MK16-B-1 Equivalent & Substitute Parts Reference

Part Overview

The MK16-B-1 is a molded body reed switch manufactured by Standex-Meder Electronics, configured as a SPST-NO (Single Pole Single Throw - Normally Open) device. This surface mount component operates at 400mA switching current with 200V AC/DC rating and 10W power capacity. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent functional performance can be maintained within the specified electrical and mechanical parameters of the MK16-B-1 series, particularly when the primary part becomes unavailable or when alternative packaging formats are required for manufacturing processes.

Substiute Parts

MK16-B-1

Standex-Meder ElectronicsIn Stock: 3479MK16-B-1 Datasheet

Current PartRFQ

59170-1-S-00-D

Littelfuse Inc.In Stock: 3048859170-1-S-00-D Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MK16-B-1 is determined by the following critical parameters:

Circuit Configuration: Both main and substitute parts must maintain SPST-NO topology to ensure functional equivalence in switching applications.

Operate Range: The 10 ~ 15AT specification defines the magnetic field sensitivity window. Substitute parts must operate within this identical range to ensure reliable actuation in the target application.

Mounting Type: Surface mount classification is mandatory for PCB assembly compatibility.

Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained across all substitute selections.

Power Rating: The 10W rated power establishes the maximum safe operating envelope for thermal and electrical stress.

The substitute part 59170-1-S-00-D from Littelfuse Inc. qualifies as an equivalent based on matching circuit configuration (SPST-NO), identical operate range (10 ~ 15AT), surface mount capability, and equivalent compliance certifications. Differences in switching current ratings, voltage specifications, and packaging format represent controlled variations within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: The MK16-B-1 remains the specified component for applications requiring 200V AC switching capability and the extended operating temperature range to 130°C.

Substitute Selection Criteria: The 59170-1-S-00-D from Littelfuse Inc. is suitable for applications where:

• AC switching voltage requirement does not exceed 140V
• DC switching voltage requirement is 200V or lower
• Operating temperature maximum does not exceed 125°C
• Gull Wing termination style is compatible with PCB assembly processes
• Cut Tape or Digi-Reel® packaging formats are acceptable for manufacturing workflows

Both parts maintain Active product status, ROHS3 compliance, and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory alignment. The substitute part offers higher DC current carry capacity (800mA) compared to the main part (500mA), providing additional design margin in DC-dominant applications.

Frequently Asked Questions (FAQ)

Q: Can the 59170-1-S-00-D replace the MK16-B-1 in all applications?

A: No. The 59170-1-S-00-D has a reduced AC switching voltage rating of 140V compared to the MK16-B-1's 200V. Applications requiring 200V AC switching must use the MK16-B-1. DC applications rated at 200V or lower can use the substitute.

Q: What is the significance of the different termination styles (Axial, Flat vs. Gull Wing)?

A: Termination style affects PCB pad layout and soldering process compatibility. Axial, Flat termination requires different pad geometry than Gull Wing. PCB design must be verified before substitution.

Q: Are both parts suitable for high-temperature applications?

A: The MK16-B-1 operates to 130°C, while the 59170-1-S-00-D operates to 125°C. For applications exceeding 125°C, the MK16-B-1 is required.

Q: What packaging differences exist between these parts?

A: The MK16-B-1 is supplied in Tape & Reel (TR) format. The 59170-1-S-00-D is supplied in Cut Tape (CT) and Digi-Reel® formats. Manufacturing processes must accommodate these different packaging specifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry unlimited moisture sensitivity rating (MSL 1), ensuring equivalent regulatory and environmental compliance.

Q: What is the operate range specification, and why is it critical for substitution?

A: The 10 ~ 15AT operate range specifies the magnetic field strength (in Ampere-Turns) required to actuate the reed switch. Both parts share this identical specification, ensuring they respond to the same magnetic stimulus in the application circuit.