MS-156NB Coaxial Switch Connector - Equivalent & Substitute Parts

Part Overview

The MS-156NB is a coaxial switch receptacle connector manufactured by Hirose Electric Co Ltd, designed for 50-ohm RF applications. This component features a 4mm plug diameter with internal switching capability, surface mount solder termination, and operates across -40°C to 85°C. The MS-156NB is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production requirements.

Substiute Parts

MS-156NB

Hirose Electric Co LtdIn Stock: 100172MS-156NB Datasheet

Current PartRFQ

MS-156HF(20)

Hirose Electric Co LtdIn Stock: 3163MS-156HF(20) Datasheet

DirectRFQ

MS-156C

Hirose Electric Co LtdIn Stock: 6596MS-156C Datasheet

MFR RecommendedRFQ

MS-156C(20)

Hirose Electric Co LtdIn Stock: 6991MS-156C(20) Datasheet

MFR RecommendedRFQ

MS-156HF

Hirose Electric Co LtdIn Stock: 14486MS-156HF Datasheet

Parametric EquivalentRFQ

902-9049

Amphenol RFIn Stock: 1685902-9049 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MS-156NB is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Connector style: Coaxial switch with 4mm plug diameter
• Connector type: Receptacle, female socket
• Impedance: 50 ohms
• Mounting type: Surface mount
• Contact and shield termination: Solder
• Operating temperature range: -40°C ~ 85°C
• Fastening type: Snap-on
• Number of ports: 1
• Internal switch feature: Required

Substitute Parts Identified:

1. MS-156HF(20) - Direct manufacturer equivalent with identical electrical specifications and active product status
2. MS-156HF - Parametric equivalent with active product status
3. MS-156C(20) - Manufacturer-recommended substitute with extended frequency capability
4. MS-156C - Manufacturer-recommended substitute with extended frequency capability
5. 902-9049 - Cross-manufacturer equivalent from Amphenol RF with compatible electrical and mechanical parameters

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Hirose Ecosystem):

MS-156HF(20) and MS-156HF are the primary active equivalents from Hirose Electric Co Ltd. Both maintain identical electrical specifications to the MS-156NB within the 6 GHz frequency band and are RoHS compliant. MS-156HF(20) is supplied in tape and reel packaging, while MS-156HF is available in the same format with higher inventory levels (14,394 pcs).

For Extended Frequency Applications:

MS-156C and MS-156C(20) extend the maximum frequency specification to 11 GHz while maintaining all other electrical and mechanical parameters. These are manufacturer-recommended substitutes and carry active product status with RoHS compliance. Insertion loss increases to 0.4dB compared to 0.1dB for the MS-156NB.

For Cross-Manufacturer Compatibility:

The Amphenol RF 902-9049 provides a cross-manufacturer alternative with compatible 50-ohm impedance, surface mount solder termination, and 6 GHz frequency capability. This part features enhanced mating cycle rating (500 cycles versus 100 cycles) and ROHS3 compliance. The connector style designation differs slightly (4.30mm plug diameter versus 4mm), and insertion loss is not specified.

All substitute parts maintain the required operating temperature range, snap-on fastening, and internal switch functionality.

Frequently Asked Questions (FAQ)

Q: Can MS-156HF(20) directly replace MS-156NB in existing designs?

A: Yes. MS-156HF(20) maintains identical electrical specifications (50 ohms, 6 GHz maximum frequency, 0.15dB insertion loss) and mechanical parameters (4mm coaxial switch receptacle, surface mount solder termination, snap-on fastening). The primary difference is product status: MS-156HF(20) is active while MS-156NB is obsolete.

Q: What is the difference between MS-156HF and MS-156HF(20)?

A: Both parts are electrically and mechanically identical. The designation suffix (20) indicates a specific packaging or tape configuration variant. Both are supplied in tape and reel format and are suitable for automated assembly.

Q: When should MS-156C or MS-156C(20) be selected instead of MS-156HF?

A: MS-156C variants extend the maximum frequency specification to 11 GHz, making them suitable for applications requiring higher frequency operation. However, insertion loss increases to 0.4dB. Select MS-156C only if the 11 GHz capability is required for the application.

Q: Is the Amphenol RF 902-9049 a suitable substitute?

A: The 902-9049 is electrically compatible (50 ohms, 6 GHz, internal switch) and mechanically compatible (surface mount, solder termination, snap-on fastening). The connector style designation differs slightly (4.30mm versus 4mm plug diameter). The 902-9049 offers superior mating cycle rating (500 versus 100 cycles). Verify mechanical fit in the specific application before substitution.

Q: What compliance certifications apply to substitute parts?

A: MS-156HF, MS-156HF(20), MS-156C, and MS-156C(20) are RoHS compliant. The Amphenol RF 902-9049 is ROHS3 compliant. All parts carry MSL 1 (Unlimited) moisture sensitivity rating and EAR99 export classification.

Q: Are there packaging considerations when substituting parts?

A: MS-156NB packaging is not specified. Active substitutes are supplied in tape and reel (TR) format for Hirose parts or cut tape (CT) for the Amphenol part. Verify packaging compatibility with assembly equipment and procurement requirements.