RI-46A Equivalent & Substitute Parts

Part Overview

The RI-46A is a glass body reed switch manufactured by Comus International, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a rated switching current of 1A and AC/DC switching voltage of 200V. This component is currently listed as Obsolete in terms of product status. The need to identify equivalent and substitute parts arises from the obsolescence designation, which necessitates sourcing alternatives from the active product line while maintaining functional compatibility with existing applications.

Substiute Parts

RI-46A

Comus InternationalIn Stock: 1109RI-46A Datasheet

Current PartRFQ

RI-46GP3035

Comus InternationalIn Stock: 9685RI-46GP3035 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The RI-46A can be substituted with the RI-46GP3035 based on strict electrical and mechanical compatibility criteria. Substitution is determined by the following key parameters:

Electrical Compatibility Requirements:

• Circuit configuration: Both parts are SPST-NO
• Switching current: Both rated at 1A (AC/DC)
• Switching voltage DC: Both rated at 200V DC (RI-46GP3035 is 250V AC, which exceeds AC requirement)
• Operate and release time specifications: Both 0.35 ms / 0.03 ms

Mechanical Compatibility Requirements:

• Mounting type: Both Through Hole
• Termination style: Both Axial
• Physical dimensions: Both 2.157" (54.79mm) overall length, 0.106" Dia x 0.807" L body size
• Operating temperature range: Both -55°C ~ 125°C

Regulatory Compliance:

• Both RoHS compliant
• Both REACH Unaffected status
• Both classified under ECCN EAR99 and HTSUS 8536.50.9065

Parameter Comparison

Engineering Selection Recommendations

The RI-46GP3035 serves as a direct substitute for the obsolete RI-46A based on both electrical and mechanical parameter alignment. Key considerations for selection:

Product Status: The RI-46A is designated Obsolete, whereas the RI-46GP3035 carries Active product status with 9593 units in stock, ensuring continued availability for procurement and design implementation.

Compliance Certifications: Both components maintain equivalent regulatory compliance standing. The RI-46GP3035 achieves ROHS3 Compliant status (an advancement over RoHS Compliant), providing enhanced environmental documentation. Both components remain REACH Unaffected, eliminating substance restriction concerns.

Electrical Margin: The RI-46GP3035 provides increased electrical ratings across three parameters:

• AC switching voltage rated at 250V (vs. 200V on RI-46A)
• Power rating increased to 40W (vs. 30W on RI-46A)
• DC carry current increased to 3A (vs. 2.5A on RI-46A)

These margin improvements ensure the substitute part accommodates equivalent or more demanding electrical loads within the same physical package.

Operating Range Difference: The RI-46GP3035 operates with a higher magnetic activation range (30 ~ 35AT vs. 15 ~ 28AT). This difference affects the trigger sensitivity but does not impact compatibility for applications where activation force is maintained within the specified range.

Frequently Asked Questions (FAQ)

Q: Can the RI-46GP3035 be used as a direct drop-in replacement for the RI-46A in existing circuit board designs?

A: Yes. Both components share identical through-hole axial termination, overall length of 54.79mm, and body dimensions of 2.70mm diameter × 20.50mm length. PCB layouts and component footprints designed for the RI-46A accept the RI-46GP3035 without modification.

Q: What is the primary difference between the RI-46A and RI-46GP3035?

A: The primary difference is the operate range specification: RI-46A operates at 15 ~ 28AT while RI-46GP3035 operates at 30 ~ 35AT. This designates the magnetic field strength (in Ampere-Turns) required to activate the reed switch. Both maintain identical switching current (1A), DC voltage (200V), timing characteristics (0.35ms operate / 0.03ms release), and physical dimensions.

Q: Are there temperature considerations when substituting the RI-46GP3035 for the RI-46A?

A: No. Both components share the identical operating temperature range of -55°C to 125°C.

Q: What is the status difference between RoHS Compliant and ROHS3 Compliant?

A: ROHS3 Compliant represents an updated certification standard that includes additional restricted substance requirements beyond the original RoHS Compliant specification. The RI-46GP3035's ROHS3 status provides enhanced environmental compliance documentation for applications requiring current regulatory alignment.

Q: Will the higher operate range (30 ~ 35AT) of the RI-46GP3035 affect my application?

A: The operate range determines the magnetic field strength needed to close the switch contacts. If your application's activation force is currently within the 30 ~ 35AT range, no impact occurs. If your original design utilized the RI-46A's lower range (15 ~ 28AT), you must verify that the required magnetic activation force aligns with the substitute part's specifications.

Q: What inventory and delivery advantage does the RI-46GP3035 provide?

A: The RI-46GP3035 maintains 9593 units in stock as an active product, whereas the RI-46A is listed as obsolete with limited procurement channels. This active status ensures supply chain continuity and shorter lead times for ongoing production and design implementations.