KSR231G Equivalent & Substitute Parts

Part Overview

The KSR231G is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.05A at 32VDC. This surface mount component features top actuation, gull wing termination, and is designed for applications requiring momentary switching functionality. The KSR231G is currently listed as obsolete, making identification of functionally equivalent alternatives essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and compatible mechanical dimensions to ensure direct replacement capability.

Substiute Parts

KSR231G

C&KIn Stock: 3769KSR231G Datasheet

Current PartRFQ

KSR231GLFS

C&KIn Stock: 70216KSR231GLFS Datasheet

DirectRFQ

1825086-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 7771825086-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSR231G is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration (SPST-NO)
• Contact rating (0.05A @ 32VDC)
• Switch function (Off-Mom momentary operation)
• Mounting type (Surface Mount)
• Actuator orientation (Top Actuated)
• Termination style (Gull Wing)
• Operating temperature range (-40°C ~ 85°C)
• Mechanical life (100,000 Cycles minimum)

Allowable Variations:

• Packaging format (bulk, tape & reel, cut tape)
• Product status (active vs. obsolete)
• RoHS compliance status
• Minor outline dimension tolerances within PCB footprint compatibility
• Actuator material composition (rubber vs. silicone rubber)
• Operating force variance within functional range
• Switch travel distance within acceptable actuation parameters

Identified substitutes maintain electrical equivalence and mechanical compatibility with the KSR231G while offering improved availability and compliance status.

Parameter Comparison

Engineering Selection Recommendations

KSR231GLFS (Direct Substitute - Recommended Primary Choice)

The KSR231GLFS is the direct functional equivalent of the KSR231G, manufactured by C&K within the same KSR series. This part maintains identical electrical specifications (0.05A @ 32VDC SPST-NO), mechanical dimensions (6.00mm x 3.80mm), actuator height (2.50mm), and operating characteristics (300gf operating force, 0.35mm switch travel, 100,000 cycle mechanical life). The KSR231GLFS is currently in active production status with significantly higher inventory availability (70,200 units). The primary distinction is RoHS3 compliance, making this substitute suitable for applications subject to environmental regulations. Packaging is supplied in Tape & Reel format, standard for production environments.

1825086-2 (Similar Substitute - Secondary Option)

The 1825086-2 manufactured by TE Connectivity ALCOSWITCH Switches provides functional equivalence with minor parameter variations. This part maintains the critical electrical specification (0.05A @ 32VDC SPST-NO) and core mechanical compatibility (surface mount, top actuated, gull wing termination, 2.50mm actuator height). Dimensional variance exists in outline (6.00mm x 4.00mm vs. 6.00mm x 3.80mm), operating force (260gf vs. 300gf), and switch travel (0.50mm vs. 0.35mm). These variations remain within acceptable functional parameters for momentary switch applications. The 1825086-2 is active production status with ROHS3 compliance. This substitute is suitable when KSR231GLFS availability is constrained, provided PCB layout accommodates the 0.20mm width increase and application requirements accept the reduced operating force and increased switch travel.

Frequently Asked Questions (FAQ)

Q: Can KSR231GLFS directly replace KSR231G without PCB modification?

A: Yes. The KSR231GLFS maintains identical outline dimensions (6.00mm x 3.80mm), actuator height (2.50mm), and gull wing termination, ensuring direct footprint compatibility. No PCB layout changes are required.

Q: What is the significance of the RoHS compliance difference between KSR231G and KSR231GLFS?

A: The KSR231G is RoHS non-compliant, while KSR231GLFS is ROHS3 compliant. For applications subject to EU environmental directives or customer RoHS requirements, KSR231GLFS is the appropriate selection. Both parts are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Is 1825086-2 suitable as a direct replacement for KSR231G?

A: The 1825086-2 provides functional equivalence with documented parameter variations. The outline dimension increase (6.00mm x 4.00mm vs. 6.00mm x 3.80mm) requires PCB footprint verification. The reduced operating force (260gf vs. 300gf) and increased switch travel (0.50mm vs. 0.35mm) remain within acceptable ranges for momentary switching but may affect tactile feedback characteristics. Application-specific testing is recommended if this substitute is selected.

Q: What packaging formats are available for these substitutes?

A: KSR231GLFS is supplied in Tape & Reel (TR) format, standard for automated assembly. The 1825086-2 is supplied in Cut Tape (CT) format. Both formats are compatible with standard pick-and-place equipment. The original KSR231G was supplied in bulk packaging.

Q: Are all three parts rated for the same operating temperature range?

A: Yes. KSR231G, KSR231GLFS, and 1825086-2 all operate across -40°C to 85°C, ensuring thermal compatibility across the specified range.

Q: What is the mechanical life expectancy for these switches?

A: All three parts are rated for 100,000 mechanical cycles, providing equivalent durability for momentary switch applications.

Q: How do the electrical specifications compare across all three parts?

A: All three parts maintain identical electrical specifications: SPST-NO circuit configuration, 0.05A @ 32VDC contact rating, and Off-Mom (momentary) switch function. Electrical substitution is direct and unconditional.