Littelfuse 59070-040 Equivalent & Substitute Parts

Part Overview

The Littelfuse 59070-040 is a magnetic reed switch sensor with SPST-NC (Single Pole Single Throw - Normally Closed) output configuration. This component features wire leads termination and operates within a temperature range of -40°C to 105°C. The device is housed in a cylinder threaded package and is actuated by magnetic field presence. As an active product with ROHS3 compliance and unlimited moisture sensitivity rating, this part remains in production. Substitute parts may be required due to inventory constraints, supply chain considerations, or design optimization needs while maintaining equivalent electrical and mechanical performance.

Substiute Parts

59070-040

Littelfuse Inc.In Stock: 86859070-040 Datasheet

Current PartRFQ

59065-040

LittelfuseIn Stock: 163159065-040 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 59070-040 are qualified based on strict equivalence of the following critical parameters:

• Output Type: SPST-NC configuration
• Actuator Material: Magnet
• Termination Style: Wire Leads
• Must Operate Distance: 3.81 mm
• Must Release Distance: 20.32 mm
• Operating Temperature Range: -40°C to 105°C
• Package / Case: Cylinder, Threaded
• RoHS Compliance: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The Littelfuse 59065-040 qualifies as a direct substitute because it maintains identical electrical characteristics, mechanical dimensions, actuation thresholds, and environmental operating parameters. Both parts are manufactured by Littelfuse, share the same reed switch technology, and are classified as active products with equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 59070-040 and 59065-040 are active products with full ROHS3 compliance and REACH unaffected status. The 59065-040 substitute maintains identical electrical performance, mechanical specifications, and environmental operating parameters. Selection between these parts should be based on inventory availability and supply chain requirements, as both components satisfy equivalent engineering specifications for magnetic reed switch applications requiring SPST-NC output with wire lead termination in threaded cylinder packages.

Frequently Asked Questions (FAQ)

Q: Can the 59065-040 be used as a direct replacement for the 59070-040?

A: Yes. Both parts share identical output type (SPST-NC), actuator material (magnet), termination style (wire leads), actuation distances (3.81 mm operate / 20.32 mm release), operating temperature range (-40°C to 105°C), package configuration (cylinder, threaded), and compliance certifications (ROHS3). No circuit modifications or mechanical adjustments are required.

Q: Are there differences in the series designation between these parts?

A: The parts belong to different series (59070 and 59065 respectively). However, series designation does not affect functional equivalence when all electrical and mechanical parameters are identical. Both series are manufactured by Littelfuse and classified as active products.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching output type, actuator material, termination style, must-operate and must-release distances, operating temperature range, package configuration, and compliance status. All these parameters are identical between the 59070-040 and 59065-040.

Q: Are both parts suitable for applications requiring ROHS3 compliance?

A: Yes. Both the 59070-040 and 59065-040 are ROHS3 compliant and REACH unaffected, making them suitable for applications with regulatory compliance requirements.

Q: What is the moisture sensitivity rating for these reed switches?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited moisture sensitivity. This classification means the components do not require special moisture control during storage or handling.