Phoenix Contact 1859616 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Phoenix Contact 1859616 is a 12-position terminal block header with male pins, shrouded on four sides, featuring 0.200" (5.08mm) pitch spacing and vertical through-hole mounting. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The COMBICON EMSTBVA series part operates at 12A IEC current and 320V IEC voltage with press-fit termination technology.

Substiute Parts

1859616

Phoenix ContactIn Stock: 8731859616 Datasheet

Current PartRFQ

1755833

Phoenix ContactIn Stock: 51011755833 Datasheet

SimilarRFQ

1955950

Phoenix ContactIn Stock: 10021955950 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Phoenix Contact 1859616 is determined by the following critical parameters:

Core Compatibility Parameters:

• Number of positions: 12
• Pitch spacing: 0.200" (5.08mm)
• Header orientation: Vertical
• Mounting type: Through hole
• Type configuration: Male pins, shrouded (4 side)
• Insulation height: 0.472" (12.00mm)
• Contact tail length: 0.154" (3.90mm)

Electrical Performance Parameters:

• Current rating: 12A minimum (IEC standard)
• Voltage rating: 300V minimum (UL standard)
• Contact mating finish: Tin

Compliance Parameters:

• Material flammability: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance status

The two identified substitute parts (1755833 and 1955950) maintain all core compatibility parameters while offering active product status and enhanced electrical specifications. Termination style differs from the original press-fit design, requiring PCB layout verification during implementation.

Parameter Comparison

Engineering Selection Recommendations

Phoenix Contact 1755833 (COMBICON MSTBVA Series)

Part 1755833 is the primary substitute for the obsolete 1859616. This active-status component maintains identical mechanical dimensions, pin configuration, and electrical performance at the UL standard (12A, 300V). The transition from press-fit to solder termination requires PCB design modification but provides superior long-term reliability through established solder joint technology. The polyamide housing material and ROHS3 compliance status support extended product lifecycle and regulatory continuity. IEC voltage rating of 630V exceeds the original specification, providing additional design margin.

Phoenix Contact 1955950 (COMBICON CCVA Series)

Part 1955950 serves as an alternative substitute with active product status and enhanced IEC voltage rating (400V). The liquid crystal polymer housing material offers improved thermal and mechanical properties compared to the original PBT material. However, the contact tail length of 0.102" (2.60mm) differs from the original 0.154" (3.90mm), requiring PCB footprint verification. The UL current rating of 10A is lower than the original 12A specification and must be evaluated against circuit requirements. The black housing color differs from the original green, which may impact visual assembly identification.

Compliance Considerations

Both substitute parts maintain UL94 V-0 flammability rating and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with existing environmental and reliability specifications. RoHS compliance status is maintained across all three parts, supporting regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can Phoenix Contact 1755833 be used as a direct replacement for 1859616?

A: Part 1755833 is mechanically and electrically compatible with 1859616 for applications requiring 12A at 300V UL or 12A at 320V IEC. The primary difference is termination technology: 1755833 uses solder termination instead of press-fit. PCB design must accommodate solder pads rather than press-fit holes. All other mechanical parameters, including pitch, position count, and insulation height, are identical.

Q: What is the difference between press-fit and solder termination?

A: Press-fit termination uses mechanical force to insert component leads into plated through-holes, creating a press-fit connection. Solder termination requires the component leads to be soldered to PCB pads. Press-fit technology allows component removal and replacement; solder termination is permanent. Solder termination typically provides superior long-term reliability and vibration resistance.

Q: Why does Phoenix Contact 1955950 have a shorter contact tail length?

A: The contact tail length of 0.102" (2.60mm) for part 1955950 differs from the original 0.154" (3.90mm). This dimension affects PCB hole depth and solder joint formation. PCB design must be verified to ensure adequate solder fillet formation and mechanical support. This part is suitable only for PCB designs that accommodate the shorter tail length.

Q: Are there voltage or current limitations when substituting these parts?

A: Part 1755833 maintains the original 12A current rating at 300V UL and exceeds the original 320V IEC specification with 630V IEC rating. Part 1955950 has a reduced UL current rating of 10A (versus 12A original) and 400V IEC rating. Applications requiring 12A at UL standard should use part 1755833. Applications with lower current requirements (10A or less) may use part 1955950.

Q: Do the substitute parts have the same housing material as the original?

A: No. The original 1859616 uses polybutylene terephthalate (PBT). Part 1755833 uses polyamide (PA) nylon, and part 1955950 uses liquid crystal polymer (LCP). All three materials maintain UL94 V-0 flammability rating. Material selection affects thermal performance, mechanical strength, and chemical resistance. Design verification is recommended for applications with specific material requirements.

Q: What is the inventory status of these substitute parts?

A: Part 1755833 has 5027 pieces in stock. Part 1955950 has 935 pieces in stock. Both parts are active products with established supply chains, providing long-term availability compared to the obsolete 1859616.