TFZGTR18B

Single Zener Diodes Overview

The TFZGTR18B is a single Zener diode manufactured by ROHM Semiconductor, designed for surface-mount applications. It features a nominal Zener voltage of 18 V with a power dissipation rating of 500 mW. The device operates within a junction temperature range up to +150 °C and exhibits a maximum reverse leakage current of 200 nA at the specified test conditions. Its electrical characteristics include a Zener impedance of 23 Ohms measured at a test current of 10 mA. The component is housed in an SOD-323HE-2 package, measuring 2.5 mm in length, 1.3 mm in width, and 0.8 mm in height.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through precise Zener breakdown characteristics in a compact surface-mount footprint.
• Engineered for high thermal stability with a maximum operating junction temperature of +150 °C.
• Features low reverse leakage current to minimize power loss in standby or off-state conditions.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Over-voltage protection stages in electronic systems
• Clamping applications for transient voltage suppression

Single Zener Diodes Procurement Notes

Verify the specific suffix and tape-and-reel quantity against the official datasheet before ordering. Confirm that the SOD-323HE-2 package dimensions align with your PCB land pattern requirements. Ensure the 500 mW power dissipation rating is sufficient for your thermal design under expected operating conditions. Check for any RoHS compliance documentation if required by your manufacturing standards.

Single Zener Diodes Selection Notes

Select this component when a 18 V Zener voltage is required in a small SMD package. Consider the 500 mW power rating and +150 °C junction temperature limit for thermal management. Compare the 23 Ohm Zener impedance against circuit sensitivity requirements. Verify compatibility with automated pick-and-place equipment due to the SOD-323HE-2 form factor.

Single Zener Diodes Part Context

This part belongs to the TFZ series of Zener diodes from ROHM Semiconductor. It is specifically designated for surface-mount technology (SMT) assembly. The device is categorized under general-purpose diodes and rectifiers. It serves as a discrete semiconductor solution for voltage regulation tasks in consumer and industrial electronics.

Single Zener Diodes Replacement Considerations

The TFZVTR18B is listed as a similar level replacement with the same pinout and package. Verify electrical parameters match your design requirements before substitution. Ensure the alternative part meets all environmental and reliability standards applicable to your application.