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Microchip Technology 1N4565A-1E3/TR
- Part No.:
- 1N4565A-1E3/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4565A-1E3/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
1N4565A-1E3/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 Zener test current, ±0.01%/°C temperature coefficient, and 200 Ω dynamic impedance at IZT, used in precision voltage references for aerospace instrumentation and high-reliability analog circuits.
For engineers reviewing the 1N4565A-1E3/TR datasheet, 1N4565A-1E3/TR pinout, 1N4565A-1E3/TR application, or 1N4565A-1E3/TR equivalent, key selection criteria include its hermetically sealed DO-7 package, MIL-PRF-19500/452 qualification capability with -1 suffix, tight 6.4 V ±5% nominal tolerance, and low-TC operation across –65°C to +175°C.
Technical Context
This device belongs to Microsemi's zero-temperature-coefficient Zener family optimized for minimal voltage drift over temperature. It achieves 0.01%/°C TC via internal metallurgical bonding of complementary Zener and forward-biased junctions, operating at 0.5 mA IZT with 200 Ω dynamic impedance.
The 1N4565A-1E3/TR is specified for 0–75°C TC measurement range and requires ≤30 mW power dissipation for optimal stability. Its cathode-band polarity mandates banded-end-positive biasing, and it supports tape-and-reel packaging per EIA-296 with "TR" suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4 V ±5% nominal - defines stable reference point for calibration-critical analog systems |
| Temperature Coefficient (αVZ) | ±0.01%/°C - ensures <±0.64 mV/°C drift over 0–75°C operating range |
| Zener Test Current (IZT) | 0.5 mA - required bias current to achieve specified VZ and TC performance |
| Dynamic Impedance (ZZT) | 200 Ω @ IZT - limits AC ripple rejection degradation in reference buffers |
| Max Reverse Current (IR) | 2.0 µA @ 3 V - confirms low leakage for high-impedance sensing nodes |
| Operating Temperature | –65°C to +175°C - enables deployment in extended-environment military and downhole electronics |
| Package | DO-7 (DO-204AA) - hermetically sealed glass axial package with tin-lead solderable leads |
Pinout & Package
DO-7 (DO-204AA) glass axial-leaded package with hermetically sealed case, tin-lead plated leads per MIL-STD-750 Method 2026, cathode identified by black band. Weight: 0.2 g. Solderable at 260°C for 10 s max.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Reference diode anode | Connected to circuit ground or lower-potential node when used as shunt reference |
| Cathode (banded end) | Reference diode cathode | Connected to regulated voltage node; must be held positive relative to anode for proper Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation architecture | Metallurgically bonded dual-junction design achieving ±0.01%/°C TC over 0–75°C |
| MIL-PRF-19500/452 qualification path | Supports JANTXV-grade reliability with "-1" suffix and prefix (e.g., JANTXV1N4565A-1) |
| ESD robustness | Nonsensitive to ESD per MIL-STD-750 Method 1020 - eliminates need for external protection in handling |
| Tape-and-reel compatibility | EIA-296 compliant packaging enabled by "TR" suffix - supports automated SMT placement despite axial form factor |
Applications
| Aerospace Instrumentation Calibration | High-Temperature Downhole Sensors |
|---|---|
Use Scenario: Precision DC voltage reference in inertial measurement unit (IMU) signal conditioning circuits exposed to thermal cycling. IC Role / Device Role / Timing Role: Shunt-connected Zener reference providing stable 6.4 V bias for ADC reference buffers and op-amp gain-setting networks. Use Value: ±0.01%/°C TC ensures <±0.5 mV drift over –55°C to +100°C operational range, maintaining calibration integrity without software correction. |
Use Scenario: Voltage reference in pressure/temperature transducer modules deployed in oil/gas wellbores exceeding 150°C. IC Role / Device Role / Timing Role: Primary shunt reference supplying excitation and scaling voltage to Wheatstone bridge interfaces. Use Value: Hermetic DO-7 package and –65°C to +175°C rating enable uninterrupted operation where plastic-packaged alternatives fail. |
| Military Avionics Power Monitoring | Strategic Electronics Reference Standards |
Use Scenario: Supervisory reference in triple-redundant power supply monitors for flight control computers. IC Role / Device Role / Timing Role: High-reliability shunt reference validating 5 V and 12 V rail stability under transient load conditions. Use Value: MIL-PRF-19500/452 qualification path allows direct integration into JANTXV-level assemblies without requalification. |
Use Scenario: Primary reference element in portable field calibration standards used by defense logistics depots. IC Role / Device Role / Timing Role: Stable 6.4 V node serving as traceable baseline for multimeter and DMM calibration routines. Use Value: Tight ±5% initial tolerance and low long-term drift support metrology-grade accuracy without frequent recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4565A-1 | Same electrical specs but bulk packaging (no TR suffix); lacks EIA-296 tape-and-reel compliance | Preferred for manual assembly or low-volume prototyping where reel feed is unnecessary | Select 1N4565A-1E3/TR only when automated placement or inventory standardization requires tape-and-reel format |
| 1N4570A-1E3/TR | Identical DO-7 package and 0.5 mA IZT, but ±0.01%/°C TC and 100 Ω ZZT - lower impedance at same current | Better suited for low-noise reference buffers requiring tighter AC regulation | Choose 1N4570A-1E3/TR if dynamic impedance below 200 Ω is required; otherwise 1N4565A-1E3/TR provides identical TC and voltage spec at lower cost |
Compared with 1N4565A-1E3/TR, the 1N4565A-1 offers identical performance in bulk form but no automated handling support, while 1N4570A-1E3/TR delivers lower dynamic impedance without sacrificing TC or voltage accuracy-making it preferable for noise-sensitive reference buffering.
Availability
1N4565A-1E3/TR is available at Aetrix Electronics and suitable for aerospace instrumentation calibration, high-temperature downhole sensors, and military avionics power monitoring requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N4565A-1E3/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-1E3/TR belongs to Microsemi's Scottsdale Division legacy Zener reference diode product line, engineered specifically for precision voltage referencing in mission-critical systems demanding extreme temperature resilience and long-term stability.
FAQ
What is the Zener test current specification for the 1N4565A-1E3/TR?
The 1N4565A-1E3/TR is specified at a Zener test current (IZT) of 0.5 mA. This current must be applied for 15 seconds before measuring VZ to ensure stable thermal equilibrium and accurate voltage reading per the datasheet. Operating significantly above this current increases power dissipation and may degrade TC performance.
Does the 1N4565A-1E3/TR have military qualification capability?
Yes, the 1N4565A-1E3/TR supports MIL-PRF-19500/452 qualification when ordered with appropriate prefixes and the "-1" suffix (e.g., JANTXV1N4565A-1). The base 1N4565A-1E3/TR itself is commercial-grade but shares identical die and construction with qualified variants, enabling seamless transition to higher reliability grades.
What does the "TR" suffix indicate in 1N4565A-1E3/TR?
The "TR" suffix in 1N4565A-1E3/TR denotes EIA-296 compliant tape-and-reel packaging. This format enables automated pick-and-place assembly despite the DO-7 axial-leaded configuration. The "E3" indicates lead (Pb)-free termination with matte tin plating, fully RoHS-compliant and compatible with standard soldering profiles.
How is polarity marked on the 1N4565A-1E3/TR package?
The 1N4565A-1E3/TR uses a cathode band - a single black stripe near one lead end - to identify the cathode terminal. The device must be operated with the banded end held positive relative to the unbanded (anode) end to maintain Zener breakdown conduction. Reversing polarity subjects it to standard diode forward conduction, not reference operation.
What is the maximum power dissipation rating for the 1N4565A-1E3/TR?
The 1N4565A-1E3/TR has a DC power dissipation rating of 500 mW at lead temperature (TL) = 25°C, with a maximum Zener current (IZM) of 70 mA. However, for optimal voltage-temperature stability, power dissipation should remain below 30 mW - achieved by limiting IZ to ~0.5 mA at 6.4 V - as specified in the Electrical Characteristics table.
1N4565A-1E3/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:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N4565A-1E3/TR FAQ
1.How can I place an order for 1N4565A-1E3/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4565A-1E3/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-1E3/TR reliable?
The price and inventory of 1N4565A-1E3/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-1E3/TR is usually 5 days.
3.What payment methods are accepted for 1N4565A-1E3/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4565A-1E3/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4565A-1E3/TR?
1N4565A-1E3/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4565A-1E3/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-1E3/TR?
For technical support, including 1N4565A-1E3/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4565A-1E3/TR requirements.
6.How does Aetrix verify that 1N4565A-1E3/TR is sourced from the original manufacturer or authorized distributors?
All 1N4565A-1E3/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-1E3/TR meets industry standards.
7.What is the process for return or replacement of 1N4565A-1E3/TR?
All 1N4565A-1E3/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4565A-1E3/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-1E3/TR part is unused and in its original packaging.
Return procedure for 1N4565A-1E3/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4565A-1E3/TR Tags
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