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Product Detailed Parameters
- Description：TH RECTIFIER-SCHOTTKY (>=1A) SIN
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Box
- Technology：Schottky
- Voltage - DC Reverse (Vr) (Max)：40 V
- Current - Average Rectified (Io)：1A
- Voltage - Forward (Vf) (Max) @ If：600 mV @ 1 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：1 mA @ 40 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 1N5819 BK PBFREE is a 40 V, 1 A axial power Schottky rectifier housed in the DO-41 package. Designed for switch mode power supplies and high frequency DC to DC converters, it offers very small conduction losses and negligible switching losses. The device features extremely fast switching, low forward voltage drop, and specified avalanche capability. It is intended for use in low voltage, high frequency inverters, free wheeling, polarity protection, and small battery chargers.
Feature Summary
- Very small conduction losses
- Negligible switching losses
- Extremely fast switching
- Low forward voltage drop
- Avalanche capability specified
Applications
- Switch Mode Power Supplies
- High frequency DC to DC converters
- Low voltage, high frequency inverters
- Free wheeling circuits
- Polarity protection
- Small battery chargers
Procurement Notes
Verify the specific manufacturer datasheet for the 1N5819 BK PBFREE variant, as specifications may vary between producers. Confirm that the 'BK' suffix denotes the correct marking code or packaging style required for your assembly process. Ensure the component meets RoHS compliance if indicated by the PBFREE designation. Cross-reference electrical parameters with the original Motorola or current manufacturer documentation to guarantee compatibility with existing circuit designs.
Selection Notes
Select this component when low forward voltage drop and fast switching are critical for efficiency in low voltage applications. The DO-41 axial package suits through-hole mounting requirements. Consider the 40 V reverse voltage rating and 1 A average forward current limits. Verify thermal management needs based on conduction losses. Ensure the avalanche capability aligns with transient voltage expectations in the target circuit environment.
Part Context
The 1N5819 is a widely recognized standard Schottky barrier rectifier originally defined by Motorola. It serves as a baseline for low-loss rectification in consumer electronics and industrial power supplies. The Central Semiconductor Corp version adheres to this legacy specification while incorporating modern manufacturing processes. It remains a common choice for designers prioritizing cost-effectiveness and proven reliability in general-purpose rectification tasks.
Replacement Considerations
Direct substitutes include other manufacturers' 1N5819 variants such as those from STMicroelectronics or Fairchild. Ensure equivalent electrical ratings: 40 V reverse voltage, 1 A forward current, and DO-41 package. Verify pinout compatibility and thermal characteristics. Check for any differences in surge current ratings or reverse leakage specifications before final substitution.
