The triode 78L05 is not withdrawn like other transistors

It's not a triode, it's a three-terminal.

78L05 Description;

The 78L05 is a fixed voltage (5V) three-terminal integrated regulator that is suitable for a wide range of applications. As in the case of single-point regulation, it is necessary to limit noise and solve distribution problems in in-card regulation. In addition, they can be used in conjunction with other power transfer devices to form a regulated power supply with high currents, such as regulators that can drive output currents up to 100 mA.

Its excellent internal current limit and thermal shutdown characteristics make it particularly suitable for overload situations. When used to replace the traditional Zener diode-resistor bank, the output impedance is effectively improved and the bias current is greatly reduced.

This paragraph. 78L05 characteristics.

Three-terminal regulator.

The output current can reach 100mA

No external components are required.

Internal thermal overload protection.

Internal short-circuit current limit.

Since the end of 2004, all types of packaging forms provided are lead-free packaging products.

This paragraph. 78L05 Application Notes.

If the regulator is some distance away from the power filter, CIN is required and CO is optional for stability, but it does improve transient response.

This paragraph. 78L05 Applications;

Networking products. ***-rom，cd-rom。

Sound card and computer motherboard.

Linear regulated source.

Controller. This paragraph.

78L05 Typical Circuit Diagram;

Concentrate; (1) To determine the output voltage value, select the voltage value suffix (xx)2) For the best stability and transient response, it is recommended to use a side capacitor and install it next to the circuit as much as possible.

This paragraph. 78L05 internal circuit diagram;

78L05 internal circuit diagram;

This paragraph. 78L05** Analysis:

The three-terminal voltage regulator 78L05 has a high degree of attention on the web page, and the number of inquiries and ** appears frequently. There are also certain differences in the ** reported by different packages, and the average ** of ST brand's TO-92 package format is meta PCS; The packaging format of SOT89 is relatively high, with an average of yuan PCS. According to the analysis of Huaqiangbei index analysts, refer to Huaqiangbei market.

It's definitely different, you'll know for yourself.

78L05 is not a triode, it is generally used in the protection circuit of DC circuit, which plays the role of voltage reduction and voltage stabilization. The input voltage is generally not too large, less than 36V, and the back is often out of the oak L or H or blank to represent the rated current.

78L05 and 7805 are three-terminal regulator integrated circuits, the number behind 78 or 79 in the series of integrated voltage regulator IC models represents the output voltage of the three-terminal integrated voltage regulator circuit, such as 7806 means that the output voltage is positive 6V, and 7909 means that the output voltage is negative 9V.

The 78L05 is not a triode, but a three-terminal regulated integrated circuit with an input voltage of about 10V and a stable output of 5V. Commonly known as three-terminal voltage regulation, 7805 generation can be used.

78L05 is not a triode, 78L05 and 7805 are three-terminal regulated integrated circuits, the output voltage is 5 volts, the only difference is that the output current is different, the maximum output current of the former is only 100 mA, and the maximum output current of the latter can reach ampere. They don't have the same pinout, and for the 78L05, you face the model, and from left to right the pins are output, ground, and input.