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Microchip Technology 1N824/TR
- Part No.:
- 1N824/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N824/TR.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO204AH
- Quantity:
- Payment:
- Shipping:
Inventory:4,870
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Product details
Overview
1N824/TR from Central Semiconductor is a temperature-compensated, hermetically sealed MELF (DO-213AA) Zener diode with nominal zener voltage 5.9–6.5 V, 7.5 mA test current, 48 Ω zener impedance, ±0.005 %/°C temperature coefficient, and 500 mW power dissipation at +50°C. It serves as a precision voltage reference in analog power supply feedback loops and instrumentation front-ends.
For engineers reviewing the 1N824/TR datasheet, 1N824/TR pinout, 1N824/TR application, or 1N824/TR equivalent, key selection criteria include its low tempco, double-anode construction for bidirectional stability, DO-213AA package thermal performance, and MIL-PRF-19500/159 qualification path via related UR-1 variants.
Technical Context
This device uses metallurgically bonded, double-plug construction to achieve stable voltage regulation across -55°C to +100°C. Its double-anode configuration ensures identical electrical specifications under both forward and reverse bias polarities, enabling symmetrical clamping or dual-reference use cases.
The 48 Ω zener impedance at 7.5 mA and ±0.005 %/°C tempco are measured per JEDEC Std No. 5, with derating to 4 mW/°C above +50°C. Reverse leakage is specified at 2 µA @ 3 Vdc, supporting low-power standby regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 5.9–6.5 V @ 7.5 mA - tight tolerance band enables precise feedback setpoint in regulated DC-DC converters |
| Zener Impedance | 48 Ω @ 7.5 mA - low dynamic resistance maintains output voltage stability under load transients |
| Tempco | ±0.005 %/°C - ultra-low drift supports high-accuracy references in industrial sensor signal chains |
| Power Dissipation | 500 mW @ +50°C - sufficient headroom for continuous operation in compact surface-mount layouts |
| Package | DO-213AA (MELF, SOD-80) - hermetic glass seal ensures long-term reliability in harsh environments |
| Reverse Leakage | 2 µA @ 3 Vdc - minimal quiescent current preserves battery life in always-on monitoring circuits |
Pinout & Package
DO-213AA (MELF) glass package: cylindrical, leadless, axial symmetry; cathode identified by single black band; no discrete pins-terminals are axial leads with tin/lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink during reverse breakdown | Connected to lower-potential node in shunt regulator topology |
| Cathode (banded end) | Current source during reverse breakdown | Connected to regulated output node; polarity must be observed for correct biasing |
Key Features
| Feature | Design Value |
|---|---|
| Double-anode construction | Enables identical zener characteristics under either polarity-supports bidirectional transient suppression or dual-reference designs |
| Hermetic DO-213AA glass seal | Prevents moisture ingress and parametric shift over time-critical for aerospace and military-grade longevity |
| Metallurgically bonded junction | Reduces thermal resistance and improves long-term voltage stability under thermal cycling |
| MIL-PRF-19500/159 qualification path | Direct lineage to 1N824UR-1 variants allows drop-in qualification for defense programs requiring JAN/JANTXV screening |
Applications
| Industrial Power Supply Feedback | Aerospace Sensor Reference |
|---|---|
Use Scenario: Regulating output of isolated flyback converter in PLC power module. IC Role / Device Role / Timing Role: Shunt voltage reference providing error signal to optocoupler feedback circuit. Use Value: ±0.005 %/°C tempco ensures <±0.5% output drift over -40°C to +85°C ambient range. | Use Scenario: Stabilizing excitation voltage for strain-gauge bridge in flight control sensor. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric ADC measurement system. Use Value: Hermetic DO-213AA package prevents parameter drift in high-humidity, vibration-prone avionics bays. |
| Military Data Acquisition | Test Equipment Calibration |
Use Scenario: Biasing front-end op-amps in ruggedized field-deployable spectrum analyzer. IC Role / Device Role / Timing Role: Low-noise, low-drift reference for analog signal conditioning chain. Use Value: 48 Ω zener impedance minimizes noise coupling into high-gain amplifier stages. | Use Scenario: Setting calibration points in benchtop multimeter reference subsystem. IC Role / Device Role / Timing Role: Primary voltage standard traceable to NIST via MIL-spec qualified variants. Use Value: Double-anode symmetry allows verification of reference stability under reversed polarity stress tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N824UR-1 | MIL-PRF-19500/159 qualified; same electrical specs but screened to JANTXV level | Required for DoD procurement; includes extended temp testing and lot traceability | Select when program mandates MIL-spec compliance and full screening documentation |
| CDLL824 | Same die, DO-213AA package, identical electrical specs; commercial-grade variant | No MIL qualification; suitable for non-defense industrial use with same footprint | Select for cost-sensitive industrial designs where hermetic reliability is needed but MIL screening is not required |
Compared with 1N824/TR, the 1N824UR-1 adds military screening without altering electrical behavior, while CDLL824 offers identical performance at commercial-grade cost-both retain the DO-213AA thermal and mechanical advantages critical for high-stability reference design.
Availability
1N824/TR is available at Aetrix Electronics and suitable for industrial power supplies, aerospace sensor systems, and military data acquisition equipment requiring stable component supply and hermetic reliability.
Supply support for 1N824/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
Central Semiconductor Corp. is a U.S.-based manufacturer specializing in high-reliability discrete semiconductors, including Zener, Schottky, and switching diodes for demanding analog and power applications.
The 1N824/TR belongs to Central's temperature-compensated Zener family designed for precision voltage reference and regulation in mil-aero, industrial, and test equipment where long-term stability and hermetic packaging are mandatory.
FAQ
What is the zener voltage tolerance of the 1N824/TR?
The 1N824/TR has a zener voltage range of 5.9 V to 6.5 V at 7.5 mA test current. This ±5% nominal spread reflects the inherent process variation of the double-plug Zener structure. For tighter tolerance requirements, the 1N824UR-1 variant offers the same voltage range but with full MIL-PRF-19500/159 screening and lot-level characterization data for the 1N824/TR.
Is the 1N824/TR compatible with surface-mount reflow processes?
Yes, the 1N824/TR in DO-213AA (MELF) package is rated for standard SnPb and Pb-free reflow profiles. Its hermetic glass body withstands peak temperatures up to 260°C for 10 seconds. Mounting position is unrestricted, but thermal expansion matching with the PCB substrate is recommended per the stated +6 ppm/°C COE to avoid mechanical stress on the 1N824/TR.
Does the 1N824/TR support bidirectional operation?
Yes-the 1N824/TR features double-anode construction, meaning its zener voltage, impedance, and tempco specifications apply identically under both forward and reverse bias. This allows the 1N824/TR to function as a symmetrical clamp or dual-reference element without polarity constraints, unlike standard single-junction Zeners.
What is the maximum operating temperature for continuous use of the 1N824/TR?
The 1N824/TR is rated for continuous operation from -65°C to +175°C storage and operating temperature. However, power derating begins at +50°C: 500 mW maximum at +50°C, decreasing linearly by 4 mW/°C up to +175°C. At +125°C ambient, the 1N824/TR supports only 200 mW dissipation-designers must verify thermal margins in the final layout.
How does the 1N824/TR differ from the CDLL824 variant?
The 1N824/TR and CDLL824 share identical electrical specifications, DO-213AA packaging, and double-anode construction. The distinction lies in qualification: 1N824/TR is the commercial/trade version, while CDLL824 is Central's internal part number for the same die and assembly-both are interchangeable in non-MIL applications. Neither is a direct replacement for the screened 1N824UR-1 unless MIL compliance is waived.
1N824/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Reel (TR)
- 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:
- -65°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AH (DO-35)
1N824/TR FAQ
1.How can I place an order for 1N824/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N824/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 1N824/TR reliable?
The price and inventory of 1N824/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N824/TR is usually 5 days.
3.What payment methods are accepted for 1N824/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N824/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N824/TR?
1N824/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N824/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 1N824/TR?
For technical support, including 1N824/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N824/TR requirements.
6.How does Aetrix verify that 1N824/TR is sourced from the original manufacturer or authorized distributors?
All 1N824/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 1N824/TR meets industry standards.
7.What is the process for return or replacement of 1N824/TR?
All 1N824/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N824/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 1N824/TR part is unused and in its original packaging.
Return procedure for 1N824/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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