Equivalent & Substitute Parts for Weidmüller 1776552001

Part Overview

The Weidmüller 1776552001 is a 21-position terminal block header with male pins, shrouded on four sides, featuring 0.200" (5.08mm) pitch vertical through-hole mounting. This component is part of the Omnimate SL series and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for ongoing system maintenance, repairs, and new designs requiring compatible interconnection solutions.

Substiute Parts

1776552001

WeidmüllerIn Stock: 8101776552001 Datasheet

Current PartRFQ

1838400000

WeidmüllerIn Stock: 11501838400000 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Weidmüller 1776552001 is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Current rating (IEC: 27.5A, UL: 18.5A) and voltage rating (IEC: 400V, UL: 300V) must match exactly
• Physical Configuration: 21 positions, 0.200" (5.08mm) pitch, vertical orientation, and through-hole mounting must be identical
• Connector Type: Male pins with four-side shrouding are mandatory
• Material and Safety Compliance: Copper alloy contacts, LCP glass-filled housing, and UL94 V-0 flammability rating must be maintained
• Termination Method: Solder termination is required

The substitute part 1838400000 meets all these criteria and is therefore a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The Weidmüller 1838400000 is the direct substitute for the obsolete 1776552001. Both components are manufactured by Weidmüller within the Omnimate SL series and maintain identical electrical, mechanical, and material specifications across all critical parameters.

The primary difference between the two parts is the contact tail length: the 1776552001 features a 0.059" (1.50mm) tail, while the 1838400000 has a 0.126" (3.20mm) tail. This difference affects solder joint geometry and PCB hole depth requirements. Designs originally specified for the 1776552001 must account for this dimensional variation during PCB layout and assembly planning.

The 1838400000 holds active product status, ensuring ongoing availability and supply chain continuity. Both parts maintain RoHS compliance and UL94 V-0 flammability certification, supporting applications requiring regulatory compliance in industrial and commercial environments.

Frequently Asked Questions (FAQ)

Q: Can the 1838400000 be used as a direct replacement for the 1776552001 in existing designs?

A: The 1838400000 is electrically and mechanically equivalent to the 1776552001 across all critical parameters. However, the contact tail length difference (0.059" versus 0.126") requires PCB layout verification. Existing through-hole patterns must accommodate the longer tail of the 1838400000 to ensure proper solder joint formation and mechanical stability.

Q: What is the significance of the contact tail length difference?

A: Contact tail length determines the depth of insertion into PCB holes and affects solder joint quality. The 1838400000's longer tail (0.126") provides greater engagement with the PCB hole, potentially improving mechanical strength. PCB designs must be evaluated to confirm hole depth compatibility.

Q: Are both parts suitable for the same electrical applications?

A: Yes. Both the 1776552001 and 1838400000 maintain identical current ratings (IEC: 27.5A, UL: 18.5A) and voltage ratings (IEC: 400V, UL: 300V). They are suitable for equivalent electrical applications within these specifications.

Q: What is the packaging difference between these parts?

A: The 1776552001 is listed with unspecified packaging, while the 1838400000 is supplied in bulk packaging. Procurement and handling procedures may differ accordingly.

Q: Why is the 1776552001 classified as obsolete?

A: The 1776552001 has been superseded by the 1838400000 within the Weidmüller product line. The 1838400000 maintains full functional equivalence while offering active product status and ongoing manufacturer support.

Q: Are both parts RoHS compliant?

A: Yes. Both the 1776552001 and 1838400000 are RoHS compliant and maintain UL94 V-0 flammability certification, supporting applications in regulated industries.