Transistors - Bipolar (BJT) - Single TRANS NPN 45V 0.2A TO-92 MPSA18 is a small signal, low noise NPN silicon transistor designed for general purpose amplifier applications.
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MPSA18 Pre-Amp Boost/LM386 Power Amplifier Distortion
Transistors - Bipolar (BJT) - Single TRANS NPN 45V 0.2A TO-92
MPSA18 is a small signal, low noise NPN silicon transistor designed for general purpose amplifier applications. This article mainly covers datasheet pdf, pinout, equivalents, substitute, and other details about MPSA18 general purpose transistor. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!
MPSA18
The MPSA18 is an NPN General Purpose Transistor with a high gain and low noise. It can magnify even very low-power signals while maintaining a decent signal-to-noise ratio. The transistor has a maximum gain of 1500 and a noise figure of only 1.5dB, making it excellent for situations where amplification of extremely small or low gain signals to high gain is required.
MPSA18 Pinout
| Pin Number | Pin Name | Description |
| 1 | Emitter | Current Drains out through emitter, normally connected to ground |
| 2 | Base | Controls the biasing of the transistor, Used to turn ON or OFF the transistor |
| 3 | Collector | Current flows in through collector, normally connected to load |
MPSA18 Symbol
MPSA18 Footprint
MPSA18 3D Model
ON Semiconductor MPSA18 technical specifications, attributes, parameters and parts with similar specifications to ON Semiconductor MPSA18.
| Product Attribute | Attribute Value | |
|---|---|---|
| Lifecycle Status | OBSOLETE (Last Updated: 1 week ago) | |
| Mount | Through Hole | |
| Mounting Type | Through Hole | |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | |
| Number of Pins | 3Pins | |
| Supplier Device Package | TO-92-3 | |
| Weight | 201mg | |
| Collector-Emitter Breakdown Voltage | 45V | |
| Collector-Emitter Saturation Voltage | 80mV | |
| Current-Collector (Ic) (Max) | 200mA | |
| Number of Elements | 1 Element | |
| hFEMin | 500 | |
| Operating Temperature | -55°C~150°C TJ | |
| Packaging | Bulk | |
| Published | 1997 | |
| Part Status | Obsolete |
| Product Attribute | Attribute Value | |
|---|---|---|
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Max Operating Temperature | 150°C | |
| Min Operating Temperature | -55°C | |
| Voltage - Rated DC | 45V | |
| Max Power Dissipation | 625mW | |
| Current Rating | 100mA | |
| Frequency | 100MHz | |
| Base Part Number | MPSA18 | |
| Polarity | NPN | |
| Element Configuration | Single | |
| Power Dissipation | 625mW | |
| Power - Max | 625mW | |
| Gain Bandwidth Product | 100MHz | |
| Transistor Type | NPN | |
| Collector Emitter Voltage (VCEO) | 45V | |
| Max Collector Current | 200mA |
| Product Attribute | Attribute Value | |
|---|---|---|
| DC Current Gain (hFE) (Min) @ Ic, Vce | 500 @ 10mA 5V | |
| Current - Collector Cutoff (Max) | 50nA ICBO | |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 5mA, 50mA | |
| Voltage - Collector Emitter Breakdown (Max) | 45V | |
| Max Frequency | 160MHz | |
| Max Breakdown Voltage | 45V | |
| Frequency - Transition | 160MHz | |
| Collector Base Voltage (VCBO) | 45V | |
| Emitter Base Voltage (VEBO) | 6.5V | |
| Height | 5.33mm | |
| Length | 5.2mm | |
| Width | 4.19mm | |
| REACH SVHC | No SVHC | |
| RoHS Status | Non-RoHS Compliant | |
| Lead Free | Lead Free |
Package Type: TO-92
Transistor Type: NPN
Max Collector Current(IC): 100mA
Max Collector-Emitter Voltage (VCE): 45V
Max Collector-Base Voltage (VCB): 45V
Max Emitter-Base Voltage (VEBO): 5V
Max Collector Dissipation (Pc): 625 mW
Max Transition Frequency (fT): 100 MHz
Minimum & Maximum DC Current Gain (hFE): 400– 1500
Max Storage & Operating temperature should Be: -55 to +150 Centigrade
Sensor / Detector Applications
Radio & RF Applications under 100MHz
Audio Recorders
Voice Recorders
Audio Preamplifiers & Amplifiers
Audio Amplifier Stages
Small Signal Amplification
Driving Loads under 100mA
Low Power Amplifier Designs
The output stage of Amplifiers
General-purpose switching
MPSA18 can be utilized in a wide range of applications where a small signal or low gain signal needs to be amplified to a high gain signal, such as radio receiver circuits, radio receiver front end circuits, audio preamplifiers, and any form of low-level signal in electronics. It can also be employed in many RF applications below 100MHz.
MPSA18 Application Circuit
MPSA18 transistors and various passive components make up the preamplifier circuit.
The preamplifier's purpose is to strengthen the audio signal before it enters the main amplifier stage, where it is amplified by the 5 stage MPSA18 transistor.
| Characteristics | MPSA18 | 2N5088 | MPSA13 (Darlington) |
| Collector to base voltage (VCB) | 45V | 35V | 30V |
| Collector to emitter voltage (VCE) | 45V | 30V | 30V |
| Emitter to base voltage (VEB) | 6.5V | 4.5V | 10V |
| Collector current (IC) | 200mA | 100mA | 500mA |
| Power dissipation | 625mW | 625mW | 625mW |
| Junction temperature (TJ) | -55 to 150°C | -55 to 150°C | -55 to +150°C |
| Transition frequency (FT) | 160MHZ | 50MHZ | 125MHz |
| Noise (NF) | 1.5dB | 3dB | - |
| Gain (hFE) | 400 to 1500hFE | - | 5000 to 10000hFE |
| Package | TO-92 | TO-92 | TO-92 |
MPSA18 Dimension Package
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