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Microchip Technology 1N4625DUR-1/TR
- Part No.:
- 1N4625DUR-1/TR
- Manufacturer:
- Microchip Technology
- Category:
- Single Zener Diodes
- Package:
- DO-213AA
- Datasheet:
-
1N4625DUR-1/TR.pdf
- Description:
- DIODE ZENER 5.1V 500MW DO213AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,122
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Product details
Overview
1N4625DUR-1/TR from Microsemi is a 5.1 V, 1% tolerance, 500 mW surface-mount Zener diode in DO-213AA (MELF) glass package, metallurgically bonded for high-reliability voltage regulation in precision reference and power-supply feedback circuits across military, aerospace, and industrial systems.
For engineers reviewing the 1N4625DUR-1/TR datasheet, 1N4625DUR-1/TR pinout, 1N4625DUR-1/TR application, or 1N4625DUR-1/TR equivalent, this part delivers low-noise (3.0 µV/√Hz), stable temperature coefficient (−0.045/+0.030 %/°C), and JANS-qualified reliability - critical for analog sensing, voltage clamping, and regulated biasing where long-term drift and radiation hardness matter.
Technical Context
This Zener diode operates in reverse breakdown with a nominal test current of 250 mA and exhibits dynamic impedance of 1500 Ω at IZT, enabling tight regulation under varying load conditions. Its hermetically sealed glass DO-213AA package ensures minimal capacitance (typical <2 pF) and ESD immunity per MIL-STD-750 Method 1020.
The device features a metallurgical bond construction that supports operation from −65 °C to +175 °C junction temperature and inherent radiation hardness per Microsemi MicroNote 050. Noise density is specified at 3.0 µV/√Hz - measured at 1–3 kHz bandwidth with 250 mA DC bias - making it suitable for low-noise reference applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 5.1 V ±1% at 250 mA - enables precise voltage reference generation with minimal calibration overhead |
| Power Dissipation | 500 mW at 25 °C, derating linearly to zero at 175 °C - supports compact thermal design on FR4 PCBs |
| Zener Impedance ZZT | 1500 Ω at 250 mA - ensures stable regulation despite input ripple or load transients |
| Noise Density | 3.0 µV/√Hz at 1–3 kHz - critical for low-noise analog references and sensor excitation circuits |
| Temp. Coefficient αVZ | −0.045/+0.030 %/°C - minimizes drift over wide operating temperature ranges |
| Reverse Leakage IR | 5.0 µA max at 3.0 V - guarantees low standby power loss in high-impedance bias networks |
| Junction Temp. Range | −65 °C to +175 °C - qualified for extreme-environment deployment including space-grade systems |
Pinout & Package
DO-213AA (SOD-80 / CDLL34) MELF-style hermetically sealed glass package with axial symmetry and cathode band marking. Tin-lead or RoHS-compliant matte-tin plating; solderable per MIL-STD-750 Method 2026. Polarity: banded end = cathode (positive during Zener operation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Current sink terminal in Zener mode | Connected to lower-potential node (e.g., ground or return path) during regulation |
| Cathode (banded end) | Current source terminal in Zener mode | Connected to higher-potential node (e.g., supply rail or feedback point); polarity must be observed to avoid forward conduction |
Key Features
| Feature | Design Value |
|---|---|
| 1% Zener voltage tolerance | Reduces need for post-assembly trimming in precision reference designs |
| MIL-PRF-19500/435 qualification (JAN/JANTX/JANTXV/JANS) | Validated reliability for mission-critical avionics, defense electronics, and satellite subsystems |
| Metallurgically bonded construction | Eliminates interfacial delamination risk under thermal cycling and mechanical shock |
| Low noise density (3.0 µV/√Hz) | Enables use in high-resolution ADC references and low-drift op-amp bias networks |
| Hermetic glass sealing | Prevents moisture ingress and parameter shift over decades of field operation |
Applications
| High-Precision Reference Source | Aerospace Power Supply Feedback |
|---|---|
Use Scenario: Providing stable 5.1 V reference for 16-bit SAR ADCs and instrumentation amplifiers in downhole drilling sensors. IC Role / Device Role / Timing Role: Zener diode acting as primary voltage reference node, directly sourcing bias current to op-amp input stages. Use Value: 1% tolerance and −0.045/+0.030 %/°C TC ensure <±0.5% total error over −40 to +125 °C, eliminating external calibration. |
Use Scenario: Regulating feedback voltage in radiation-hardened DC-DC converters aboard LEO satellites. IC Role / Device Role / Timing Role: Zener diode in optocoupler-coupled feedback loop, maintaining output accuracy despite TID exposure. Use Value: Inherent radiation hardness per MicroNote 050 and JANS qualification enable >100 krad(Si) tolerance without derating. |
| Industrial Sensor Excitation | Military Analog Signal Conditioning |
Use Scenario: Biasing bridge-based pressure transducers in oil & gas control cabinets operating at 85 °C ambient. IC Role / Device Role / Timing Role: Zener diode supplying constant-current excitation via series resistor to Wheatstone bridge. Use Value: Stable 5.1 V output with <3.0 µV/√Hz noise ensures <0.01% measurement uncertainty in 24-bit sigma-delta systems. |
Use Scenario: Clamping transient voltages on analog front-end inputs of ruggedized tactical radios exposed to EMP. IC Role / Device Role / Timing Role: Zener diode configured as shunt protector on signal lines, absorbing ESD per MIL-STD-750 Method 1020. Use Value: Non-sensitive ESD behavior and hermetic seal prevent latent failures after repeated 8 kV HBM events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CDLL4625-1 | Same 5.1 V ±1%, DO-213AA package, commercial-grade (non-mil-qualified), RoHS-compliant e3 option available | Lacks JAN/JANTX/JANTXV/JANS screening; not rated for radiation or extended temp extremes | Select when cost-sensitive industrial designs require same electrical specs but no military reliability assurance |
| 1N4625UR-1 | Identical 5.1 V ±1% spec and DO-213AA package, but with 5% tolerance variant suffix omitted - same die, different screening/test flow | Commercial version without D-tolerance marking; may lack full 1% binning verification traceability | Choose only if 1% tolerance is not required and legacy BOM compatibility with non-D-suffix variants is needed |
Compared with CDLL4625-1 and 1N4625UR-1, the 1N4625DUR-1/TR uniquely combines 1% tolerance, tape-and-reel packaging (TR suffix), and full JANS-level qualification - making it the sole choice for radiation-tolerant, high-precision, production-ready military programs requiring zero rework on reference stability.
Availability
1N4625DUR-1/TR is available at Aetrix Electronics and suitable for aerospace power management, downhole instrumentation, and military radio subsystems requiring stable component supply with guaranteed long-term obsolescence support and traceable mil-spec sourcing.
Supply support for 1N4625DUR-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 analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.
The 1N4625DUR-1/TR belongs to Microsemi's legacy MIL-PRF-19500/435-qualified Zener diode family, engineered specifically for voltage reference stability, low-noise performance, and survivability in harsh environments - not general-purpose regulation.
FAQ
What is the Zener voltage tolerance and test current for 1N4625DUR-1/TR?
The 1N4625DUR-1/TR has a nominal Zener voltage of 5.1 V with ±1% tolerance, verified at a test current (IZT) of 250 mA. This tight tolerance is achieved through binning and is maintained across its qualified temperature range, ensuring predictable regulation without external trimming in precision circuits.
Is 1N4625DUR-1/TR qualified to JANS level per MIL-PRF-19500/435?
Yes, the 1N4625DUR-1/TR is fully qualified to JANS level per MIL-PRF-19500/435, including rigorous screening for burn-in, temperature cycling, and radiation hardness. The "D" in the part number denotes 1% tolerance, and the "UR-1" suffix confirms the DO-213AA package and military-grade construction used in JANS devices.
What does the "TR" suffix indicate in 1N4625DUR-1/TR?
The "TR" suffix in 1N4625DUR-1/TR indicates tape-and-reel packaging per EIA-481-1-A standard using 12 mm carrier tape. This format supports automated SMT placement and is required for high-volume production runs - distinct from bulk or ammo-pack options used in prototyping or low-volume repair.
How does the noise performance of 1N4625DUR-1/TR compare to standard Zeners?
The 1N4625DUR-1/TR delivers 3.0 µV/√Hz noise density at 1–3 kHz, significantly lower than typical 5% tolerance Zeners (often >10 µV/√Hz). This is enabled by metallurgical bonding and optimized junction design - making the 1N4625DUR-1/TR suitable for high-resolution data acquisition where reference noise directly limits system ENOB.
Can 1N4625DUR-1/TR replace 1N4625UR-1 in existing designs?
Yes, the 1N4625DUR-1/TR is a direct functional and mechanical replacement for 1N4625UR-1, sharing identical DO-213AA package dimensions, pinout, and 5.1 V nominal voltage. However, the "D" suffix adds 1% tolerance and full JANS screening - so it upgrades performance and reliability without layout changes.
1N4625DUR-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):
- 5.1 V
- Tolerance:
- ±1%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 1500 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-213AA
1N4625DUR-1/TR FAQ
1.How can I place an order for 1N4625DUR-1/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4625DUR-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 1N4625DUR-1/TR reliable?
The price and inventory of 1N4625DUR-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 1N4625DUR-1/TR is usually 5 days.
3.What payment methods are accepted for 1N4625DUR-1/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4625DUR-1/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4625DUR-1/TR?
1N4625DUR-1/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4625DUR-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 1N4625DUR-1/TR?
For technical support, including 1N4625DUR-1/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4625DUR-1/TR requirements.
6.How does Aetrix verify that 1N4625DUR-1/TR is sourced from the original manufacturer or authorized distributors?
All 1N4625DUR-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 1N4625DUR-1/TR meets industry standards.
7.What is the process for return or replacement of 1N4625DUR-1/TR?
All 1N4625DUR-1/TR units undergo pre-shipment inspection (PSI). If there is an issue with 1N4625DUR-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 1N4625DUR-1/TR part is unused and in its original packaging.
Return procedure for 1N4625DUR-1/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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