Littelfuse 59090-00-02-C Magnetic Reed Switch Equivalent & Substitute Parts

Part Overview

The Littelfuse 59090-00-02-C is a magnetic reed switch sensor with SPST-NC (Single Pole Single Throw - Normally Closed) output configuration, featuring a ferrous vane actuator and connector-style termination. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The primary distinction between the main part and available substitutes lies in the termination style: the 59090-00-02-C uses connector termination, while alternatives employ wire leads. This difference affects integration method but does not alter the core magnetic sensing functionality.

Substiute Parts

59090-00-02-C

Littelfuse Inc.In Stock: 89059090-00-02-C Datasheet

Current PartRFQ

59090-00-02-A

Littelfuse Inc.In Stock: 70659090-00-02-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 59090-00-02-C is determined by the following critical parameters:

• Output Type: Must be SPST-NC to maintain circuit behavior
• Actuator Material: Must be Ferrous Vane for magnetic response characteristics
• Operating Temperature Range: Must support -40°C to 105°C minimum
• Package Type: Must be Module configuration
• RoHS Compliance: Must maintain ROHS3 Compliant status

The 59090-00-02-A qualifies as a direct substitute based on these parameters. The primary difference—termination style (connector versus wire leads)—does not affect electrical functionality and represents a design integration choice rather than a functional limitation.

Parameter Comparison

Engineering Selection Recommendations

The 59090-00-02-A is the qualified substitute for the obsolete 59090-00-02-C. Both components maintain identical electrical specifications, operating parameters, and compliance certifications. The 59090-00-02-A carries Active product status, ensuring continued availability and manufacturing support.

Selection between these parts depends solely on integration requirements: connector termination (59090-00-02-C) versus wire lead termination (59090-00-02-A). The wire lead configuration of the substitute part provides flexibility for direct soldering or custom harness integration, while the connector version requires compatible mating connectors.

Both parts satisfy ROHS3 compliance and MSL Level 1 requirements, making them suitable for standard industrial and commercial applications within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 59090-00-02-A directly replace the 59090-00-02-C in existing designs?

A: Electrical functionality is identical. Physical integration differs due to termination style. Connector-based designs require adapter solutions or harness modification to accommodate wire leads.

Q: What is the significance of the SPST-NC output configuration?

A: SPST-NC (Single Pole Single Throw - Normally Closed) means the switch contacts remain closed in the absence of magnetic field and open when the ferrous vane actuator is magnetically engaged. This configuration is critical for fail-safe applications.

Q: Are there temperature or environmental limitations when substituting?

A: Both parts operate identically across the -40°C to 105°C range. MSL Level 1 (Unlimited) indicates no moisture sensitivity restrictions for standard storage and handling.

Q: Why is the 59090-00-02-C listed as obsolete?

A: Obsolescence reflects manufacturing discontinuation. The 59090-00-02-A remains in active production, providing a direct functional alternative for new procurement and system redesigns.

Q: What compliance certifications apply to both parts?

A: Both components are ROHS3 Compliant. The 59090-00-02-A additionally carries REACH Unaffected status. Both are classified under ECCN EAR99 and HTSUS 8543.70.9860.