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Microchip Technology 1N4717UR-1/TR
- Part No.:
- 1N4717UR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4717UR-1/TR.pdf
- Description:
- DIODE ZENER 43V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,528
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Product details
Overview
1N4717UR-1/TR from Microsemi is a 43 V, ±5% tolerance, 500 mW surface-mount Zener diode in DO-213AA (SOD80/MLL34) MELF package, tested at 50 µA Zener current, with 0.43 V voltage regulation and 11.0 mA maximum Zener current. It delivers stable voltage reference in precision power supply feedback loops and overvoltage protection circuits.
For engineers reviewing the 1N4717UR-1/TR datasheet, 1N4717UR-1/TR pinout, 1N4717UR-1/TR application, or 1N4717UR-1/TR equivalent, key selection factors include its hermetically sealed glass construction, low leakage (<0.01 µA at VR = 32.6 V), radiation-hardened design per MicroNote 050, and MIL-PRF-19500 up-screening capability for high-reliability programs.
Technical Context
This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 43.0 V at 50 µA test current, exhibiting 0.43 V regulation change between 10 µA and 100 µA. Its DO-213AA glass MELF package uses metallurgically bonded metal end caps for thermal and mechanical reliability.
Designed for operation across –65 °C to +175 °C junction temperature, it achieves 100 °C/W junction-to-end-cap thermal resistance on FR4 board and supports solder reflow up to 260 °C for 10 seconds. Reverse leakage remains ≤0.01 µA at 32.6 V, enabling low-power biasing in sensor interfaces and reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 43.0 V at IZT = 50 µA - precise regulation point for high-voltage reference applications |
| Power Dissipation (PD) | 0.5 W - supports continuous operation in compact SMT designs without forced cooling |
| Voltage Regulation (∆VZ) | 0.43 V - variation between 10 µA and 100 µA, indicating stable knee behavior for low-current sensing |
| Max Zener Current (IZM) | 11.0 mA - maximum safe DC current at TEC < 125 °C or TA < 50 °C |
| Reverse Leakage (IR) | ≤0.01 µA at VR = 32.6 V - enables ultra-low standby current in battery-backed systems |
| Junction Temp Range | –65 °C to +175 °C - qualified for aerospace, downhole, and industrial environments |
| Package | DO-213AA (SOD80/MLL34) - hermetically sealed glass MELF with tin-lead or RoHS matte-tin plating |
Pinout & Package
DO-213AA (SOD80/MLL34) is a cylindrical glass MELF package with two metallized end caps. Cathode is marked by a band; device operates with banded end positive in Zener mode. End caps serve as anode and cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Banded End | Cathode | Connected to regulated output node; must be held at higher potential than anode for Zener conduction |
| Non-Banded End | Anode | Connected to circuit ground or lower-potential rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass Construction | Eliminates moisture ingress and long-term parameter drift in harsh environments |
| Metallurgical Die Bonding | Enhances thermal cycling endurance and power handling stability vs. epoxy-bonded alternatives |
| MIL-PRF-19500 Up-Screening Option | Enables qualification for military/aerospace programs requiring extended reliability testing |
| Radiation Hardness | Inherently resistant to total ionizing dose (TID), validated per MicroNote 050 for space-grade use |
| Low Capacitance | Typical <1.0 pF - preserves signal integrity in RF bias and high-speed clamping applications |
Applications
| Power Supply Feedback Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in isolated flyback converter feedback networks to regulate output voltage via optocoupler-coupled error amplifier. IC Role / Device Role / Timing Role: Zener diode provides precise 43 V reference threshold for TL431-type shunt regulators or discrete error amplifiers. Use Value: Tight 43.0 V ±5% tolerance and low ∆VZ ensure stable regulation across line/load transients and temperature extremes. | Use Scenario: Placed across DC bus rails in motor drives to clamp transient spikes exceeding 43 V. IC Role / Device Role / Timing Role: Acts as passive crowbar element that conducts only above breakdown, limiting voltage stress on downstream MOSFETs and controllers. Use Value: Low leakage (<0.01 µA) prevents unnecessary power loss during normal operation; hermetic seal ensures reliability under repeated surge events. |
| Sensor Biasing Circuit | High-Temperature Reference Source |
Use Scenario: Supplies stable bias current to RTD or thermistor bridges in industrial process monitoring systems. IC Role / Device Role / Timing Role: Functions as constant-current source when series-resistor biased, leveraging sharp Zener knee at 50 µA. Use Value: Minimal capacitance (<1 pF) avoids phase shift in analog front-end filtering; radiation hardness supports nuclear facility instrumentation. | Use Scenario: Provides voltage reference in downhole oil/gas logging tools operating continuously at 175 °C ambient. IC Role / Device Role / Timing Role: Serves as primary reference in analog-to-digital conversion chains where external references fail. Use Value: Guaranteed operation to +175 °C junction temperature and metallurgical bonding prevent delamination 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 |
|---|---|---|---|
| 1N4717A | Same 43 V rating but in DO-41 axial package; no hermetic seal; 1000 mW rating | Not suitable for surface-mount production or high-reliability sealed environments | Select 1N4717UR-1/TR for automated SMT assembly, hermetic sealing, or extended temperature operation |
| BZX84-C43 | SOT-23 package; 43 V ±5%; 300 mW rating; typical leakage 0.1 µA at 32.6 V | Higher leakage and lower power limit reduce suitability for precision reference or high-temp use | Choose 1N4717UR-1/TR when low leakage, radiation hardness, or MIL-qualified screening is required |
Compared with 1N4717A and BZX84-C43, the 1N4717UR-1/TR offers superior thermal stability, hermetic reliability, and radiation tolerance-critical for aerospace, energy, and defense applications where long-term parametric drift or single-event effects must be minimized.
Availability
1N4717UR-1/TR is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, and high-temperature sensor biasing applications requiring stable component supply across extended product lifecycles.
Supply support for 1N4717UR-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) specialized in high-reliability analog and mixed-signal semiconductors for aerospace, defense, and industrial markets.
The 1N4678UR-1 through 1N4717UR-1 series was engineered as a surface-mount, hermetically sealed replacement for legacy JEDEC 1N46xx/1N47xx axial Zeners-targeting programs needing MIL-PRF-19500 compliance, radiation tolerance, and extended temperature operation.
FAQ
What is the Zener voltage tolerance for 1N4717UR-1/TR?
The 1N4717UR-1/TR has a nominal Zener voltage of 43.0 V with a standard tolerance of ±5%, as specified in the Electrical Characteristics table on page 3 of T4-LDS-0240-1 Rev. 2. Tighter 2% and 1% tolerances are available under different part number suffixes (C and D), but the TR-suffixed commercial version defaults to ±5%.
Is 1N4717UR-1/TR RoHS compliant?
Yes, the 1N4717UR-1/TR is RoHS compliant (e3 marking), with matte-tin plating on its end caps. RoHS compliance applies only to the commercial-grade version; up-screened variants (e.g., JAN, JANTX) are non-RoHS due to tin-lead plating requirements for MIL-PRF-19500 testing.
What is the maximum reverse leakage current for 1N4717UR-1/TR?
The maximum reverse leakage current for 1N4717UR-1/TR is 0.01 µA at VR = 32.6 V, per the Electrical Characteristics table. This ultra-low leakage supports energy-efficient biasing in battery-powered instrumentation and low-power sensor interfaces.
Can 1N4717UR-1/TR be used in high-temperature environments?
Yes, the 1N4717UR-1/TR is rated for junction temperatures from –65 °C to +175 °C. Its metallurgically bonded die and hermetic glass package enable reliable operation in downhole, aerospace, and industrial control applications where sustained high-temperature exposure is expected.
What does the "TR" suffix mean in 1N4717UR-1/TR?
The "TR" suffix indicates tape-and-reel packaging per EIA-481-1-B standard, enabling automated pick-and-place assembly. The base part 1N4717UR-1 denotes the DO-213AA MELF package with metallurgical bonding and UR-series screening; "TR" adds logistics compatibility without altering electrical or mechanical specifications.
1N4717UR-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):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 nA @ 32.6 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
1N4717UR-1/TR FAQ
1.How can I place an order for 1N4717UR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4717UR-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 1N4717UR-1/TR reliable?
The price and inventory of 1N4717UR-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 1N4717UR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4717UR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4717UR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4717UR-1/TR?
1N4717UR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4717UR-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 1N4717UR-1/TR?
For technical support, including 1N4717UR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4717UR-1/TR requirements.
6.How does Aetrix verify that 1N4717UR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4717UR-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 1N4717UR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4717UR-1/TR?
All 1N4717UR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4717UR-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 1N4717UR-1/TR part is unused and in its original packaging.
Return procedure for 1N4717UR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4717UR-1/TR Tags
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BZT52C5V6T-7
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MMSZ5231B-7-F
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BZX84C3V3LT1G
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MMSZ4682T1G
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MM5Z5V1ST1G
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