Littelfuse 9245 Pushbutton Switch - Equivalent & Substitute Parts

Part Overview

The Littelfuse 9245 is a pushbutton switch with SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration, designed for panel mount rear installation. This component features a 20A DC current rating at 24V DC and employs a round plunger with rubber cap actuator and screw terminal termination. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

9245

Littelfuse Inc.In Stock: 13039245 Datasheet

Current PartRFQ

90030

Littelfuse/Commercial Vehicle ProductsIn Stock: 113390030 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Littelfuse 9245 is determined by the following critical parameters:

• Circuit configuration must remain SPST-NO
• Switch function must maintain Off-Mom (momentary) operation
• Mounting type must be Panel Mount, Rear
• Actuator type must be Round with Rubber Cap
• Termination style must be Screw Terminal
• RoHS3 compliance must be maintained

The substitute part 90030 satisfies all structural and functional compatibility requirements. Variations in current rating (35A vs. 20A) and voltage rating (12V vs. 24V) represent enhanced electrical specifications that do not prevent substitution in applications designed for the original 9245 specifications, provided system voltage and current requirements are verified against the actual application circuit.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 90030 is designated as the manufacturer-recommended substitute for the obsolete 9245 component. Both parts maintain identical circuit topology (SPST-NO), switch function (Off-Mom), mounting configuration (Panel Mount, Rear), and termination method (Screw Terminal). The 90030 carries active product status, ensuring ongoing availability and supply chain continuity.

Compliance certifications are equivalent: both components are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited moisture sensitivity). The 90030 is suitable for direct replacement in applications originally specified for the 9245, subject to verification that system operating voltage and current requirements fall within the substitute part's electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can the 90030 directly replace the 9245 in existing designs?

A: Yes. Both components share identical circuit configuration (SPST-NO), switch function (Off-Mom momentary), mounting type (Panel Mount, Rear), actuator style (Round with Rubber Cap), and termination method (Screw Terminal). The 90030 is the manufacturer-recommended substitute.

Q: What are the differences in electrical ratings between these parts?

A: The 9245 is rated for 20A DC at 24V DC. The 90030 is rated for 35A DC at 12V DC. Application circuits must be evaluated to confirm compatibility with the substitute part's voltage and current specifications.

Q: Why is the 9245 listed as obsolete?

A: The 9245 has been discontinued by the manufacturer. The 90030 represents the active replacement component and is recommended for all new designs and ongoing maintenance applications.

Q: Are compliance certifications identical between these parts?

A: Yes. Both the 9245 and 90030 are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (unlimited). Regulatory compliance is maintained with substitution.

Q: What is the difference between "Plunger" and "Button" actuator designations?

A: Both refer to round actuator styles with rubber caps. The terminology reflects minor mechanical variations in actuator geometry that do not affect functional compatibility for SPST-NO momentary switch applications.