PB-16SM-A I/O Module Rack 16 Channel Equivalent & Substitute Parts

Part Overview

The PB-16SM-A is a 16-channel I/O module rack manufactured by Sensata-Crydom in the PB series. This component features a mini-style form factor with card edge and screw terminal block connectors, designed for rack-mounted I/O applications. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for system maintenance, repair, and component sourcing in legacy installations.

Substiute Parts

PB-16SM-A

Sensata-CrydomIn Stock: 1000PB-16SM-A Datasheet

Current PartRFQ

70MRCK16-EC

Grayhill Inc.In Stock: 89270MRCK16-EC Datasheet

SimilarRFQ

70MRCK16-HL

Grayhill Inc.In Stock: 109470MRCK16-HL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PB-16SM-A are identified based on the following critical parameters that determine functional equivalence:

• Number of Channels: 16 channels (exact match required)
• Style: Mini form factor (exact match required)
• Mounting Type: Standoffs (exact match required)
• Moisture Sensitivity Level: MSL 1 (Unlimited) (exact match required)
• Connector Type: Card Edge and/or Screw Terminal Blocks (compatible configurations)

The substitute parts listed below maintain these core electrical and mechanical specifications, ensuring compatibility with systems originally designed for the PB-16SM-A.

Parameter Comparison

Engineering Selection Recommendations

70MRCK16-EC (Grayhill Inc.): This substitute maintains identical connector type specifications (Card Edge and Screw Terminal Blocks) to the original PB-16SM-A. The part is currently active in production and carries RoHS Compliant certification, providing regulatory advantage for new system integrations. This option is preferred when connector compatibility is a primary requirement.

70MRCK16-HL (Grayhill Inc.): This substitute features a header connector configuration in place of the card edge connector found on the original part. While the screw terminal block interface is maintained, the header connector represents a mechanical interface variation. The part is active in production but carries RoHS non-compliant status. Selection of this option requires verification that the header connector interface is compatible with the target system's mating connector.

Both substitute parts are manufactured by Grayhill Inc. in the System 50 series and maintain all critical electrical and mechanical parameters required for functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the 70MRCK16-EC directly replace the PB-16SM-A?

A: The 70MRCK16-EC maintains identical channel count (16), style (mini), mounting type (standoffs), MSL rating (1), and connector types (card edge and screw terminal blocks). Direct replacement is supported from an electrical and mechanical standpoint.

Q: What is the difference between the 70MRCK16-EC and 70MRCK16-HL?

A: Both parts share 16 channels, mini style, standoff mounting, and MSL 1 rating. The primary difference is the connector type: 70MRCK16-EC uses card edge and screw terminal blocks, while 70MRCK16-HL uses header and screw terminal blocks. The header connector on the 70MRCK16-HL represents a different mechanical interface.

Q: Are there RoHS compliance differences between the substitutes?

A: Yes. The 70MRCK16-EC is RoHS Compliant, while the 70MRCK16-HL is RoHS non-compliant. For applications subject to RoHS regulations, the 70MRCK16-EC is the appropriate selection.

Q: Do the substitute parts have the same HTSUS codes as the original?

A: No. The PB-16SM-A carries HTSUS code 8543.70.9860, while both Grayhill substitutes carry HTSUS code 8538.90.8180. This difference reflects manufacturer classification and does not affect functional equivalence.

Q: What is the inventory status of these substitute parts?

A: PB-16SM-A: 988 pcs in stock (obsolete status). 70MRCK16-EC: 868 pcs in stock (active). 70MRCK16-HL: 1052 pcs in stock (active).