Weidmüller 1751850000 Terminal Block - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1751850000 is a 4-position wire-to-board terminal block with horizontal orientation and 5.08mm pitch, designed for through-hole PCB mounting. This component belongs to the Omnimate LP series and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent active alternatives is essential for ongoing design support, production continuity, and component sourcing.

Key Parameters

Parameter	Value
Positions Per Level	4
Pitch	0.200" (5.08mm)
Mating Orientation	Horizontal with Board
Current Rating	20 A
Voltage Rating	300 V
Wire Gauge	12-26 AWG
Mounting Type	Through Hole
Wire Termination	Screw - Clamping Yoke, Tension Sleeve
Screw Thread	M3
Torque Specification	0.5-0.6 Nm (4.4-5.3 Lb-In)
Operating Temperature Range	-50°C ~ 100°C
Contact Material	Copper Alloy - Tin Plated
Color	Black

Substitute Part Grouping Explanation

Substitution eligibility for the 1751850000 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility: Current rating (20 A), voltage rating (300 V), and wire gauge acceptance (12-26 AWG) must be identical
Mechanical Compatibility: Pitch (5.08mm), mating orientation (horizontal with board), mounting type (through hole), and screw specifications (M3 thread, 0.5-0.6 Nm torque) must match exactly
Termination Method: Wire termination must use screw-clamping technology with clamping yoke and tension sleeve
Contact Material: Copper alloy with tin plating ensures electrical performance and corrosion resistance
Interlocking Feature: Side interlocking capability must be preserved for mechanical stability

The Weidmüller 2567120000 meets all substitution criteria as an active-status alternative within the Omnimate terminal block family.

Parameter Comparison

Parameter	1751850000 (Main Part)	2567120000 (Substitute)	Compatibility
Manufacturer	Weidmüller	Weidmüller	Match
Category	Terminal Blocks	Terminal Blocks	Match
Positions Per Level	4	4	Match
Pitch	0.200" (5.08mm)	0.200" (5.08mm)	Match
Mating Orientation	Horizontal with Board	Horizontal with Board	Match
Current Rating	20 A	20 A	Match
Voltage Rating	300 V	300 V	Match
Wire Gauge	12-26 AWG	12-26 AWG	Match
Mounting Type	Through Hole	Through Hole	Match
Wire Termination	Screw - Clamping Yoke, Tension Sleeve	Screw - Clamping Yoke, Tension Sleeve	Match
Interlocking Feature	Side	Side	Match
Color	Black	Black	Match
Screw Thread	M3	M3	Match
Torque Specification	0.5-0.6 Nm (4.4-5.3 Lb-In)	0.5-0.6 Nm (4.4-5.3 Lb-In)	Match
Contact Material	Copper Alloy - Tin Plated	Copper Alloy - Tin Plated	Match
Operating Temperature Range	-50°C ~ 100°C	-50°C ~ 120°C	Substitute exceeds specification
Product Status	Obsolete	Active	Substitute is current production
Series	Omnimate LP	Omnimate LL	Same family, different generation
ECCN	EAR99	EAR99	Match
HTSUS Code	8536.90.4000	8536.90.4000	Match

Engineering Selection Recommendations

The Weidmüller 2567120000 is a direct functional substitute for the obsolete 1751850000. Selection is based on the following engineering criteria:

Product Status: The 2567120000 maintains active production status, ensuring long-term component availability and supply chain continuity. The 1751850000 is obsolete and subject to inventory depletion.

Electrical and Mechanical Equivalence: All critical parameters—current rating, voltage rating, wire gauge acceptance, pitch, mounting configuration, and screw specifications—are identical between the two parts. PCB footprint compatibility is maintained.

Compliance and Certification: Both parts carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications, ensuring regulatory consistency across design transitions.

Enhanced Operating Temperature: The 2567120000 supports an extended upper operating temperature limit of 120°C compared to the 1751850000's 100°C maximum. This provides additional thermal margin for applications operating near temperature limits.

Series Continuity: Both components belong to the Weidmüller Omnimate terminal block family, maintaining design philosophy and connector ecosystem compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 2567120000 be used as a direct replacement for the 1751850000 on existing PCBs?

A: Yes. The 2567120000 is mechanically and electrically equivalent. Through-hole footprint, pitch spacing (5.08mm), and mounting hole positions are identical. No PCB redesign is required.

Q: Are there differences in wire termination between these parts?

A: No. Both parts use identical screw-clamping termination with clamping yoke and tension sleeve. M3 screw specifications and torque requirements (0.5-0.6 Nm) are the same.

Q: What is the significance of the different series designations (Omnimate LP vs. Omnimate LL)?

A: The series designation reflects different product generations within the Weidmüller Omnimate family. The LP series (1751850000) is obsolete; the LL series (2567120000) is the current-generation equivalent. Functional parameters remain equivalent.

Q: Does the extended temperature range of the 2567120000 affect compatibility?

A: No. The 2567120000's extended upper temperature limit (-50°C to 120°C) is a performance enhancement that does not compromise compatibility with applications designed for the 1751850000's range (-50°C to 100°C).

Q: Are packaging differences relevant to component selection?

A: Packaging format (bulk vs. other configurations) affects order quantities and logistics but does not impact electrical or mechanical compatibility. Both parts are functionally identical.

Q: What certifications apply to both parts?

A: Both parts carry EAR99 ECCN classification and 8536.90.4000 HTSUS code, ensuring consistent regulatory treatment in procurement and export scenarios.

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