Word-free glass encapsulated diode is a common electronic device, and its common models are as follows:

1. 1N4 148: This is a common low-power high-speed diode, which is often used in low-frequency signal shaping, switching and protection circuits.

2. 1N4007: This is a commonly used high-power rectifier diode, which has stronger ability to withstand high voltage and high current, and is suitable for high-power applications such as power supply and motor drive.

3.BAT54: this is a bidirectional conduction diode, which can be used for forward and reverse circuits. Commonly used in power management, current measurement and switching circuits.

4. 1N58 19: This is a fast recovery diode with relatively fast recovery time, which is suitable for high-frequency switching circuits and power inverters.

These are just some common types of wordless glass encapsulated diodes, and there are many other types and specifications of diodes on the market. The specific choice of diode type needs to be determined according to the specific application and requirements.