Weidmüller 7940126321 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Weidmüller 7940126321 is a 13-position wire-to-board terminal block with side entry configuration and 5.00mm pitch, designed for horizontal mounting through PCB holes. This component is part of the Omnimate LM series and maintains active product status with RoHS compliance. Substitute parts may be required due to inventory constraints, design revisions, or regional availability considerations while maintaining equivalent electrical and mechanical performance within the specified parameter range.

Substiute Parts

7940126321

WeidmüllerIn Stock: 9007940126321 Datasheet

Current PartRFQ

1-282836-3

TE Connectivity AMP ConnectorsIn Stock: 25001-282836-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 7940126321 is determined by the following critical parameters:

• Pitch: 0.197" (5.00mm) — must match exactly for PCB footprint compatibility
• Mating Orientation: Horizontal with Board — mechanical alignment requirement
• Mounting Type: Through Hole — PCB assembly method
• Number of Levels: 1 — single-row configuration
• Category: Terminal Blocks — functional classification

The substitute part TE Connectivity AMP Connectors 1-282836-3 shares the core pitch, mating orientation, mounting type, and level configuration. However, this part operates at 2 positions per level, which represents a different capacity configuration within the same terminal block family. Substitution is valid only when the application circuit design accommodates the reduced position count or when used in parallel configurations.

Parameter Comparison

Engineering Selection Recommendations

Both the Weidmüller 7940126321 and TE Connectivity 1-282836-3 maintain active product status and RoHS compliance, ensuring long-term availability and regulatory conformance. Selection between these components depends on position count requirements: the Weidmüller part accommodates 13 positions per level, while the TE Connectivity substitute provides 2 positions per level. The shared 5.00mm pitch and through-hole mounting configuration enable direct PCB footprint compatibility when position count is not a limiting factor. Both components carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 1-282836-3 directly replace the Weidmüller 7940126321 in all applications?

A: Direct replacement is limited by position count. The TE Connectivity part provides 2 positions versus 13 positions in the Weidmüller part. Substitution is valid only when the circuit design requires 2 or fewer connection points, or when multiple units are used in parallel to achieve the required position count.

Q: Are the PCB footprints identical between these two parts?

A: The pitch (5.00mm), mating orientation (horizontal with board), and mounting type (through hole) are identical, ensuring compatible PCB hole spacing and mounting alignment. However, the overall footprint length differs due to the position count difference.

Q: Do both parts meet the same compliance standards?

A: Both parts are RoHS Compliant and carry the same ECCN and HTSUS classifications, confirming equivalent regulatory status for procurement and export purposes.

Q: What is the significance of the color difference (Black vs. Green)?

A: Color is a visual identification feature and does not affect electrical or mechanical performance. Selection may depend on PCB assembly documentation or internal color-coding standards.

Q: Are there any electrical parameter differences between these parts?

A: The TE Connectivity 1-282836-3 specifies electrical parameters (14.6 A current rating, 300 V voltage rating, 16-30 AWG wire gauge, and 0.68 Nm screw torque). The Weidmüller 7940126321 does not provide these specifications in the available data. Verify electrical requirements against your application before substitution.