1N5817RL

Overview

The onsemi 1N5817RL is an axial lead Schottky barrier rectifier featuring a 20 V peak repetitive reverse voltage and a 1.0 A average rectified forward current rating. It utilizes chrome barrier metal and epitaxial construction for low power loss and high efficiency. The device operates within a junction temperature range of -65°C to +125°C, with a maximum non-repetitive peak surge current of 25 A. Packaged in the DO-41 (CASE 59) format, this specific RL suffix variant is supplied in tape and reel packaging containing 5000 units.

Feature Summary

• Employs Schottky Barrier principle with majority carrier conduction for negligible switching losses
• Features extremely low forward voltage drop and low stored charge for high efficiency
• Includes avalanche capability specified for transient protection

Applications

• Low-voltage, high-frequency inverters
• Free wheeling diodes
• Polarity protection circuits

Procurement Notes

Verify that the ordering suffix 'RL' corresponds specifically to the tape and reel shipping configuration rather than bag packaging. Confirm the Pb-Free status by checking for the '/C0071' marking or 'G' designation on the component body. Ensure the procurement documentation explicitly references the onsemi datasheet 1N5817/D to validate electrical parameters against other manufacturers' equivalents.

Selection Notes

Select this component when designing circuits requiring fast switching speeds and minimal reverse recovery time associated with minority carrier storage. The 20 V rating suits low-voltage DC-DC converters and battery chargers. Consider the thermal resistance characteristics and mounting method when calculating maximum allowable ambient temperatures to prevent thermal runaway during continuous operation.

Part Context

This part belongs to the 1N581x series of axial lead rectifiers manufactured by onsemi. It shares the same die and mechanical outline as the 1N5817 and 1N5818 variants but is distinguished by its specific voltage rating of 20 V. The RL suffix indicates automated assembly packaging suitable for surface mount or through-hole pick-and-place equipment.

Replacement Considerations

Direct substitutes include the 1N5817 from other manufacturers such as Vishay or Taiwan Semiconductor, provided they meet the 1A/20V/DO-41 specifications. Verify that alternative sources offer the same axial lead package and thermal characteristics.