KAJ07TAGT DIP Switch Equivalent & Substitute Parts

Part Overview

The KAJ07TAGT is a 7-position DIP switch manufactured by E-Switch, featuring SPST (Single Pole Single Throw) circuit configuration with a slide actuator. This component is rated for 25mA at 24VDC and is designed for through-hole mounting with PC pin termination. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Circuit Configuration	SPST
Number of Positions	7
Current Rating	25mA
Voltage Rating	24VDC
Actuator Type	Slide (Standard)
Mounting Type	Through Hole
Pitch	0.100" (2.54mm)
Contact Finish	Gold
Operating Temperature Range	-40°C ~ 85°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the KAJ07TAGT is determined by the following critical parameters:

Circuit Configuration: Must be SPST
Number of Positions: Must be 7
Mounting Type: Must be Through Hole with PC pin termination
Pitch: Must be 0.100" (2.54mm)
Actuator Type: Must be Slide (Standard) with Flush/Recessed level
Contact Finish: Must be Gold
Operating Temperature: Must support -40°C ~ 85°C range
Compliance: Must be ROHS3 Compliant

The substitute parts identified (209-7LPST and SD07H0B) meet these core functional and mechanical requirements. Variations in current rating (100mA vs. 25mA) and voltage rating (20VDC/25VDC vs. 24VDC) are acceptable within the substitution criteria, as the substitute parts provide equal or greater electrical capacity for the same application class.

Parameter Comparison

Parameter	KAJ07TAGT (Main)	209-7LPST (CTS)	SD07H0B (C&K)
Manufacturer	E-Switch	CTS Electrocomponents	C&K
Product Status	Obsolete	Active	Active
Circuit	SPST	SPST	SPST
Number of Positions	7	7	7
Current Rating	25mA	100mA	100mA
Voltage Rating	24VDC	20VDC	25VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Flush, Recessed	Flush, Recessed	Flush, Recessed
Contact Material	Copper Alloy	Beryllium Copper	Beryllium Copper
Contact Finish	Gold	Gold	Gold
Height Above Board	0.142" (3.60mm)	0.180" (4.57mm)	0.178" (4.52mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Washable	Yes	Yes	Yes
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Electrical Life	2,000 Cycles	2,000 Cycles	2,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both 209-7LPST and SD07H0B are active production parts suitable for replacing the obsolete KAJ07TAGT. Selection between these substitutes should be based on the following factors:

209-7LPST (CTS Electrocomponents): This part is rated for 20VDC maximum voltage. Use this substitute only in applications where the operating voltage does not exceed 20VDC. The higher current rating (100mA) provides additional margin over the original 25mA specification.

SD07H0B (C&K): This part is rated for 25VDC maximum voltage, matching the original part's voltage specification more closely. The 100mA current rating also exceeds the original requirement. This part is the preferred substitute for applications requiring the full 24VDC operating range.

Both parts maintain ROHS3 compliance, REACH unaffected status, and identical electrical life ratings. The slight height variation (0.178"-0.180" vs. 0.142") must be verified against PCB layout constraints and clearance requirements in the target application.

Frequently Asked Questions (FAQ)

Q: Can the 209-7LPST be used in a 24VDC circuit? A: The 209-7LPST is rated for 20VDC maximum. Operating at 24VDC exceeds the component's voltage specification and is not recommended. Use SD07H0B for 24VDC applications.

Q: Are the substitute parts pin-compatible with the KAJ07TAGT? A: Yes. Both substitute parts share the same 0.100" (2.54mm) pitch, through-hole PC pin termination, and 7-position configuration. PCB footprints designed for the KAJ07TAGT will accommodate both substitutes.

Q: What is the impact of the increased height above board? A: The substitute parts are 0.036"-0.038" taller than the original. Verify clearance above the PCB in the target assembly. This difference is typically not problematic in standard DIP switch applications but must be confirmed for space-constrained designs.

Q: Do the substitute parts have the same mechanical life as the original? A: The SD07H0B specifies 2,000 mechanical cycles, matching the original. The 209-7LPST does not specify mechanical life in the provided data. For applications requiring documented mechanical life specifications, SD07H0B is the preferred choice.

Q: Are both substitutes available in the same packaging as the original? A: The original KAJ07TAGT packaging is not specified in the provided data. Both substitutes are available in Tube packaging. Confirm packaging requirements for your procurement process.

Q: What is the difference in contact material between the parts? A: The original uses Copper Alloy contacts, while both substitutes use Beryllium Copper. Beryllium Copper provides superior contact reliability and is a standard upgrade in modern DIP switch designs.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message