Phoenix Contact 1785997 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1785997 is a 7-position terminal block header with female sockets, designed for vertical through-hole mounting with 5.08mm pitch spacing. This component is part of the COMBICON ICV series and is actively manufactured. Terminal block headers serve as connection interfaces in industrial control systems, power distribution, and signal routing applications. Identifying equivalent substitute parts is necessary when the primary part is unavailable, when sourcing from alternative suppliers is required, or when design flexibility across manufacturing partners is needed.

Substiute Parts

1785997

Phoenix ContactIn Stock: 7991785997 Datasheet

Current PartRFQ

1646250000

WeidmüllerIn Stock: 11361646250000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for terminal block headers is determined by the following critical parameters:

• Pitch spacing (0.200" / 5.08mm): Must match exactly to ensure mechanical and electrical compatibility with mating connectors and PCB layouts
• Header orientation (Vertical): Physical mounting configuration must align with application requirements
• Mounting type (Through Hole): Termination method must be compatible with existing PCB designs
• Electrical ratings (Current and Voltage): Substitute parts must meet or exceed the application's electrical requirements under both IEC and UL standards
• Termination style (Solder): Connection method must be identical
• Type (Header, Female Sockets): Functional role and contact gender must match

The substitute part Weidmüller 1646250000 shares the same pitch (5.08mm), vertical orientation, through-hole mounting, solder termination, and female socket configuration. However, this part is a 2-position header, whereas the main part is a 7-position header. This represents a different position count and therefore cannot serve as a direct one-to-one substitute for applications requiring all 7 positions. The substitute part is listed in the source data but does not meet the position count requirement for equivalent substitution.

Parameter Comparison

Engineering Selection Recommendations

Based on the provided specifications, the Weidmüller 1646250000 cannot serve as a direct equivalent substitute for the Phoenix Contact 1785997 due to critical parameter mismatches:

1. Position Count Mismatch: The substitute part provides 2 positions versus the required 7 positions. This fundamental difference makes it unsuitable for applications designed around the 7-position configuration.

2. Voltage Rating Discrepancy: The IEC voltage rating of the substitute part is 250V, which falls below the main part's 630V IEC rating. Applications requiring the higher voltage specification cannot use this substitute.

3. Mechanical Compatibility: While both parts share identical pitch spacing, vertical orientation, and through-hole mounting, the reduced position count creates incompatibility with connector interfaces and PCB layouts designed for 7-position headers.

Both parts maintain active product status and comply with RoHS and UL94 V-0 flammability requirements. However, these shared compliance attributes do not override the fundamental electrical and mechanical incompatibilities.

Frequently Asked Questions (FAQ)

Q: Can the Weidmüller 1646250000 replace the Phoenix Contact 1785997 in my application?

A: No. The substitute part has only 2 positions compared to the required 7 positions, and its IEC voltage rating of 250V is below the main part's 630V specification. Direct substitution is not possible.

Q: What parameters must match for terminal block header substitution?

A: Critical parameters include position count, pitch spacing (5.08mm), header orientation (vertical), mounting type (through hole), termination style (solder), contact type (female sockets), and electrical ratings (current and voltage under both IEC and UL standards).

Q: Are both parts RoHS compliant?

A: Yes. The Phoenix Contact 1785997 is ROHS3 compliant, and the Weidmüller 1646250000 is RoHS compliant. Both meet flammability requirements at UL94 V-0.

Q: What is the significance of the 5.08mm pitch specification?

A: The 5.08mm pitch determines the spacing between contact positions and is critical for mechanical and electrical compatibility with mating connectors and PCB footprints. Any deviation renders the part incompatible.

Q: Can I use multiple 2-position headers instead of one 7-position header?

A: This would require redesign of the connector interface, PCB layout, and mechanical mounting structure. Such modifications fall outside the scope of direct component substitution.