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Microchip Technology 1N4565A-1/TR
- Part No.:
- 1N4565A-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4565A-1/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:5,616
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Product details
Overview
1N4565A-1/TR from Microsemi is a temperature-compensated 6.4 V Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for ±5% nominal voltage tolerance, 0.01%/°C temperature coefficient, 0.5 mA Zener test current, and 200 Ω dynamic impedance at IZT, used in precision analog instrumentation requiring stable voltage references over -55°C to +100°C operating range.
For engineers reviewing the 1N4565A-1/TR datasheet, 1N4565A-1/TR pinout, 1N4565A-1/TR application, or 1N4565A-1/TR equivalent, this part delivers low-drift voltage referencing with hermetic glass packaging, MIL-PRF-19500/452 qualification capability (with -1 suffix), and ESD insensitivity per MIL-STD-750 Method 1020 - critical for aerospace, defense, and high-reliability industrial systems.
Technical Context
This device belongs to Microsemi's zero-temperature-coefficient Zener family, where the 1N4565A variant uses internal metallurgical bonding to achieve 0.01%/°C TC across 0 to +75°C, with specified Zener voltage measured 15 seconds after applying 0.5 mA DC test current. Its 6.4 V nominal output is stabilized via dual-Zener junction compensation.
The DO-7 package supports axial-leaded through-hole mounting, tin-lead plated leads compliant with MIL-STD-750 Method 2026, and operates up to 175°C storage temperature. Reverse leakage is limited to ≤2.0 µA at 3 V, and power dissipation is rated at 500 mW at 25°C lead temperature (TL), though optimal stability occurs below 30 mW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 6.4 V ±5% - defines primary reference accuracy under 0.5 mA test current at 25°C |
| Temperature Coefficient | 0.01%/°C - ensures minimal drift over 0 to +75°C operating range, critical for precision analog circuits |
| Zener Test Current (IZT) | 0.5 mA - required bias current to achieve specified VZ and TC performance |
| Dynamic Impedance (ZZT) | 200 Ω - indicates low AC impedance at IZT, supporting stable regulation under small-signal variations |
| Max Reverse Current (IR) | ≤2.0 µA @ 3 V - confirms low leakage, essential for high-impedance reference node integrity |
| Package | DO-7 (DO-204AA) - hermetically sealed glass axial-leaded package enabling military-grade reliability and thermal robustness |
| Operating Temperature Range | -55°C to +100°C - validated voltage stability range for high-reliability instrumentation applications |
Pinout & Package
DO-7 (DO-204AA) hermetically sealed glass package with two axial leads: cathode identified by band marking; anode is unbanded end. Designed for through-hole mounting with tin-lead plated solderable leads per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reference output node | Positive terminal when operated as voltage reference; must be biased higher than anode to maintain Zener conduction |
| Anode (unbanded end) | Reference return node | Ground or low-side reference point; polarity reversal prevents proper Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Temperature coefficient of 0.01%/°C | Enables <0.77 mV/°C drift over 0–75°C, supporting sub-millivolt stability in calibrated measurement systems |
| Hermetic glass DO-7 package | Provides long-term parameter stability and immunity to humidity-induced degradation in harsh environments |
| MIL-PRF-19500/452 qualification path | Supports JANTXV-level screening with -1 suffix, meeting stringent reliability requirements for aerospace and defense programs |
| Nonsensitive to ESD (MIL-STD-750 Method 1020) | Eliminates need for on-board ESD protection circuitry during handling and assembly in production lines |
| Tape-and-reel packaging (TR suffix) | Enables automated SMT-compatible placement despite axial-leaded form factor, reducing manual assembly cost |
Applications
| High-Precision ADC Reference | Aerospace Power Monitor |
|---|---|
|
Use Scenario: Providing stable 6.4 V reference for 16-bit SAR ADCs in satellite telemetry front-ends. IC Role / Device Role / Timing Role: Primary voltage reference source for analog-to-digital conversion accuracy. Use Value: 0.01%/°C TC ensures <±0.5 LSB error contribution over -40°C to +85°C operational envelope. |
Use Scenario: Calibrating bus voltage sensors in radiation-tolerant power distribution units aboard launch vehicles. IC Role / Device Role / Timing Role: Precision shunt reference for isolated feedback loops in DC-DC converters. Use Value: Hermetic DO-7 construction maintains calibration integrity under thermal cycling and vacuum exposure. |
| Defense System DAC Calibration | Industrial Process Controller |
|
Use Scenario: Biasing high-resolution DACs in electronic warfare signal generators requiring traceable metrology. IC Role / Device Role / Timing Role: Stable reference for unipolar/bipolar DAC output scaling. Use Value: ±5% initial tolerance tightened via system calibration; low dynamic impedance minimizes code-dependent errors. |
Use Scenario: Setting setpoints in PLC analog I/O modules deployed in oil refinery control cabinets. IC Role / Device Role / Timing Role: Fixed reference for 4–20 mA transmitter excitation and sensor bridge biasing. Use Value: -55°C to +100°C operating range accommodates ambient extremes without derating or external heating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4565-1/TR | No "A" suffix → ±10% VZ tolerance vs. ±5% for 1N4565A-1/TR; identical TC, IZT, and package | Lower-cost option where system calibration compensates for wider initial tolerance | Select when absolute initial accuracy is less critical than total cost of ownership in high-volume defense subsystems |
| 1N4570A-1/TR | Same 0.01%/°C TC and DO-7 package, but rated for 1.0 mA IZT and 100 Ω ZZT | Better dynamic regulation under varying load conditions; requires higher bias current | Choose when lower impedance and improved transient response outweigh increased quiescent power in battery-constrained avionics |
Compared with 1N4565A-1/TR, 1N4565-1/TR trades initial accuracy for cost savings, while 1N4570A-1/TR improves regulation performance at higher bias - both retain MIL-qualified packaging and thermal stability, enabling drop-in substitution only after verifying bias network compatibility.
Availability
1N4565A-1/TR is available at Aetrix Electronics and suitable for high-reliability aerospace instrumentation, defense-grade power monitoring, and industrial process control applications requiring stable component supply with full traceability and extended lifecycle support.
Supply support for 1N4565A-1/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 1N4565A-1/TR belongs to Microsemi's legacy temperature-compensated Zener reference diode product line, engineered specifically for metrology-grade voltage referencing in mission-critical systems where long-term stability and environmental resilience are non-negotiable.
FAQ
What is the Zener test current specification for the 1N4565A-1/TR?
The 1N4565A-1/TR is specified at a Zener test current (IZT) of 0.5 mA. Voltage measurements must be taken 15 seconds after applying this DC current to ensure thermal stabilization. This value is fixed for the 1N4565A variant and directly determines its 6.4 V ±5% nominal output and 0.01%/°C temperature coefficient performance.
Does the 1N4565A-1/TR meet military specifications?
Yes - the "-1" suffix in 1N4565A-1/TR indicates compliance with MIL-PRF-19500/452 requirements when ordered with appropriate prefixes (e.g., JANTXV1N4565A-1). The base 1N4565A-1/TR retains the same DO-7 package, metallurgical construction, and environmental ratings needed for military qualification pathways.
What does the "TR" suffix indicate in 1N4565A-1/TR?
The "TR" suffix denotes tape-and-reel packaging per EIA-296 standard, enabling automated pick-and-place assembly despite the axial-leaded DO-7 form factor. This configuration preserves full electrical and mechanical specifications of the 1N4565A-1/TR while supporting high-throughput manufacturing for defense and industrial PCBs.
How does the temperature coefficient of the 1N4565A-1/TR affect system accuracy?
The 1N4565A-1/TR has a temperature coefficient of 0.01%/°C over 0 to +75°C, translating to ±0.77 mV drift across that range. In a 16-bit system with 10 V full-scale, this contributes <±0.5 LSB error - making it suitable for applications where calibration intervals exceed field service life and thermal gradients are controlled.
Is the 1N4565A-1/TR sensitive to electrostatic discharge?
No - the 1N4565A-1/TR is explicitly characterized as nonsensitive to ESD per MIL-STD-750 Method 1020. Its hermetic glass construction and internal metallurgical bonding eliminate gate oxide or junction damage risks common in silicon-based references, simplifying handling and eliminating need for ESD-safe workstations during board assembly.
1N4565A-1/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:
- ±1%
- 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-1/TR FAQ
1.How can I place an order for 1N4565A-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4565A-1/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-1/TR reliable?
The price and inventory of 1N4565A-1/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-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4565A-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4565A-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4565A-1/TR?
1N4565A-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4565A-1/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-1/TR?
For technical support, including 1N4565A-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4565A-1/TR requirements.
6.How does Aetrix verify that 1N4565A-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4565A-1/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-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4565A-1/TR?
All 1N4565A-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4565A-1/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-1/TR part is unused and in its original packaging.
Return procedure for 1N4565A-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4565A-1/TR Tags
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MMBZ5240B-7-F
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MMSZ5231B-7-F
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BZX84C3V3LT1G
onsemi
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