Nexperia BC850CW 45V 100mA Low-Noise High-Gain NPN Transistor SC-70

The Nexperia BC850CW is a low-noise, high-gain NPN bipolar junction transistor housed in a compact SOT323 / SC-70 surface-mount package. Nexperia specifies the device for low-noise stages in audio-frequency equipment such as tape recorders and Hi-Fi amplifiers, and currently lists BC850CW as Production.

The device is rated for 45V collector-emitter voltage, 50V collector-base voltage, and 5V emitter-base voltage. Maximum continuous collector current is 100mA, peak collector current is 200mA, and maximum total power dissipation is 200mW.

As the C gain grade, BC850CW provides a DC current gain of 420 to 800 at IC = 2mA and VCE = 5V. Maximum VCE(sat) is 250mV at 10mA and 600mV at 100mA under the specified base-current conditions. Minimum transition frequency is 100MHz.

For low-noise amplification, Nexperia specifies a maximum 4dB noise figure under the stated 200µA collector-current test conditions. Maximum collector capacitance is 3pF.

The 3-pin SOT323 / SC-70 package measures approximately 2.0 × 1.25 × 0.95mm, and the BC850CW marking code is 2G. Current orderable packing variants include BC850CW,115 and BC850CW,135; both are listed as MSL Level 1 and compliant with EU RoHS and REACH requirements.

Key Features:

• Manufacturer: Nexperia
• Part Number: BC850CW
• Device Type: NPN Bipolar Transistor
• Application: Low-Noise Small-Signal Amplification
• Collector-Emitter Voltage: 45V
• Collector-Base Voltage: 50V
• Emitter-Base Voltage: 5V
• Continuous Collector Current: 100mA
• Peak Collector Current: 200mA
• Maximum Power Dissipation: 200mW
• DC Current Gain hFE: 420 to 800
• Minimum Transition Frequency: 100MHz
• Maximum Noise Figure: 4dB
• Maximum Collector Capacitance: 3pF
• Maximum VCE(sat): 250mV at 10mA
• Maximum VCE(sat): 600mV at 100mA
• Operating Ambient Temperature: -65°C to +150°C
• Maximum Junction Temperature: +150°C
• Package: SOT323 / SC-70
• Pin Count: 3
• Package Size: Approx. 2.0 × 1.25 × 0.95mm
• Marking Code: 2G
• MSL: Level 1
• EU RoHS / REACH Compliant
• Product Status: Production.