1. General Description & Purpose:

️· Type: Transient Voltage Suppressors (TVS)
️· Function: Protects circuits from voltage surges and transients.
️· Application: Suitable for unidirectional applications, and can be used with rectifier diodes for reverse protection.

2. Key Features/Specifications (from tables):

Part Number	VWM (Volts)	VRRM (Volts)	Ipp (Amps)	tr (Rise Time – ns)	td (Delay Time – ns)	Capacitance (pF)
HSMBJSAC5.0	5.0					30
HSMBJSAC10	10					30
HSMBJSAC18	18.0	20.0	6.8			30
HSMBJSAC22	22.0	24.4	5.8			30
HSMBJSAC26	26.0	28.9	4.1			30
HSMBJSAC36	36.0	40.0				30
HSMBJSAC45	45.0	50.0				30
HSMBJSAC50	50.0	55.5				30
HSMBJSAC75	75.0	83.3				30

️· VWM (Working Voltage): The maximum DC voltage that the TVS can safely handle. Ranges from 5.0V to 75V.
️· VRRM (Reverse Working Voltage): Indicates the maximum reverse voltage
️· Ipp (Peak Pulse Current): The maximum surge current that the TVS can withstand.
️· tr (Rise Time): How quickly the TVS responds to a voltage transient (lower is better for protection).
️· td (Delay Time): The time delay before the TVS starts clamping the voltage.
️· Capacitance: The capacitance of the device, typically 30 pF (picofarads).

3. Figures and Diagrams (Key Points):

️· Fig. 1: Peak Pulse Power vs. Pulse Time: Shows the relationship between pulse duration and maximum power dissipation.
️· Fig. 3: Derating Curve: Illustrates how the maximum power dissipation decreases as the ambient temperature increases.
️· Fig. 4: TVS with Internal Diode: Shows a basic TVS circuit.
️· Fig. 5: Unidirectional Configuration: Shows how to add a rectifier diode for reverse polarity protection.
️· Fig. 4 : Bidirectional Configuration Shows how two TVS devices can be used for bidirectional protection.

4. Schematic Applications Notes

️· Reverse Polarity Protection: A rectifier diode can be added in parallel with the TVS to protect against reverse polarity voltage surges.
️· Bidirectional Protection: Using two TVS devices in an anti-parallel configuration provides protection against voltage surges of either polarity.

5. Key Terms (Explained):

️· Transient Voltage Suppressor (TVS): A semiconductor device designed to protect circuits from voltage spikes.
️· Clamping: The action of limiting voltage to a safe level.
️· Avalanche Breakdown: The process by which the TVS conducts current to shunt excess voltage.

In Summary: This document provides specifications and application notes for a series of TVS diodes, useful for protecting electronic circuits from transient voltage events. The datasheet includes electrical characteristics, application circuits, and performance graphs.