Transistor RM3 Alternative - Funkbasis.de (2024)

FAQs

How do you find substitute transistors? ›

Choose a substitute transistor with a maximum power rating at least as high as the original. Current gain is only occasionally significant when choosing a substitute transistor. Actual circuit gain depends on other components. But if the original transistor has a high gain, try to match it.

BC547 Equivalents

The BC series, such as BC549 and BC639, are the finest recommendations for the BC547 transistor equivalent, followed by the 2N2222 transistor. BC636 replaces BC547, 2N2369, 2N3055, 2N3904, 2N3906, and 2SC5200 in the PNP.

The features and specifications of the BC557 transistor include the following. Equivalent BC557 PNP Transistors are BC157, 2N3906, BC558, 2SA1943, S8550, BD140, TIP127 & TIP42. The complimentary of BC557 NPN transistor is BC547.

tube – conclusion. So, there are the objective differences between transistor and tube amplifiers. In most cases, amps with tube preamps and power amps have the upper hand when it comes to tone and sound.

If it drives a load, it can be determined if it is a N-FET or NPN if the transistor switches load ground or P-FET or PNP if it switches load supply. If the transistor is controlled with current, then it's a BJT, if with voltage, it's a FET. JFETs are used to do very specialized things in analog circuits.

Transistors typically fall into two main types depending on their construction. These two types are bipolar junction transistors (BJT) and Field Effect Transistors (FET).

2N2222 is the most common and excellent substitute for BC547. It has all similar characteristics including pin to pin compatibility and other major electrical characteristics as evident from the datasheets of the transistors.

2N3904: The 2N3904 is an NPN transistor that is widely regarded as a suitable substitute for the C945. It has similar voltage and current ratings, making it a commonly used alternative. 2. BC547: The BC547 is another NPN transistor that can be used as a substitute for the C945.

BC547 is usually used for current amplifier, quick switching and pulse-width modulation (PWM). Therefore, if you need to control the speed of a motor or actuator in some of your projects, you can simply use this transistor to achieve it.

The BC549 can be replaced by a BC550; both are Low Noise general purpose types. Or a BC549B or a BC549C or a BC550C. Since BC549 is a general-purpose NPN BJT, a 2N2222 should do the job in most of the typical applications (or basically any general purpose silicon NPN).

What is the equivalent of TTC5200 transistor? ›

TTA1943 and TTC5200 - Equivalent to 2SA1943 and 2SC5200 Transistors.

The most obvious alternatives to transistors are vacuum tubes and electromechanical relays. In addition, magnetic amplifiers (magamps) are useful. Piezoelectric relays are rare. Rotating amplifiers, such as amplidyne motor-generator machines are useful at higher power levels.

The MOSFET is by far the most widely used transistor, in applications ranging from computers and electronics to communications technology such as smartphones.

A common method of matching transistors is to use a fancy active current source to drive a stable current through the devices one at a time and to record the individual Vbe values. Then matched devices are selected based on the recorded values. There are a couple of limitations to this method.

The schematic symbols for NPN and PNP transistors are extremely similar. The sole distinction is the orientation of the arrow on the emitter. It points outward in an NPN (on the left) and inward in a PNP (on the right).

Looking at the datasheet, Hfe could be as low as 30 at 100mA. The base current should then be IC/ Hfe = 118mA/30mA = 4mA. We will add a factor of two for safety and use a base current of 8mA (to make sure the transistor turns on fully). Finally calculate the value for R2, the base resistor.