KAJ09SGGT Equivalent & Substitute Parts

Part Overview

The KAJ09SGGT is a 9-position DIP switch manufactured by E-Switch, configured as a single-pole single-throw (SPST) surface mount component rated for 25mA at 24VDC. This part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity.

The KAJ09SGGT employs a slide actuator with flush/recessed positioning, gold-plated copper alloy contacts, and polyphenylene sulfide (PPS) housing. Its primary application involves low-voltage switching circuits requiring discrete position selection in compact surface mount configurations.

Substiute Parts

KAJ09SGGT

E-SwitchIn Stock: 1137KAJ09SGGT Datasheet

Current PartRFQ

DMR09T

APEM Inc.In Stock: 849DMR09T Datasheet

MFR RecommendedRFQ

DMR09TTR

APEM Inc.In Stock: 775DMR09TTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KAJ09SGGT is determined by strict electrical and mechanical parameter alignment. The following criteria establish functional equivalence:

Mandatory Matching Parameters:

• Circuit configuration: SPST
• Number of positions: 9
• Current rating: 25mA minimum
• Voltage rating: 24VDC minimum
• Actuator type: Slide (Standard)
• Actuator level: Flush, Recessed
• Contact material: Copper Alloy
• Contact finish: Gold
• Mounting type: Surface Mount
• Termination style: Gull Wing
• Pitch: 0.100" (2.54mm)
• Mechanical life: 2,000 Cycles minimum
• Electrical life: 2,000 Cycles minimum

Allowable Variations:

• Operating temperature range: May extend beyond the original specification
• Body material composition: PPS with or without glass filling
• Height above board: Minor dimensional tolerance
• Length: Minor dimensional tolerance
• Packaging format: Tube or Tape & Reel
• Washable feature: May be present in substitute

The substitute parts DMR09T and DMR09TTR, both manufactured by APEM Inc., satisfy all mandatory matching parameters and are therefore qualified as direct functional equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both DMR09T and DMR09TTR are active production components manufactured by APEM Inc. and represent direct functional replacements for the obsolete KAJ09SGGT. Selection between these two substitutes depends on procurement and assembly requirements:

DMR09T (Tube Packaging): Suitable for lower-volume applications, prototype builds, and manual assembly processes where individual component handling is standard practice.

DMR09TTR (Tape & Reel Packaging): Appropriate for high-volume production environments utilizing automated pick-and-place assembly equipment and continuous manufacturing workflows.

Both substitutes maintain full compliance with ROHS3 and REACH regulatory requirements. The minor dimensional variations in height (0.006" difference) and length (0.037" difference) fall within standard PCB layout tolerances and do not impact functional performance or mechanical fit in standard DIP switch footprints.

The operating temperature range of the APEM substitutes (-20°C ~ 85°C) is narrower than the original KAJ09SGGT (-40°C ~ 85°C). Applications requiring operation below -20°C must retain the original E-Switch component or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Are DMR09T and DMR09TTR electrically identical to the KAJ09SGGT?

A: Yes. Both substitutes match all mandatory electrical parameters: SPST circuit configuration, 9-position selection, 25mA current rating, 24VDC voltage rating, gold-plated copper alloy contacts, and 2,000-cycle mechanical and electrical life ratings.

Q: What is the difference between DMR09T and DMR09TTR?

A: The primary difference is packaging format. DMR09T is supplied in tube packaging for manual handling and lower-volume applications. DMR09TTR is supplied in tape and reel format for automated assembly processes and high-volume production. Both components are electrically and mechanically identical.

Q: Can I use these substitutes in applications requiring -40°C operation?

A: No. The APEM substitutes are rated for -20°C minimum operating temperature, whereas the original KAJ09SGGT supports -40°C. Applications requiring -40°C operation must use the original component or identify alternative solutions with extended low-temperature specifications.

Q: Are there dimensional compatibility concerns with the substitute parts?

A: The APEM substitutes are 0.006" taller and 0.037" longer than the original KAJ09SGGT. These variations are within standard PCB layout tolerances for DIP switch footprints and do not impact mechanical fit or functional performance in standard applications.

Q: Do the substitute parts require different PCB footprints?

A: No. Both DMR09T and DMR09TTR use identical gull wing termination style, 0.100" (2.54mm) pitch, and surface mount configuration as the KAJ09SGGT. Standard DIP switch footprints accommodate these substitutes without modification.

Q: Are the substitute parts RoHS and REACH compliant?

A: Yes. Both DMR09T and DMR09TTR are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original KAJ09SGGT.

Q: What is the washable feature on the substitute parts?

A: The APEM substitutes include a tape seal washable feature, allowing the assembled PCB to undergo aqueous cleaning processes without moisture ingress into the switch mechanism. The original KAJ09SGGT does not include this feature.