SCM039100 Equivalent & Substitute Parts

Part Overview

The SCM039100 is a 3-position wire-to-board terminal block manufactured by Amphenol PCD, designed for vertical PCB mounting with top entry wire connection. This component is classified as Active product status and is RoHS compliant. Terminal block substitution becomes necessary when addressing specific application requirements such as mating orientation, current capacity, wire gauge compatibility, or packaging constraints that may differ from the original specification.

Substiute Parts

SCM039100

Amphenol PCDIn Stock: 1102SCM039100 Datasheet

Current PartRFQ

1869651

Phoenix ContactIn Stock: 10551869651 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCM039100 is limited to components that maintain compatibility across the following critical parameters:

• Position Count: 3 positions per level (fixed requirement)
• Pitch Tolerance: 0.197" (5.00mm) to 0.200" (5.08mm) pitch spacing (minor tolerance acceptable for PCB layout)
• Mounting Type: Through hole PCB mounting (fixed requirement)
• Voltage Rating: Minimum 300 V (equal or higher acceptable)
• Housing Material: Polyamide (PA), Nylon (material compatibility)
• Compliance: RoHS compliant status required

The substitute part 1869651 (Phoenix Contact COMBICON MKDSN series) meets the position count, pitch tolerance, mounting type, voltage rating, and housing material requirements. However, differences exist in mating orientation (horizontal vs. vertical), current capacity (10 A vs. 20 A), wire gauge support (18 AWG vs. 12-28 AWG), and wire termination method (screw-based vs. screwless). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the SCM039100 and 1869651 maintain Active product status and meet RoHS compliance requirements, ensuring long-term availability and regulatory conformance. Selection between these components depends on application-specific constraints:

The SCM039100 is the primary choice for applications requiring vertical PCB entry, higher current capacity (20 A), broader wire gauge support (12-28 AWG), and screwless termination. The 1869651 serves as a substitute only when horizontal PCB entry is acceptable, current requirements do not exceed 10 A, wire gauge is limited to 18 AWG, and screw-based termination is compatible with assembly processes.

The 0.003" (0.08mm) pitch difference between components is within standard PCB layout tolerance for through-hole mounting and does not typically require PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the 1869651 directly replace the SCM039100 without PCB modification?

A: Direct replacement requires PCB layout compatibility. The pitch difference of 0.003" (0.08mm) is within standard tolerance for through-hole mounting. However, the mating orientation change from vertical to horizontal entry requires physical space verification on the PCB. Wire entry direction and connector approach angle must be confirmed against board layout constraints.

Q: What are the current capacity implications of substitution?

A: The SCM039100 supports 20 A maximum current, while the 1869651 is rated for 10 A. Substitution is only valid for applications where circuit current does not exceed 10 A. Exceeding this rating on the substitute part creates thermal and safety risks.

Q: Are the wire termination methods interchangeable?

A: No. The SCM039100 uses screwless spring cage termination, while the 1869651 requires screw-based termination with M3 thread and 0.5-0.6 Nm torque specification. Assembly procedures, tooling, and maintenance protocols differ between these termination methods.

Q: Does the wire gauge difference affect substitution?

A: The SCM039100 accommodates 12-28 AWG wire, while the 1869651 is specified for 18 AWG only. Substitution is valid only when wire gauge falls within the 18 AWG specification. Larger gauge conductors (12-17 AWG) cannot be reliably terminated in the 1869651.

Q: Are both components suitable for the same operating temperature range?

A: The SCM039100 is rated to 125°C. Operating temperature specification for the 1869651 was not provided in the component data. Thermal performance must be independently confirmed for the substitute part before deployment in high-temperature applications.

Q: What packaging differences exist between these components?

A: The SCM039100 is supplied in Tray packaging, while the 1869651 is supplied in Bulk packaging. Inventory management, handling procedures, and component counting methods differ accordingly.