Overview
The STPS1045B is a high-voltage Schottky rectifier produced by STMicroelectronics. This device is designed for applications requiring low forward voltage drop and small footprints on PC boards. It is particularly suited for switch-mode power supplies, other power converters, and high-frequency circuitries where low switching losses are essential. The STPS1045B is packaged in the popular DPAK (TO-252AA) outline, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Units | Conditions |
|---|---|---|---|
| IF(AV) - Average Forward Current | 10 | A | 50% duty cycle, TC = 151°C, rectangular waveform |
| VRRM - Repetitive Peak Reverse Voltage | 45 | V | |
| IFSM - Surge Non-Repetitive Forward Current | 390 | A | tp = 5 µs sine or 3 µs rectangular pulse |
| VF - Forward Voltage Drop | 0.57 | V | IF = 10 A, TJ = 125°C |
| TJ - Maximum Junction Temperature | 175 | °C | |
| IRM - Maximum Reverse Leakage Current | 0.2 | mA | TJ = 25°C, VR = VRRM |
| CT - Typical Junction Capacitance | 760 | pF | VR = 5 V DC, 25°C |
| Rth(j-c) - Thermal Resistance Junction to Case | 3 | °C/W | |
| Rth(j-a) - Thermal Resistance Junction to Ambient | 50 | °C/W |
Key Features
- Very small conduction losses and negligible switching losses.
- Extremely fast switching and low thermal resistance.
- Low forward voltage drop, typically 0.57 V at 10 A and TJ = 125°C.
- Low capacitance, with a typical junction capacitance of 760 pF at VR = 5 V DC.
- High reverse avalanche surge capability and avalanche specification.
- AEC-Q101 qualified for automotive applications.
- ECOPACK®2 compliant, meeting environmental requirements.
- Guard ring for enhanced ruggedness and long-term reliability.
Applications
- Switch-mode power supplies and other power converters.
- Disk drives and battery charging systems.
- Free-wheeling diodes and reverse battery protection.
- High-frequency circuitries where low switching losses are required.
Q & A
- What is the maximum average forward current of the STPS1045B?
The maximum average forward current (IF(AV)) is 10 A.
- What is the repetitive peak reverse voltage (VRRM) of the STPS1045B?
The VRRM is 45 V.
- What is the typical forward voltage drop at 10 A and TJ = 125°C?
The typical forward voltage drop (VF) is 0.57 V.
- What is the maximum junction temperature (TJ) of the STPS1045B?
The maximum junction temperature is 175°C.
- What is the thermal resistance from junction to case (Rth(j-c))?
The thermal resistance from junction to case is 3°C/W.
- What are the typical applications of the STPS1045B?
Typical applications include switch-mode power supplies, disk drives, battery charging, and free-wheeling diodes).
- Is the STPS1045B AEC-Q101 qualified?
- What package type is the STPS1045B available in?
The STPS1045B is available in the DPAK (TO-252AA) package).
- What is the maximum reverse leakage current at TJ = 25°C and VR = VRRM?
The maximum reverse leakage current (IRM) is 0.2 mA).
- Is the STPS1045B ECOPACK® compliant?
