LT4363IS-2#PBF

Overview

The LT4363IS-2#PBF is a board mount surge protector manufactured by Analog Devices Inc. It operates within a voltage range of 4 VDC to 80 VDC and features an SMD/SMT termination type in an SOIC-16 package. The device has a current rating of 1.2 mA and functions across a temperature range from -40°C to +85°C. Physical dimensions include a length of 10 mm, width of 3.99 mm, and height of 1.75 mm. It weighs 638 mg and is supplied in tube packaging.

Feature Summary

• Provides high-voltage surge protection with integrated current limiting capabilities
• Automatically retries operation after cool-down delay following fault conditions
• Inhibits retry if overvoltage exceeds specific threshold levels

Applications

• Automotive systems
• Avionics equipment
• Industrial control circuits

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm RoHS compliance status via official documentation. Check for product change notifications affecting specifications. Ensure storage conditions remain within specified limits to maintain integrity. Validate package markings against datasheet requirements before integration.

Selection Notes

Select this variant for applications requiring SOIC-16 footprint compatibility. Consider the -40°C to +85°C operating range for standard industrial environments. Evaluate current limiting needs against the 1.2 mA rating. Compare physical dimensions against PCB layout constraints. Review automatic retry behavior suitability for system recovery protocols.

Part Context

Part of the LT4363 series of high-voltage surge stoppers with current limit. Designed to protect downstream components from input transients. Offers robust performance in demanding electrical environments. Integrates internal MOSFET for efficient power path management. Provides reliable protection against sustained overvoltage and overcurrent events.

Replacement Considerations

LT4363IMS-2#PBF offers MSOP-12 package alternative. LT4363MPMS-2#PBF provides military grade temperature range. LT4363MPS-2#PBF matches SOIC-16 but extends temperature to -55°C/+125°C. Verify pinout and thermal characteristics when substituting.

FAQ

How does the LT4363IS-2#PBF handle overvoltage conditions?

It turns off after a timer delay during sustained overvoltage and automatically retries after a cool-down delay.

What happens if the output overvoltage exceeds 1.275V?

The automatic retry function is inhibited to prevent immediate re-engagement under hazardous conditions.