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Microchip Technology 1N4565A/TR
- Part No.:
- 1N4565A/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4565A/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,970
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Product details
Overview
1N4565A/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, ±0.01%/°C temperature coefficient, 200 Ω dynamic impedance, and operating temperature range of –65°C to +175°C. It delivers high-stability voltage reference for precision analog instrumentation requiring minimal drift over wide thermal excursions.
For engineers reviewing the 1N4565A/TR datasheet, 1N4565A/TR pinout, 1N4565A/TR application, or 1N4565A/TR equivalent, key selection criteria include its 6.4 V nominal Zener voltage with ±5% tolerance, ultra-low TC options within the same family, hermetic glass packaging, MIL-PRF-19500/452 qualification path, and TR tape-and-reel availability for automated assembly.
Technical Context
This device belongs to Microsemi's JEDEC-registered 1N4565–1N4584A-1 series of zero-TC reference diodes, engineered using internal metallurgical bonding to achieve stable Zener voltage across temperature. Its 6.4 V nominal voltage is optimized for low-drift bandgap-referenced systems where thermal hysteresis and long-term stability are critical.
The 1N4565A/TR operates at 0.5 mA Zener test current (IZT), delivering 200 Ω dynamic impedance (ZZT) and 2.0 µA maximum reverse leakage at 3 V. Its temperature coefficient of ±0.01%/°C applies over 0°C to +75°C, with extended storage and operating ranges up to +175°C enabled by hermetic glass construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V ±5% at IZT = 0.5 mA - defines primary reference accuracy under standard bias condition |
| Temperature Coefficient (αVZ) | ±0.01%/°C over 0°C to +75°C - ensures <0.64 mV/°C drift in critical mid-range thermal zones |
| Zener Test Current (IZT) | 0.5 mA - optimal bias point for specified VZ and TC; power dissipation remains <30 mW |
| Dynamic Impedance (ZZT) | 200 Ω at IZT = 0.5 mA - limits output voltage variation under load transients |
| Max Reverse Current (IR) | 2.0 µA at VR = 3 V - confirms low leakage for high-impedance reference node integrity |
| Operating Temperature | –65°C to +175°C - supports aerospace, downhole, and military systems with extreme thermal cycling |
| Package | DO-7 (DO-204AA) glass axial-leaded - hermetically sealed, MIL-STD-750 compliant, tin-lead plated leads |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with cathode band marking; leads are tin-lead plated per MIL-STD-750 Method 2026. Device operates with banded (cathode) end positive relative to anode - reverse-biased configuration as a shunt reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference ground return | Low-impedance DC return path; must be connected to system ground or lowest potential node |
| Cathode (banded end) | Reference voltage output | Provides regulated 6.4 V when reverse-biased; connects to load and bias resistor in shunt topology |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated Zener structure | Metallurgically bonded junction enabling ±0.01%/°C TC over 0°C–75°C without external compensation |
| Hermetic glass encapsulation | DO-7 package withstands –65°C to +175°C operation and meets MIL-STD-750 mechanical reliability standards |
| MIL-PRF-19500/452 qualification path | Add JAN/JANTX/JANTXV prefix + "–1" suffix (e.g., JANTX1N4565A–1) for screened military-grade versions |
| Tape-and-reel packaging | "TR" suffix denotes EIA-296 compliant reel format for SMT placement compatibility and traceable lot control |
| Nonsensitive to ESD | Qualified per MIL-STD-750 Method 1020 - no special handling required during board assembly |
Applications
| High-Precision Instrumentation | Aerospace Avionics Power Monitoring |
|---|---|
|
Use Scenario: Calibration circuitry in portable multimeters and benchtop DMMs requiring stable 6.4 V reference over –20°C to +60°C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference providing error-free ADC/DAC reference voltage. Use Value: ±0.01%/°C TC ensures ≤0.64 mV/°C drift, directly supporting 0.01% full-scale accuracy without recalibration. |
Use Scenario: Voltage supervision in flight control computers where reference stability must survive thermal shock and radiation exposure. IC Role / Device Role / Timing Role: Primary shunt reference for analog sensor signal conditioning and power rail monitoring. Use Value: Hermetic DO-7 package and –65°C to +175°C rating enable uninterrupted operation during rapid cabin depressurization or engine bay heat soak. |
| Military Grade Data Acquisition | Downhole Oil & Gas Sensors |
|
Use Scenario: Signal chain reference in ruggedized field-deployable DAQ modules used in electronic warfare systems. IC Role / Device Role / Timing Role: Precision voltage reference for multiplexed analog front-end with 24-bit sigma-delta ADCs. Use Value: MIL-PRF-19500/452 qualification path (via JANTXV prefix) guarantees screening for vibration, shock, and burn-in reliability. |
Use Scenario: Pressure and temperature transducer excitation in borehole telemetry tools exposed to 150°C+ ambient. IC Role / Device Role / Timing Role: Stable bias source for Wheatstone bridge sensors and analog-to-digital conversion references. Use Value: Continuous operation at +175°C with <2 µA leakage at 3 V ensures reference integrity even after prolonged high-temperature soak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4566A/TR | Same DO-7 package and 6.4 V nominal voltage, but ±0.005%/°C TC (vs. ±0.01%/°C for 1N4565A/TR) | Better TC suits ultra-high-precision lab equipment; requires tighter thermal management due to lower TC sensitivity | Select when TC improvement justifies cost premium and layout allows optimized thermal isolation |
| 1N4570A/TR | Same 0.5 mA IZT and DO-7 package, but ±0.01%/°C TC and 100 Ω ZZT (vs. 200 Ω for 1N4565A/TR) | Lower dynamic impedance improves transient rejection in fast-switching power monitor circuits | Prefer for applications demanding faster response to load steps while retaining identical TC and voltage grade |
Compared with 1N4565A/TR, 1N4566A/TR offers improved temperature coefficient at the expense of higher unit cost and tighter thermal design constraints, while 1N4570A/TR provides lower dynamic impedance for better AC regulation-both retain identical package, voltage grade, and military qualification path.
Availability
1N4565A/TR is available at Aetrix Electronics and suitable for high-reliability instrumentation, aerospace avionics, and military data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 1N4565A/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 RF components for defense, aerospace, and industrial markets.
The 1N4565A/TR belongs to Microsemi's legacy 1N45xxA temperature-compensated Zener reference diode product line, designed specifically for mission-critical voltage reference applications where long-term stability and extreme environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4565A/TR?
The 1N4565A/TR has a nominal Zener voltage of 6.4 V with a tolerance of ±5% at 0.5 mA test current and 25°C. Tighter tolerances (e.g., ±1%, ±2%) are available via custom ordering with suffixes like "-1%" or "-2%", but the standard 1N4565A/TR variant ships with the base ±5% specification confirmed in Microsemi's REV B datasheet.
Does 1N4565A/TR support military qualification?
Yes - the 1N4565A/TR can be qualified to MIL-PRF-19500/452 by adding appropriate prefixes and suffixes: e.g., JANTX1N4565A-1 or JANTXV1N4565A-1. The base 1N4565A/TR is commercial-grade but shares identical DO-7 package, metallurgical construction, and electrical specs with its screened military variants.
What is the maximum power dissipation for 1N4565A/TR?
The 1N4565A/TR is rated for 500 mW DC power dissipation at 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 IZT, resulting in ~3.2 mW nominal dissipation (6.4 V × 0.5 mA).
Is 1N4565A/TR compatible with lead-free soldering processes?
No - the 1N4565A/TR features tin-lead plated leads per MIL-STD-750 Method 2026 and is rated for soldering at 260°C for 10 seconds maximum. Lead-free reflow profiles (typically >260°C peak) exceed this limit and may compromise hermeticity or metallurgical bond integrity; use only with SnPb soldering processes.
How does the temperature coefficient of 1N4565A/TR compare to other devices in the 1N45xxA family?
The 1N4565A/TR has a temperature coefficient of ±0.01%/°C, matching the 1N4565 and 1N4570 variants. It is less precise than 1N4566A/TR (±0.005%/°C) and 1N4569A/TR (±0.0005%/°C), but offers the broadest operational temperature range (–65°C to +175°C) among all 0.5 mA IZT members of the family.
1N4565A/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)
1N4565A/TR FAQ
1.How can I place an order for 1N4565A/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4565A/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 1N4565A/TR reliable?
The price and inventory of 1N4565A/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4565A/TR is usually 5 days.
3.What payment methods are accepted for 1N4565A/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4565A/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4565A/TR?
1N4565A/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4565A/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 1N4565A/TR?
For technical support, including 1N4565A/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4565A/TR requirements.
6.How does Aetrix verify that 1N4565A/TR is sourced from the original manufacturer or authorized distributors?
All 1N4565A/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 1N4565A/TR meets industry standards.
7.What is the process for return or replacement of 1N4565A/TR?
All 1N4565A/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4565A/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 1N4565A/TR part is unused and in its original packaging.
Return procedure for 1N4565A/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4565A/TR Tags
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