TBU-PK075-100-WH

Overview

The Bourns TBU-PK075-100-WH is a dual-circuit, bi-directional transient blocking unit designed for board mount surge protection. It features an 80-ohm impedance and a 750V impulse voltage rating. The device utilizes internal switch technology to provide overcurrent and overvoltage protection in an 8-pin DFN (3x3 mm) package. Rated current is 100 mA, with operating temperatures ranging from -40°C to +85°C.

Feature Summary

• Dual-circuit bi-directional protection architecture
• Internal switch technology for high-speed response
• Integrated overcurrent and overvoltage suppression
• Compact surface-mount DFN packaging

Applications

• Subscriber Line Interface Circuit (SLIC) protection
• Telecommunications line interface modules
• Voice and data communication port protection

Procurement Notes

Verify the specific suffix WH against the manufacturer datasheet to confirm tape-and-reel packaging configuration. Ensure the 8-DFN footprint matches the target PCB layout. Confirm that the 750V impulse rating aligns with the system's surge requirements. Validate compliance with UL standards for the intended market. Check lead times as production cycles may vary.

Selection Notes

Select this component for applications requiring dual-channel protection on telecommunication lines. The bi-directional nature supports both transmit and receive paths. The 80-ohm impedance suits standard voice and data interfaces. Consider the 100 mA current rating for load compatibility. The internal switch technology offers fast reaction times compared to traditional varistors.

Part Context

This part belongs to the TBU® High-Speed Protectors family by Bourns. These devices replace traditional discrete protection components with integrated solutions. The PK series specifically targets subscriber line applications. The technology combines switching and clamping functions in a single semiconductor structure.

Replacement Considerations

Direct substitutes are not explicitly listed in public documentation. Evaluate other TBU-PK series variants for different impedance or voltage ratings. Cross-reference with generic dual-channel TVS arrays if integration space allows. Verify pinout compatibility before substitution.