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Microchip Technology 1N4567/TR
- Part No.:
- 1N4567/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AA, DO-7, Axial
- Datasheet:
-
1N4567/TR.pdf
- Description:
- DIODE ZENER 6.4V 500MW DO7
- Quantity:
- Payment:
- Shipping:
Inventory:3,574
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Product details
Overview
1N4567/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, ±0.002 %/°C temperature coefficient, 200 Ω dynamic impedance, and operation from –65 °C to +175 °C. It delivers high-stability voltage reference for precision analog instrumentation and aerospace power supply feedback loops.
For engineers reviewing the 1N4567/TR datasheet, 1N4567/TR pinout, 1N4567/TR application, or 1N4567/TR equivalent, key selection criteria include its ultra-low TC (0.002 %/°C), tight 6.4 V nominal tolerance, hermetic DO-7 packaging, military-grade qualification path, and suitability for high-reliability voltage reference designs requiring minimal drift over temperature.
Technical Context
The 1N4567/TR uses internal metallurgical bonding to achieve stable Zener breakdown at precisely 6.4 V with minimal thermal hysteresis. Its temperature compensation architecture reduces voltage drift to just ±0.002 %/°C across 0 to +75 °C, verified at 0.5 mA test current.
This device operates as a two-terminal passive reference element with cathode-banded polarity, requiring forward-biased reverse operation. It supports DC power dissipation up to 500 mW at 25 °C ambient but is optimized for ≤30 mW operation to maintain specified TC performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 6.4 V ±5% nominal - defines primary reference point for closed-loop regulation and calibration circuits |
| Temperature Coefficient | ±0.002 %/°C - enables <±0.15 mV/°C drift in precision references over 0 to +75 °C range |
| Zener Test Current | 0.5 mA - operating point where VZ, TC, and ZZT are guaranteed per JEDEC spec |
| Dynamic Impedance | 200 Ω @ IZT - limits load-induced voltage variation under small-signal AC perturbation |
| Max Reverse Current | 2.0 µA @ 3 V - ensures negligible leakage error in high-impedance reference node applications |
| Operating Temp Range | –65 °C to +175 °C - supports deployment in extended-environment avionics 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 cathode band marking; leads are tin-lead plated and solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground terminal | Connected to circuit common; reverse-biased operation requires cathode > anode |
| Cathode | Reference output terminal | Banded end; supplies stable 6.4 V when reverse-biased at 0.5 mA; polarity must be observed |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated Zener structure | 0.002 %/°C TC enables sub-millivolt stability over industrial and military temperature ranges |
| Hermetic DO-7 glass package | Ensures long-term parameter stability and moisture resistance in harsh environments |
| MIL-PRF-19500/452 qualification path | Supports JAN/JANTX/JANTXV versions with "-1" suffix for defense and space-grade programs |
| Nonsensitive to ESD | Complies with MIL-STD-750 Method 1020 - no special handling required during assembly |
Applications
| Avionics Power Monitoring | Satellite DC-DC Converter Feedback |
|---|---|
Use Scenario: Real-time bus voltage supervision in flight control power distribution units. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference providing stable 6.4 V setpoint for comparator-based overvoltage detection. Use Value: Ultra-low TC (0.002 %/°C) prevents false trips across –55 °C to +100 °C operational range. |
Use Scenario: Precision feedback node in radiation-tolerant isolated DC-DC converters onboard LEO satellites. IC Role / Device Role / Timing Role: Primary reference element in optocoupler-isolated voltage loop; referenced to secondary-side ground. Use Value: Hermetic DO-7 package and –65 °C to +175 °C rating support mission-critical reliability in vacuum and thermal cycling environments. |
| Downhole Oilfield Sensor Calibration | High-Temperature Industrial PLC Analog Input |
Use Scenario: On-sensor voltage reference for strain gauge signal conditioning in drill-string telemetry tools. IC Role / Device Role / Timing Role: Stable 6.4 V bias source for ratiometric ADC excitation and offset correction. Use Value: Operation up to +175 °C and low TC minimize calibration drift during extended deep-well deployments. |
Use Scenario: Reference node in modular analog input modules for refinery process controllers exposed to ambient heat. IC Role / Device Role / Timing Role: Passive Zener reference replacing IC-based references to reduce failure modes in high-temp enclosures. Use Value: 200 Ω dynamic impedance and 0.5 mA IZT allow direct integration with op-amp buffers without gain error amplification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4567A/TR | Same 6.4 V / 0.5 mA / 0.002 %/°C spec, but tighter initial VZ tolerance (±1% vs ±5%) and qualified to JANTXV with "-1" suffix | Required where MIL-PRF-19500/452 compliance or tighter factory calibration is mandated | Select 1N4567A/TR when traceable calibration data, radiation-hardened variants (RH prefix), or extended qualification are needed |
| 1N4568/TR | Identical DO-7 package and 0.5 mA IZT, but lower TC of ±0.001 %/°C and same 6.4 V nominal | Used where ultra-low drift (<±0.06 mV/°C) is prioritized over cost or availability | Choose 1N4568/TR only if system-level TC budget demands improvement beyond 0.002 %/°C |
Compared with 1N4567/TR, the 1N4567A/TR adds military qualification and tighter VZ tolerance without changing TC or package, while 1N4568/TR improves TC by 2× at the expense of marginally higher cost and reduced inventory depth - both require explicit validation for drop-in use in existing layouts.
Availability
1N4567/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite DC-DC converter feedback, and downhole oilfield sensor calibration requiring stable component supply across extended temperature and reliability requirements.
Supply support for 1N4567/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, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N4565–1N4584A series was designed specifically to deliver ultra-stable 6.4 V reference performance across extreme temperatures using temperature-compensated Zener physics and hermetic DO-7 packaging.
FAQ
What is the Zener test current for 1N4567/TR?
The 1N4567/TR is characterized at a Zener test current (IZT) of 0.5 mA, as specified in the Electrical Characteristics table. This current defines the operating point where its 6.4 V nominal voltage, ±0.002 %/°C temperature coefficient, and 200 Ω dynamic impedance are guaranteed. Operating significantly above or below this value may degrade TC performance or increase impedance.
Does 1N4567/TR have military qualification?
The base 1N4567/TR is not inherently qualified, but it belongs to a family eligible for MIL-PRF-19500/452 certification. Adding prefixes like JANTX or JANTXV and the "-1" suffix (e.g., JANTX1N4567A-1) yields qualified versions. The TR suffix indicates tape-and-reel packaging per EIA-296 and does not imply military status.
What is the maximum operating temperature for 1N4567/TR?
The 1N4567/TR is rated for continuous operation from –65 °C to +175 °C, as confirmed in the Maximum Ratings section. This wide range supports use in downhole, avionics, and industrial environments where ambient temperatures exceed standard commercial limits. Derating applies above 25 °C ambient for power dissipation.
How is polarity marked on 1N4567/TR?
The 1N4567/TR uses a cathode band - a single painted stripe near one lead end - to identify the cathode terminal. The banded end must be held at a more positive potential than the anode for proper Zener operation. Reversing polarity subjects the device to forward conduction and invalidates reference functionality.
Is 1N4567/TR compatible with lead-free soldering processes?
No - the 1N4567/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 exceed 260 °C peak temperature and may damage the glass-to-metal seal. For RoHS-compliant alternatives, consult Microchip's updated DO-7 Zener portfolio with SnAgCu plating.
1N4567/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AA, DO-7, 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-7
1N4567/TR FAQ
1.How can I place an order for 1N4567/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4567/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 1N4567/TR reliable?
The price and inventory of 1N4567/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4567/TR is usually 5 days.
3.What payment methods are accepted for 1N4567/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4567/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4567/TR?
1N4567/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4567/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 1N4567/TR?
For technical support, including 1N4567/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4567/TR requirements.
6.How does Aetrix verify that 1N4567/TR is sourced from the original manufacturer or authorized distributors?
All 1N4567/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 1N4567/TR meets industry standards.
7.What is the process for return or replacement of 1N4567/TR?
All 1N4567/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4567/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 1N4567/TR part is unused and in its original packaging.
Return procedure for 1N4567/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4567/TR Tags
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