STPS140A

Single Diodes Overview

The STPS140A is a single-chip Schottky rectifier designed for switched-mode power supplies and high-frequency DC-to-DC converters. It features a peak repetitive reverse voltage (Vrrm) of 40 V and an average forward current (If) of 1 A. The device utilizes a surface-mount DO-214AC (SMA) package with two pins. Key electrical parameters include a maximum forward voltage drop (Vf) of 0.43 V at 1 A, a peak reverse current (Ir) of 12 μA at 40 V, and a non-repetitive peak forward surge current (Ifsm) of 60 A. Operating temperatures range from -65°C to 150°C.

Single Diodes Feature Summary

• Very small conduction losses due to low forward voltage drop
• Negligible switching losses suitable for high-frequency applications
• Specified avalanche capability for enhanced robustness

Single Diodes Applications

• Switched Mode Power Supplies (SMPS)
• High frequency DC to DC converters
• Low voltage high frequency inverters
• Free wheeling diodes
• Polarity protection circuits

Single Diodes Procurement Notes

Verify the specific suffix 'A' against the manufacturer's official datasheet to confirm the exact package type and electrical tolerances. Ensure the component meets RoHS compliance requirements for your target market. Confirm availability through authorized distributors to avoid counterfeit parts, as surface-mount packages are prone to substitution. Check for automotive-grade variants if the application requires higher reliability standards.

Single Diodes Selection Notes

Select this component when designing low-voltage, high-efficiency power conversion stages requiring surface-mount integration. The SMA package offers space savings compared to through-hole alternatives. Consider the thermal resistance of the DO-214AC package in high-current scenarios. Verify that the 40 V rating provides sufficient headroom for the input voltage spikes in the specific circuit topology.

Single Diodes Part Context

The STPS140A belongs to the STPS140 series of power Schottky rectifiers manufactured by STMicroelectronics. This series is engineered specifically for surface mounting in compact electronic designs. The product line emphasizes efficiency in low-voltage applications where standard PN junction diodes would incur excessive conduction losses.

Single Diodes Replacement Considerations

STPS140U: Surface mount Schottky rectifier in DO-214AA package. STPS140Z: Surface mount Schottky rectifier in SMB package.