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Microchip Technology 1N4707UR-1/TR
- Part No.:
- 1N4707UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4707UR-1/TR.pdf
- Description:
- DIODE ZENER 20V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,373
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Product details
Overview
1N4707UR-1/TR from Microsemi is a 20.0 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD-80/MLL34) MELF package, tested at 50 µA Zener current, with 0.20 V voltage regulation and 0.01 µA reverse leakage at 15.2 V, used for precision voltage reference and low-power regulation in space-constrained analog circuits.
For engineers reviewing the 1N4707UR-1/TR datasheet, 1N4707UR-1/TR pinout, 1N4707UR-1/TR application, or 1N4707UR-1/TR equivalent, key selection factors include its hermetically sealed glass construction, metallurgically bonded die, minimal 0.04 g mass, RoHS-compliant matte-tin plating option, and MIL-PRF-19500 up-screening capability for high-reliability programs.
Technical Context
This Zener operates in reverse breakdown with a nominal 20.0 V regulation at 50 µA test current, exhibiting 0.20 V ∆VZ (voltage change between 10 µA and 100 µA), 15.2 V maximum Zener current limit (IZM), and 0.01 µA IR at VR = 15.2 V - confirming tight low-current stability ideal for battery-powered references.
Its DO-213AA package delivers 100 °C/W junction-to-end-cap thermal resistance when mounted per recommended FR4 footprint, enabling stable 500 mW dissipation below 125 °C end-cap temperature or 50 °C ambient - critical for thermally isolated sensor front-ends and power-supply feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.0 V at IZT = 50 µA - sets precise reference point for feedback networks and voltage clamping. |
| Tolerance | ±5% - ensures predictable regulation across production lots without calibration. |
| Power Dissipation | 500 mW - supports continuous operation in low-power analog rails and biasing circuits. |
| Reverse Leakage (IR) | 0.01 µA at 15.2 V - minimizes error current in high-impedance reference nodes. |
| Voltage Regulation (∆VZ) | 0.20 V (10–100 µA) - indicates low dynamic impedance for stable output under varying load. |
| Package | DO-213AA (SOD-80/MLL34) MELF - hermetic glass body with metallurgically bonded die for radiation hardness and long-term reliability. |
| Junction Temp Range | −65 to +175 °C - enables deployment in extended industrial and aerospace environments. |
Pinout & Package
DO-213AA (SOD-80/MLL34) MELF package: hermetically sealed cylindrical glass body with tin-lead or RoHS-compliant matte-tin plated end-cap terminals; cathode indicated by single black band - device operated with banded end positive for Zener regulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / Zener cathode return path | Connected to circuit ground or lower potential node during Zener operation. |
| Cathode (banded end) | Zener regulation terminal / reverse-bias anode | Connected to regulated voltage node; polarity marking essential for correct orientation in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass MELF construction | Eliminates moisture ingress and intermetallic degradation, ensuring >20-year shelf life and field reliability. |
| Metallurgical die bonding | Provides superior thermal transfer and mechanical stability vs. epoxy-bonded alternatives, reducing parameter drift over temperature cycles. |
| Low 50 µA test current | Enables accurate regulation in ultra-low-power systems (e.g., energy-harvesting sensors) where supply current is limited. |
| MIL-PRF-19500 up-screening option | Supports qualification for military/aerospace applications requiring burn-in, temperature cycling, and lot acceptance testing. |
| Non-ESD-sensitive design | Passes MIL-STD-750 Method 1020 without protection circuitry - simplifies board-level ESD design in mixed-signal systems. |
Applications
| Industrial Sensor Signal Conditioning | Space-Constrained Power Supply Feedback |
|---|---|
Use Scenario: Precision voltage reference for 16-bit ADC biasing in factory automation transmitters operating at −40 to +85 °C. IC Role / Device Role / Timing Role: Zener diode providing stable 20.0 V reference to op-amp gain-setting network and ADC reference buffer. Use Value: ±5% tolerance and 0.20 V ∆VZ ensure <0.1% full-scale error contribution across temperature and supply variation. |
Use Scenario: Secondary-side voltage sensing in isolated DC-DC converters for telecom base station control logic. IC Role / Device Role / Timing Role: Zener clamp regulating optocoupler LED current to maintain stable feedback loop gain. Use Value: 0.01 µA reverse leakage prevents loading of high-impedance feedback divider, preserving loop accuracy. |
| Aerospace Avionics Reference | Low-Power IoT Node Voltage Clamp |
Use Scenario: Backup reference source in flight-critical inertial measurement units requiring radiation-hardened components. IC Role / Device Role / Timing Role: Standby Zener regulator maintaining reference integrity during primary LDO fault conditions. Use Value: Inherent radiation hardness per MicroNote 050 and hermetic DO-213AA package enable operation in total ionizing dose >100 krad(Si). |
Use Scenario: Overvoltage protection for coin-cell-powered environmental sensors transmitting via BLE. IC Role / Device Role / Timing Role: Low-leakage Zener clamping microcontroller I/O pins against ESD and transient surges. Use Value: 0.04 g mass and MELF geometry allow placement directly at connector entry points without board area penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C20 (Vishay) | Same 20 V ±5%, but in DO-35 glass axial package; 100 µA IZT; higher 1.0 µA IR at 15.2 V. | Requires through-hole mounting and larger PCB area; less suitable for automated SMT assembly. | Select when legacy axial footprint compatibility or cost sensitivity outweighs SMT efficiency. |
| MMBZ5242B (ON Semiconductor) | SOT-23 package; 20 V ±5%; 20 µA IZT; 0.1 µA IR at 15 V; 350 mW rating. | Lower power rating and plastic package reduce thermal stability and long-term reliability vs. hermetic glass. | Choose only for non-critical consumer applications where size and cost dominate over lifetime performance. |
Compared with BZX55C20 and MMBZ5242B, the 1N4707UR-1/TR delivers superior thermal stability via DO-213AA's 100 °C/W RθJL, lower leakage for precision references, and hermetic reliability for mission-critical use - making it the preferred choice where regulation accuracy and field longevity are prioritized.
Availability
1N4707UR-1/TR is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, space-constrained power supply feedback, aerospace avionics reference, and low-power IoT node voltage clamp applications requiring stable component supply and long-lifecycle support.
Supply support for 1N4707UR-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) designs high-reliability analog and RF semiconductors for aerospace, defense, and industrial markets, emphasizing radiation hardness, hermetic packaging, and extended temperature operation.
The 1N4707UR-1/TR belongs to Microsemi's legacy DO-213AA Zener series engineered for precision voltage regulation in harsh-environment systems where long-term parametric stability and failure-free operation are mandatory.
FAQ
What is the Zener voltage tolerance of the 1N4707UR-1/TR?
The 1N4707UR-1/TR has a nominal Zener voltage of 20.0 V with a standard tolerance of ±5%, as confirmed in the Electrical Characteristics table on page 3 of T4-LDS-0240-1 Rev. 2. Tighter 2% and 1% tolerance variants exist under different part number suffixes (C and D), but the 1N4707UR-1/TR specifically uses the base 5% tolerance configuration.
Does the 1N4707UR-1/TR require external current limiting in typical applications?
Yes - the 1N4707UR-1/TR must be used with a series current-limiting resistor to restrict Zener current within its 15.2 mA maximum dc rating (IZM) and prevent exceeding 500 mW power dissipation. The resistor value is calculated using (VIN − 20.0 V)/IZ, where IZ is selected between 50 µA and 15.2 mA based on regulation stability and power budget requirements.
Is the 1N4707UR-1/TR RoHS compliant?
The 1N4707UR-1/TR is available in both RoHS-compliant (matte-tin plating, "e3" suffix) and non-RoHS versions; the TR suffix denotes tape-and-reel packaging but does not indicate RoHS status. RoHS compliance is explicitly marked in the part nomenclature - commercial-grade 1N4707UR-1/TR devices with "e3" designation meet RoHS Directive 2011/65/EU.
What is the thermal resistance of the 1N4707UR-1/TR when mounted on FR4?
When mounted on an FR4 PCB with 1 oz copper and the recommended footprint, the 1N4707UR-1/TR exhibits a junction-to-ambient thermal resistance (RθJA) of 250 °C/W and a lower junction-to-end-cap resistance (RθJL) of 100 °C/W. These values are specified in the Maximum Ratings table and define safe operating limits for continuous 500 mW dissipation below 50 °C ambient or 125 °C end-cap temperature.
Can the 1N4707UR-1/TR be used in high-reliability aerospace applications?
Yes - the 1N4707UR-1/TR supports MIL-PRF-19500 up-screening (detailed in the Features section), including burn-in, temperature cycling, and lot acceptance testing. Its hermetic DO-213AA package, metallurgical die bond, and inherent radiation hardness per MicroNote 050 make it suitable for flight-grade avionics where parameter stability and zero infant mortality are required.
1N4707UR-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):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 nA @ 15.2 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
1N4707UR-1/TR FAQ
1.How can I place an order for 1N4707UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4707UR-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 1N4707UR-1/TR reliable?
The price and inventory of 1N4707UR-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 1N4707UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4707UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4707UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4707UR-1/TR?
1N4707UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4707UR-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 1N4707UR-1/TR?
For technical support, including 1N4707UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4707UR-1/TR requirements.
6.How does Aetrix verify that 1N4707UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4707UR-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 1N4707UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4707UR-1/TR?
All 1N4707UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4707UR-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 1N4707UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4707UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4707UR-1/TR Tags
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