MMBT3904 datasheet by NXP Semiconductors

MMBT3904 Frequently Asked Questions (FAQs)

• What is the maximum operating temperature range for the MMBT3904?
  The MMBT3904 can operate safely between -55°C to 150°C, but the recommended operating temperature range is -40°C to 85°C for optimal performance.
• How do I ensure the MMBT3904 is properly biased for saturation?
  To ensure the MMBT3904 is properly biased for saturation, the base-emitter voltage (VBE) should be around 0.7V, and the collector-emitter voltage (VCE) should be around 0.2V to 0.5V. The base current should be around 1/10th to 1/20th of the collector current.
• What is the maximum current handling capacity of the MMBT3904?
  The MMBT3904 can handle a maximum continuous collector current (IC) of 200mA, and a peak current of 400mA for a short duration (less than 100ms).
• How do I protect the MMBT3904 from electrostatic discharge (ESD)?
  To protect the MMBT3904 from ESD, handle the device by the body, avoid touching the pins, use an anti-static wrist strap or mat, and store the device in an anti-static bag or container.
• Can I use the MMBT3904 as a switch?
  Yes, the MMBT3904 can be used as a switch, but it's not recommended for high-frequency switching applications due to its relatively slow switching time (around 100ns). It's better suited for low-frequency switching or amplification applications.