KAJ12SGGT Equivalent & Substitute Parts

Part Overview

The KAJ12SGGT is a 12-position surface mount DIP slide switch manufactured by E-Switch, rated for 25mA at 24VDC with SPST (Single Pole Single Throw) circuit configuration. This component features a flush, recessed slide actuator with gold-plated copper alloy contacts and is housed in polyphenylene sulfide (PPS) material. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Circuit Type	SPST
Number of Positions	12
Current Rating	25mA
Voltage Rating	24VDC
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)
Body Material	Polyphenylene Sulfide (PPS)
Mechanical Life	2,000 Cycles
Electrical Life	2,000 Cycles
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the KAJ12SGGT is determined by strict equivalence across the following critical parameters:

Circuit configuration (SPST)
Position count (12)
Electrical ratings (25mA, 24VDC)
Actuator type and level (Slide, Flush/Recessed)
Contact material and finish (Copper Alloy, Gold)
Mounting technology (Surface Mount)
Termination style (Gull Wing)
Pitch spacing (0.100" / 2.54mm)
Lifecycle ratings (2,000 mechanical and electrical cycles)
Regulatory compliance (ROHS3, REACH Unaffected)

The DMR12TTR from APEM Inc. meets all these substitution criteria and is classified as an active product, providing continuity for applications currently using the obsolete KAJ12SGGT.

Parameter Comparison

Parameter	KAJ12SGGT (E-Switch)	DMR12TTR (APEM Inc.)
Circuit Type	SPST	SPST
Number of Positions	12	12
Current Rating (Amps)	25mA	25mA
Voltage Rating	24VDC	24VDC
Actuator Type	Slide (Standard)	Slide (Standard)
Actuator Level	Flush, Recessed	Flush, Recessed
Contact Material	Copper Alloy	Copper Alloy
Contact Finish	Gold	Gold
Height Above Board	0.140" (4.65mm)	0.146" (3.70mm)
Mounting Type	Surface Mount	Surface Mount
Termination Style	Gull Wing	Gull Wing
Pitch	0.100" (2.54mm)	0.100" (2.54mm)
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS), Glass Filled
Length	1.200" (30.48mm)	1.237" (31.42mm)
Mechanical Life	2,000 Cycles	2,000 Cycles
Electrical Life	2,000 Cycles	2,000 Cycles
Operating Temperature	-40°C ~ 85°C	-20°C ~ 85°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Obsolete	Active

Engineering Selection Recommendations

The DMR12TTR is the designated substitute for the obsolete KAJ12SGGT. Both components maintain identical electrical and mechanical specifications across all critical parameters, including circuit configuration, position count, current and voltage ratings, actuator characteristics, and contact properties. Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment.

The DMR12TTR offers the advantage of active product status, ensuring ongoing availability and manufacturer support. Minor dimensional variations exist: the DMR12TTR exhibits a slightly higher profile (0.146" versus 0.140") and greater length (1.237" versus 1.200"), with a glass-filled PPS body composition. The operating temperature range of the DMR12TTR is -20°C to 85°C, compared to -40°C to 85°C for the KAJ12SGGT; applications requiring operation below -20°C require specific evaluation. The DMR12TTR is supplied in Tape & Reel packaging with tape seal features, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the DMR12TTR directly replace the KAJ12SGGT in existing designs?

A: Yes, the DMR12TTR meets all electrical and mechanical substitution criteria. Minor dimensional differences (height and length) should be verified against PCB layout constraints. The operating temperature range difference (-20°C minimum versus -40°C) applies only to applications requiring sub-zero operation.

Q: What are the key differences between these parts?

A: The primary differences are product status (active versus obsolete), body material composition (glass-filled PPS versus standard PPS), operating temperature range, and packaging format. Electrical and mechanical performance characteristics remain equivalent.

Q: Does the glass-filled PPS body material affect performance?

A: Glass-filled PPS provides enhanced mechanical and thermal properties. This material change does not compromise electrical performance or regulatory compliance for the specified application parameters.

Q: Are there packaging considerations for the DMR12TTR?

A: The DMR12TTR is supplied in Tape & Reel format with tape seal features, optimized for automated pick-and-place assembly. The KAJ12SGGT packaging format was not specified in available data.

Q: What is the significance of the height and length differences?

A: The DMR12TTR is 0.006" taller and 0.037" longer than the KAJ12SGGT. PCB layout and enclosure clearance must accommodate these dimensional variations to ensure proper fit and function.

Q: Are both parts compliant with current regulatory standards?

A: Yes, both the KAJ12SGGT and DMR12TTR are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

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