Overview
The MMBF5457LT1 is a general-purpose N-Channel JFET (Junction Field-Effect Transistor) produced by onsemi. This device is designed for low-level audio amplification and analog switching applications. It is part of the Process 55 and is known for its reliability and performance in various electronic circuits. The MMBF5457LT1 is available in a Pb-Free SOT-23 package, making it suitable for modern electronic designs that require minimal environmental impact.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Drain-Source Voltage | VDS | 25 | Vdc | ||
| Drain-Gate Voltage | VDG | 25 | Vdc | ||
| Reverse Gate-Source Voltage | VGS(r) | -25 | Vdc | ||
| Gate Current | IG | 10 | mAdc | ||
| Total Device Dissipation (FR-5 Board, TA = 25°C) | PD | 225 | mW | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 556 | °C/W | ||
| Junction and Storage Temperature | TJ, Tstg | -55 | 150 | °C | |
| Gate-Source Breakdown Voltage (IG = 10 μA, VDS = 0) | V(BR)GSS | -25 | Vdc | ||
| Gate Reverse Current (VGS = -15 V, VDS = 0) | IGSS | -1.0 | nAdc | ||
| Gate Source Cutoff Voltage (VDS = 15 V, ID = 10 nA) | VGS(off) | -0.5 | -6.0 | Vdc | |
| Zero-Gate Voltage Drain Current (VDS = 15 V, VGS = 0) | IDSS | 1.0 | 5.0 | mAdc | |
| Forward Transfer Admittance (VDS = 15 V, VGS = 0, f = 1.0 kHz) | |Yfs| | 1000 | 5000 | μmhos | |
| Input Capacitance (VDS = 15 V, VGS = 0, f = 1.0 MHz) | Ciss | 7.0 | pF | ||
| Reverse Transfer Capacitance (VDS = 15 V, VGS = 0, f = 1.0 MHz) | Crss | 3.0 | pF |
Key Features
- Pb-Free SOT-23 package, making it environmentally friendly and compliant with current regulations.
- Low noise figure, suitable for low-level audio amplification.
- High forward transfer conductance, enhancing its performance in analog switching applications.
- Wide operating temperature range from -55°C to 150°C, ensuring reliability in various environments.
- Low gate reverse current, reducing power consumption and improving efficiency.
- Compact SOT-23 package, ideal for space-constrained designs.
Applications
The MMBF5457LT1 is versatile and can be used in a variety of applications, including:
- Low-level audio amplifiers: Due to its low noise figure and high forward transfer conductance, it is well-suited for audio amplification.
- Analog switching: Its high performance in switching applications makes it a reliable choice for analog circuits.
- General-purpose amplifiers: It can be used in various amplifier circuits where low noise and high reliability are required.
- Electronic instruments: Suitable for use in musical instruments, audio equipment, and other electronic devices that require high-quality amplification.
Q & A
- What is the maximum drain-source voltage of the MMBF5457LT1?
The maximum drain-source voltage (VDS) is 25 Vdc. - What is the operating temperature range of the MMBF5457LT1?
The operating and storage temperature range is from -55°C to 150°C. - Is the MMBF5457LT1 available in a Pb-Free package?
Yes, the MMBF5457LT1 is available in a Pb-Free SOT-23 package. - What is the typical zero-gate voltage drain current of the MMBF5457LT1?
The typical zero-gate voltage drain current (IDSS) is between 1.0 mA and 5.0 mA. - What is the forward transfer admittance of the MMBF5457LT1?
The forward transfer admittance (|Yfs|) is between 1000 μmhos and 5000 μmhos at 1.0 kHz. - What are the typical applications of the MMBF5457LT1?
The MMBF5457LT1 is typically used in low-level audio amplifiers, analog switching applications, and general-purpose amplifiers. - What is the thermal resistance, junction-to-ambient, of the MMBF5457LT1?
The thermal resistance, junction-to-ambient (RθJA), is 556 °C/W. - Is the MMBF5457LT1 suitable for high-temperature environments?
Yes, it can operate in a wide temperature range from -55°C to 150°C. - What is the input capacitance of the MMBF5457LT1?
The input capacitance (Ciss) is up to 7.0 pF at 1.0 MHz. - Has the MMBF5457LT1 been discontinued?
There have been reports of difficulty in sourcing this component, but it is not officially confirmed as discontinued by onsemi. However, users are advised to check current availability and potential substitutes.
