KAJ02LGGT DIP Switch Equivalent & Substitute Parts

Part Overview

The KAJ02LGGT is a surface mount DIP switch manufactured by E-Switch, configured as a single-pole single-throw (SPST) switch with 2 positions. This component is rated for 25mA at 24VDC and features a standard slide actuator with gold-plated copper alloy contacts. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

KAJ02LGGT

E-SwitchIn Stock: 857KAJ02LGGT Datasheet

Current PartRFQ

SD02H0SB

C&KIn Stock: 2373SD02H0SB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The SD02H0SB from C&K qualifies as a direct substitute based on the following critical parameters:

• Circuit Configuration: Both parts are SPST with 2 positions
• Mounting Type: Both use surface mount with gull wing termination
• Pitch Spacing: Both maintain 0.100" (2.54mm) pitch, ensuring PCB footprint compatibility
• Operating Temperature: Both rated -40°C ~ 85°C
• Compliance: Both are ROHS3 compliant and REACH unaffected
• Current & Voltage Ratings: The SD02H0SB is rated 100mA at 25VDC, which exceeds the KAJ02LGGT requirements of 25mA at 24VDC, providing margin for electrical performance

Parameter Comparison

Engineering Selection Recommendations

The SD02H0SB is the qualified substitute for the obsolete KAJ02LGGT. Selection is based on:

• Functional Equivalence: Identical circuit topology (SPST, 2-position) and mechanical interface (surface mount, gull wing, 0.100" pitch)
• Electrical Margin: The SD02H0SB's 100mA/25VDC rating exceeds the original 25mA/24VDC specification, providing operational headroom
• Compliance Continuity: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment
• Active Availability: The SD02H0SB is in active production with documented inventory, eliminating obsolescence risk
• Thermal Compatibility: Identical operating temperature range (-40°C ~ 85°C) ensures thermal performance parity

Frequently Asked Questions (FAQ)

Q: Will the SD02H0SB fit the same PCB footprint as the KAJ02LGGT?

A: Yes. Both parts use surface mount gull wing termination with 0.100" (2.54mm) pitch spacing. The height difference (0.163" vs 0.170") is within typical PCB clearance tolerances and does not affect footprint compatibility.

Q: Are there electrical performance differences between these parts?

A: The SD02H0SB has higher current and voltage ratings (100mA/25VDC vs 25mA/24VDC). For applications requiring the original 25mA/24VDC specification, the SD02H0SB operates well within its electrical limits and introduces no functional risk.

Q: What is the difference between the raised and flush actuator levels?

A: The KAJ02LGGT has a raised actuator, while the SD02H0SB has a flush, recessed actuator. This affects user actuation feel and may impact mechanical accessibility depending on enclosure design. Verify actuator clearance in your specific application.

Q: Are both parts washable?

A: The KAJ02LGGT is not washable. The SD02H0SB is washable with tape seal features. If your manufacturing process includes aqueous cleaning, the SD02H0SB provides additional process compatibility.

Q: What contact materials are used?

A: The KAJ02LGGT uses copper alloy contacts with gold finish. The SD02H0SB uses beryllium copper contacts with gold finish. Both provide reliable electrical contact performance with equivalent gold plating.

Q: Is the SD02H0SB available in the same packaging as the original?

A: The KAJ02LGGT packaging is listed as standard. The SD02H0SB is supplied in tube packaging. Confirm tube packaging compatibility with your procurement and assembly processes.