569 FAQ
1.How can I place an order for 1N4569 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4569 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 1N4569 reliable?
The price and inventory of 1N4569 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4569 is usually 5 days.
3.What payment methods are accepted for 1N4569?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4569 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4569?
1N4569 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4569 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 1N4569?
For technical support, including 1N4569 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4569 requirements.
6.How does Aetrix verify that 1N4569 is sourced from the original manufacturer or authorized distributors?
All 1N4569 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 1N4569 meets industry standards.
7.What is the process for return or replacement of 1N4569?
All 1N4569 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4569, 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 1N4569 part is unused and in its original packaging.
Return procedure for 1N4569:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4569 Tags
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MMBZ5240B-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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SMAJ4744A-TP
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