KAR04LAST Equivalent & Substitute Parts

Part Overview

The KAR04LAST is a 4-position DIP switch manufactured by E-Switch, featuring a piano actuator with SPST circuit configuration rated for 25mA at 24VDC. This component is designed for through-hole, right-angle mounting applications with PC pin termination. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

KAR04LAST

E-SwitchIn Stock: 1007KAR04LAST Datasheet

Current PartRFQ

KAP1104ET

E-SwitchIn Stock: 939KAP1104ET Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The KAP1104ET qualifies as a direct substitute for the KAR04LAST based on the following critical parameters:

• Circuit Configuration: Both parts are SPST with 4 positions
• Electrical Ratings: Identical current (25mA) and voltage (24VDC) specifications
• Actuator Type: Both feature piano actuators with raised levels
• Mounting and Termination: Matching through-hole, right-angle configuration with PC pin termination
• Pitch Spacing: Both maintain 0.100" (2.54mm) full pitch
• Washability: Both parts are washable
• Compliance: Both are ROHS3 compliant and REACH unaffected

The KAP1104ET represents an active product from the same manufacturer, providing continuity for applications previously using the obsolete KAR04LAST.

Parameter Comparison

Engineering Selection Recommendations

The KAP1104ET is the appropriate substitute for the obsolete KAR04LAST. Both components meet identical electrical and mechanical specifications for SPST 4-position DIP switch applications at 24VDC, 25mA. The KAP1104ET offers the advantage of active product status, ensuring ongoing availability and manufacturing support. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements. The KAP1104ET provides an extended lower operating temperature limit (-40°C versus -30°C), offering improved performance in cold environments. Physical dimensions differ slightly; the KAP1104ET has a greater height above board (0.402" versus 0.287") and different body material composition, which should be verified against PCB layout constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can KAP1104ET directly replace KAR04LAST in existing designs? A: Yes. Both parts share identical circuit configuration (SPST), position count (4), electrical ratings (25mA, 24VDC), actuator type (piano), mounting style (through-hole, right-angle), and termination (PC pin). Verification of PCB layout clearance is required due to dimensional differences in height above board.

Q: What are the key differences between these parts? A: The primary differences are product status (KAR04LAST is obsolete; KAP1104ET is active), operating temperature range (KAP1104ET extends to -40°C), contact material (copper alloy versus phosphor bronze), body material (PPS versus glass-filled PBT), and physical height (0.287" versus 0.402"). Electrical and mechanical performance remain equivalent.

Q: Are there compliance or certification concerns with substitution? A: No. Both parts are ROHS3 compliant and REACH unaffected. MSL ratings are identical at Level 1 (Unlimited). No additional compliance verification is required.

Q: Does the difference in height above board affect compatibility? A: Physical clearance must be verified. The KAP1104ET is 0.115" taller than the KAR04LAST. Confirm available PCB space and component proximity before implementation.

Q: What is the pitch specification, and is it consistent? A: Both parts maintain 0.100" (2.54mm) full pitch spacing, ensuring consistent footprint compatibility on standard DIP switch PCB layouts.