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Microchip Technology 1N4683UR-1/TR
- Part No.:
- 1N4683UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4683UR-1/TR.pdf
- Description:
- DIODE ZENER 3V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,277
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Product details
Overview
1N4683UR-1/TR from Microsemi is a 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF package, rated for 3.0 V nominal Zener voltage at 50 µA test current, ±5% tolerance, with 0.90 V regulation variation and 0.8 µA reverse leakage at 1.0 V. It delivers stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the 1N4683UR-1/TR datasheet, 1N4683UR-1/TR pinout, 1N4683UR-1/TR application, or 1N4683UR-1/TR equivalent, key selection criteria include low-test-current operation (50 µA), hermetic glass packaging, MIL-PRF-19500 up-screening capability, minimal capacitance, and radiation-hardened construction per MicroNote 050.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 3.0 V reference across a broad temperature range (–65 °C to +175 °C) and wide current range (50 µA to 170 mA). Its metallurgically bonded silicon die and hermetically sealed glass DO-213AA package ensure high reliability under thermal cycling and harsh environments.
The device exhibits low dynamic impedance due to tight regulation (ΔVZ = 0.90 V between 10 µA and 100 µA), minimal junction capacitance (typical <1.5 pF at 0 V), and non-sensitivity to ESD per MIL-STD-750 Method 1020 - enabling use in precision biasing and low-noise sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V at IZT = 50 µA - defines precise regulation point for low-current reference applications |
| Power Dissipation (PD) | 500 mW - supports continuous operation up to 170 mA Zener current at TEC ≤ 125 °C |
| Regulation Variation (ΔVZ) | 0.90 V - quantifies voltage shift between 10 µA and 100 µA, indicating low dynamic impedance |
| Reverse Leakage (IR) | 0.8 µA at VR = 1.0 V - ensures minimal error contribution in high-impedance bias networks |
| Thermal Resistance (RθJA) | 250 °C/W - determines junction temperature rise on FR4 board with standard footprint |
| Junction Temperature Range | –65 °C to +175 °C - enables deployment in aerospace, downhole, and industrial control systems |
| Package Type | DO-213AA (SOD80/MLL34) - hermetically sealed MELF glass package with end-cap terminations |
Pinout & Package
DO-213AA (SOD80/MLL34) is a cylindrical MELF-style hermetically sealed glass package with two metallized end caps serving as anode and cathode terminals. Polarity is marked by a single band indicating the cathode end, which must be held positive relative to the anode during Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Zener regulation terminal | Connected to higher potential node; reverse-biased to conduct and clamp voltage at VZ |
| Anode (unbanded end) | Reference return terminal | Connected to circuit ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and long-term parameter drift in humid or corrosive environments |
| Metallurgical die bonding | Ensures mechanical stability and thermal continuity between silicon and end caps for reliable power handling |
| Low 50 µA Zener test current | Enables ultra-low-power biasing in battery-operated sensors and standby circuits |
| MIL-PRF-19500 up-screening option | Supports qualification for military/aerospace programs requiring extended reliability screening |
| Radiation hardness (per MicroNote 050) | Validated performance in total ionizing dose (TID) environments up to 100 krad(Si) |
Applications
| Temperature Sensor Biasing | Low-Power Reference Supply |
|---|---|
Use Scenario: Providing stable excitation current to platinum RTD elements in industrial process transmitters. IC Role / Device Role / Timing Role: Zener voltage reference establishing fixed bias point for ratiometric measurement circuitry. Use Value: Maintains 3.0 V reference with <0.90 V regulation shift over 10–100 µA, minimizing gain error in analog front-end amplifiers. | Use Scenario: Generating local 3.0 V reference for microcontroller ADCs and comparators in portable medical devices. IC Role / Device Role / Timing Role: Low-current Zener regulator supplying precision reference without loading primary LDO output. Use Value: Draws only 50 µA test current and exhibits <0.8 µA leakage at 1.0 V, preserving battery life while ensuring <1% voltage accuracy. |
| Aerospace Power Sequencing | High-Reliability Signal Conditioning |
Use Scenario: Enabling controlled power-up sequencing of avionics subsystems via voltage-threshold detection. IC Role / Device Role / Timing Role: Zener-based threshold detector triggering enable signals when input rail exceeds 3.0 V. Use Value: Hermetic DO-213AA package and radiation-hardened design ensure consistent trip point across launch vibration and space radiation exposure. | Use Scenario: Stabilizing op-amp bias points in seismic data acquisition front-ends operating in extreme temperature gradients. IC Role / Device Role / Timing Role: Precision shunt reference maintaining stable common-mode voltage in differential signal chains. Use Value: –65 °C to +175 °C operating range and <250 °C/W thermal resistance prevent thermal runaway or offset drift under thermal shock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4683US-1/TR | Same electrical specs but in plastic SOD-123 package; no hermetic seal; RθJA = 300 °C/W | Limited to commercial-grade industrial use; unsuitable for high-reliability or radiation-exposed environments | Select when cost and PCB assembly compatibility outweigh hermeticity and radiation requirements |
| BZX55C3V0 | 3.0 V, ±5%, 500 mW, DO-35 package; higher leakage (5 µA @ 1 V); not MIL-qualified | General-purpose replacement where up-screening and low-leakage are not required | Choose for legacy through-hole designs or cost-sensitive consumer applications |
Compared with 1N4683UR-1/TR, the 1N4683US-1/TR sacrifices hermeticity and thermal performance for SMT compatibility, while BZX55C3V0 offers broader availability but lacks radiation hardness, low-leakage, and MIL-PRF-19500 screening - making 1N4683UR-1/TR uniquely suited for mission-critical analog references.
Availability
1N4683UR-1/TR is available at Aetrix Electronics and suitable for aerospace power sequencing, industrial temperature sensor biasing, low-power reference supplies, and high-reliability signal conditioning requiring stable component supply across extended temperature and radiation environments.
Supply support for 1N4683UR-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 Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability, radiation-hardened, and aerospace-grade components.
The 1N4683UR-1/TR belongs to Microsemi's legacy DO-213AA Zener series designed specifically for applications demanding hermetic sealing, low-test-current operation, and qualification to MIL-PRF-19500 standards.
FAQ
What is the Zener voltage tolerance for 1N4683UR-1/TR?
The 1N4683UR-1/TR has a nominal Zener voltage of 3.0 V with a standard tolerance of ±5%. Tighter tolerances of ±2% and ±1% are available under different part number suffixes (e.g., "C" or "D"), but the base 1N4683UR-1/TR variant is specified at ±5% per the Electrical Characteristics table on page 3 of T4-LDS-0240-1 Rev. 2.
Does 1N4683UR-1/TR require a heatsink for 500 mW operation?
No, the 1N4683UR-1/TR does not require an external heatsink when operated within its derating curve limits. At ambient temperatures below 50 °C on FR4 board, it safely dissipates 500 mW; above that, power must be reduced per the derating curve in Figure 1. Its RθJA of 250 °C/W reflects thermal performance with the recommended footprint - no additional thermal mass is needed for typical use cases.
Is 1N4683UR-1/TR RoHS compliant?
Yes, the 1N4683UR-1/TR is available in RoHS-compliant versions marked with the "e3" suffix (e.g., 1N4683UR-1/TR e3), featuring matte-tin plating on end caps. RoHS compliance applies only to commercial-grade units; up-screened versions (e.g., JAN/MIL-qualified) retain tin-lead plating per specification requirements.
What is the maximum reverse leakage current for 1N4683UR-1/TR at 1.0 V?
The maximum reverse leakage current (IR) for 1N4683UR-1/TR is 0.8 µA at VR = 1.0 V and TA = 25 °C, as specified in the Electrical Characteristics table on page 3. This low leakage supports high-impedance bias networks and minimizes error in precision analog circuits using the 1N4683UR-1/TR as a reference element.
Can 1N4683UR-1/TR be used in radiation-intensive environments?
Yes, the 1N4683UR-1/TR is inherently radiation-hardened per Microsemi's MicroNote 050, validated for total ionizing dose (TID) tolerance up to 100 krad(Si). Its hermetic DO-213AA package and metallurgically bonded construction contribute to this performance, making the 1N4683UR-1/TR suitable for satellite, nuclear instrumentation, and high-altitude avionics applications.
1N4683UR-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):
- 3 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 800 nA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 100 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4683UR-1/TR FAQ
1.How can I place an order for 1N4683UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4683UR-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 1N4683UR-1/TR reliable?
The price and inventory of 1N4683UR-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 1N4683UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4683UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4683UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4683UR-1/TR?
1N4683UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4683UR-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 1N4683UR-1/TR?
For technical support, including 1N4683UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4683UR-1/TR requirements.
6.How does Aetrix verify that 1N4683UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4683UR-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 1N4683UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4683UR-1/TR?
All 1N4683UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4683UR-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 1N4683UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4683UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4683UR-1/TR Tags
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