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

Part Overview

The PB-16SM-B 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 essential for system maintenance, repair, and component sourcing in legacy installations.

Substiute Parts

PB-16SM-B

Sensata-CrydomIn Stock: 743PB-16SM-B 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-B are identified based on the following critical parameters that determine functional equivalence:

• Number of Channels: 16 (exact match required)
• Style: Mini (form factor compatibility)
• Mounting Type: Standoffs (mechanical compatibility)
• Connector Type: Card Edge and/or Screw Terminal Blocks (electrical interface compatibility)
• Moisture Sensitivity Level: 1 (Unlimited) (environmental tolerance match)

The Grayhill Inc. System 50 series parts 70MRCK16-EC and 70MRCK16-HL meet these substitution criteria. Both maintain the 16-channel configuration, mini style, standoff mounting, and MSL 1 rating. Connector type variations exist between the substitute options, with 70MRCK16-EC providing card edge and screw terminal blocks identical to the original, while 70MRCK16-HL substitutes the card edge connector with a header connector while retaining screw terminal blocks.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring direct connector compatibility with existing card edge interfaces, the 70MRCK16-EC is the primary substitute. This part maintains identical connector configuration to the PB-16SM-B while offering active product status and RoHS compliance.

The 70MRCK16-HL provides an alternative where header connectors are acceptable in place of card edge connectors. This option is suitable for applications where connector type flexibility exists in the system design. Note that this variant carries RoHS non-compliant status.

Both Grayhill substitutes are currently in active production status, ensuring long-term availability compared to the obsolete PB-16SM-B. All three parts share identical channel count, form factor, mounting methodology, and environmental tolerance ratings.

Frequently Asked Questions (FAQ)

Q: Can 70MRCK16-EC directly replace PB-16SM-B in existing installations?

A: Yes. The 70MRCK16-EC maintains identical connector types (card edge and screw terminal blocks), channel count (16), mounting type (standoffs), and environmental ratings (MSL 1). No mechanical or electrical interface modifications are required.

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

A: The connector type differs. The 70MRCK16-EC uses card edge connectors matching the original PB-16SM-B, while 70MRCK16-HL uses header connectors. Both retain screw terminal blocks and all other functional parameters.

Q: Are there RoHS compliance considerations for substitution?

A: The 70MRCK16-EC is RoHS compliant, while 70MRCK16-HL is RoHS non-compliant. Selection depends on system-level RoHS requirements. The original PB-16SM-B does not specify RoHS status.

Q: Why is the PB-16SM-B listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Active alternatives from Grayhill ensure continued component availability for system maintenance and repair.

Q: Are all three parts rated for the same environmental conditions?

A: Yes. All three parts carry MSL 1 (Unlimited) rating and REACH Unaffected status, indicating identical moisture sensitivity and regulatory compliance in this category.