2SA812B-T1B-AT

Single Bipolar Transistors Overview

The 2SA812B-T1B-AT is a surface-mount unidirectional transient voltage suppressor diode manufactured by Renesas Electronics. It features a nominal breakdown voltage of 12 V and is designed for protecting sensitive electronic circuits from electrostatic discharge and other transient voltage events. The device operates within standard commercial temperature ranges and is available in a compact three-lead package suitable for automated assembly processes.

Single Bipolar Transistors Feature Summary

• Unidirectional configuration for polarity-specific circuit protection
• Transient voltage suppression capability with 12 V nominal rating
• Surface-mount construction for efficient PCB integration

Single Bipolar Transistors Applications

• General-purpose transient voltage protection in consumer electronics
• Input/output port protection in embedded systems
• Circuit safeguarding against electrostatic discharge events

Single Bipolar Transistors Procurement Notes

Verify the specific suffix -T1B-AT to confirm the tape-and-reel packaging format and quantity per reel. Ensure the component meets RoHS compliance requirements for your manufacturing process. Confirm the active status and lead-free specifications directly with authorized distributors or Renesas Electronics before placing orders.

Single Bipolar Transistors Selection Notes

Select this component when a low-profile, unidirectional TVS solution is required for 12 V nominal lines. Consider the three-lead MM package dimensions for space-constrained layouts. Verify that the unidirectional characteristic aligns with the DC bias polarity of the protected circuit to ensure proper clamping behavior during transient events.

Single Bipolar Transistors Part Context

This part belongs to Renesas' discrete semiconductor portfolio, specifically within the transient voltage suppressor diode category. Renesas acquired NEC Electronics Corporation in 2010, inheriting this product line. The component serves as a protective element in broader system designs, often paired with microcontrollers or interface circuits requiring ESD resilience.

Single Bipolar Transistors Replacement Considerations

Consult official Renesas documentation for qualified substitute part numbers. Cross-reference pinout compatibility and electrical ratings such as breakdown voltage and peak pulse current before implementing any alternative components in existing designs.