SCM039100L Equivalent & Substitute Parts

Part Overview

The SCM039100L 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 blocks of this type are essential in applications requiring reliable electrical connections between external wiring and printed circuit boards, particularly in industrial control, power distribution, and signal routing applications. Substitute parts may be required due to supply constraints, design revisions, or specific application requirements that demand alternative mechanical or electrical characteristics.

Substiute Parts

SCM039100L

Amphenol PCDIn Stock: 1188SCM039100L Datasheet

Current PartRFQ

1869651

Phoenix ContactIn Stock: 10551869651 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCM039100L is determined by the following critical parameters:

• Position Count: Must be 3 positions per level to maintain PCB layout compatibility
• Pitch Tolerance: Acceptable range is 0.197" to 0.200" (5.00mm to 5.08mm) to accommodate standard PCB hole spacing
• Mounting Type: Must be Through Hole to match existing PCB design
• Voltage Rating: Minimum 300 V to meet electrical safety requirements
• Current Rating: Minimum 10 A acceptable for applications with reduced current demands
• Wire Gauge Compatibility: Must support at least 18 AWG to 28 AWG range
• Housing Material: Polyamide (PA) or Nylon construction required for mechanical consistency
• RoHS Compliance: Must meet RoHS or ROHS3 standards for regulatory alignment

The substitute part 1869651 (Phoenix Contact COMBICON MKDSN series) meets these criteria with the following considerations: identical position count, compatible pitch specification, matching mounting type, equivalent voltage rating, and compliant material composition. Differences in mating orientation (horizontal vs. vertical), current rating (10 A vs. 20 A), and wire termination method (screw-based vs. screwless) represent design trade-offs that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the SCM039100L and 1869651 maintain Active product status and meet current regulatory compliance requirements (RoHS and ROHS3). The SCM039100L is recommended for applications requiring the full 20 A current capacity and support for wire gauges down to 12 AWG, particularly where screwless spring cage termination is preferred for rapid assembly. The 1869651 is suitable for applications with current demands of 10 A or less and where screw-based termination with M3 thread specification is acceptable. The pitch difference of 0.003" (0.08mm) is within standard PCB manufacturing tolerances for 5mm-class terminal block spacing. The mating orientation difference (vertical vs. horizontal entry) represents a significant mechanical design consideration and must be evaluated against specific enclosure and wiring routing constraints.

Frequently Asked Questions (FAQ)

Q: Can the 1869651 be used as a direct replacement for the SCM039100L?

A: Direct replacement is possible only if the application current requirement does not exceed 10 A, the PCB layout accommodates horizontal wire entry instead of vertical entry, and the 0.003" pitch tolerance is acceptable. The screw-based termination method of the 1869651 differs from the screwless spring cage design of the SCM039100L.

Q: What is the significance of the pitch difference between 5.00mm and 5.08mm?

A: The 0.08mm difference falls within standard PCB manufacturing tolerances for terminal block hole spacing. Both parts are classified as 5mm-pitch components and are compatible with standard 5mm terminal block footprints on most PCB designs.

Q: Are both parts suitable for high-temperature applications?

A: The SCM039100L is rated to 125°C operating temperature. The 1869651 does not specify an operating temperature limit in the provided data. Temperature rating must be confirmed with the manufacturer if the application requires sustained operation above 100°C.

Q: What are the wire gauge limitations of each part?

A: The SCM039100L accepts 12-28 AWG wire. The 1869651 is specified for 18 AWG only, representing a narrower range suitable for medium-gauge applications. Applications requiring 12-16 AWG wire must use the SCM039100L.

Q: How do the termination methods differ?

A: The SCM039100L uses screwless spring cage tension clamp termination, enabling tool-free wire insertion and removal. The 1869651 uses screw-based rising cage clamp termination with M3 thread specification, requiring a screwdriver for wire termination and adjustment.

Q: Are both parts RoHS compliant?

A: Yes. The SCM039100L is RoHS Compliant. The 1869651 is ROHS3 Compliant, representing an updated compliance standard. Both meet current regulatory requirements for restricted substance elimination.