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Microchip Technology 1N829AUR/TR
- Part No.:
- 1N829AUR/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N829AUR/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:96
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Product details
Overview
1N829AUR/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 ultra-low 0.0005 %/°C temperature coefficient and 10 Ω dynamic impedance - used for precision voltage references in high-stability instrumentation and aerospace power conditioning.
For engineers reviewing the 1N829AUR/TR datasheet, 1N829AUR/TR pinout, 1N829AUR/TR application, or 1N829AUR/TR equivalent, key selection criteria include Zener voltage tolerance, temperature coefficient stability over –55°C to +100°C, low dynamic impedance, RoHS compliance status, and MIL-PRF-19500/159 qualification level.
Technical Context
This device is a bonded-glass, double-plug construction Zener diode with hermetically sealed DO-213AA packaging, optimized for minimal voltage drift across wide temperature ranges. Its metallurgical bond and internal compensation structure enable stable regulation at IZT = 7.5 mA, where dissipation remains below 50 mW and thermal derating begins at 3.33 mW/°C above +25°C ambient.
The 1N829AUR/TR operates with cathode band positive polarity and exhibits ≤2 µA reverse leakage at 3 V, ≤5 mV total voltage deviation from –55°C to +100°C, and typical capacitance ≤100 pF - making it suitable for low-noise, high-PSRR analog reference paths in military-grade and space-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 5.89–6.51 V at 7.5 mA - ensures tight 6.2 V nominal reference with ±5% initial tolerance for calibration-critical circuits. |
| Temp. Coefficient | 0.0005 %/°C - enables sub-10 ppm/°C drift, critical for metrology-grade voltage standards over industrial temperature range. |
| Zener Impedance | 10 Ω at 7.5 mA - minimizes load-induced output variation, supporting stable regulation under dynamic current demands. |
| Max. Voltage Drift | ±5 mV from –55°C to +100°C - guarantees absolute reference stability without external trimming in sealed modules. |
| Power Dissipation | 500 mW max at 25°C - allows operation up to 70 mA IZM, but optimal stability achieved at ≤7.5 mA (≤50 mW). |
| Reverse Leakage | ≤2 µA at 3 V - ensures negligible error contribution in high-impedance bias networks and precision dividers. |
Pinout & Package
DO-213AA (MELF) glass package: hermetically sealed, axial cylindrical form with tin-lead or RoHS-compliant matte-tin plating; cathode identified by single black band; polarity requires banded end to be positive relative to opposite terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reference output node | Connected to regulated voltage rail; must be held at higher potential than anode for Zener conduction. |
| Anode (unbanded end) | Current return path | Connected to ground or lower-potential node; completes bias current loop through series resistor. |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | Active metallurgical design achieves 0.0005 %/°C TC - eliminates need for external thermistors or trimming in Class-S reference designs. |
| Bonded-glass construction | Hermetic DO-213AA seal prevents moisture ingress and parameter shift over 20+ year field life in harsh environments. |
| Double-plug architecture | Reduces thermal EMF and improves long-term voltage stability - validated per MIL-PRF-19500/159 for JANS-level reliability. |
| RoHS-compliant option | e3 marking indicates annealed matte-tin plating - meets commercial-grade environmental requirements without sacrificing solderability or shelf life. |
Applications
| High-Precision ADC Reference | Aerospace Power Monitor |
|---|---|
Use Scenario: Providing stable 6.2 V reference for 24-bit sigma-delta ADCs in satellite telemetry front-ends. IC Role / Device Role / Timing Role: Primary voltage reference source for analog-to-digital conversion accuracy. Use Value: ±5 mV total drift over –55°C to +100°C ensures <0.01% full-scale error without recalibration across orbital thermal cycles. | Use Scenario: Regulating feedback voltage in radiation-hardened DC-DC converters for launch vehicle avionics. IC Role / Device Role / Timing Role: Precision shunt reference in isolated error amplifier loops. Use Value: 10 Ω Zener impedance maintains loop stability despite input ripple and load transients up to 10 kHz. |
| Calibration Equipment Standard | Military Test Instrumentation |
Use Scenario: Serving as traceable voltage standard in portable multimeter calibration rigs operating from –25°C to +70°C. IC Role / Device Role / Timing Role: Primary reference element in programmable voltage sources. Use Value: 0.0005 %/°C TC enables direct use in ISO/IEC 17025-certified labs without secondary temperature compensation. | Use Scenario: Embedded in JANTXV-qualified signal conditioners for battlefield radar receivers. IC Role / Device Role / Timing Role: Stable bias reference for RF detector diodes and log amps. Use Value: Non-ESD-sensitive construction (per MIL-STD-750 Method 1020) ensures survivability during field maintenance handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N829UR/TR | Same DO-213AA package and 6.2 V nominal voltage, but 15 Ω Zener impedance vs. 10 Ω for 1N829AUR/TR. | Suitable where tighter impedance is not required; slightly higher output variation under load current changes. | Select 1N829UR/TR when cost sensitivity outweighs need for lowest possible dynamic impedance. |
| LM399H | Monolithic buried-Zener IC with 6.95 V output, oven-controlled (±0.3 ppm/°C), 30x higher power draw, TO-99 metal can. | Used in lab-grade instruments requiring sub-ppm stability; incompatible with MELF footprint or passive biasing. | Choose LM399H only when ultra-low TC (<0.1 ppm/°C) justifies board space, power, and complexity penalties. |
Compared with 1N829UR/TR and LM399H, the 1N829AUR/TR delivers best-in-class TC (0.0005 %/°C) and low impedance (10 Ω) in a compact, passive, RoHS-compliant MELF package - ideal for embedded systems needing MIL-qualified stability without active circuitry.
Availability
1N829AUR/TR is available at Aetrix Electronics and suitable for high-reliability instrumentation, aerospace power monitoring, and military test equipment requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for 1N829AUR/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 components for defense, aerospace, and industrial markets.
The 1N829AUR/TR belongs to Microsemi's legacy MIL-PRF-19500/159-qualified Zener reference diode family, engineered for ultra-stable voltage referencing in mission-critical systems where parametric drift must be minimized across extreme temperatures.
FAQ
What is the Zener voltage tolerance and test condition for 1N829AUR/TR?
The 1N829AUR/TR has a Zener voltage range of 5.89 V to 6.51 V at a test current of 7.5 mA, corresponding to a nominal 6.2 V ±5% tolerance. This specification is measured 15 seconds after applying DC current, per Microsemi T4-LDS-0220-1 Rev. 2. The 1N829AUR/TR achieves this tight tolerance via temperature-compensated bonded-glass construction.
Is 1N829AUR/TR RoHS compliant and what does the "e3" marking indicate?
Yes, the 1N829AUR/TR is RoHS compliant, indicated by the "e3" suffix in its full nomenclature. It features annealed matte-tin plating per MIL-STD-750 Method 2026 and is qualified for commercial applications only. The 1N829AUR/TR is not offered in RoHS-compliant versions for JAN/JANTXV/JANS military grades.
What is the maximum operating temperature range for 1N829AUR/TR?
The 1N829AUR/TR is rated for junction and storage temperatures from –55°C to +175°C. Its voltage stability is guaranteed over –55°C to +100°C, with total Zener voltage deviation limited to ±5 mV across that range. The 1N829AUR/TR uses double-plug construction to maintain performance under thermal cycling stress.
How does the 10 Ω Zener impedance of 1N829AUR/TR affect circuit design?
The 10 Ω dynamic impedance of the 1N829AUR/TR limits output voltage variation to ≤75 mV for a 7.5 mA load step, enabling stable regulation in precision bias networks. Designers must limit operating current to 7.5 mA for optimal TC performance; exceeding this increases impedance and degrades TC. The 1N829AUR/TR's low ZZT supports high-PSRR analog stages without additional filtering.
What qualification levels are available for 1N829AUR/TR and how do they differ from JAN/JANTXV versions?
The 1N829AUR/TR is a commercial-grade part with RoHS compliance (e3) and no military qualification. In contrast, the non-"A" variant 1N829UR/TR supports JAN, JANTX, JANTXV, and JANS levels per MIL-PRF-19500/159 - requiring extended screening, lot traceability, and different plating. The 1N829AUR/TR shares identical electrical specs but lacks military test documentation and screening.
1N829AUR/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:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N829AUR/TR FAQ
1.How can I place an order for 1N829AUR/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N829AUR/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 1N829AUR/TR reliable?
The price and inventory of 1N829AUR/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N829AUR/TR is usually 5 days.
3.What payment methods are accepted for 1N829AUR/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N829AUR/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N829AUR/TR?
1N829AUR/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N829AUR/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 1N829AUR/TR?
For technical support, including 1N829AUR/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N829AUR/TR requirements.
6.How does Aetrix verify that 1N829AUR/TR is sourced from the original manufacturer or authorized distributors?
All 1N829AUR/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 1N829AUR/TR meets industry standards.
7.What is the process for return or replacement of 1N829AUR/TR?
All 1N829AUR/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N829AUR/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 1N829AUR/TR part is unused and in its original packaging.
Return procedure for 1N829AUR/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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