PB-24SM-A Equivalent & Substitute Parts

Part Overview

The PB-24SM-A is a 24-channel I/O module rack manufactured by Sensata-Crydom in mini style configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications. The module utilizes card edge and screw terminal block connectors with standoff mounting, serving as an interface solution for industrial control and data acquisition systems.

Substiute Parts

PB-24SM-A

Sensata-CrydomIn Stock: 829PB-24SM-A Datasheet

Current PartRFQ

70MRCK24-EC

Grayhill Inc.In Stock: 77970MRCK24-EC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PB-24SM-A is determined by the following critical parameters:

• Channel Count: 24 channels (exact match required)
• Connector Configuration: Card edge and screw terminal blocks (both connector types must be present)
• Mounting Method: Standoffs (mechanical compatibility requirement)
• Form Factor: Mini style (physical envelope constraint)
• Moisture Sensitivity: MSL 1 (Unlimited) or equivalent environmental rating
• Export Classification: EAR99 (regulatory alignment)

The substitute part 70MRCK24-EC from Grayhill Inc. satisfies all critical substitution parameters, enabling direct functional replacement in applications requiring 24-channel I/O module rack functionality.

Parameter Comparison

Engineering Selection Recommendations

The 70MRCK24-EC represents a direct functional equivalent for the obsolete PB-24SM-A. Both components share identical channel architecture, connector specifications, and mounting methodology. The 70MRCK24-EC maintains active product status with current manufacturing support, addressing the obsolescence constraint of the original component.

Regulatory compliance is maintained across both parts: both are REACH Unaffected and classified under ECCN EAR99. The 70MRCK24-EC carries RoHS non-compliant status, which should be evaluated against system-level compliance requirements if RoHS certification is mandated.

Selection of the 70MRCK24-EC is appropriate for applications requiring direct replacement of the PB-24SM-A without mechanical or electrical redesign.

Frequently Asked Questions (FAQ)

Q: Can the 70MRCK24-EC directly replace the PB-24SM-A in existing installations?

A: Yes. Both components feature identical 24-channel configuration, card edge and screw terminal block connectors, standoff mounting, and mini form factor. Physical and electrical compatibility is maintained.

Q: What is the significance of the PB-24SM-A being obsolete?

A: Obsolete status indicates the component is no longer manufactured by Sensata-Crydom. The 70MRCK24-EC, classified as active, provides ongoing availability and manufacturing support for equivalent functionality.

Q: Are there compliance differences between the two parts?

A: Both components are REACH Unaffected and EAR99 classified. The 70MRCK24-EC is RoHS non-compliant, whereas RoHS status for the PB-24SM-A was not specified. System-level RoHS requirements should be evaluated independently.

Q: Does MSL rating affect substitution suitability?

A: Both components share MSL 1 (Unlimited) rating, indicating equivalent moisture sensitivity characteristics. No environmental handling differences are introduced by substitution.

Q: What packaging format is available for the 70MRCK24-EC?

A: The 70MRCK24-EC is supplied in bulk packaging, differing from the PB-24SM-A packaging specification. Verify packaging requirements for procurement and inventory management purposes.