SCX147-101 Equivalent & Substitute Parts

Part Overview

The SCX147-101 is an unshielded 2-coil inductor array manufactured by Signal Transformer, designed for surface mount applications. This component provides dual inductance configurations: 396.9 µH when coils are connected in series and 100 µH when connected in parallel. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

SCX147-101

Signal TransformerIn Stock: 718SCX147-101 Datasheet

Current PartRFQ

CTX100-4-R

Eaton - Electronics DivisionIn Stock: 5389CTX100-4-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCX147-101 is determined by the following critical parameters:

• Dual-coil inductor array configuration with series and parallel inductance values
• Inductance tolerance of ±20% allowing functionally equivalent values within this range
• Current ratings for both parallel (920 mA) and series (460 mA) configurations
• DC resistance specifications for parallel (303 mOhm Max) and series (1.21 Ohm Max) modes
• Surface mount packaging with nonstandard form factor
• Unshielded construction and compliance certifications (ROHS3, MSL 1)

The CTX100-4-R from Eaton - Electronics Division meets these substitution criteria through matching inductance configurations, current ratings, and DC resistance specifications within the defined tolerance band.

Parameter Comparison

Engineering Selection Recommendations

The CTX100-4-R is the qualified substitute for the obsolete SCX147-101 based on the following factors:

• Electrical equivalence: Parallel inductance of 99.23 µH falls within the ±20% tolerance band of the 100 µH specification. Series inductance matches exactly at 396.9 µH. Current ratings and DC resistance specifications are identical across both configurations.

• Active product status: The CTX100-4-R is classified as active, ensuring ongoing availability and manufacturing support, whereas the SCX147-101 is obsolete.

• Compliance alignment: Both components maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing and environmental standards.

• Physical considerations: The CTX100-4-R exhibits slightly reduced footprint dimensions (0.550" x 0.550" versus 0.567" x 0.567") and lower profile height (0.250" versus 0.276"), which may provide layout advantages in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: What makes the CTX100-4-R functionally equivalent to the SCX147-101?

A: Both components are 2-coil inductor arrays with matching series inductance (396.9 µH), identical current ratings (920 mA parallel / 460 mA series), and equivalent DC resistance specifications. The parallel inductance of 99.23 µH in the CTX100-4-R is within the ±20% tolerance band of the SCX147-101's 100 µH specification.

Q: Are there any physical compatibility concerns when substituting the CTX100-4-R for the SCX147-101?

A: The CTX100-4-R has a slightly smaller footprint (0.550" x 0.550" versus 0.567" x 0.567") and lower height (0.250" versus 0.276"). Both use nonstandard surface mount packages. PCB layout verification is necessary to confirm mechanical fit within the existing design.

Q: What is the significance of the product status difference between these parts?

A: The SCX147-101 is classified as obsolete, indicating discontinued manufacturing and limited availability. The CTX100-4-R is active, ensuring reliable supply chain access and ongoing manufacturer support for future production requirements.

Q: Do both parts meet the same compliance and environmental standards?

A: Yes. Both the SCX147-101 and CTX100-4-R are ROHS3 compliant with MSL 1 rating (unlimited moisture sensitivity). The CTX100-4-R additionally specifies an operating temperature range of -40°C to 85°C.

Q: What packaging format is available for the CTX100-4-R?

A: The CTX100-4-R is supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.