P-Channel Junction Field-Effect Transistors (JFET)
Description
P-Channel Junction Field-Effect Transistors (JFETs) are semiconductor devices that control the flow of electrical current. They function as voltage-controlled resistors, where the current flow between the source and drain terminals is modulated by the voltage applied to the gate terminal. This modulation allows for precise control over the electrical characteristics of the circuit in which the JFET is used.
Working Principle
P-Channel JFETs operate by utilizing a channel of P-type semiconductor material through which majority carriers (holes) flow. The gate, made of N-type material, forms a P-N junction with the channel. When a negative voltage is applied to the gate relative to the source, it increases the width of the depletion region, reducing the channel's conductivity. This voltage-controlled mechanism allows the JFET to act as a switch or amplifier, making it useful in various electronic applications. The high input impedance and low noise characteristics of JFETs make them particularly advantageous for sensitive signal processing tasks.
Applications
P-Channel JFETs are commonly used in applications requiring low noise and high input impedance. They are often found in audio amplifiers, where their ability to handle small signal levels without introducing significant noise is crucial. Additionally, they are used in analog switches and multiplexers, where their fast switching capabilities and low power consumption are beneficial.
Advantages over other Junction Field-Effect Transistors (JFET)
P-Channel JFETs offer specific advantages in circuits where negative gate voltages are more convenient or where complementary P-Channel and N-Channel devices are used together to create push-pull amplifier configurations. Their ability to operate with negative gate-source voltages can simplify the design of certain types of analog circuits.
Limitations
One limitation of P-Channel JFETs is their generally lower transconductance compared to N-Channel JFETs, which can result in reduced gain in amplifier applications. Additionally, P-Channel JFETs may have higher on-resistance, which can affect the efficiency of power-sensitive applications.
Considerations
When considering the use of P-Channel JFETs, it is important to evaluate the initial costs, which can vary based on the specific device and manufacturer. Operating expenses are typically low due to the JFET's high input impedance and low power consumption. Durability is generally good, but care must be taken to avoid exceeding the maximum gate-source voltage to prevent damage. Replacement and maintenance costs are minimal, as JFETs are solid-state devices with no moving parts. However, ensuring proper thermal management can extend the device's lifespan and maintain accuracy in performance.
from RS Components, Ltd.
JFET,p-channel,25V,60mA,SOT23 [See More]
- Polarity: P-Channel
- Package Type: SOT23; Sot-23
from ODG (Origin Data Global)
JFET P-CH 40V 0.35W TO92 [See More]
- Polarity: P-Channel; P-Channel
- TJ: -65 to 135
- VGS(off): 0.7500
- Package Type: TO-92; TO-226-3, TO-92-3 Long Body
from Win Source Electronics
Win Source Part Number: 1037502-2SJ03640QL. Category: Discrete Semiconductor Products >Transistors - JFETs. Package: Tape & Reel. Standard Package: 3,000. Mounting: SMD (SMT). FET Type: P-Channel. Power - Max: 150 mW. Current - Drain (Idss) @ Vds (Vgs=0): 600 µA @ 10 V. Current Drain... [See More]
- Polarity: P-Channel
- rDS(on): 300
- VGS(off): 1.5
- TJ: 150
from RS Components, Ltd.
Transistor, Fairchild, MMBFJ270 [See More]
- Polarity: P-Channel
- Package Type: SOT23; Sot-23
from ODG (Origin Data Global)
JFET P-CH 30V 0.35W TO92-3 [See More]
- Polarity: P-Channel; P-Channel
- rDS(on): 125
- VGS(off): 3
- TJ: -55 to 150
from Win Source Electronics
Win Source Part Number: 1377172-MMBFJ175LT3G. Category: Discrete Semiconductor Products - Transistors - JFETs. Temperature Range - Operating: -55 °C ~ 150 °C (TJ). Fake Threat In the Open Market: 52 pct. MSL Level: 1 (Unlimited). Mfr: onsemi. Package: Tape & Reel. Product Status:... [See More]
- Polarity: P-Channel
- rDS(on): 125
- VGS(off): 3
- TJ: -55 to 150
from RS Components, Ltd.
Transistor, Fairchild, MMBFJ176 [See More]
- Polarity: P-Channel
- Package Type: SOT23; Sot-23
from ODG (Origin Data Global)
JFET P-CH 40V 0.225W SOT23 [See More]
- Polarity: P-Channel; P-Channel
- TJ: -55 to 150
- VGS(off): 0.7500
- Package Type: SOT23; TO-236-3, SC-59, SOT-23-3
from Win Source Electronics
Manufacturer: Central Semiconductor Corp. Win Source Part Number: 1123793-2N3820. Packaging: Bulk. Mounting Style: Through Hole. Transistor Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 20V. Categories: Discrete Semiconductor Products. Supplier Device Package: TO-92. Status: Obsolete. [See More]
- Polarity: P-Channel; P-Channel
- TJ: -65 to 150
- V(BR)DSS: 20
- Package Type: TO-92; SOT3
from ODG (Origin Data Global)
JFET P-CH 30V 0.225W SOT23-3 [See More]
- Polarity: P-Channel; P-Channel
- rDS(on): 125
- VGS(off): 3
- TJ: -55 to 150
from Win Source Electronics
Manufacturer: Microsemi Corporation. Win Source Part Number: 134222-2N5115. Packaging: Bulk. Mounting: Through Hole. Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 30V. Current - Drain (Idss) @ Vds (Vgs=0): 60mA @ 15V. Voltage - Cutoff (VGS off) @ Id: 6V @ 1nA. Resistance - RDS(On): 100 Ohm. [See More]
- Polarity: P-Channel; P-Channel
- VGS(off): 6
- V(BR)DSS: 30
- rDS(on): 100
from ODG (Origin Data Global)
JFET P-CH 30V 0.225W SOT23-3 [See More]
- Polarity: P-Channel; P-Channel
- rDS(on): 300
- VGS(off): 0.8000
- TJ: -55 to 150
from Win Source Electronics
Manufacturer: Central Semiconductor Corp. Win Source Part Number: 005708-2N5116. Packaging: Tube/Rail. Mounting: Through Hole. Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 30V. Current - Drain (Idss) @ Vds (Vgs=0): 5mA @ 15V. Voltage - Cutoff (VGS off) @ Id: 1V @ 1nA. Resistance - RDS(On):... [See More]
- Polarity: P-Channel; P-Channel
- rDS(on): 150
- VGS(off): 1
- PD: 500
from Win Source Electronics
Manufacturer: Central Semiconductor Corp. Win Source Part Number: 075339-2N5460. Packaging: Bulk. Mounting: Through Hole. Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 40V. Current - Drain (Idss) @ Vds (Vgs=0): 1mA @ 15V. Voltage - Cutoff (VGS off) @ Id: 750mV @ 1 μA. Categories:... [See More]
- Polarity: P-Channel; P-Channel
- PD: 310
- VGS(off): 0.7500
- TJ: -65 to 150
from Win Source Electronics
Manufacturer: ON Semiconductor. Win Source Part Number: 153084-2N5461. Packaging: Bulk. Mounting: Through Hole. Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 40V. Current - Drain (Idss) @ Vds (Vgs=0): 2mA @ 15V. Voltage - Cutoff (VGS off) @ Id: 1V @ 1 μA. Family Name: 2N5461. Categories:... [See More]
- Polarity: P-Channel; P-Channel
- PD: 350
- VGS(off): 1
- TJ: -65 to 135
from Win Source Electronics
Manufacturer: Central Semiconductor Corp. Win Source Part Number: 1029682-CMPFJ175 TR. Packaging: Reel - TR. Mounting: SMD (SMT). Polarity: P-Channel. Voltage - Breakdown (V(BR)GSS): 30V. Current - Drain (Idss) @ Vds (Vgs=0): 7mA @ 15V. Voltage - Cutoff (VGS off) @ Id: 3V @ 10nA. Resistance -... [See More]
- Polarity: P-Channel; P-Channel
- rDS(on): 125
- VGS(off): 3
- PD: 350
from Win Source Electronics
Manufacturer: ON Semiconductor. Win Source Part Number: 876162-J175-D26Z. Operating Temperature Range: -55 °C ~ 150 °C (TJ). Features: JFET P-Channel Through Hole TO-92-3. Package: TO-226-3, TO-92-3 (TO-226AA) (Formed Leads). Package: Reel - TR. Mounting: Through Hole. Family Name: J175. [See More]
- Polarity: P-Channel
- Package Type: TO-92; SOT3; TO-92-3
- TJ: -55 to 150
from New Jersey Semi-Conductor Products, Inc.
Trans JFET P-CH 5mA 3-Pin TO-18 [See More]
- Polarity: P-Channel
- TJ: 200
- IDSS: 5
from Utmel Electronic Limited
JFET P-CH 40V 0.225W SOT23 [See More]
- Polarity: P-Channel; P-CHANNEL
- PD: 200
- Transistor Technology / Material: SILICON
- Packing Method: Tape Reel; Cut Tape (CT)
from Linear Systems
This dual P-Channel JFET amplifier is designed to provide a balance between very low noise (en = 2.0nV/ √Hz) and very low input capacitance (Ciss = 8pF). [See More]
- Polarity: P-Channel
from LCSC Electronics Technology (HK) Limited
225mW 7mA@15V P-Channel 125 Ω 30V SOT-23 JFETs ROHS [See More]
- Polarity: P-Channel
- VGS(off): 3
- IDSS: 7
- rDS(on): 125
from Karl Kruse GmbH & Co. KG
Karl Kruse is a worldwide leading franchised distributor (ISO: 9001-2008 certified). A service provider specializing in the supply and material management of electronic components, since 1951. We are an innovative company who is dedicated to collaborating with customers and partners to develop... [See More]
- Polarity: P-Channel
from Utmel Electronic Limited
NXP PMBFJ174,215 P-channel JFET Transistor, 30 V, Idss 20135mA, 3-Pin SOT-23 [See More]
- Polarity: P-Channel
- V(BR)DSS: 30
- Transistor Technology / Material: SILICON
- VGS(off): 5
from Linear Systems
LOW NOISE, LOW CAPACITANCE SINGLE P-CHANNEL JFET [See More]
- Polarity: P-Channel
from LCSC Electronics Technology (HK) Limited
225mW 1.5mA@15V P-Channel 300 Ω 30V SOT-23 JFETs ROHS [See More]
- Polarity: P-Channel
- VGS(off): 0.8000
- IDSS: 1.5
- rDS(on): 300
from Linear Systems
GENERAL PURPOSE SINGLE P-CHANNEL JFET [See More]
- Polarity: P-Channel
from LCSC Electronics Technology (HK) Limited
225mW 2mA@15V P-Channel 30V SOT-23 JFETs ROHS [See More]
- Polarity: P-Channel
- VGS(off): 0.5000
- IDSS: 2
- PD: 225
from Linear Systems
The 174DFN Series Low On-Resistance, P-Channel JFET Switch is a direct replacement for Fairchild and Siliconix-Vishay equivalent part. It is ideal for Low Resistance, Low Operating Current Switching Applications. Available TO-92 3L ROHS and SOT-23 3L ROHS package, as well as Tested Die. All Linear... [See More]
- Polarity: P-Channel
- Package Type: TO-92; SOT23
from Linear Systems
The 2N5018 Series Low On-Resistance, P-channel JFET Switch is a direct replacement for the Intersil and Siliconix-Vishay equivalent part. It is ideal for Low Resistance Switching Applications. Available in TO-18 3L ROHS package, as well as Tested Die. All Linear Systems devices are available with... [See More]
- Polarity: P-Channel
- Package Type: TO-18