KAJ07LGGT DIP Switch SPST Equivalent & Substitute Parts

Part Overview

The KAJ07LGGT is a 7-position surface mount DIP switch manufactured by E-Switch, featuring SPST (Single Pole Single Throw) circuit configuration with a 25mA current rating at 24VDC. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The part operates across an industrial temperature range of -40°C to 85°C with 2,000 mechanical and electrical life cycles.

Key Parameters

Parameter	Value
Circuit Configuration	SPST
Number of Positions	7
Current Rating	25mA
Voltage Rating	24VDC
Actuator Type	Slide (Standard)
Mounting Type	Surface Mount
Pitch	0.100" (2.54mm)
Termination Style	Gull Wing
Operating Temperature	-40°C to 85°C
Mechanical Life	2,000 Cycles
Electrical Life	2,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the KAJ07LGGT is determined by strict alignment with the following critical parameters:

Circuit configuration must remain SPST
Position count must equal 7
Current rating of substitute must equal or exceed 25mA
Voltage rating of substitute must equal or exceed 24VDC
Actuator type must be Slide (Standard)
Mounting type must be Surface Mount
Pitch must be 0.100" (2.54mm)
Termination style must be Gull Wing
Operating temperature range must encompass -40°C to 85°C
Mechanical and electrical life must meet or exceed 2,000 cycles
RoHS3 compliance required

The SD07H0SB from C&K meets all substitution criteria with enhanced electrical performance (100mA at 25VDC) and active product status, providing superior availability and long-term support compared to the obsolete KAJ07LGGT.

Parameter Comparison

Parameter	KAJ07LGGT (E-Switch)	SD07H0SB (C&K)	Compatibility
Circuit Configuration	SPST	SPST	Match
Number of Positions	7	7	Match
Current Rating	25mA	100mA	Substitute Exceeds
Voltage Rating	24VDC	25VDC	Substitute Exceeds
Actuator Type	Slide (Standard)	Slide (Standard)	Match
Actuator Level	Raised	Flush, Recessed	Different Profile
Contact Material	Copper Alloy	Beryllium Copper	Different Material
Contact Finish	Gold	Gold	Match
Height Above Board	0.163" (4.15mm)	0.170" (4.33mm)	Minor Difference
Mounting Type	Surface Mount	Surface Mount	Match
Termination Style	Gull Wing	Gull Wing	Match
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	Match
Operating Temperature	-40°C to 85°C	-40°C to 85°C	Match
Mechanical Life	2,000 Cycles	2,000 Cycles	Match
Electrical Life	2,000 Cycles	2,000 Cycles	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The SD07H0SB represents the qualified substitute for KAJ07LGGT applications. Selection rationale is based on the following factors:

Compliance & Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards.

Product Status: The KAJ07LGGT is classified as obsolete, creating supply chain risk. The SD07H0SB maintains active product status with documented inventory availability (1,256 pieces), supporting long-term production requirements.

Electrical Performance: The SD07H0SB provides enhanced current capacity (100mA versus 25mA) and voltage rating (25VDC versus 24VDC), delivering superior electrical margin for the same circuit topology.

Physical Compatibility: Both components share identical pitch (0.100"), termination style (Gull Wing), and mounting type (Surface Mount). Height variation (0.170" versus 0.163") represents a 0.007" difference within typical PCB layout tolerances.

Mechanical Durability: Equivalent mechanical and electrical life ratings (2,000 cycles) ensure consistent operational performance across the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can SD07H0SB directly replace KAJ07LGGT in existing designs?

A: Yes. Both components share identical circuit configuration (SPST), position count (7), pitch (0.100"), termination style (Gull Wing), and mounting type (Surface Mount). The SD07H0SB provides enhanced electrical ratings, making it functionally superior for the same application space.

Q: What is the significance of the actuator level difference (Raised vs. Flush, Recessed)?

A: Actuator level affects the physical profile above the PCB surface. The KAJ07LGGT features a raised actuator at 0.163" height, while the SD07H0SB uses a flush, recessed design at 0.170" height. This 0.007" difference requires verification against enclosure clearance specifications and operator accessibility requirements in the target application.

Q: Are there contact material differences that affect performance?

A: The KAJ07LGGT uses Copper Alloy contacts, while the SD07H0SB uses Beryllium Copper contacts. Both are gold-finished. Beryllium Copper provides enhanced electrical conductivity and wear resistance, supporting the higher current rating (100mA) of the substitute part.

Q: Does the SD07H0SB support washable applications?

A: Yes. The SD07H0SB is rated as washable with tape seal features, providing additional environmental protection compared to the KAJ07LGGT, which is not washable.

Q: What packaging considerations apply to the SD07H0SB?

A: The SD07H0SB is supplied in tube packaging, compared to the KAJ07LGGT standard packaging. Verify tube quantity and handling requirements align with production assembly processes.

Q: Are both parts suitable for the full -40°C to 85°C operating range?

A: Yes. Both the KAJ07LGGT and SD07H0SB maintain identical operating temperature specifications (-40°C to 85°C), ensuring thermal performance equivalence across industrial applications.

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