SCRH4D14R-100 Equivalent & Substitute Parts

Part Overview

The SCRH4D14R-100 is a 10 µH shielded inductor manufactured by Signal Transformer, rated for 840 mA continuous current with a maximum DC resistance of 285 mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across an industrial temperature range of -40°C to 125°C and is mounted as a surface mount device in a nonstandard 4.10mm × 4.10mm package footprint.

Substiute Parts

SCRH4D14R-100

Signal TransformerIn Stock: 1137SCRH4D14R-100 Datasheet

Current PartRFQ

VLCF4020T-100MR85

TDK CorporationIn Stock: 30872VLCF4020T-100MR85 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH4D14R-100 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Inductance value: 10 µH (primary functional requirement)
• Inductance tolerance: ±30% or better
• Current rating: minimum 840 mA continuous
• Saturation current: minimum 600 mA
• DC resistance: 285 mOhm or lower (lower DCR preferred for reduced losses)
• Shielding: shielded configuration required
• Operating temperature: -40°C to 125°C or equivalent range

Mechanical Compatibility Criteria:

• Mounting type: surface mount only
• Package footprint: 4.10mm × 4.10mm or compatible nonstandard dimensions
• Height constraint: 1.50mm seated height maximum or acceptable for board layout

Compliance Requirements:

• RoHS3 compliance mandatory
• MSL rating: 1 (Unlimited) or equivalent

The VLCF4020T-100MR85 qualifies as a direct substitute based on matching inductance, shielding, surface mount configuration, and regulatory compliance, with improvements in current rating and DC resistance performance.

Parameter Comparison

Engineering Selection Recommendations

The VLCF4020T-100MR85 is qualified as a direct substitute for the obsolete SCRH4D14R-100 based on the following engineering factors:

Functional Equivalence: Both parts deliver 10 µH inductance at 100 kHz test frequency with shielded construction and surface mount configuration. The substitute meets or exceeds all critical electrical parameters: current rating (850 mA vs. 840 mA), saturation current (850 mA vs. 600 mA), and provides superior DC resistance performance (185 mOhm vs. 285 mOhm).

Regulatory Compliance: Both components maintain ROHS3 compliance and MSL rating 1 (Unlimited), ensuring compatibility with modern manufacturing and storage requirements.

Product Availability: The VLCF4020T-100MR85 is classified as active with substantial inventory availability (30,800 pcs), providing reliable long-term procurement support compared to the obsolete status of the original part.

Physical Considerations: The substitute exhibits a slightly larger footprint (4.00mm × 4.00mm vs. 4.10mm × 4.10mm) and increased seated height (2.00mm vs. 1.50mm). Board layout verification is required to confirm accommodation of these dimensional differences.

Temperature Range: The substitute operates to 105°C maximum versus 125°C for the original part. Applications requiring operation above 105°C require alternative evaluation.

Frequently Asked Questions (FAQ)

Q: Can the VLCF4020T-100MR85 directly replace the SCRH4D14R-100 in existing designs?

A: The VLCF4020T-100MR85 qualifies as a functional substitute for applications operating within -40°C to 105°C. Physical board layout must accommodate the increased height (2.00mm vs. 1.50mm) and slightly larger footprint (4.00mm vs. 4.10mm). Applications requiring operation above 105°C require alternative component selection.

Q: What are the key electrical advantages of the substitute part?

A: The VLCF4020T-100MR85 provides improved DC resistance (185 mOhm vs. 285 mOhm), resulting in lower power dissipation and heat generation. Saturation current is significantly higher (850 mA vs. 600 mA), providing greater margin above the 840 mA continuous rating. Inductance tolerance is tighter (±20% vs. ±30%), improving circuit predictability.

Q: Are there any compliance or certification differences between these parts?

A: Both components maintain identical RoHS3 compliance and MSL rating 1 (Unlimited) status. No compliance barriers exist for substitution from a regulatory perspective.

Q: What is the impact of the different package dimensions?

A: The substitute part is 0.5mm taller (2.00mm vs. 1.50mm) and maintains similar lateral dimensions (4.00mm vs. 4.10mm). PCB layout and component clearance must be verified to ensure the increased height does not conflict with adjacent components or enclosure constraints.

Q: Why is the original part obsolete?

A: The SCRH4D14R-100 is classified as obsolete by the manufacturer. The VLCF4020T-100MR85 represents an active, in-production alternative with superior electrical performance and established supply chain availability.