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Product Detailed Parameters
- Description：SURGE SUPP TBU 50MA 250VIMP SMD
- Series：TBU®
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR)
- Voltage - Clamping：250V
- Technology：Internal Switch
- Number of Circuits：1
- Applications：General Purpose
- Mounting Type：Surface Mount
- Package / Case：2-VDFN Exposed Pad
- Supplier Device Package：2-DFN (2.5x 5)
- Grade：-
- Qualification：-
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Overview
The Bourns TBU-KE025-050-WH is a board-mount surge protector from the TBU-KE series. It features a single unidirectional design with a voltage rating of 250 V and a current rating of 50 mA. The component utilizes an SMD/SMT termination type within a DFN package. It operates within a temperature range of -40°C to +85°C. The device provides overcurrent and overvoltage protection, functioning as a high-speed protector.
Feature Summary
- Provides simultaneous overcurrent and overvoltage protection for sensitive circuits
- Features high-speed tripping capability for rapid response to transient events
- Designed as a single unidirectional device for specific polarity applications
Applications
- General purpose circuit protection
- Surge suppression in electronic systems
Procurement Notes
Verify availability status before procurement as this specific part number may be discontinued or subject to limited distribution. Confirm that the single unidirectional configuration aligns with the target circuit's polarity requirements. Ensure the operating temperature range of -40°C to +85°C meets the environmental specifications of the end application.
Selection Notes
Select this component when unidirectional protection is required for low-voltage lines up to 250 V. The 50 mA rating defines the holding current threshold; ensure normal operating currents remain below this limit to prevent nuisance tripping. The DFN package suits space-constrained PCB layouts requiring surface mount assembly.
Part Context
This device belongs to the TBU-KE series of high-speed protectors manufactured by Bourns. These components are categorized under surge suppression ICs and general-purpose circuit protection. The series is designed to offer robust defense against electrical transients while maintaining a compact footprint suitable for modern electronics.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative devices based on matching voltage, current ratings, and unidirectional functionality.
