GX-8MB Inductive Proximity Sensor - Equivalent & Substitute Parts

Part Overview

The GX-8MB is an inductive proximity sensor manufactured by Panasonic Industrial Automation Sales, designed for non-contact detection in industrial automation applications. This sensor features a 0.8mm sensing distance, NPN-NC output configuration, and operates across a 10V to 30V supply range with IP67 ingress protection. The GX-8MB is classified as obsolete, making identification of suitable substitute components essential for system maintenance, repair, and new design implementations where equivalent functionality is required.

Substiute Parts

GX-8MB

Panasonic Industrial Automation SalesIn Stock: 703GX-8MB Datasheet

Current PartRFQ

GX-308M-B-N

Panasonic Industrial Automation SalesIn Stock: 1108GX-308M-B-N Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GX-8MB is determined by the following critical parameters that must remain compatible:

Core Functional Parameters:

• Sensor Type: Inductive (fixed requirement)
• Output Type: NPN-NC, 3-Wire (fixed requirement)
• Voltage Supply Range: 10V ~ 30V (must be compatible)
• Package / Case: Cylinder, Threaded - M8 (mechanical compatibility)
• Termination Style: Cable Leads (connection compatibility)
• Shielding: Shielded (electromagnetic compatibility)

Allowable Variation Parameters:

• Sensing Distance: May increase from 0.8mm to 1.2mm (extended range acceptable for most applications)
• Response Frequency: May increase from 1kHz to 2kHz (improved response acceptable)
• Operating Temperature: May expand from -25°C ~ 70°C to -40°C ~ 85°C (wider range acceptable)
• Ingress Protection: May upgrade from IP67 to IP67, IP67G, IP69K (enhanced protection acceptable)
• Material - Body: May change from Nickel-Plated Brass to Stainless Steel (improved durability acceptable)

The GX-308M-B-N qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The GX-308M-B-N is the manufacturer-recommended substitute for the obsolete GX-8MB. Selection of this substitute is supported by the following factors:

Product Status: The GX-8MB is classified as obsolete, while the GX-308M-B-N is active in the Panasonic product line, ensuring long-term availability and supply chain continuity.

Compliance: Both components maintain RoHS compliance. The GX-308M-B-N achieves ROHS3 compliance, meeting current regulatory requirements for electronic components in restricted substance use applications.

Functional Compatibility: The GX-308M-B-N maintains all critical electrical and mechanical parameters required for direct substitution. The extended sensing distance (1.2mm versus 0.8mm) and improved response frequency (2kHz versus 1kHz) represent performance enhancements rather than limitations.

Environmental Robustness: The GX-308M-B-N offers an expanded operating temperature range (-40°C to 85°C versus -25°C to 70°C) and enhanced ingress protection ratings (IP67, IP67G, IP69K), providing greater environmental tolerance for demanding industrial applications.

Material Upgrade: The transition from nickel-plated brass to stainless steel body construction improves corrosion resistance and durability in harsh operating environments.

Frequently Asked Questions (FAQ)

Q: Can the GX-308M-B-N be used as a direct replacement for the GX-8MB in existing installations?

A: Yes. The GX-308M-B-N maintains identical electrical output type (NPN-NC, 3-Wire), voltage supply range (10V ~ 30V), and mechanical package (M8 threaded cylinder with cable leads). The M8 threaded form factor ensures mechanical compatibility with existing mounting hardware.

Q: What is the impact of the increased sensing distance (1.2mm versus 0.8mm)?

A: The GX-308M-B-N provides a longer detection range. In applications where the original 0.8mm sensing distance was critical, the extended 1.2mm range may require adjustment of sensor positioning or mounting distance. For most industrial applications, the extended range is compatible or beneficial.

Q: Does the improved response frequency (2kHz versus 1kHz) affect system compatibility?

A: No. The 2kHz response frequency of the GX-308M-B-N is faster than the original 1kHz specification. This represents an improvement that is compatible with all control systems designed for the GX-8MB.

Q: Are there any environmental advantages to the GX-308M-B-N?

A: Yes. The GX-308M-B-N operates across a wider temperature range (-40°C to 85°C versus -25°C to 70°C) and offers enhanced ingress protection (IP67, IP67G, IP69K versus IP67). The stainless steel body provides superior corrosion resistance compared to the nickel-plated brass construction of the GX-8MB.

Q: Is the GX-308M-B-N available in the same packaging format?

A: Yes. Both sensors use identical termination (cable leads) and package style (M8 threaded cylinder). No changes to wiring or installation procedures are required.

Q: What is the significance of ROHS3 compliance on the GX-308M-B-N?

A: ROHS3 compliance indicates adherence to current Restriction of Hazardous Substances regulations. This ensures the component meets modern environmental and safety standards for electronic equipment used in industrial applications.