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Product Detailed Parameters
- Description：DIODE SCHOTTKY 20V 150MA DO204AH
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR)
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：20 V
- Current - Average Rectified (Io)：150mA
- Voltage - Forward (Vf) (Max) @ If：750 mV @ 35 mA
- Speed：Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：150 nA @ 16 V
- Capacitance @ Vr, F：4.5pF @ 0V, 1MHz
- Mounting Type：Through Hole
- Package / Case：DO-204AH, DO-35, Axial
- Supplier Device Package：DO-204AH (DO-35)
- Operating Temperature - Junction：-65°C ~ 150°C
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Overview
The Microchip Technology 1N6857-1/TR is a Schottky barrier diode designed for high-reliability applications. It features a metallurgically bonded construction within a hermetically sealed DO-213AA glass package, commonly referred to as MELF-2 or LL34. The device operates with a maximum repetitive reverse voltage of 20V and supports a forward current of 0.15A. It maintains a low maximum forward voltage of 0.35V and functions across an extended temperature range from -65°C to 150°C.
Feature Summary
- Hermetically sealed metallurgically bonded construction in a glass MELF package
- Schottky barrier technology ensuring low forward voltage drop
- Qualified per MIL-PRF-19500/444 standards for military grade reliability
Applications
- High-reliability aerospace systems
- Military electronic circuits
- Harsh environment power rectification
Procurement Notes
Verify the specific suffix against official documentation to confirm qualification levels. The base part number indicates military qualification under MIL-PRF-19500/444. Confirm that the TR suffix denotes tape and reel packaging compatible with automated assembly processes. Ensure the component meets the required environmental specifications for the intended operational temperature range.
Selection Notes
Select this component when hermetic sealing and radiation hardness are critical requirements. The Schottky structure provides faster switching speeds compared to standard junction diodes. Verify compatibility with the target circuit's voltage and current limits. Consider the surface mount MELF package for space-constrained designs requiring robust physical protection.
Part Context
This component belongs to the 1N6857 series of Schottky barrier diodes manufactured by Microchip Technology. It shares characteristics with related variants such as CDLL6857E3, though commercial versions may lack military qualification grades. The series is engineered for durability in demanding environments where standard semiconductor packages might fail.
Replacement Considerations
Check datasheets for equivalent parts like CDLL6857E3. Note that CDLL prefixes typically indicate commercial versions without military qualification grades. Verify package dimensions and electrical parameters match before substitution.
