Cinch Connectivity Solutions 20-140 Barrier Block Terminal Connector

Part Overview

The Cinch Connectivity Solutions 20-140 is a 20-circuit barrier block terminal connector with 0.375" (9.53mm) pitch spacing, designed for chassis and panel mounting applications. This component features dual-wall barrier construction with screw termination on the top and closed termination on the bottom. The part is currently active in production with 659 units in stock. Equivalent substitute parts may be required due to supply chain considerations, manufacturing lead times, or specific application requirements where alternative certifications or material compositions are acceptable.

Substiute Parts

20-140

Cinch Connectivity SolutionsIn Stock: 76320-140 Datasheet

Current PartRFQ

0387700120

MolexIn Stock: 22260387700120 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0387700120 (Beau 38770 series) qualifies as an equivalent substitute for the Cinch 20-140 based on the following critical parameters:

Matching Parameters:

• Number of circuits: 20
• Pitch spacing: 0.375" (9.53mm)
• Number of rows: 2
• Terminal block type: Barrier block
• Current rating: 15A
• Top termination: Screws
• Bottom termination: Closed
• Barrier type: 2 Wall (Dual)
• Mounting type: Chassis, Panel
• Number of wire entries: 40

Allowable Variations:

• Voltage rating: 300V (substitute) vs. 250V (main part) — higher rating is acceptable
• Wire gauge: 14-22 AWG (substitute) vs. 16 AWG (main part) — substitute range includes main part specification
• Insulation material: PBT (substitute) vs. Phenolic (main part) — both acceptable for this application class
• Terminal screw finish: Zinc, Clear Chromate (substitute) vs. Nickel (main part) — both provide corrosion protection
• Flammability rating: UL94 V-0 (substitute) vs. not specified (main part) — additional certification acceptable

Parameter Comparison

Engineering Selection Recommendations

Both the Cinch 20-140 and Molex 0387700120 are active production components with full regulatory compliance. The Molex substitute offers higher voltage rating (300V vs. 250V), broader wire gauge acceptance (14-22 AWG vs. 16 AWG), and superior flammability certification (UL94 V-0). The Molex part maintains identical mechanical and electrical interface specifications, ensuring direct substitution in applications designed for the Cinch part. Selection between these components should be based on supply availability, lead time requirements, and any design-specific material or certification preferences. The Molex part's higher inventory level (2174 units) may provide supply chain advantages.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0387700120 directly replace the Cinch 20-140 in existing designs?

A: Yes. Both components share identical circuit count (20), pitch spacing (0.375"), row configuration (2), current rating (15A), termination methods (screw top, closed bottom), and mounting type (chassis/panel). The Molex part's higher voltage rating and broader wire gauge range do not create compatibility issues.

Q: What is the significance of the different insulation materials?

A: The Cinch part uses Phenolic (Phenol Formaldehyde) while the Molex uses PBT (Polybutylene Terephthalate). Both materials are suitable for barrier block terminal applications. PBT offers improved moisture resistance and dimensional stability, while Phenolic provides established performance in industrial environments. Material selection depends on specific environmental and thermal requirements of the application.

Q: Does the wire gauge difference affect compatibility?

A: No. The Cinch part specifies 16 AWG, while the Molex part accepts 14-22 AWG. The Molex range encompasses the Cinch specification, allowing use of 16 AWG wire without modification.

Q: What does the higher voltage rating on the Molex part mean?

A: The Molex 0387700120 is rated for 300V compared to the Cinch part's 250V. This higher rating provides additional safety margin and allows the Molex part to be used in applications requiring up to 300V operation. It does not restrict use in 250V applications.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS compliant. The Molex part carries ROHS3 compliance and UL94 V-0 flammability certification. The Cinch part is RoHS Compliant without specified flammability rating. Both meet REACH and EAR99 export control requirements.

Q: How do the terminal screw finishes compare?

A: The Cinch part uses Nickel finish, while the Molex part uses Zinc with Clear Chromate finish. Both provide corrosion protection suitable for industrial terminal block applications. Finish selection may depend on specific environmental exposure or aesthetic requirements.