Weidmüller 7940116957 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Weidmüller 7940116957 is a 6-position wire-to-board terminal block with 45° mating orientation, designed for through-hole PCB mounting. This component operates at 300V with a 15A current rating and accommodates wire gauges from 12-26 AWG. The part is actively manufactured and RoHS compliant, making it suitable for industrial control, automation, and power distribution applications where reliable screw-clamp wire termination is required. Substitute parts may be necessary due to inventory availability, lead time constraints, or specific application requirements that allow for alternative mating angles and current ratings within compatible electrical parameters.

Substiute Parts

7940116957

WeidmüllerIn Stock: 8457940116957 Datasheet

Current PartRFQ

282847-6

TE Connectivity AMP ConnectorsIn Stock: 12554282847-6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 7940116957 is determined by the following critical parameters:

• Position Count: Must be 6 positions per level
• Pitch: Must be 0.200" (5.08mm) to ensure PCB footprint compatibility
• Mounting Type: Must be through-hole for identical board integration
• Voltage Rating: Must be ≥300V
• Current Rating: Must be ≥15A
• Wire Gauge Range: Must accommodate 12-26 AWG minimum
• Screw Thread: Must be M3
• Housing Material: Polyamide (PA66) or equivalent
• Contact Plating: Tin-plated copper alloy or equivalent
• RoHS Compliance: Must be RoHS compliant

The TE Connectivity AMP Connectors 282847-6 qualifies as a substitute based on these parameters. While the mating angle differs (35° vs. 45°), both angles are acceptable for through-hole PCB applications where the connector orientation can be accommodated in the board layout. The substitute part exceeds the current rating (17.5A vs. 15A) and supports an extended wire gauge range (12-30 AWG vs. 12-26 AWG), providing additional design flexibility.

Parameter Comparison

Engineering Selection Recommendations

Both the Weidmüller 7940116957 and TE Connectivity 282847-6 are active products with RoHS compliance and identical voltage and pitch specifications. Selection between these parts should be based on:

• Mating Angle Accommodation: The 45° orientation of the Weidmüller part versus the 35° orientation of the TE Connectivity part must be evaluated against PCB layout constraints and connector accessibility requirements.
• Wire Termination Mechanism: The Weidmüller part uses a clamping yoke with tension sleeve, while the TE Connectivity part uses a rising cage clamp. Both are screw-based M3 termination systems suitable for industrial applications.
• Current Margin: The TE Connectivity substitute provides a 2.5A current margin above the 15A requirement, offering additional design headroom.
• Wire Gauge Flexibility: The TE Connectivity part accommodates 12-30 AWG, providing support for 28-30 AWG conductors not supported by the Weidmüller part.
• Inventory and Lead Time: Both parts are actively manufactured; selection may depend on supplier availability and delivery schedules.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 282847-6 be used as a direct replacement for the Weidmüller 7940116957?

A: Yes, provided the PCB layout accommodates the 35° mating angle instead of 45°. Both parts share identical pitch (5.08mm), position count (6), voltage (300V), screw thread (M3), and mounting type (through-hole). The substitute part meets or exceeds all electrical requirements.

Q: What is the difference between the mating angles, and does it affect compatibility?

A: The Weidmüller part has a 45° angle with the board, while the TE Connectivity part has a 35° angle. Both angles are standard for through-hole terminal blocks. Compatibility depends on whether the PCB layout and connector access path can accommodate the different angle. No electrical incompatibility exists.

Q: Are the wire termination mechanisms interchangeable?

A: Both parts use screw-based M3 termination with similar torque specifications (0.5-0.6 Nm for Weidmüller, 0.79 Nm for TE Connectivity). The clamping mechanisms differ (clamping yoke vs. rising cage clamp), but both are suitable for 12-26 AWG wire. The TE Connectivity part supports extended wire gauges up to 30 AWG.

Q: Does the contact material difference (copper alloy vs. brass) affect electrical performance?

A: Both materials are tin-plated and suitable for 300V, 15A+ applications. Copper alloy and brass have similar electrical conductivity and corrosion resistance when properly plated. Material selection does not affect electrical compatibility for this application.

Q: What is the inventory status of these parts?

A: The Weidmüller 7940116957 has 805 pieces in stock. The TE Connectivity 282847-6 has 12,452 pieces in stock. Both are actively manufactured products.

Q: Are both parts RoHS compliant?

A: Yes, both the Weidmüller 7940116957 and TE Connectivity 282847-6 are RoHS compliant and suitable for applications requiring restricted substance compliance.