Datasheets
2N4123 by:

Small Signal Bipolar Transistor, 0.2A I(C), 30V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, TO-226AA, 3 PIN

Part Details for 2N4123 by Motorola Semiconductor Products

Results Overview of 2N4123 by Motorola Semiconductor Products

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Applications Consumer Electronics Audio and Video Systems

2N4123 Information

2N4123 by Motorola Semiconductor Products is a Small Signal Bipolar Transistor.
Small Signal Bipolar Transistors are under the broader part category of Transistors.

A transistor is a small semiconductor device used to amplify, control, or create electrical signals. When selecting a transistor, factors such as voltage, current rating, gain, and power dissipation must be considered, with common types. Read more about Transistors on our Transistors part category page.

Price & Stock for 2N4123

Part # Distributor Description Stock Price Buy
Bristol Electronics   60
RFQ
Chip 1 Exchange INSTOCK 5000
RFQ

Part Details for 2N4123

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2N4123 Part Data Attributes

2N4123 Motorola Semiconductor Products
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2N4123 Motorola Semiconductor Products Small Signal Bipolar Transistor, 0.2A I(C), 30V V(BR)CEO, 1-Element, NPN, Silicon, TO-92, TO-226AA, 3 PIN
Rohs Code No
Part Life Cycle Code Transferred
Ihs Manufacturer MOTOROLA INC
Package Description TO-226AA, 3 PIN
Reach Compliance Code unknown
ECCN Code EAR99
HTS Code 8541.29.00.75
Collector Current-Max (IC) 0.2 A
Collector-Base Capacitance-Max 4 pF
Collector-Emitter Voltage-Max 30 V
Configuration SINGLE
DC Current Gain-Min (hFE) 25
JEDEC-95 Code TO-92
JESD-30 Code O-PBCY-T3
JESD-609 Code e0
Number of Elements 1
Number of Terminals 3
Operating Temperature-Max 150 °C
Package Body Material PLASTIC/EPOXY
Package Shape ROUND
Package Style CYLINDRICAL
Polarity/Channel Type NPN
Power Dissipation Ambient-Max 1.5 W
Power Dissipation-Max (Abs) 0.35 W
Qualification Status Not Qualified
Surface Mount NO
Terminal Finish Tin/Lead (Sn/Pb)
Terminal Form THROUGH-HOLE
Terminal Position BOTTOM
Transistor Application SWITCHING
Transistor Element Material SILICON
Transition Frequency-Nom (fT) 250 MHz
VCEsat-Max 0.3 V

2N4123 Related Parts

2N4123 Frequently Asked Questions (FAQ)

  • The maximum safe operating area (SOA) for the 2N4123 is not explicitly stated in the datasheet, but it can be estimated based on the device's thermal characteristics and voltage ratings. As a general rule, it's recommended to operate the device within the specified voltage and current ratings to ensure reliable operation.

  • To ensure the 2N4123 is properly biased for linear operation, you should follow the recommended biasing scheme outlined in the datasheet. This typically involves setting the base-emitter voltage (Vbe) to around 0.7V and the collector-emitter voltage (Vce) to around 1-2V. You may also need to adjust the bias resistors to achieve the desired quiescent current.

  • The maximum frequency of operation for the 2N4123 is not explicitly stated in the datasheet, but it can be estimated based on the device's transition frequency (fT) and current gain-bandwidth product (GBW). As a general rule, the 2N4123 can operate up to several hundred kHz, but the actual frequency limit will depend on the specific application and circuit design.

  • To handle thermal management for the 2N4123, you should ensure that the device is properly mounted on a heat sink or PCB with adequate thermal conductivity. You should also follow the recommended thermal design guidelines outlined in the datasheet, including keeping the junction temperature (Tj) below the maximum rated value of 150°C.

  • The 2N4123 has built-in ESD protection, but it's still important to follow proper ESD handling and storage procedures to prevent damage to the device. You should also ensure that the device is properly connected to a ground plane or ESD protection network to prevent electrostatic discharge.

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