Weidmüller 1974090000 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Weidmüller 1974090000 is a 16-position terminal block header with male pins, shrouded on four sides, designed for 0.150" (3.81mm) pitch right-angle through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations. The part operates within IEC ratings of 17.5A at 320V and UL ratings of 10A at 300V, with operating temperature range of -50°C to 120°C.

Substiute Parts

1974090000

WeidmüllerIn Stock: 7951974090000 Datasheet

Current PartRFQ

1842979

Phoenix ContactIn Stock: 10301842979 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Weidmüller 1974090000 is determined by strict alignment of the following critical parameters:

• 16-position configuration with 8 positions per level and 2 levels
• 0.150" (3.81mm) pitch spacing
• 90° right-angle header orientation
• Male pin, four-side shrouded design
• Solder termination for through-hole mounting
• Voltage rating of 320V IEC / 300V UL minimum
• UL94 V-0 flammability rating
• Tin contact mating finish
• Insulation height of 0.894" (22.71mm)

The Phoenix Contact 1842979 meets these core mechanical and electrical compatibility criteria, enabling direct functional substitution in applications requiring equivalent terminal block header performance.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1842979 provides functional equivalence to the obsolete Weidmüller 1974090000 based on matching mechanical dimensions, pitch spacing, connector orientation, and core electrical ratings. Both components maintain UL94 V-0 flammability compliance and identical moisture sensitivity classification.

The primary electrical difference is current rating: the Phoenix Contact substitute is rated at 8A IEC and 8A UL, compared to the original part's 17.5A IEC and 10A UL ratings. This lower current capacity must be evaluated against actual circuit requirements. Voltage ratings remain equivalent at 320V IEC and 300V UL.

The Phoenix Contact 1842979 carries active product status with ROHS3 compliance, ensuring continued availability and regulatory alignment. The Weidmüller original is obsolete, making the substitute the appropriate selection for new procurement and system continuity.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1842979 be used as a direct replacement for the Weidmüller 1974090000?

A: Yes, for applications where the 8A current rating is sufficient. The mechanical footprint, pitch spacing, connector type, and voltage ratings are identical. Current capacity is the limiting factor and must be verified against circuit requirements.

Q: What is the primary difference between these two parts?

A: The current rating differs. The Weidmüller original supports 17.5A at IEC and 10A at UL, while the Phoenix Contact substitute supports 8A at both IEC and UL. All other electrical and mechanical parameters are equivalent.

Q: Why is the Weidmüller 1974090000 listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The Phoenix Contact 1842979 is an active product offering equivalent functionality and should be used for new designs and ongoing procurement.

Q: Are there any housing material differences?

A: Yes. The Weidmüller uses Liquid Crystal Polymer (LCP) glass-filled housing, while the Phoenix Contact uses Polyamide (PA) nylon. Both materials meet UL94 V-0 flammability requirements.

Q: Do both parts have the same contact tail length?

A: No. The Weidmüller has a contact tail length of 0.059" (1.50mm), while the Phoenix Contact has 0.138" (4.60mm). This difference may affect PCB design considerations and solder joint geometry.

Q: Are both parts RoHS compliant?

A: Yes. The Weidmüller is RoHS Compliant, and the Phoenix Contact is ROHS3 Compliant. Both meet current environmental regulations.