KAT1108E DIP Switch Equivalent & Substitute Parts

Part Overview

The KAT1108E is an 8-position DIP switch manufactured by E-Switch, configured as a Single Pole Double Throw (SPDT) switch with a slide actuator. This component is rated for 25mA at 24VDC and features through-hole PC pin termination with a 0.100" pitch. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

KAT1108E

E-SwitchIn Stock: 875KAT1108E Datasheet

Current PartRFQ

KAD08LHGT

E-SwitchIn Stock: 1443KAD08LHGT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KAT1108E requires evaluation of the following critical parameters:

Circuit Configuration: The KAT1108E operates as SPDT (Single Pole Double Throw). Substitute parts must maintain electrical functionality within the application context.

Electrical Ratings: The original part is rated for 25mA at 24VDC. Substitute components must meet or exceed these electrical specifications to ensure safe operation.

Physical Compatibility: Both mounting type (through hole) and termination style (PC pin) must match to ensure direct board-level compatibility. Pitch spacing of 0.100" (2.54mm) is a critical mechanical parameter.

Position Count: The 8-position configuration is a defining characteristic of this DIP switch family.

Actuator Type: Slide actuator with raised level must be maintained for consistent user interface and mechanical engagement.

Lifecycle Compliance: RoHS3 compliance and MSL rating of 1 establish baseline environmental and handling requirements.

The KAD08LHGT is identified as a manufacturer-recommended substitute based on compatibility across these core parameters.

Parameter Comparison

Engineering Selection Recommendations

The KAD08LHGT is the manufacturer-recommended substitute for the obsolete KAT1108E. Both components are manufactured by E-Switch and maintain identical mechanical compatibility through matching pitch, mounting type, and termination style.

The KAD08LHGT carries Active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain ROHS3 compliance and MSL rating of 1, satisfying environmental and handling requirements.

The KAD08LHGT provides enhanced electrical performance with 100mA current rating and 50VDC voltage rating, exceeding the original KAT1108E specifications of 25mA at 24VDC. This increased electrical capacity ensures the substitute operates safely in the original application context.

Physical dimensions differ slightly: the KAD08LHGT is more compact with reduced height above board (0.146" versus 0.264") and shorter overall length (0.846" versus 0.957"). These dimensional reductions may provide board layout advantages in space-constrained applications.

The circuit configuration differs from SPDT to SPST. Application-level compatibility must be evaluated based on specific switching requirements within the target circuit.

Frequently Asked Questions (FAQ)

Q: Can the KAD08LHGT directly replace the KAT1108E on existing PCBs?

A: Physical board-level compatibility is maintained. Both components share identical pitch (0.100"), mounting type (through hole), and termination style (PC pin). The reduced height and length of the KAD08LHGT may provide additional clearance in confined spaces. Circuit configuration differences (SPDT versus SPST) require functional evaluation within the specific application.

Q: What are the key differences between these two parts?

A: The primary differences are circuit configuration (SPDT versus SPST), electrical ratings (25mA/24VDC versus 100mA/50VDC), physical dimensions (height and length), and product status (obsolete versus active). The KAD08LHGT provides higher electrical capacity and active product status.

Q: Are both parts RoHS compliant?

A: Yes. Both the KAT1108E and KAD08LHGT are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level).

Q: What is the significance of the circuit configuration difference?

A: The KAT1108E is SPDT (Single Pole Double Throw), providing two switching positions per pole. The KAD08LHGT is SPST (Single Pole Single Throw), providing one switching position per pole. Application compatibility depends on the specific switching logic required in the target circuit.

Q: Is the KAD08LHGT available in the same packaging?

A: Both components are supplied in tube packaging, maintaining consistency in handling and storage requirements.