Overview
The BC857AT-7-F is a PNP small signal transistor manufactured by Diodes Incorporated. This transistor is part of the BC857 series, which includes the BC857AT, BT, and CT variants. It is designed for use in a variety of small signal applications due to its high reliability and compact package.
The BC857AT-7-F is housed in an ultra-small SOT-523 surface mount package, making it ideal for space-constrained designs. It is also fully compliant with RoHS and AEC-Q101 standards, ensuring high reliability and environmental sustainability.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|---|
| Collector-Base Breakdown Voltage | VCBO | -50 | - | - | V | IC = -100µA, IE = 0 |
| Collector-Emitter Breakdown Voltage | VCEO | -45 | - | - | V | IC = -1mA, IB = 0 |
| Emitter-Base Breakdown Voltage | VEB0 | -6 | - | - | V | IE = -100µA, IC = 0 |
| Collector Current | IC | - | - | -100 | mA | - |
| Power Dissipation | Pd | - | - | 150 | mW | - |
| Thermal Resistance, Junction to Ambient | RθJA | - | - | 833 | °C/W | - |
| Operating and Storage Temperature Range | Tj | -55 | - | 150 | °C | - |
Key Features
- Epitaxial Planar Die Construction: Ensures reliable and stable performance.
- Ultra-Small Surface Mount Package (SOT-523): Ideal for space-constrained designs.
- Complementary NPN Type: Available as BC847AT, BT, CT for matching NPN applications.
- Lead-Free and RoHS Compliant: Meets EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2), and 2015/863/EU (RoHS 3).
- AEC-Q101 Qualified: Ensures high reliability for automotive and other demanding applications.
- Halogen and Antimony Free: Classified as a 'Green' device with <900ppm bromine, <900ppm chlorine, and <1000ppm antimony compounds.
- Molded Plastic Case with UL Flammability Rating 94V-0: Enhances safety and durability.
- Moisture Sensitivity Level 1 per J-STD-020C: Suitable for a wide range of environmental conditions.
- Solderable per MIL-STD-202, Method 208: Ensures reliable soldering and assembly.
Applications
- Small Signal Amplification: Suitable for general-purpose amplification in audio, video, and other small signal applications.
- Switching Circuits: Can be used in switching circuits due to its low saturation voltage and high current gain.
- Automotive Electronics: AEC-Q101 qualification makes it suitable for use in automotive systems.
- Consumer Electronics: Ideal for use in various consumer electronic devices due to its compact size and high reliability.
- Industrial Control Systems: Can be used in industrial control systems requiring small signal transistors with high reliability.
Q & A
- What is the collector-emitter breakdown voltage of the BC857AT-7-F?
The collector-emitter breakdown voltage (VCEO) is -45V.
- What is the maximum collector current for the BC857AT-7-F?
The maximum collector current (IC) is -100mA.
- Is the BC857AT-7-F RoHS compliant?
Yes, the BC857AT-7-F is fully RoHS compliant and lead-free.
- What is the thermal resistance, junction to ambient, for the BC857AT-7-F?
The thermal resistance, junction to ambient (RθJA), is 833°C/W.
- What is the operating temperature range for the BC857AT-7-F?
The operating and storage temperature range is -55°C to 150°C.
- Is the BC857AT-7-F suitable for automotive applications?
Yes, it is qualified to AEC-Q101 standards, making it suitable for automotive and other high-reliability applications.
- What is the package type of the BC857AT-7-F?
The BC857AT-7-F is packaged in an ultra-small SOT-523 surface mount package.
- Does the BC857AT-7-F have a complementary NPN type?
Yes, the complementary NPN type is available as BC847AT, BT, CT.
- What is the moisture sensitivity level of the BC857AT-7-F?
The moisture sensitivity level is Level 1 per J-STD-020C.
- Is the BC857AT-7-F 'Green' and halogen-free?
Yes, it is classified as a 'Green' device, being halogen and antimony free.
