KSR253G Equivalent & Substitute Parts

Part Overview

The KSR253G is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.01A at 32VDC. This surface mount component features top actuation, a 2.50mm actuator height, and is designed for applications requiring momentary switching functionality. The KSR253G is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing production and maintenance applications. The primary substitute maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

KSR253G

C&KIn Stock: 886KSR253G Datasheet

Current PartRFQ

KSR253GLFG

C&KIn Stock: 40854KSR253GLFG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSR253G with the KSR253GLFG is based on strict equivalence across all critical electrical and mechanical parameters. Both parts share identical specifications for circuit configuration (SPST-NO), contact rating (0.01A @ 32VDC), mounting type (Surface Mount), actuator dimensions (2.50mm height, top actuated), physical outline (6.00mm x 3.80mm), operating force (450gf), switch travel (0.50mm), temperature range (-40°C ~ 125°C), mechanical life (100,000 cycles), and termination style (Gull Wing). The substitution is valid because all parameters that determine functional and mechanical compatibility remain unchanged between the main part and substitute.

Parameter Comparison

Engineering Selection Recommendations

The KSR253GLFG is the direct functional equivalent of the KSR253G. Selection of the KSR253GLFG is supported by three primary factors: (1) complete electrical and mechanical parameter equivalence across all specified characteristics, (2) active product status ensuring ongoing availability and supply chain continuity, and (3) ROHS3 compliance status compared to the non-compliant status of the obsolete KSR253G. For new designs or production transitions, the KSR253GLFG provides equivalent performance with enhanced regulatory compliance. Both parts maintain identical moisture sensitivity level (MSL 1), REACH unaffected status, and ECCN/HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the KSR253GLFG be used as a direct replacement for the KSR253G in existing designs?

A: Yes. The KSR253GLFG maintains identical electrical specifications (0.01A @ 32VDC, SPST-NO), mechanical dimensions (6.00mm x 3.80mm outline, 2.50mm actuator height), operating characteristics (450gf operating force, 0.50mm travel, 100,000 cycle life), and environmental ratings (-40°C ~ 125°C). PCB layout and schematic integration require no modification.

Q: What is the difference between KSR253G and KSR253GLFG packaging?

A: The KSR253G is supplied in standard packaging, while the KSR253GLFG is available in Cut Tape (CT) and Digi-Reel® packaging formats. Both use identical Gull Wing termination style and surface mount configuration. Packaging selection depends on assembly process requirements and volume specifications.

Q: Why is the KSR253G listed as obsolete?

A: The KSR253G has been superseded by the KSR253GLFG within the C&K product portfolio. The KSR253GLFG offers the same functional performance with improved RoHS3 compliance status and active manufacturing support.

Q: Are there any compliance differences between these parts?

A: The KSR253GLFG is ROHS3 compliant, while the KSR253G is RoHS non-compliant. Both parts maintain identical REACH unaffected status, MSL 1 rating, and EAR99 ECCN classification. For applications subject to RoHS requirements, the KSR253GLFG is the appropriate selection.

Q: What inventory considerations apply to these parts?

A: The KSR253G has limited inventory (814 Pcs) with obsolete status. The KSR253GLFG maintains active production status with significantly higher inventory availability (40,843 Pcs). For ongoing production requirements, sourcing from the KSR253GLFG is recommended to ensure supply continuity.