Equivalent & Substitute Parts Reference for APEM Inc. 18535CD Pushbutton Switch

Part Overview

The APEM Inc. 18535CD is an active pushbutton switch, categorized as SPDT (Single Pole Double Throw) and designed for standard panel mount, rear installation. It is favored for its tactile feedback and electrical life of 60,000 cycles, supporting applications requiring precise control and panel integration. Engineers may seek alternative models due to supply constraints, compliance requirements, or inventory availability. Identifying substitutes is essential to maintain system function and regulatory conformity while ensuring uninterrupted project timelines.

Substiute Parts

18535CD

APEM Inc.In Stock: 108918535CD Datasheet

Current PartRFQ

8121SHZGE

C&KIn Stock: 6658121SHZGE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are selected strictly based on these parameters:

• Circuit configuration (SPDT)
• Switch function (On-Mom)
• Mounting type (Panel Mount, Rear)
• Electrical and mechanical ratings (current, voltage, electrical life)
• Actuator type and marking
• Termination style
• Panel cutout dimensions
• Environmental ratings (operating temperature, compliance status) Only parts matching these explicit attributes are considered valid substitutes.

Parameter Comparison

Engineering Selection Recommendations

Both 18535CD and 8121SHZGE are "Active" status parts and compliant with RoHS3 and ECCN EAR99. MSL ratings for both are 1 (Unlimited), confirming suitability for standard handling processes. 18535CD is REACH Unaffected, while 8121SHZGE is REACH Affected; selection should consider application-specific REACH requirements. Electrical life is identical at 60,000 cycles for both parts.

Frequently Asked Questions (FAQ)

Q1: What parameters are essential for substituting a pushbutton switch in this category?
Key substitution criteria include matching mounting type, circuit configuration, switch function, actuator type, panel cutout dimensions, ratings (current and voltage), electrical life cycles, compliance status, and termination style.

Q2: How does slight variation in panel cutout dimensions affect compatibility?
Substitute selection relies on the provided panel cutout values. 18535CD is specified at 6.50mm diameter; 8121SHZGE is specified at 6.35mm diameter. Only the dimensions given may be used when confirming fit for mechanical compatibility.

Q3: What compliance and certification fields should be verified when selecting a substitute?
RoHS3 status, REACH status, ECCN, and MSL ratings are key for regulatory and handling compatibility. Use only the provided values when evaluating substitutes.

Q4: Are environmental ratings like operating temperature critical for substitution?
Operating temperature ranges must be compared directly. 18535CD specifies -30°C ~ 65°C; 8121SHZGE specifies -30°C ~ 75°C, both within similar operating ranges per the input parameters.

Q5: How should actuator marking and type be evaluated for direct substitution?
Both parts declare actuator type as "Round, Plunger" and marking as "No Marking." Only these definitions may be used for confirming actuation compatibility.

Q6: Is mechanical or electrical life a valid substitution criterion?
Yes, both parts specify an electrical life of 60,000 cycles, which must be matched to ensure intended durability within system specifications.