BFR93 Technical Summary

BFR93 NPN RF Transistor Technical Summary

Overview

The BFR93 is a high-performance NPN silicon RF transistor designed for applications requiring high power gain and low noise figure. Packaged in compact SOT-23 and SOT-23R variants, this component is optimized for use in high-frequency circuits. With its high transition frequency and excellent gain characteristics, the BFR93 is particularly suited for RF amplification stages in communication systems.

Features

High power gain for superior signal amplification
Low noise figure (typically 1.0dB at 1GHz) for improved signal integrity
High transition frequency (f_T up to 6GHz) enabling high-frequency operation
Available in space-saving SOT-23 (BFR93) and SOT-23R (BFR93R) packages
Robust construction with plastic case for durability
Marking: R1 for SOT-23, R4 for SOT-23R package variants

Applications

The BFR93 is ideal for a wide range of RF applications, including:

RF amplifiers in communication systems
Low-noise amplifier (LNA) stages
VHF/UHF receiver front-ends
Wireless communication equipment
Signal processing circuits
Oscillator circuits
RF signal amplification in test equipment

Electrical Characteristics

Absolute Maximum Ratings

Stresses exceeding these ratings may cause permanent device damage.

Collector-Base Voltage (V_CBO): 20V
Collector-Emitter Voltage (V_CEO): 12V
Emitter-Base Voltage (V_EBO): 2V
Collector Current (I_C): 40mA
Total Power Dissipation (P_tot): 300mW at T_amb ≤ 25°C
Operating Junction Temperature (T_j): -55°C to +150°C
Storage Temperature Range (T_stg): -55°C to +150°C

Typical Performance Characteristics

(Unless otherwise specified, at T_amb = 25°C, V_CE = 8V, I_C = 10mA)

DC Current Gain (h_FE): 40-120
Transition Frequency (f_T): 6GHz (typical)
Noise Figure (NF): 1.0dB typical at 1GHz
Power Gain (G_p): 15dB typical at 1GHz
Collector-Emitter Saturation Voltage (V_CE(sat)): 0.3V max at I_C = 10mA, I_B = 1mA

Package Information

SOT-23 Package (BFR93)

Package Type: SOT-23 (TO-236)
Marking Code: R1
Pin Configuration:
- Pin 1: Collector
- Pin 2: Base
- Pin 3: Emitter
Package Dimensions: 2.9mm × 1.3mm × 1.1mm (typical)
Moisture Sensitivity Level (MSL): 1 (Unlimited floor life at ≤30°C/85%RH)

SOT-23R Package (BFR93R)

Package Type: SOT-23R (SC-75)
Marking Code: R4
Pin Configuration:
- Pin 1: Collector
- Pin 2: Base
- Pin 3: Emitter
Package Dimensions: 2.9mm × 1.6mm × 1.1mm (typical)
Moisture Sensitivity Level (MSL): 1 (Unlimited floor life at ≤30°C/85%RH)

Thermal Characteristics

Thermal Resistance, Junction to Ambient (R_thJA): 357°C/W (SOT-23)
Thermal Resistance, Junction to Case (R_thJC): 125°C/W (SOT-23)

Handling and Mounting

For optimal performance and reliability:

Follow standard ESD precautions during handling
Use recommended soldering profiles:
- Wave soldering: 260°C peak temperature for ≤10 seconds
- Reflow soldering: 235°C peak temperature for ≤30 seconds
Maintain PCB cleanliness to prevent contamination
Avoid mechanical stress during assembly