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Microchip Technology 1N825AUR/TR
- Part No.:
- 1N825AUR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N825AUR/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:142
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Product details
Overview
1N825AUR/TR from Microsemi is a surface-mount, temperature-compensated Zener reference diode in DO-213AA (MELF) glass package, delivering 6.2 V nominal Zener voltage ±5% at 7.5 mA test current, with 10 Ω dynamic impedance, 0.002 %/°C effective temperature coefficient, and 19 mV max voltage drift over –55 °C to +100 °C - used in precision instrumentation voltage references.
For engineers reviewing the 1N825AUR/TR datasheet, 1N825AUR/TR pinout, 1N825AUR/TR application, or 1N825AUR/TR equivalent, key selection criteria include Zener impedance, temperature coefficient stability, hermetic glass packaging, RoHS compliance (e3 marking), and MIL-PRF-19500/159 qualification eligibility for high-reliability analog circuits.
Technical Context
The 1N825AUR/TR employs internal metallurgical bonding and double-plug construction to achieve low thermal hysteresis and long-term voltage stability. Its compensated Zener structure minimizes voltage drift across temperature extremes while maintaining tight regulation under varying load currents.
Designed for operation at IZT = 7.5 mA, it delivers optimal TC performance (0.002 %/°C) and low dynamic impedance (10 Ω), with reverse leakage ≤2 µA at 3 V and junction temperature range of –55 °C to +175 °C - supporting stable biasing in analog front-ends and calibration subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 5.89–6.51 V at 7.5 mA - ensures 6.2 V nominal reference with ±5% tolerance for precision analog design |
| Dynamic Impedance | 10 Ω at 7.5 mA - enables low output impedance for minimal regulation error under current variation |
| Temp. Coefficient | 0.002 %/°C - guarantees <±0.024 % total drift over –55 °C to +100 °C (19 mV max ΔVZ) |
| Max Reverse Leakage | 2 µA at 3 V - supports low-power standby modes without compromising reference accuracy |
| Power Dissipation | 500 mW at 25 °C - allows robust operation in industrial environments with derating above 25 °C |
| Package | DO-213AA (MELF) glass - provides hermetic sealing, high reliability, and compatibility with reflow soldering |
Pinout & Package
DO-213AA (MELF) glass package: cylindrical, axial-symmetric, hermetically sealed, cathode band marked on one end; terminals are non-polarized metallized ends - operated with banded end positive (anode grounded).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Positive terminal in reference configuration | Connected to regulated output node; requires positive bias relative to anode for Zener conduction |
| Anode (unmarked end) | Reference ground node | Typically tied to system ground or bias rail; completes Zener current path through external resistor |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | 0.002 %/°C TC enables sub-20 mV total drift over –55 °C to +100 °C without external circuitry |
| Hermetic glass MELF | DO-213AA package ensures long-term stability, moisture resistance, and MIL-spec reliability |
| Low dynamic impedance | 10 Ω at 7.5 mA reduces output voltage variation under load transients in precision DAC/ADC references |
| RoHS-compliant plating | e3 marking confirms annealed matte-tin termination compatible with lead-free reflow profiles |
Applications
| High-Accuracy Data Acquisition | Calibration Equipment |
|---|---|
Use Scenario: Precision ADC/DAC reference in portable multimeters and sensor signal chains requiring stable 6.2 V bias. IC Role / Device Role / Timing Role: Primary voltage reference source for analog-to-digital conversion stages. Use Value: 10 Ω ZZT and 0.002 %/°C TC ensure <±0.01% full-scale error contribution across operating temperature. | Use Scenario: Onboard reference in handheld calibrators verifying industrial transmitters and process sensors. IC Role / Device Role / Timing Role: Stable excitation source for bridge-based sensor excitation and ratiometric measurement. Use Value: Hermetic DO-213AA construction prevents parameter shift during field deployment and storage. |
| Military Avionics Power Monitoring | Medical Instrumentation Biasing |
Use Scenario: Reference in power supply telemetry modules monitoring 28 V DC bus in aircraft subsystems. IC Role / Device Role / Timing Role: Zener-regulated shunt reference for isolated voltage sensing amplifiers. Use Value: Qualified per MIL-PRF-19500/159 (JANTXV option available) ensures traceable reliability in safety-critical systems. | Use Scenario: Bias reference for ECG amplifier front-ends and patient-isolated analog signal conditioning. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference for biopotential measurement circuits. Use Value: ≤2 µA reverse leakage at 3 V avoids loading sensitive input stages and preserves common-mode rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N825UR/TR | 15 Ω ZZT vs. 10 Ω; same VZ, TC, and package; non-RoHS (SnPb plating) | Not suitable for lead-free assembly; identical electrical performance in non-RoHS production | Select when legacy SnPb soldering is required and RoHS compliance is not mandated |
| BZX84-C6V2LT1G | Surface-mount SOT-23; 6.2 V ±5%; 60 Ω ZZT; 0.05 %/°C TC; 100 mW PD | Lower power rating and higher TC limit performance in wide-temperature medical/military use | Choose only for cost-sensitive commercial designs where tighter TC and hermeticity are not required |
Compared with 1N825UR/TR and BZX84-C6V2LT1G, the 1N825AUR/TR offers superior temperature stability (0.002 %/°C), lower dynamic impedance (10 Ω), and hermetic DO-213AA packaging - making it the preferred choice for high-reliability, precision analog reference applications demanding long-term calibration integrity.
Availability
1N825AUR/TR is available at Aetrix Electronics and suitable for high-accuracy data acquisition, calibration equipment, military avionics power monitoring, and medical instrumentation biasing requiring stable component supply and traceable sourcing.
Supply support for 1N825AUR/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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.
The 1N825AUR/TR belongs to Microsemi's legacy MIL-qualified Zener reference diode family, engineered specifically for precision voltage referencing in mission-critical analog systems where long-term stability and environmental resilience are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N825AUR/TR?
The 1N825AUR/TR has a Zener voltage range of 5.89 V to 6.51 V at 7.5 mA test current, corresponding to a nominal 6.2 V ±5% tolerance. This specification is confirmed in the Electrical Characteristics table of Microsemi T4-LDS-0220-1 Rev. 2, and applies to all 1N825AUR/TR units regardless of RoHS compliance status.
Is the 1N825AUR/TR RoHS compliant?
Yes, the "A" in 1N825AUR/TR denotes RoHS-compliant annealed matte-tin plating (e3 marking), per Microsemi's nomenclature guide. This version is qualified for commercial applications only; military-grade variants (e.g., JANTXV) retain SnPb plating and are not RoHS compliant.
What is the maximum operating temperature for the 1N825AUR/TR?
The 1N825AUR/TR has a junction and storage temperature range of –55 °C to +175 °C. Its voltage stability is characterized over –55 °C to +100 °C, with a maximum total drift of 19 mV in that interval - verified in the Electrical Characteristics table under ∆VZT MAX.
Does the 1N825AUR/TR require external temperature compensation?
No, the 1N825AUR/TR integrates internal temperature compensation via metallurgical bond and double-plug construction, achieving a low effective temperature coefficient of 0.002 %/°C. No external components are needed to meet its specified drift performance over –55 °C to +100 °C.
What does the "TR" suffix mean in 1N825AUR/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-481-B standard using 12 mm carrier tape - intended for automated SMT placement. This packaging format is explicitly noted in the Mechanical and Packaging section of Microsemi's T4-LDS-0220-1 datasheet.
1N825AUR/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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N825AUR/TR FAQ
1.How can I place an order for 1N825AUR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N825AUR/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 1N825AUR/TR reliable?
The price and inventory of 1N825AUR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N825AUR/TR is usually 5 days.
3.What payment methods are accepted for 1N825AUR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N825AUR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N825AUR/TR?
1N825AUR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N825AUR/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 1N825AUR/TR?
For technical support, including 1N825AUR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N825AUR/TR requirements.
6.How does Aetrix verify that 1N825AUR/TR is sourced from the original manufacturer or authorized distributors?
All 1N825AUR/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 1N825AUR/TR meets industry standards.
7.What is the process for return or replacement of 1N825AUR/TR?
All 1N825AUR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N825AUR/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 1N825AUR/TR part is unused and in its original packaging.
Return procedure for 1N825AUR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N825AUR/TR Tags
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