PNP Small Signal Transistor Taiwan Semiconductor BC857B RFG Ideal for Power Supply and Lighting Applications
Key Attributes
Model Number:
BC857B RFG
Product Custom Attributes
Current - Collector Cutoff:
100nA
DC Current Gain:
220@2mA,5V
Transition Frequency(fT):
100MHz
Type:
PNP
Vce Saturation(VCE(sat)):
650mV@5mA,100mA
Pd - Power Dissipation:
200mW
Current - Collector(Ic):
100mA
Collector - Emitter Voltage VCEO:
45V
Operating Temperature:
-55℃~+150℃@(Tj)
Mfr. Part #:
BC857B RFG
Package:
SOT-23
Product Description
Product Overview
The BC856A/B, BC857A/B/C, and BC858A/B/C are PNP small signal transistors from Taiwan Semiconductor. These devices offer low power loss and high efficiency, making them ideal for automated placement. They feature high surge current capability and are compliant with RoHS and Halogen-free standards. Applications include switching mode power supplies, adapters, lighting, and on-board DC/DC converters.
Product Attributes
- Brand: Taiwan Semiconductor
- Product Type: PNP Small Signal Transistor
- Moisture Sensitivity Level: Level 1, per J-STD-020
- Certifications: RoHS Compliant, Halogen-free according to IEC 61249-2-21
- Flammability Rating: UL 94 V-0
- Terminal Plating: Matte tin plated leads, solderable per J-STD-002
- Whisker Test: Meet JESD 201 class 1A
- Weight: 0.008 g (approximately)
Technical Specifications
| Model | VCBO (V) | VCEO (V) | VEBO (V) | IC (A) | hFE (min-max) | Package | Collector Cutoff Current (nA) | Emitter Cutoff Current (A) | Collector-Emitter Saturation Voltage (V) | Base-Emitter Saturation Voltage (V) | Transition Frequency (MHz) |
| BC856A/B | -80 | -65 | -5 | -0.1 | 250-800 | SOT-23 | -100 (at VCB=-70V) | -0.1 (at VEB=-5V) | -0.65 | -1.10 | 100 (at VCE=-5V, IC=-10mA) |
| BC857A/B/C | -50 | -45 | -5 | -0.1 | 125-250 (A), 220-475 (B), 420-800 (C) | SOT-23 | -100 (at VCB=-45V) | -0.1 (at VEB=-5V) | -0.65 | -1.10 | 100 (at VCE=-5V, IC=-10mA) |
| BC858A/B/C | -30 | -30 | -5 | -0.1 | 125-250 (A), 220-475 (B), 420-800 (C) | SOT-23 | -100 (at VCB=-25V) | -0.1 (at VEB=-5V) | -0.65 | -1.10 | 100 (at VCE=-5V, IC=-10mA) |
2504101957_Taiwan-Semiconductor-BC857B-RFG_C7085407.pdf
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