Overview
The PBR941 is a UHF wideband transistor manufactured by NXP Semiconductors. It is a silicon NPN transistor packaged in a surface mount 3-pin SOT23 package. This transistor is designed for wideband applications in the GHz range, particularly in the RF front end of analog and digital cellular telephones, cordless phones, radar detectors, pagers, and satellite TV-tuners. The PBR941 is known for its small size, low noise, low distortion, and high gain, making it an excellent choice for various communication and instrumentation systems.
Key Specifications
| Parameter | Conditions | Typical | Maximum | Unit |
|---|---|---|---|---|
| Feedback Capacitance (Cre) | IC = 0; VCB = 6 V; f = 1 MHz | 0.3 | - | pF |
| Transition Frequency (fT) | IC = 15 mA; VCE = 6 V; fm = 1 GHz | 8-9 | - | GHz |
| Maximum Unilateral Power Gain (GUM) | IC = 15 mA; VCE = 6 V; f = 1 GHz; Tamb = 25 °C | 15-16 | - | dB |
| Noise Figure (NF) | ΓS = Γopt; IC = 5 mA; VCE = 6 V; f = 1 GHz | 1.5-2.5 | - | dB |
| Total Power Dissipation (Ptot) | Ts = 60 °C | - | 360 mW | mW |
| Thermal Resistance from Junction to Soldering Point (Rth j-s) | Ptot = 360 mW | - | 320 K/W | K/W |
| Collector-Base Voltage (VCBO) | Open emitter | - | 20 V | V |
| Collector-Emitter Voltage (VCEO) | Open base | - | 10 V | V |
| Emitter-Base Voltage (VEBO) | Open collector | - | 1.5 V | V |
| Collector Current (IC) | - | - | 50 mA | mA |
| Junction Temperature (Tj) | - | - | 150 °C | °C |
Key Features
- Small Size: Packaged in a surface mount 3-pin SOT23 package, making it suitable for compact designs.
- Low Noise: Offers a low noise figure, typically between 1.5 and 2.5 dB at 1 GHz.
- Low Distortion: Designed to minimize distortion, ensuring high signal integrity.
- High Gain: Provides high gain, with a maximum unilateral power gain of up to 16 dB at 1 GHz.
- Gold Metallization: Ensures excellent reliability due to gold metallization.
Applications
The PBR941 transistor is primarily intended for wideband applications in the GHz range, particularly in:
- Analog and digital cellular telephones
- Cordless phones
- Radar detectors
- Pagers
- Satellite TV-tuners
- Communication and instrumentation systems
Q & A
- What is the package type of the PBR941 transistor?
The PBR941 transistor is packaged in a surface mount 3-pin SOT23 package.
- What are the typical applications of the PBR941 transistor?
The PBR941 is used in analog and digital cellular telephones, cordless phones, radar detectors, pagers, and satellite TV-tuners.
- What is the maximum collector current of the PBR941 transistor?
The maximum collector current (IC) is 50 mA.
- What is the typical noise figure of the PBR941 transistor at 1 GHz?
The typical noise figure is between 1.5 and 2.5 dB at 1 GHz.
- What is the maximum unilateral power gain of the PBR941 transistor?
The maximum unilateral power gain (GUM) is up to 16 dB at 1 GHz.
- What is the thermal resistance from junction to soldering point for the PBR941 transistor?
The thermal resistance from junction to soldering point (Rth j-s) is 320 K/W.
- What is the maximum junction temperature for the PBR941 transistor?
The maximum junction temperature (Tj) is 150 °C.
- What is the collector-base breakdown voltage of the PBR941 transistor?
The collector-base breakdown voltage (VCBO) is 20 V.
- What is the collector-emitter breakdown voltage of the PBR941 transistor?
The collector-emitter breakdown voltage (VCEO) is 10 V.
- What is the total power dissipation of the PBR941 transistor?
The total power dissipation (Ptot) is 360 mW at Ts = 60 °C.
