BZX84C12LT3G

Single Zener Diodes Overview

The BZX84C12LT3G is a single Zener voltage regulator diode from the BZX84CxxxLT1G series, manufactured by onsemi. It is housed in an SOT-23 (CASE 318) surface-mount package with three pins: Anode (Pin 1), No Connection (Pin 2), and Cathode (Pin 3). The device provides a nominal reverse Zener voltage of 12 V with a tolerance range of 11.4 V to 12.7 V at a test current of 5 mA. It features a maximum power dissipation of 250 mW on FR-5 boards and operates within a junction temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Designed for voltage regulation with minimal space requirements using the SOT-23 surface-mount package.
• Optimized for automated board assembly processes suitable for high-density applications.
• Compliant with RoHS standards and manufactured as a lead-free device.

Single Zener Diodes Applications

• Cellular phones
• Handheld portable devices
• High density PC boards

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix LT3G against the datasheet to confirm tape and reel packaging quantities and ensure compatibility with automated placement equipment. Confirm that the application environment does not exceed the maximum thermal resistance limits specified for FR-5 substrates. Ensure compliance with the manufacturer's disclaimer regarding life support systems and medical device classifications.

Single Zener Diodes Selection Notes

Select this component when a standard 5% tolerance Zener voltage is required in a compact surface-mount form factor. The BZX84C series offers a wide breakdown voltage range from 2.4 V to 75 V. Consider the thermal derating characteristics if operating above 25°C ambient temperature or on substrates other than FR-5. Verify pinout alignment with the PCB footprint, specifically noting Pin 2 is unconnected.

Single Zener Diodes Part Context

This part belongs to the BZX84CxxxLT1G series of Zener Voltage Regulators offered by onsemi. The series includes various voltage ratings within the same SOT-23 package family. The 'C' designation indicates standard tolerance, while the 'LT1G' suffix denotes the specific tape and reel packaging configuration for automated assembly.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering SOT-23 Zener diodes with 12V nominal voltage and similar power dissipation ratings. Verify electrical parameters such as impedance and leakage current match the design requirements before substitution.