The BC857A, BC857B, and BC857C are PNP small signal transistors designed for switching and AF amplifier applications. They are available in a SOT-23 package and offer features such as Halogen Free availability, Moisture Sensitivity Level 1, and UL 94 V-0 flammability rating. These RoHS compliant devices are suitable for various electronic circuits requiring amplification and switching functions.
| Parameter | Symbol | BC857A | BC857B | BC857C | Conditions | Min | Typ | Max | Unit |
| Electrical Characteristics | DC Current Gain (Note2) | VCE=-5V, IC=-2mA, f=1KHz | |||||||
| 200 | 330 | 475 | IC=-100mA, IB=-5mA | ||||||
| 220 | 475 | 600 | IC=-100mA, IB=-5mA | ||||||
| 290 | 600 | 800 | IC=-100mA, IB=-5mA | ||||||
| Small Signal Current Gain | hfe | VCE=-5V, IC=-2mA, f=1KHz | |||||||
| 18 | 30 | ||||||||
| 22 | 40 | ||||||||
| Maximum Ratings | Peak Collector Current | ICM | -200 | mA | |||||
| Peak Emitter Current | IEM | -200 | mA | ||||||
| Collector Current | IC | -100 | mA | ||||||
| Power Dissipation (Note1) | PD | TS=50 | 310 | mW | |||||
| Collector-Emitter Voltage | VCEO | -45 | V | ||||||
| Emitter-Base Voltage | VEBO | -5 | V | ||||||
| Collector-Base Voltage | VCBO | -50 | V | ||||||
| Thermal Resistance | Junction to Solder-point (Note1) | 320 | /W | ||||||
| Thermal Resistance | Junction to Ambient (Note1) | 403 | /W | ||||||
| Operating Junction Temperature Range | -55 | +150 | |||||||
| Storage Temperature Range | -55 | +150 |