TZQ5262B-GS18

The TZQ5262B-GS18 is a single Zener diode, part of a wide range of diodes designed by the semiconductor manufacturer Renesas. This part is a rectifier, with a forward voltage of 5.2V and a maximum reverse voltage of 18V. It is typically used in low-voltage applications such as power supplies and voltage regulation.

In simple terms, the TZQ5262B-GS18\'s function is to allow current to flow in one direction only. When a sufficient voltage is applied from the positive line, the diode turns on and allows the current to flow. Conversely, when the applied voltage is insufficient, the diode remains off and blocks the current from flowing. This enables the use of a relatively constant voltage in an electronic circuit. The forward voltage is the minimum voltage that needs to be applied for the diode to turn on, with a maximum forward voltage indicated on the part.

The reverse voltage, indicated by the number before the letter “M” (18V in this particular part number), is the maximum voltage it can withstand without breaking down. This is important to prevent transient events such as lightning strikes from damaging the diode. As a Zener diode, the TZQ5262B-GS18 is voltage-dependent and has a built-in reverse breakdown voltage.

On the technical side, the dissipation rating of the TZQ5262B-GS18 is 625mW, meaning the total power it can dissipate without overheating is 625 milliwatts. The maximum forward current is 500mA, and the maximum reverse current is 5µA. It also carries a maximum operating temperature of +150°C, and a storage temperature of -55°C to +150°C. The junction capacitance is 10pF, and the package size is a 0805 miniature size.

Because of its small size and low voltage, the TZQ5262B-GS18 is ideal for applications where space is limited and a constant voltage is needed. These applications include voltage regulation circuits, battery-powered devices, amplifier circuits, and power supplies. The device is also used as a voltage-clamping device in transient voltage suppression, such as in TVS diodes (transient voltage suppressors).

In summary, the TZQ5262B-GS18 is a single, low-voltage Zener diode from Renesas that is typically used in low-voltage applications such as voltage regulation, power supplies, battery-powered devices, amplifier circuits, and as a voltage-clamping device in transient voltage suppression.