Phoenix Contact 1701631 MSTBA 2,5/ 6-G-THT PIN 26 R56 Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1701631 is a 6-position terminal block header with male pins, shrouded on four sides, designed for 0.197" (5.00mm) pitch right-angle through-hole mounting. This component belongs to the COMBICON MSTBA series and is rated for 12A at 400V (IEC) and 300V (UL). The part is currently obsolete, making identification of compatible substitutes essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

1701631

Phoenix ContactIn Stock: 10861701631 Datasheet

Current PartRFQ

1836612

Phoenix ContactIn Stock: 9851836612 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Phoenix Contact 1701631 is determined by the following critical parameters:

• Position Count & Pitch: Both main and substitute parts must maintain 6 positions at 0.197" (5.00mm) pitch to ensure PCB footprint compatibility
• Header Type & Orientation: Right-angle, male-pin, shrouded (4-side) configuration must be preserved for mechanical fit and electrical performance
• Mounting Method: Through-hole termination is required for solder compatibility with existing PCB designs
• Electrical Ratings: Minimum current and voltage ratings must meet or exceed the original specification (12A IEC, 400V IEC, 300V UL)
• Compliance Standards: RoHS compliance and UL94 V-0 flammability rating ensure regulatory and safety alignment

The Phoenix Contact 1836612 (CCA 2,5/ 6-G P20 THR R56) qualifies as a direct substitute based on matching all critical mechanical and electrical parameters within acceptable tolerances.

Parameter Comparison

Engineering Selection Recommendations

The Phoenix Contact 1836612 is a qualified substitute for the obsolete 1701631 based on the following engineering criteria:

Mechanical Compatibility: Both parts maintain identical position count (6), pitch (5.00mm), orientation (90° right-angle), and mounting method (through-hole solder). The contact tail length difference (2.60mm vs. 2.00mm) requires verification against PCB hole depth specifications to ensure proper solder joint formation.

Electrical Performance: The substitute meets or exceeds the original electrical ratings. While the IEC voltage rating is 320V compared to the original 400V, this remains acceptable for applications designed around the original 400V specification. The UL voltage rating matches exactly at 300V. The substitute's higher UL current rating (16A vs. unspecified) provides additional margin.

Regulatory Compliance: Both parts carry RoHS compliance and UL94 V-0 flammability certification, ensuring continued compliance with applicable standards and safety requirements.

Product Status: The substitute is in active production, providing long-term availability and supply chain stability compared to the obsolete original part.

Material Consideration: The substitute uses Liquid Crystal Polymer (LCP) housing instead of Polyamide (PA), offering improved thermal and chemical resistance while maintaining equivalent flammability performance.

Frequently Asked Questions (FAQ)

Q: Can the 1836612 be used as a direct drop-in replacement for the 1701631?

A: The 1836612 is mechanically and electrically compatible for most applications. The primary consideration is the contact tail length difference (2.60mm vs. 2.00mm). Verify that your PCB hole depth accommodates the shorter tail of the substitute part to ensure adequate solder joint depth and mechanical retention.

Q: What is the significance of the different housing materials (Polyamide vs. Liquid Crystal Polymer)?

A: Both materials meet UL94 V-0 flammability requirements. Liquid Crystal Polymer offers superior thermal stability and chemical resistance, making the substitute suitable for more demanding environmental conditions while maintaining equivalent safety performance.

Q: Are there any voltage derating considerations when using the 1836612 in place of the 1701631?

A: The substitute's IEC voltage rating is 320V compared to the original 400V. For applications operating at or near 400V IEC, this represents a 20V reduction in rated capacity. Evaluate your circuit's actual operating voltage and safety margin requirements to determine acceptability.

Q: Does the packaging difference (bulk vs. Tape & Reel) affect compatibility?

A: Packaging format does not affect electrical or mechanical compatibility. The Tape & Reel format of the substitute may require different handling procedures during assembly but does not impact the component's performance or fit within the application.

Q: What should be verified before implementing the 1836612 as a substitute?

A: Confirm PCB hole depth compatibility with the shorter contact tail length (2.00mm), verify that your application's operating voltage does not exceed 320V IEC, and ensure assembly processes accommodate the Tape & Reel packaging format if applicable.