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Microchip Technology 1N828
- Part No.:
- 1N828
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N828.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:8,001
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Product details
Overview
1N828 from Microsemi is a temperature-compensated Zener reference diode in DO-35 glass axial-leaded package, delivering 6.2–6.9 V nominal zener voltage at 7.5 mA test current, with maximum zener impedance of 15 Ω and effective temperature coefficient of 0.001%/°C, used for precision voltage references in instrumentation and analog circuitry.
For engineers reviewing the 1N828 datasheet, 1N828 pinout, 1N828 application, or 1N828 equivalent, this device serves as a low-drift, hermetically sealed, MIL-qualified reference requiring minimal power (≤50 mW at 7.5 mA) and offering stable operation from –65°C to +175°C.
Technical Context
The 1N828 operates as a two-terminal, reverse-biased temperature-compensated Zener diode optimized for voltage reference stability across wide temperature extremes. Its design integrates internal metallurgical bonding (optional with "-1" suffix) and achieves 0.001%/°C effective temperature coefficient at 7.5 mA, minimizing ∆VZ to ≤10 mV over –55°C to +100°C.
It exhibits low dynamic impedance (15 Ω at IZT = 7.5 mA), reverse leakage ≤2.0 µA at 3 V, and typical capacitance ≤100 pF - enabling high-accuracy regulation in low-noise analog signal chains and military-grade power supply feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2–6.9 V at 7.5 mA - defines nominal reference level with ±5% tolerance band for calibration-critical circuits |
| Temperature Coefficient (αVZ) | 0.001%/°C - ensures <10 mV total drift over –55°C to +100°C, critical for aerospace and test equipment |
| Zener Impedance (ZZT) | 15 Ω at 7.5 mA - limits load-induced voltage shift to <11 mV per 0.75 mA AC ripple, supporting tight regulation |
| Reverse Leakage (IR) | ≤2.0 µA at 3 V - prevents reference error in high-impedance bias networks and battery-powered systems |
| Power Dissipation | 500 mW @ 25°C case temp - allows safe operation up to 70 mA IZM, but optimal stability at 7.5 mA (≤50 mW) |
| Operating Temp Range | –65°C to +175°C - supports deployment in downhole, avionics, and engine-control environments |
Pinout & Package
DO-35 (DO-204AH) hermetically sealed glass axial-leaded package with cathode band marking; polarity requires banded end to be positive relative to unmarked end during operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to circuit common; establishes reference potential baseline for feedback or measurement |
| Cathode | Reference output node | Provides stabilized Zener voltage; must be biased positive relative to anode to enable conduction |
Key Features
| Feature | Design Value |
|---|---|
| Temperature compensation | 0.001%/°C TC enables <10 mV total drift over –55°C to +100°C without external trimming |
| Hermetic DO-35 packaging | Sealed glass construction ensures long-term parameter stability and immunity to humidity-induced degradation |
| MIL-PRF-19500/159 qualification option | Available with "-1" suffix and JAN/JANTX prefixes for defense/aerospace applications requiring traceable reliability |
| Low capacitance | ≤100 pF supports high-frequency stability in fast-settling reference buffers and ADC reference drivers |
Applications
| High-Precision Instrumentation | Aerospace Power Monitoring |
|---|---|
Use Scenario: Digital multimeters and calibration standards requiring sub-10 ppm/°C reference stability over extended temperature cycles. IC Role / Device Role / Timing Role: Primary voltage reference for ADC/DAC reference inputs and op-amp biasing networks. Use Value: 0.001%/°C TC and ≤10 mV ∆VZ ensure measurement accuracy remains within ±0.01% over –55°C to +100°C. | Use Scenario: Onboard voltage telemetry in satellite power distribution units where radiation-hardened stability is mandatory. IC Role / Device Role / Timing Role: Reference element in isolated DC-DC converter feedback loops and bus voltage monitors. Use Value: Hermetic DO-35 package and –65°C to +175°C rating support operation in vacuum and thermal cycling environments. |
| Military Avionics Sensors | Downhole Oilfield Electronics |
Use Scenario: Pressure transducer signal conditioning modules in fighter jet flight control systems. IC Role / Device Role / Timing Role: Stable bias source for bridge amplifiers and ratiometric sensor excitation. Use Value: MIL-qualified variants (e.g., JANTX1N828-1) provide documented reliability and lot traceability per MIL-STD-883. | Use Scenario: Temperature-compensated pressure sensors deployed in oil/gas wellbores exceeding 150°C ambient. IC Role / Device Role / Timing Role: Reference generator for analog front-end circuits operating continuously at elevated temperatures. Use Value: Guaranteed operation to +175°C with <10 mV total ∆VZ eliminates need for active thermal compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N827 | Same DO-35 package; 5.9–6.5 V range; 0.001%/°C TC; 15 Ω ZZT; lower max ∆VZ (9 mV) | Slightly tighter voltage band and marginally better drift spec - preferred when 6.15 V center value is required | Select 1N827 if system calibration targets 6.15 V nominal with <9 mV total drift; otherwise 1N828 offers wider 6.2–6.9 V flexibility |
| 1N829 | Same DO-35 package; 5.9–6.5 V range; 0.0005%/°C TC; 15 Ω ZZT; 5 µA IR | Ultra-low TC variant for highest-stability applications; same voltage range but tighter drift budget | Choose 1N829 only when <5 mV ∆VZ over –55°C to +100°C is mandatory; 1N828 balances cost and performance for most industrial designs |
Compared with 1N827 and 1N829, the 1N828 provides a balanced trade-off: wider 6.2–6.9 V zener range than 1N827's 5.9–6.5 V, higher TC than 1N829's 0.0005%/°C, yet retains identical 15 Ω impedance and DO-35 form factor - making it ideal for general-purpose high-reliability reference use.
Availability
1N828 is available at Aetrix Electronics and suitable for high-reliability instrumentation, aerospace power monitoring, and downhole electronics requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 1N828 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 1N82x series belongs to Microsemi's legacy precision Zener reference diode product line, engineered specifically for applications demanding ultra-low temperature drift, hermetic packaging, and MIL-qualified reliability in extreme environments.
FAQ
What is the nominal zener voltage range of the 1N828?
The 1N828 has a nominal zener voltage range of 6.2 V to 6.9 V at 7.5 mA test current, per Microsemi's REV C datasheet. This range reflects its ±5% tolerance around a 6.15 V center value and distinguishes it from adjacent variants like 1N827 (5.9–6.5 V). The 1N828 is not a fixed 6.2 V or 6.55 V part - its specified band accommodates manufacturing spread while maintaining low-TC performance.
Does the 1N828 require external temperature compensation?
No, the 1N828 does not require external temperature compensation. It is a monolithic temperature-compensated Zener reference diode with an effective temperature coefficient of 0.001%/°C, achieving <10 mV total voltage change over –55°C to +100°C. This intrinsic compensation is built into the die structure, eliminating need for thermistors or op-amp correction networks in the 1N828 application.
What is the maximum power dissipation rating for the 1N828?
The 1N828 has a maximum DC power dissipation of 500 mW at 25°C lead temperature (TL), with a maximum zener current (IZM) of 70 mA. However, Microsemi specifies optimum voltage-temperature stability at 7.5 mA, where dissipated power is under 50 mW. Exceeding 7.5 mA increases self-heating and degrades the 0.001%/°C TC performance of the 1N828.
Is the 1N828 available in military-grade qualification?
Yes, the 1N828 is available in military-grade qualification when ordered with the "-1" suffix (e.g., 1N828-1) and appropriate prefixes such as JANTX or JANTXV, meeting MIL-PRF-19500/159 requirements. These variants include internal metallurgical bonding and full traceability, making them suitable for defense and aerospace programs where reliability documentation is mandatory for the 1N828 application.
What package type does the 1N828 use, and how is polarity identified?
The 1N828 uses the DO-35 (DO-204AH) hermetically sealed glass axial-leaded package. Polarity is identified by a cathode band - the banded end must be held positive relative to the unmarked (anode) end during operation. This marking convention is consistent across the 1N821–1N829A series and is critical for correct biasing of the 1N828 in reference circuits.
1N828 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N828 FAQ
1.How can I place an order for 1N828 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N828 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 1N828 reliable?
The price and inventory of 1N828 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N828 is usually 5 days.
3.What payment methods are accepted for 1N828?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N828 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N828?
1N828 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N828 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 1N828?
For technical support, including 1N828 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N828 requirements.
6.How does Aetrix verify that 1N828 is sourced from the original manufacturer or authorized distributors?
All 1N828 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 1N828 meets industry standards.
7.What is the process for return or replacement of 1N828?
All 1N828 units undergo pre-shipment inspection (PSI). If there is an issue with 1N828, 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 1N828 part is unused and in its original packaging.
Return procedure for 1N828:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N828 Tags
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