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Microchip Technology 1N756AUR-1/TR
- Part No.:
- 1N756AUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N756AUR-1/TR.pdf
- Description:
- DIODE ZENER 8.2V 400MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:611
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Product details
Overview
1N756AUR-1/TR from Microsemi is a hermetically sealed, surface-mount silicon zener diode with a nominal zener voltage of 8.2 V ±5%, 20 mA test current, 8 Ω dynamic impedance at 20 mA, 1 µA maximum reverse leakage at 6.0 V, and 50 mA maximum zener current. It operates in precision voltage regulation for low-power analog reference circuits.
For engineers reviewing the 1N756AUR-1/TR datasheet, 1N756AUR-1/TR pinout, 1N756AUR-1/TR application, or 1N756AUR-1/TR equivalent, key selection criteria include zener tolerance (±5%), thermal resistance (100 °C/W), MELF DO-213AA package compatibility, and MIL-PRF-19500/127 qualification for high-reliability aerospace and defense systems.
Technical Context
This device functions as a two-terminal voltage reference diode operating in reverse breakdown mode. Its zener voltage is specified at 25°C ambient with 20 mA test current and exhibits 8 Ω dynamic impedance under that condition, enabling stable regulation in low-noise analog supply rails.
The 1N756AUR-1/TR uses a metallurgically bonded, hermetically sealed glass DO-213AA (MELF/SOD-80/LL34) package with tin/lead termination and is rated for operation from –65°C to +175°C, supporting high-temperature avionics and downhole instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 8.2 V ±5% @ 20 mA - defines precise DC reference level for feedback loops and biasing |
| Zener Impedance | 8 Ω @ 20 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage | ≤1 µA @ 6.0 V - guarantees low standby power loss in always-on reference circuits |
| Max Power Dissipation | 500 mW @ TEC = +125°C - sets thermal design margin for PCB trace width and copper area |
| Operating Temp Range | –65°C to +175°C - enables deployment in extreme-environment military and oilfield electronics |
| Package | DO-213AA (MELF) - provides robust mechanical integrity and hermetic sealing for long-term reliability |
Pinout & Package
DO-213AA (MELF) hermetically sealed glass package with axial symmetry; cathode identified by single black band. No discrete pins - terminals are metallized end caps; polarity must be observed during placement (cathode end positive in regulation mode).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink terminal in reverse-bias regulation | Connected to lower-potential node (e.g., ground or return path) during zener operation |
| Cathode (banded end) | Reference voltage output terminal | Delivers stable 8.2 V relative to anode; must be routed with low-inductance traces for noise-sensitive references |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/127 Qualified | Meets stringent screening, testing, and traceability requirements for space- and defense-critical applications |
| Hermetic Glass Encapsulation | Prevents moisture ingress and parameter drift over decades of operation in humid or corrosive environments |
| ±5% Zener Tolerance (A suffix) | Reduces calibration overhead in production test vs. ±10% standard parts, improving yield in precision analog assemblies |
| 100 °C/W Junction-to-Case Thermal Resistance | Enables thermal modeling for board-level reliability prediction without forced airflow or heatsinking |
Applications
| Avionics Power Monitoring | Satellite Payload Reference |
|---|---|
Use Scenario: Monitoring 28 V aircraft bus voltage via resistive divider into ADC input. IC Role / Device Role / Timing Role: Zener reference providing stable 8.2 V scaling point for analog-to-digital conversion. Use Value: ±5% tolerance and <1 µA leakage ensure measurement accuracy remains within MIL-STD-704E compliance limits across temperature. | Use Scenario: Biasing op-amps and voltage comparators in radiation-hardened satellite telemetry circuits. IC Role / Device Role / Timing Role: Precision voltage reference establishing threshold levels for fault detection logic. Use Value: Hermetic DO-213AA packaging prevents parametric shift after 10 krad(Si) total ionizing dose exposure. |
| Downhole Sensor Conditioning | Tactical Radio RF Detector |
Use Scenario: Regulating excitation voltage for piezoresistive pressure transducers in oil/gas well logging tools. IC Role / Device Role / Timing Role: Low-drift zener supplying stable 8.2 V to bridge sensor excitation circuitry. Use Value: Operation up to +175°C eliminates need for external thermal compensation in high-temperature probe housings. | Use Scenario: Peak-detecting RF envelope signal in S-band tactical radio receiver front-end. IC Role / Device Role / Timing Role: Fast-response zener clamping detector diode in logarithmic amplifier stage. Use Value: 8 Ω dynamic impedance minimizes distortion when rectifying low-amplitude RF signals near noise floor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N756A-1 (DO-35) | Same electrical specs but axial leaded DO-35 package; no hermetic seal; higher thermal resistance (200 °C/W) | Not suitable for high-humidity or vacuum environments; limited to commercial-grade PCB assembly | Select only for cost-sensitive terrestrial industrial controls where MIL-spec reliability is not required |
| BZX84-C8V2 (SOT-23) | ±5% tolerance, 8.2 V, but plastic package; 150 °C max operating temp; 15 Ω zener impedance | Lacks hermeticity and extended temperature range; unsuitable for aerospace or downhole use | Use for consumer or automotive infotainment systems where size and cost outweigh long-term stability needs |
Compared with 1N756A-1 and BZX84-C8V2, the 1N756AUR-1/TR delivers superior long-term stability, hermetic reliability, and extended temperature capability-critical for mission-critical systems where field failure is unacceptable.
Availability
1N756AUR-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite payload reference, and downhole sensor conditioning requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N756AUR-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) designs high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N756AUR-1/TR belongs to Microsemi's legacy MIL-PRF-19500/127 qualified zener diode family, engineered specifically for precision voltage reference applications in harsh-environment electronics.
FAQ
What is the zener voltage tolerance of the 1N756AUR-1/TR?
The 1N756AUR-1/TR has a nominal zener voltage of 8.2 V with a tolerance of ±5%, as indicated by the "A" suffix per manufacturer documentation. This tighter tolerance reduces calibration burden in precision analog circuits compared to standard ±10% zeners. The 1N756AUR-1/TR is tested at 20 mA and 25°C ambient, and its voltage remains stable across its full operating temperature range.
Is the 1N756AUR-1/TR hermetically sealed?
Yes, the 1N756AUR-1/TR uses a hermetically sealed DO-213AA glass package, ensuring long-term parameter stability in high-humidity, vacuum, or corrosive environments. This hermetic construction is a key requirement for MIL-PRF-19500/127 qualification and distinguishes the 1N756AUR-1/TR from plastic-packaged alternatives like the BZX84-C8V2. The 1N756AUR-1/TR maintains specification integrity over decades of field operation.
What is the maximum operating temperature for the 1N756AUR-1/TR?
The 1N756AUR-1/TR is rated for continuous operation from –65°C to +175°C, making it suitable for extreme-environment applications such as downhole oilfield tools and jet engine control electronics. Its thermal resistance is 100 °C/W at zero lead length, and power derating begins above +125°C at 10 mW/°C. This wide range is confirmed in the official Microsemi datasheet for the 1N756AUR-1/TR.
Does the 1N756AUR-1/TR have a defined pinout or polarity marking?
Yes - the 1N756AUR-1/TR is a two-terminal axial device in DO-213AA (MELF) format, with polarity marked by a single black cathode band on one end cap. The banded (cathode) end must be held at higher potential than the unbanded (anode) end during zener operation. Unlike leaded diodes, the 1N756AUR-1/TR has no leads; terminals are metallized end caps, and orientation is critical for correct circuit function.
What does the "UR-1/TR" suffix indicate in 1N756AUR-1/TR?
The "UR-1/TR" suffix denotes a surface-mount, tape-and-reel packaged version of the 1N756AUR-1/TR in DO-213AA (MELF) configuration, compliant with MIL-PRF-19500/127. "UR" identifies the hermetic glass MELF variant; "-1" indicates JAN-class screening; "TR" specifies tape-and-reel packaging for automated placement. This distinguishes it from through-hole versions like 1N756A-1 and ensures consistent handling in high-reliability SMT lines.
1N756AUR-1/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N756AUR-1/TR FAQ
1.How can I place an order for 1N756AUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N756AUR-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 1N756AUR-1/TR reliable?
The price and inventory of 1N756AUR-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 1N756AUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N756AUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N756AUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N756AUR-1/TR?
1N756AUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N756AUR-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 1N756AUR-1/TR?
For technical support, including 1N756AUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N756AUR-1/TR requirements.
6.How does Aetrix verify that 1N756AUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N756AUR-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 1N756AUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N756AUR-1/TR?
All 1N756AUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N756AUR-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 1N756AUR-1/TR part is unused and in its original packaging.
Return procedure for 1N756AUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N756AUR-1/TR Tags
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