Overview
The BC857BT-7-F is a PNP small signal transistor manufactured by Diodes Incorporated. This transistor is part of the BC857 series, which includes the BC857AT, BC857BT, and BC857CT models. It is designed for general-purpose amplification and switching applications. The BC857BT-7-F features an ultra-small surface mount package (SOT-523) and is fully RoHS compliant, making it suitable for a wide range of electronic devices.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit | Test Condition |
|---|---|---|---|---|---|---|
| Collector-Base Breakdown Voltage | BVCBO | -50 | - | - | V | IC = -100µA, IE = 0 |
| Collector-Emitter Breakdown Voltage | BVCEO | -45 | - | - | V | IC = -1mA, IB = 0 |
| Emitter-Base Breakdown Voltage | BVEBO | -6 | - | - | V | IE = -100µA, IC = 0 |
| DC Current Gain (hFE) | - | 220 | 420 | - | - | VCE = -5V, IC = -2mA |
| Collector-Emitter Saturation Voltage (VCE(SAT)) | - | -300 | -650 | mV | IC = -10mA, IB = -0.5mA | |
| Base-Emitter Saturation Voltage (VBE(SAT)) | - | -700 | -900 | mV | IC = -10mA, IB = -0.5mA | |
| Collector Current (IC) | - | -100 | mA | - | - | |
| Power Dissipation (Pd) | - | 150 | mW | - | - | |
| Operating Frequency | - | 100 | MHz | - | - | |
| Package Type | - | SOT-523 | - | - | - | |
| Case Material | - | Molded Plastic | - | - | - | |
| UL Flammability Rating | - | 94V-0 | - | - | - | |
| Moisture Sensitivity | - | Level 1 per J-STD-020 | - | - | - |
Key Features
- High Collector-Emitter Breakdown Voltage: Up to -45V, making it suitable for a variety of applications requiring high voltage handling.
- Ultra-Small Surface Mount Package: SOT-523 package, ideal for space-constrained designs.
- High DC Current Gain: With a typical hFE of 220, it ensures reliable amplification.
- Low Collector-Emitter Saturation Voltage: Minimizes power consumption and heat generation.
- RoHS Compliant and Lead-Free: Fully compliant with EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2), and 2015/863/EU (RoHS 3), and halogen and antimony free.
- AEC-Q101 Qualified: Ensures high reliability for automotive and other demanding applications.
Applications
- General-Purpose Amplification: Suitable for various amplification tasks in electronic circuits.
- Switching Applications: Can be used in switching circuits due to its low saturation voltage and high current gain.
- Automotive Electronics: Qualified to AEC-Q101 standards, making it reliable for use in automotive systems.
- Consumer Electronics: Ideal for use in consumer devices where space is limited and high reliability is required.
Q & A
- What is the collector-emitter breakdown voltage of the BC857BT-7-F?
The collector-emitter breakdown voltage (BVCEO) is -45V.
- What is the typical DC current gain (hFE) of the BC857BT-7-F?
The typical DC current gain (hFE) is 220.
- What is the package type of the BC857BT-7-F?
The package type is SOT-523.
- Is the BC857BT-7-F RoHS compliant?
Yes, it is fully RoHS compliant and lead-free.
- What is the maximum collector current (IC) of the BC857BT-7-F?
The maximum collector current (IC) is -100mA.
- What is the power dissipation (Pd) of the BC857BT-7-F?
The power dissipation (Pd) is 150mW.
- Is the BC857BT-7-F qualified for automotive applications?
Yes, it is qualified to AEC-Q101 standards for high reliability in automotive and other demanding applications.
- What is the moisture sensitivity level of the BC857BT-7-F?
The moisture sensitivity level is 1 per J-STD-020.
- What is the UL flammability rating of the BC857BT-7-F?
The UL flammability rating is 94V-0.
- What is the case material of the BC857BT-7-F?
The case material is molded plastic with a UL flammability rating of 94V-0.
