SCRH127B-470 Equivalent & Substitute Parts

Part Overview

The SCRH127B-470 is a 47 µH shielded inductor manufactured by Signal Transformer, designed for surface mount applications requiring fixed inductance in compact form factors. This component is rated for 2.62 A continuous current with a maximum DC resistance of 100mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is ROHS3 compliant, making it suitable for modern electronic assemblies. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Substiute Parts

SCRH127B-470

Signal TransformerIn Stock: 1192SCRH127B-470 Datasheet

Current PartRFQ

DRA127-470-R

Eaton - Electronics DivisionIn Stock: 1718DRA127-470-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH127B-470 is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value: 47 µH (within ±20% tolerance specification)
• Current rating: minimum 2.62 A continuous
• DC resistance: must not exceed 100mOhm maximum
• Shielding: shielded construction required
• Package dimensions: 12.50mm x 12.50mm x 8.00mm maximum height
• Mounting type: surface mount configuration
• Operating temperature range: must support -40°C to 125°C minimum

The DRA127-470-R qualifies as a direct substitute based on matching inductance value, current rating, shielded construction, identical package dimensions, and surface mount configuration. Both parts are tested at 100 kHz and maintain ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

Both the SCRH127B-470 and DRA127-470-R maintain Active product status and ROHS3 compliance. The DRA127-470-R offers enhanced performance characteristics within the same physical footprint: lower DC resistance (91mOhm versus 100mOhm maximum), higher saturation current (5.09A versus 2.5A), and extended operating temperature range (-40°C to 165°C versus -40°C to 125°C). The DRA127-470-R carries AEC-Q200 automotive qualification, indicating additional reliability screening. Selection between these parts should be based on application-specific requirements for temperature range, saturation margin, and regulatory compliance needs.

Frequently Asked Questions (FAQ)

Q: Can the DRA127-470-R replace the SCRH127B-470 in existing designs?

A: Yes. Both parts share identical inductance values, current ratings, DC resistance specifications within tolerance, shielding configuration, and package dimensions. The substitute part meets or exceeds all electrical and mechanical requirements of the original specification.

Q: What is the significance of the different DC resistance values?

A: The SCRH127B-470 specifies a maximum DC resistance of 100mOhm, while the DRA127-470-R measures 91mOhm. The substitute part operates within the original specification and provides lower resistive losses, which may improve circuit efficiency.

Q: Why does the DRA127-470-R have a higher saturation current rating?

A: The DRA127-470-R is rated for 5.09A saturation current compared to 2.5A for the SCRH127B-470. This indicates the substitute part maintains inductance stability at higher current levels, providing additional design margin for applications operating near the 2.62A continuous rating.

Q: Are there temperature range considerations for substitution?

A: The DRA127-470-R operates from -40°C to 165°C, exceeding the SCRH127B-470 range of -40°C to 125°C. For applications within the original -40°C to 125°C specification, both parts are functionally equivalent. Applications requiring operation above 125°C benefit from the extended range of the substitute part.

Q: Do package dimensions remain identical?

A: Yes. Both parts are configured in identical 12.50mm x 12.50mm x 8.00mm packages with surface mount configuration, ensuring direct mechanical compatibility in PCB layouts.

Q: What does AEC-Q200 qualification indicate for the DRA127-470-R?

A: AEC-Q200 is an automotive industry standard qualification demonstrating that the component has undergone enhanced reliability testing and screening. This certification is relevant for applications requiring automotive-grade component reliability.