Overview
The STPS3L40S is a 40 V, 3 A low drop Schottky rectifier produced by STMicroelectronics. This component is specifically designed for use in switch-mode power supplies and high-frequency DC to DC converters. It is packaged in SMB Flat, SMB Flat Notch, and SMC formats, making it ideal for surface mounting. The STPS3L40S is known for its low forward voltage drop, negligible switching losses, and low thermal resistance, which make it highly efficient in various power supply applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VRRM (Repetitive peak reverse voltage) | 40 | V |
| IF(AV) (Average forward current, δ = 0.5, square wave) | 3 | A |
| IFSM (Surge non repetitive forward current, tp = 10 ms sinusoidal) | 75 | A |
| PARM (Repetitive peak avalanche power, tp = 10 µs, Tj = 125 °C) | 95 | W |
| Tstg (Storage temperature range) | -65 to +150 | °C |
| Tj (Maximum operating junction temperature) | +150 | °C |
| VF (Forward voltage drop at IF = 3 A, Tj = 25 °C) | 0.40 | V |
| Rth(j-l) (Junction to lead thermal resistance) | 15 (SMB Flat, SMB Flat Notch), 18 (SMC) | °C/W |
Key Features
- Negligible switching losses
- Low forward voltage drop
- Low thermal resistance
- Avalanche rated
- ECOPACK2 component, meeting environmental compliance standards
- Lead-free packages (SMB Flat, SMB Flat Notch, SMC)
- Epoxy meets UL94, V0 standards
Applications
- Telecom power supply
- Set-top box power supply
- TV power supply
- Battery chargers
- Switch-mode power supplies and high-frequency DC to DC converters
Q & A
- What is the maximum repetitive peak reverse voltage of the STPS3L40S?
The maximum repetitive peak reverse voltage (VRRM) is 40 V.
- What is the average forward current rating of the STPS3L40S?
The average forward current (IF(AV)) is 3 A for δ = 0.5, square wave.
- What is the surge non-repetitive forward current of the STPS3L40S?
The surge non-repetitive forward current (IFSM) is 75 A for tp = 10 ms sinusoidal.
- What is the maximum operating junction temperature of the STPS3L40S?
The maximum operating junction temperature (Tj) is +150 °C.
- What are the typical forward voltage drop values for the STPS3L40S?
The typical forward voltage drop (VF) is 0.40 V at IF = 3 A and Tj = 25 °C, and 0.44 V at Tj = 125 °C.
- What are the thermal resistance values for the different packages of the STPS3L40S?
The junction to lead thermal resistance (Rth(j-l)) is 15 °C/W for SMB Flat and SMB Flat Notch, and 18 °C/W for SMC.
- Is the STPS3L40S environmentally compliant?
- What are the common applications of the STPS3L40S?
The STPS3L40S is commonly used in telecom power supplies, set-top box power supplies, TV power supplies, battery chargers, and switch-mode power supplies.
- What types of packages are available for the STPS3L40S?
The STPS3L40S is available in SMB Flat, SMB Flat Notch, and SMC packages.
- Does the STPS3L40S meet UL94 standards?
