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Product Detailed Parameters
- Description：DIODE SCHOTTKY 20V 1A DO41
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：20 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：450 mV @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：1 mA @ 20 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：DO-204AL, DO-41, Axial
- Supplier Device Package：DO-41
- Operating Temperature - Junction：-65°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 1N5817 BK PBFREE is a silicon Schottky barrier rectifier designed for low voltage, high frequency applications. It features a single diode element in a DO-41 axial through-hole package. Key electrical parameters include a maximum repetitive peak reverse voltage of 20 V and an average forward rectified current of 1 A. The device exhibits a low forward voltage drop and negligible switching losses, making it suitable for switch mode power supplies and polarity protection circuits.
Feature Summary
- Schottky barrier construction provides extremely fast switching speeds and negligible switching losses.
- Guard ring die construction offers transient protection capabilities.
- Low forward voltage drop minimizes conduction losses for high efficiency.
- Epoxy casing meets UL 94 V-0 flammability rating.
Applications
- Switch Mode Power Supplies (SMPS)
- High frequency DC to DC converters
- Free wheeling diodes in inverter circuits
- Polarity protection circuits
Procurement Notes
Verify the specific manufacturer designation, as the 1N5817 part number is widely produced by multiple semiconductor vendors including STMicroelectronics and Diodes Inc. Confirm that the Central Semiconductor variant matches the required 20V reverse voltage and 1A current ratings for your design. Ensure the DO-41 axial package and lead-free finish align with your assembly specifications.
Selection Notes
Select this component when a low forward voltage drop and fast recovery are critical for efficiency in low voltage rectification. The DO-41 package is appropriate for through-hole mounting where higher surge current capability is needed compared to surface mount alternatives. Consider the 20V rating limit when designing for input voltages near this threshold.
Part Context
This component belongs to the standard 1N58xx series of Schottky rectifiers, differentiated primarily by their peak inverse voltage ratings. While the 1N5817 specifies a 20V rating, adjacent parts like the 1N5818 and 1N5819 offer 30V and 40V ratings respectively within the same physical footprint and current handling capacity.
Replacement Considerations
Direct functional substitutes include the 1N5817 from other manufacturers such as STMicroelectronics or Diodes Inc., provided they meet the identical 20V/1A/DO-41 specifications. Verify pinout compatibility and thermal resistance characteristics before substitution.
