Overview
The BC857A-7-F is a PNP small-signal transistor manufactured by Diodes Incorporated. This transistor is part of the BC856A – BC858C series and is designed for various electronic applications. It is particularly suited for automatic insertion, making it ideal for high-volume production environments. The BC857A-7-F is also fully RoHS compliant and meets JEDEC standards for high reliability, ensuring it is environmentally friendly and reliable in operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT23 | |
| Collector-Base Voltage (Vcbo) | -45 | V |
| Collector-Emitter Voltage (Vceo) | -45 | V |
| Emitter-Base Voltage (Vebo) | -5 | V |
| Collector Current (Ic) | -100 | mA |
| Base Current (Ib) | -50 | mA |
| DC Current Gain (hFE) | 125-250 | |
| Collector-Emitter Saturation Voltage (Vce(sat)) | -75 to -300 mV | mV |
| Base-Emitter Turn-On Voltage (Vbe(on)) | -600 to -750 mV | mV |
| Base-Emitter Saturation Voltage (Vbe(sat)) | -700 mV | mV |
| Operating Temperature Range | -55 to +150°C | °C |
| Weight | Approx. 0.008 grams | grams |
Key Features
- Ideally suited for automatic insertion, making it suitable for high-volume production.
- Complementary NPN types: BC846 – BC848.
- For switching and AF amplifier applications.
- Totally lead-free and fully RoHS compliant.
- Halogen and antimony free, classified as a “Green” device.
- Qualified to JEDEC standards for high reliability.
- Molded plastic package with UL flammability classification rating 94V-0.
- Moisture sensitivity level 1 per J-STD-020.
- Terminals with matte tin plated leads, solderable per MIL-STD-202, Method 208.
Applications
- Switching applications: The BC857A-7-F is suitable for various switching circuits due to its high current gain and low saturation voltage.
- AF Amplifier Applications: It is used in audio frequency amplifier circuits where high fidelity and low noise are required.
- Automotive Electronics: An automotive-compliant version (BC857AQ) is available, making it suitable for use in automotive systems.
- General Purpose Amplification: It can be used in general-purpose amplifier circuits where a PNP transistor with good current gain is needed.
Q & A
- What is the package type of the BC857A-7-F transistor?
The BC857A-7-F transistor comes in a SOT23 package.
- What is the maximum collector current of the BC857A-7-F?
The maximum collector current is -100 mA.
- Is the BC857A-7-F RoHS compliant?
- What are the typical applications of the BC857A-7-F transistor?
The transistor is typically used in switching and AF amplifier applications.
- What is the operating temperature range of the BC857A-7-F?
The operating temperature range is -55 to +150°C.
- Is the BC857A-7-F suitable for automotive applications?
An automotive-compliant version (BC857AQ) is available, but the standard BC857A-7-F is not specifically designed for automotive use.
- What is the DC current gain (hFE) of the BC857A-7-F transistor?
The DC current gain (hFE) ranges from 125 to 250.
- What is the collector-emitter saturation voltage (Vce(sat)) of the BC857A-7-F?
The collector-emitter saturation voltage (Vce(sat)) ranges from -75 to -300 mV.
- Is the BC857A-7-F halogen and antimony free?
- What is the moisture sensitivity level of the BC857A-7-F?
The moisture sensitivity level is 1 per J-STD-020.
