BTS133TCBUMA1

Power Distribution Switches, Load Drivers Overview

The BTS133TCBUMA1 is a single-channel low-side smart power switch from the Classic HITFET family, manufactured by Infineon Technologies. It integrates an N-channel vertical power FET with embedded protection features and diagnostic capabilities. The device operates within a supply voltage range up to 60 V and supports a nominal load current of 3.8 A per channel. Key electrical parameters include a maximum on-state resistance (RDS(on)) of 50 mΩ at 25°C and 120 mΩ at 150°C. It withstands short-circuit currents up to 21 A and offers high avalanche energy capability of 2000 mJ. The component is designed for surface-mount technology (SMT) installation and functions reliably across an extended junction temperature range from -40°C to 150°C.

Power Distribution Switches, Load Drivers Feature Summary

• Integrates SIPMOS technology with built-in overcurrent, overtemperature, and reverse polarity protection mechanisms.
• Features latch-off protection strategy to safeguard the load and driver during fault conditions.
• Provides robust performance with high avalanche energy capability for demanding automotive environments.

Power Distribution Switches, Load Drivers Applications

• Automotive lighting systems
• Body control modules
• General low-side switching applications in automotive electronics

Power Distribution Switches, Load Drivers Procurement Notes

Verify the complete part number including suffixes such as BUMA1 against official Infineon documentation to ensure correct package type and tape-and-reel specifications. Confirm that the specific revision matches project requirements. Cross-reference with authorized distributors to validate authenticity and traceability. Check for any end-of-life notices or recommended new designations prior to final procurement decisions.

Power Distribution Switches, Load Drivers Selection Notes

Select this component when a single-channel low-side switch with integrated diagnostics and high surge current handling is required. Ensure the application voltage does not exceed the 60 V rating. Consider the thermal management needs given the RDS(on) values at operating temperatures. Verify compatibility with the system's logic levels for gate drive signals. Evaluate if the latch-off protection behavior aligns with the system's fault recovery strategy.

Power Distribution Switches, Load Drivers Part Context

This device belongs to Infineon's Classic HITFET family, which provides cost-effective smart power solutions for automotive applications. It complements other low-side switches in the portfolio by offering a balance of performance, protection, and integration. The BTS133 series is widely used in body electronics where reliable switching of resistive and inductive loads is critical.

Power Distribution Switches, Load Drivers Replacement Considerations

Consult Infineon's official replacement guide for qualified alternatives. Direct substitutes may include other parts within the BTS133 series with compatible pinouts and electrical characteristics. Verify functional equivalence regarding protection thresholds and timing parameters before substitution.