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Microchip Technology 1N4620URE3
- Part No.:
- 1N4620URE3
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
1N4620URE3.pdf
- Description:
- ZENER DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:3,092
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Product details
Overview
1N4620URE3 from Microsemi is a 500 mW surface-mount Zener diode in DO-213AA (MELF) package, rated for 3.3 V ±5% Zener voltage at 250 mA test current, with 1650 Ω dynamic impedance, 3.5 µA max reverse leakage at 1.5 V, and -0.075 %/°C temperature coefficient. It delivers precision voltage regulation in high-reliability analog power supplies and reference circuits.
For engineers reviewing the 1N4620URE3 datasheet, 1N4620URE3 pinout, 1N4620URE3 application, or 1N4620URE3 equivalent, this part supports stable low-voltage regulation where hermetic sealing, low noise density (1 µV/√Hz), and MIL-PRF-19500/435 qualification up to JANS level are required.
Technical Context
This device operates as a two-terminal voltage reference in reverse breakdown, with metallurgically bonded construction ensuring mechanical robustness and thermal stability. Its DO-213AA glass MELF package provides hermetic sealing and minimal parasitic capacitance, critical for low-noise analog references.
The 1N4620URE3 exhibits a negative temperature coefficient of -0.075 %/°C and achieves 1 µV/√Hz noise density at its nominal Zener voltage - significantly lower than higher-voltage variants in the same family - making it suitable for sub-5 V precision biasing and feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 3.3 V ±5% at 250 mA - defines stable regulation point for low-voltage analog rails |
| Power Dissipation | 500 mW - supports continuous regulation under moderate load without external heatsinking |
| Dynamic Impedance ZZT | 1650 Ω - indicates voltage stability under small-signal AC ripple superimposed on DC bias |
| Reverse Leakage IR | 3.5 µA max at 1.5 V - ensures minimal quiescent current loss in battery-powered references |
| Noise Density | 1 µV/√Hz - enables use in low-noise instrumentation amplifier references and ADC voltage references |
| Temp. Coefficient αVZ | -0.075 %/°C - predictable drift behavior for temperature-compensated designs |
| Junction Temp. Range | -65 °C to +175 °C - supports operation in extended industrial and aerospace environments |
Pinout & Package
DO-213AA (SOD-80 / CDLL34) glass MELF package: hermetically sealed, cylindrical surface-mount form factor with axial symmetry; cathode indicated by single dark band; terminals are non-polarized metallized ends; RoHS-compliant matte-tin plating (e3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential node when used in standard Zener regulator configuration |
| Cathode (banded end) | Zener breakdown terminal / regulated output node | Provides stable 3.3 V reference relative to anode; must be held positive with respect to anode for regulation |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | Available up to JANS level - meets radiation-hardened, high-reliability requirements for space and defense systems |
| Metallurgical bond construction | Eliminates wire bonds and interfacial delamination risk - improves long-term reliability under thermal cycling |
| Low noise density | 1 µV/√Hz at 3.3 V - enables use in ultra-low-noise analog signal chains without additional filtering |
| Hermetic glass MELF package | DO-213AA form factor - provides moisture immunity and stable electrical parameters over lifetime |
| ESD insensitivity | Non-sensitive per MIL-STD-750 Method 1020 - eliminates need for handling precautions in production environments |
Applications
| Industrial Sensor Signal Conditioning | Aerospace Power Monitor Reference |
|---|---|
Use Scenario: Providing stable 3.3 V bias for op-amp input stages in RTD or strain-gauge front-ends operating across -40 °C to +125 °C. IC Role / Device Role / Timing Role: Precision shunt voltage reference establishing common-mode level and gain-setting node. Use Value: Low 1 µV/√Hz noise and -0.075 %/°C TC ensure <±0.5% total error over full temperature range without calibration. | Use Scenario: Regulating reference voltage for isolated DC-DC converter feedback in satellite power distribution units. IC Role / Device Role / Timing Role: Primary shunt reference in secondary-side error amplifier loop, exposed to radiation and thermal vacuum. Use Value: JANS qualification and inherent radiation hardness enable >100 krad(Si) tolerance without derating or shielding. |
| Medical Patient Monitor Analog Front-End | Automotive Engine Control Unit Bias Network |
Use Scenario: Generating clean 3.3 V reference for 24-bit delta-sigma ADCs measuring ECG/EEG signals in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise voltage reference source decoupled from noisy digital supply rails. Use Value: Hermetic DO-213AA package prevents parameter shift due to humidity ingress during sterilization cycles. | Use Scenario: Supplying regulated bias to knock sensor amplifiers and oxygen sensor heater controllers in under-hood ECUs. IC Role / Device Role / Timing Role: Stable shunt reference maintaining accuracy despite wide ambient swings (-40 °C to +150 °C). Use Value: 175 °C max junction temperature and linear derating allow uninterrupted operation at 150 °C board temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4620-1 | Same Zener voltage (3.3 V), identical DO-213AA package, but commercial-grade only (no MIL screening); RoHS compliant e3 optional | Lacks JAN/JANTX/JANS qualification; not suitable for defense/aerospace programs requiring traceable screening | Select when cost-sensitive industrial designs require same electrical performance without military reliability testing |
| 1N4620UR-1 | Identical electrical specs and DO-213AA package; differs only in RoHS compliance - lacks e3 suffix, indicating SnPb termination | Not RoHS compliant; restricted in EU medical/industrial products unless exempted | Select only for legacy repair, non-RoHS markets, or applications where lead-free solder compatibility is not required |
Compared with CDLL4620-1 and 1N4620UR-1, the 1N4620URE3 uniquely combines RoHS compliance (e3), MIL-PRF-19500/435 qualification up to JANS level, and verified 1 µV/√Hz noise performance - making it the sole choice for new high-reliability, environmentally compliant designs.
Availability
1N4620URE3 is available at Aetrix Electronics and suitable for industrial sensor conditioning, aerospace power monitoring, and medical analog front-end designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1N4620URE3 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 analog, RF, and radiation-hardened components for aerospace, defense, and industrial markets.
The 1N4620URE3 belongs to Microsemi's legacy MIL-qualified Zener diode family designed specifically for precision voltage regulation in mission-critical systems where hermeticity, noise performance, and extended temperature operation are mandatory.
FAQ
What is the Zener voltage tolerance for 1N4620URE3?
The 1N4620URE3 has a nominal Zener voltage of 3.3 V with a standard tolerance of ±5%, as defined in the JEDEC specification and confirmed in Microsemi's T4-LDS-0245 datasheet. This tolerance applies at 250 mA test current and 25 °C ambient temperature under thermal equilibrium conditions.
Is 1N4620URE3 RoHS compliant?
Yes, the "e3" suffix in 1N4620URE3 explicitly denotes RoHS compliance with annealed matte-tin plating, per Microsemi documentation. This version is qualified for commercial-grade use only; MIL-qualified versions (e.g., JANTXV 1N4620URE3) retain the e3 marking but require separate screening validation.
What package type does 1N4620URE3 use?
The 1N4620URE3 uses the DO-213AA (also known as SOD-80 or CDLL34) glass MELF package - a hermetically sealed, cylindrical surface-mount form factor with axial symmetry and cathode identification via a single dark band.
Does 1N4620URE3 have radiation hardness?
Yes, the 1N4620URE3 is inherently radiation hard as documented in Microsemi MicroNote 050. When screened to JANS level per MIL-PRF-19500/435, it meets total ionizing dose (TID) requirements exceeding 100 krad(Si), making it suitable for space-grade applications.
What is the maximum Zener current rating for 1N4620URE3?
The maximum Zener current (IZM) for 1N4620URE3 is 85.0 mA at 25 °C, derived from its 500 mW power rating and 3.3 V nominal Zener voltage. Current must be derated linearly above 125 °C case temperature, reaching zero at 175 °C, per Figure 2 in the datasheet.
1N4620URE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
1N4620URE3 FAQ
1.How can I place an order for 1N4620URE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4620URE3 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 1N4620URE3 reliable?
The price and inventory of 1N4620URE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4620URE3 is usually 5 days.
3.What payment methods are accepted for 1N4620URE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4620URE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4620URE3?
1N4620URE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4620URE3 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 1N4620URE3?
For technical support, including 1N4620URE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4620URE3 requirements.
6.How does Aetrix verify that 1N4620URE3 is sourced from the original manufacturer or authorized distributors?
All 1N4620URE3 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 1N4620URE3 meets industry standards.
7.What is the process for return or replacement of 1N4620URE3?
All 1N4620URE3 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4620URE3, 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 1N4620URE3 part is unused and in its original packaging.
Return procedure for 1N4620URE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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