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Microchip Technology 1N4627UR-1
- Part No.:
- 1N4627UR-1
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4627UR-1.pdf
- Description:
- DIODE ZENER 6.2V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,336
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Product details
Overview
1N4627UR-1 from Microsemi is a 500 mW, 6.2 V Zener voltage regulator diode in the hermetically sealed glass DO-213AA (SOD80) MELF surface-mount package, qualified to JANS level per MIL-PRF-19500/435, with 1% voltage tolerance, 5 Ω dynamic impedance at 250 mA test current, and max noise density of 5 µV/√Hz - used for precision voltage reference and regulation in radiation-hardened aerospace power supplies.
For engineers reviewing the 1N4627UR-1 datasheet, 1N4627UR-1 pinout, 1N4627UR-1 application, or 1N4627UR-1 equivalent, this part supports high-reliability voltage stabilization across wide temperature ranges (-65 °C to +175 °C), offers low capacitance (<1 pF typical), and meets stringent ESD immunity (MIL-STD-750 Method 1020) and radiation hardness requirements.
Technical Context
The 1N4627UR-1 operates as a reverse-biased Zener diode with precise breakdown at 6.2 V ±1% under 250 mA test current (IZT), exhibiting a temperature coefficient of -0.010 to +0.050 %/°C. Its metallurgically bonded construction ensures stable regulation over thermal cycling and mechanical stress.
It delivers 500 mW average power dissipation with linear derating to zero at 175 °C junction temperature, and features ultra-low reverse leakage (IR ≤ 5.0 µA at VR = 5.0 V), enabling use in low-power biasing and reference circuits where stability under varying load and temperature is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 6.2 V ±1% at IZT = 250 mA - enables accurate voltage clamping in precision analog references. |
| Power Dissipation | 500 mW at TC = 25 °C, derates linearly to zero at 175 °C - supports operation in high-temp environments without external heatsinking. |
| Dynamic Impedance ZZT | 1200 Ω max at IZT = 250 mA - ensures minimal output voltage variation under changing load current. |
| Noise Density ND | 5 µV/√Hz max at IZT = 250 mA - critical for low-noise voltage references in instrumentation and ADC biasing. |
| Reverse Leakage IR | ≤5.0 µA at VR = 5.0 V - guarantees tight regulation margin below breakdown threshold. |
| Temp Coefficient αVZ | -0.010 to +0.050 %/°C - allows predictable drift compensation in temperature-critical designs. |
| Junction Temp Range | -65 °C to +175 °C - validated for extended-range military and space-grade applications. |
Pinout & Package
Package: Hermetically sealed glass DO-213AA (SOD80 / CDLL34) MELF surface-mount case. Cathode indicated by single banded end; device operated with banded end positive relative to opposite end for Zener regulation. Tin-lead or RoHS-compliant matte-tin plating; solderable per MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; defines reference point for regulated output. |
| Cathode | Zener breakdown terminal / regulated voltage output | Banded end; supplies stable 6.2 V when reverse-biased; requires current-limiting resistor in series. |
Key Features
| Feature | Design Value |
|---|---|
| MIL-PRF-19500/435 qualification | Qualified to JANS level - certified for mission-critical aerospace and defense systems requiring full lot traceability and screening. |
| Metallurgical bond construction | Eliminates wire bonds and interfacial delamination - ensures long-term reliability under thermal shock and vibration. |
| Low noise density | 5 µV/√Hz max at 6.2 V - reduces voltage reference jitter in high-resolution data acquisition systems. |
| Hermetic glass sealing | Prevents moisture ingress and parameter drift - maintains Zener voltage stability over 20+ years in harsh environments. |
| Radiation hardness | Inherently radiation-tolerant per Microsemi MicroNote 050 - suitable for satellite power regulation without shielding overhead. |
Applications
| Aerospace Power Reference | Satellite Voltage Monitor |
|---|---|
Use Scenario: Providing stable 6.2 V reference for ADCs and DACs in onboard telemetry units operating in LEO orbit. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference source for analog signal conditioning chain. Use Value: Radiation-hardened behavior and -65 °C to +175 °C operation eliminate need for redundant references or thermal compensation circuitry. | Use Scenario: Monitoring bus voltage integrity in solar array regulators exposed to total ionizing dose >100 krad(Si). IC Role / Device Role / Timing Role: Precision shunt regulator detecting overvoltage events via comparator input tied to cathode node. Use Value: 1% tolerance and <5 µA leakage ensure detection thresholds remain within ±0.5% over lifetime without recalibration. |
| High-Reliability Test Equipment | Nuclear Instrumentation Bias Supply |
Use Scenario: Calibrating multimeter front-end references in metrology labs requiring NIST-traceable stability. IC Role / Device Role / Timing Role: Primary shunt reference in oven-controlled voltage standard subsystem. Use Value: Low 5 µV/√Hz noise and <1200 Ω dynamic impedance minimize measurement uncertainty in 7½-digit DMMs. | Use Scenario: Biasing photomultiplier tube anodes in reactor monitoring detectors operating at 125 °C ambient. IC Role / Device Role / Timing Role: Temperature-stable Zener element setting gain in high-voltage divider networks. Use Value: -0.010 to +0.050 %/°C tempco and 175 °C max junction rating enable direct mounting on detector housings without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4627-1 | Commercial-grade version; same 6.2 V ±1%, DO-213AA package, but not MIL-qualified. | Lacks JAN/JANS screening; unsuitable for flight hardware or safety-critical systems. | Select when cost-sensitive industrial designs require identical electrical specs without military certification. |
| 1N4627TR | Tape-and-reel packaging variant (EIA-481-1-A, 12 mm tape); identical electrical and thermal specs. | Optimized for automated SMT assembly; no functional or performance difference. | Select for high-volume production requiring pick-and-place compatibility and reel logistics. |
Compared with 1N4627UR-1, CDLL4627-1 offers identical regulation performance at lower cost but lacks radiation hardness and MIL-qualification, while 1N4627TR provides identical functionality in tape-and-reel format - making it ideal for automated manufacturing without design change.
Availability
1N4627UR-1 is available at Aetrix Electronics and suitable for aerospace power reference, satellite voltage monitor, and high-reliability test equipment requiring stable component supply with full traceability and long-lifecycle support.
Supply support for 1N4627UR-1 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 1N4627UR-1 belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, engineered for precision voltage regulation in extreme-environment electronics where failure is not an option.
FAQ
What is the Zener voltage tolerance of the 1N4627UR-1?
The 1N4627UR-1 has a nominal Zener voltage of 6.2 V with a tolerance of ±1%, denoted by the "D" suffix in its nomenclature per Microsemi's part numbering system. This tight tolerance is achieved through post-package sorting and verified during MIL-PRF-19500/435 screening, ensuring consistent regulation across production lots used in flight-critical systems.
Is the 1N4627UR-1 suitable for high-temperature environments?
Yes, the 1N4627UR-1 is rated for junction temperatures from -65 °C to +175 °C and features linear power derating from 500 mW at 25 °C to zero at 175 °C. Its metallurgically bonded DO-213AA glass package and internal construction maintain parametric stability under sustained thermal stress, making it appropriate for downhole, avionics, and engine-control applications.
Does the 1N4627UR-1 meet RoHS requirements?
No - the 1N4627UR-1 is a non-RoHS compliant part, as indicated by the absence of the "e3" suffix. RoHS-compliant versions are only available in commercial-grade variants (e.g., CDLL4627-1e3) and are not qualified to JAN/JANS levels. The 1N4627UR-1 uses tin-lead plating per MIL-STD-750 and is intended for legacy and high-reliability programs where leaded finishes are mandated.
What is the maximum reverse leakage current for the 1N4627UR-1?
The 1N4627UR-1 specifies a maximum reverse leakage current (IR) of 5.0 µA at VR = 5.0 V, measured at 25 °C. This low leakage ensures minimal error contribution in precision reference circuits and supports reliable turn-on behavior near the Zener knee, especially important in low-current biasing applications like op-amp feedback networks.
How does the noise performance of the 1N4627UR-1 compare to other Zener diodes?
The 1N4627UR-1 exhibits a maximum noise density of 5 µV/√Hz at 250 mA test current - significantly lower than standard 6.2 V Zeners (typically >10 µV/√Hz). This performance stems from Microsemi's metallurgical bonding and optimized junction design, making the 1N4627UR-1 preferred for low-jitter clock references and high-resolution analog-to-digital conversion where noise directly impacts effective resolution.
1N4627UR-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-213AA
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1200 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4627UR-1 FAQ
1.How can I place an order for 1N4627UR-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4627UR-1 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 1N4627UR-1 reliable?
The price and inventory of 1N4627UR-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4627UR-1 is usually 5 days.
3.What payment methods are accepted for 1N4627UR-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4627UR-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4627UR-1?
1N4627UR-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4627UR-1 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 1N4627UR-1?
For technical support, including 1N4627UR-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4627UR-1 requirements.
6.How does Aetrix verify that 1N4627UR-1 is sourced from the original manufacturer or authorized distributors?
All 1N4627UR-1 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 1N4627UR-1 meets industry standards.
7.What is the process for return or replacement of 1N4627UR-1?
All 1N4627UR-1 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4627UR-1, 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 1N4627UR-1 part is unused and in its original packaging.
Return procedure for 1N4627UR-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4627UR-1 Tags
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