SCRH4D14R-5R6 Equivalent & Substitute Parts

Part Overview

The SCRH4D14R-5R6 is a 5.6 µH shielded inductor manufactured by Signal Transformer, rated for 1.1 A continuous current with a maximum DC resistance of 186mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and is mounted as a surface mount device in a nonstandard 4.10mm x 4.10mm package footprint.

Substiute Parts

SCRH4D14R-5R6

Signal TransformerIn Stock: 815SCRH4D14R-5R6 Datasheet

Current PartRFQ

74437321056

Würth ElektronikIn Stock: 508074437321056 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH4D14R-5R6 is determined by the following critical parameters:

Inductance Value: 5.6 µH is the primary electrical specification. Substitute parts must match this value within acceptable tolerance ranges for the application.

Current Rating & Saturation Current: The main part supports 1.1 A continuous current with 700mA saturation current. Substitute parts must meet or exceed these current handling requirements to ensure reliable operation under specified load conditions.

DC Resistance (DCR): Maximum DCR of 186mOhm defines power loss characteristics. Substitute parts with comparable or lower DCR values maintain thermal performance and efficiency.

Shielding: Shielded construction is required to minimize electromagnetic interference in the target application. All substitutes must maintain shielded design.

Operating Temperature Range: -40°C to 125°C defines the thermal operating envelope. Substitute parts must support this full temperature range.

Mounting & Package Compatibility: Surface mount technology with 4.10mm x 4.10mm footprint and 1.50mm maximum height establishes physical constraints. Substitute parts must fit within these dimensional boundaries or be compatible with the PCB layout.

Compliance Standards: RoHS3 compliance and MSL Level 1 rating are mandatory for production and storage compatibility.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 74437321056 is an active production substitute for the obsolete SCRH4D14R-5R6. Both components meet identical inductance specifications at 5.6 µH and support the full -40°C to 125°C operating temperature range. Both are RoHS3 compliant with MSL Level 1 rating, ensuring compatibility with current manufacturing and storage protocols.

The 74437321056 provides superior electrical performance with higher current rating (1.7 A versus 1.1 A) and higher saturation current (2.7A versus 700mA), offering increased design margin for applications requiring sustained or transient current loads. The substitute part features tighter inductance tolerance (±20% versus ±30%), improving circuit predictability.

Physical compatibility is maintained with nearly identical footprint dimensions (4.06mm x 4.06mm versus 4.10mm x 4.10mm) and reduced height (1.20mm versus 1.50mm), allowing direct PCB layout substitution without redesign. The DC resistance specification (208mOhm Max versus 186mOhm Max) represents a minor increase of 22mOhm, which is acceptable for most power delivery and filtering applications within the specified current range.

Frequently Asked Questions (FAQ)

Q: Can the 74437321056 be used as a direct replacement for the SCRH4D14R-5R6?

A: Yes. Both parts share identical inductance value (5.6 µH), operating temperature range (-40°C to 125°C), shielding type, and compliance certifications (RoHS3, MSL Level 1). Physical footprint dimensions are nearly identical (4.06mm x 4.06mm versus 4.10mm x 4.10mm), permitting direct PCB substitution.

Q: What are the key differences between these parts?

A: The 74437321056 offers higher current rating (1.7 A versus 1.1 A), higher saturation current (2.7A versus 700mA), tighter inductance tolerance (±20% versus ±30%), and lower profile height (1.20mm versus 1.50mm). DC resistance is slightly higher (208mOhm Max versus 186mOhm Max).

Q: Does the higher DC resistance of the substitute part affect circuit performance?

A: The 22mOhm increase in maximum DC resistance is within acceptable limits for most applications. Power dissipation increase is proportional to I²R; at the main part's rated current of 1.1 A, the additional loss is approximately 26mW, which is typically negligible in inductor applications.

Q: Are there any thermal or reliability concerns with substitution?

A: No. Both parts operate across the identical temperature range and maintain equivalent thermal ratings. The substitute part's lower profile height (1.20mm) may provide marginal thermal benefits through improved PCB heat dissipation.

Q: What packaging format is the substitute part supplied in?

A: The 74437321056 is supplied in Tape & Reel (TR) format with 4012 supplier device package designation, suitable for automated assembly processes.