MS-145NB Equivalent & Substitute Parts

Part Overview

The MS-145NB is a coaxial switch receptacle connector manufactured by Hirose Electric Co Ltd, designed for 50 Ohm RF applications. This surface mount component features a 4.15mm plug diameter with internal switching capability and solder termination for both center contact and shield. The MS-145NB is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

MS-145NB

Hirose Electric Co LtdIn Stock: 861MS-145NB Datasheet

Current PartRFQ

MS-147(06)

Hirose Electric Co LtdIn Stock: 3505MS-147(06) Datasheet

MFR RecommendedRFQ

MS-162B

Hirose Electric Co LtdIn Stock: 3999MS-162B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MS-145NB are identified based on the following core compatibility criteria:

Primary Compatibility Requirements:

• Connector type: Receptacle, Female Socket
• Impedance: 50 Ohms
• Mounting type: Surface Mount
• Contact termination: Solder
• Shield termination: Solder
• Features: Internal Switch
• Manufacturer: Hirose Electric Co Ltd

Secondary Considerations:

• Plug diameter variations (4.15mm, 4.8mm, 4mm) are acceptable within the coaxial switch family
• Fastening type may differ (Push-Pull vs. Snap-On) based on application requirements
• Frequency range, insertion loss, and mating cycle ratings vary by substitute model
• Operating temperature range and dielectric materials differ across substitutes

The MS-147(06) and MS-162B are manufacturer-designated substitutes that maintain core electrical and mechanical compatibility while offering enhanced performance characteristics in specific parameters.

Parameter Comparison

Engineering Selection Recommendations

MS-147(06) Selection Criteria: The MS-147(06) is an active product with ROHS3 compliance and REACH unaffected status, providing regulatory alignment for new designs. This substitute maintains Push-Pull fastening identical to the MS-145NB while offering increased frequency capability (6 GHz vs. 2.5 GHz) and improved mating cycle rating (12000 vs. 10000). The 4.8mm plug diameter represents a minor mechanical variation within the coaxial switch family. Insertion loss increases from 0.6dB to 0.8dB. Packaging is supplied as Tape & Reel (TR), supporting automated assembly processes.

MS-162B Selection Criteria: The MS-162B is an active product with ROHS3 compliance and REACH unaffected status. This substitute provides the highest frequency capability (10 GHz) and extended operating temperature range (-40°C to 85°C vs. -30°C to 85°C). The fastening type differs from the MS-145NB, utilizing Snap-On instead of Push-Pull, which may require mechanical design consideration. The 4mm plug diameter and Liquid Crystal Polymer (LCP) dielectric material represent material and dimensional variations. Insertion loss is 0.7dB, positioned between the other two options.

Both substitutes maintain core 50 Ohm impedance, surface mount configuration, and solder termination required for direct functional replacement.

Frequently Asked Questions (FAQ)

Q: Can MS-147(06) or MS-162B be used as direct replacements for MS-145NB in existing designs?

A: Both parts maintain the core electrical specifications (50 Ohm impedance, receptacle female socket, solder termination, internal switch, surface mount). However, mechanical compatibility must be verified. The MS-147(06) uses identical Push-Pull fastening, while the MS-162B uses Snap-On fastening. Plug diameter differences (4.15mm, 4.8mm, 4mm) may affect mating with existing connectors.

Q: What is the significance of the frequency rating differences?

A: The MS-145NB operates to 2.5 GHz, MS-147(06) to 6 GHz, and MS-162B to 10 GHz. Selection depends on application bandwidth requirements. Higher frequency-rated components do not degrade performance in lower-frequency applications but may introduce unnecessary cost.

Q: How do the fastening type differences affect selection?

A: MS-145NB and MS-147(06) both use Push-Pull fastening, providing identical mating behavior. MS-162B uses Snap-On fastening, which requires different mechanical engagement. Fastening type selection depends on connector interface design and user preference.

Q: What compliance advantages do the substitute parts offer?

A: Both MS-147(06) and MS-162B are active products with ROHS3 compliance and REACH unaffected status, supporting current regulatory requirements. The MS-145NB is obsolete and lacks specified compliance documentation.

Q: How do insertion loss values compare across these parts?

A: MS-145NB: 0.6dB, MS-147(06): 0.8dB, MS-162B: 0.7dB. Insertion loss differences are minimal and application-dependent. Selection should prioritize frequency capability and compliance status over marginal insertion loss variations.

Q: What packaging considerations apply to these substitutes?

A: MS-145NB and MS-162B packaging is not specified. MS-147(06) is supplied in Tape & Reel (TR) format, supporting automated surface mount assembly. Packaging format may influence procurement and assembly process compatibility.

Q: Are there temperature range differences that affect selection?

A: MS-145NB and MS-147(06) operate from -30°C to 85°C. MS-162B extends the lower limit to -40°C, providing wider temperature range coverage for applications requiring enhanced thermal performance.