SCRH124B-680 Equivalent & Substitute Parts

Part Overview

The SCRH124B-680 is a 68 µH shielded inductor manufactured by Signal Transformer, rated for 1.6 A continuous current with a maximum DC resistance of 220mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently active in production with 659 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when application-specific requirements necessitate different electrical or mechanical characteristics within the allowable parameter range.

Substiute Parts

SCRH124B-680

Signal TransformerIn Stock: 748SCRH124B-680 Datasheet

Current PartRFQ

CDRH124NP-680MC

Sumida America Components Inc.In Stock: 1651CDRH124NP-680MC Datasheet

MFR RecommendedRFQ

DRA124-680-R

Eaton - Electronics DivisionIn Stock: 2044DRA124-680-R Datasheet

MFR RecommendedRFQ

UP2-680-R

Eaton - Electronics DivisionIn Stock: 993UP2-680-R Datasheet

MFR RecommendedRFQ

UP2B-680-R

Eaton - Electronics DivisionIn Stock: 2200UP2B-680-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH124B-680 is determined by the following critical parameters: inductance value (68 µH), inductance tolerance (±20%), DC resistance (220mOhm maximum), shielding configuration (shielded), current rating capability (minimum 1.6 A), surface mount packaging, and compliance certifications (ROHS3). The four qualified substitute parts meet these core electrical requirements while maintaining compatibility with the nonstandard surface mount footprint and operating temperature specifications. Variations in current saturation ratings, core material composition, and specific dimensional tolerances are permissible within the scope of electrical equivalency, provided the primary electrical parameters remain within specification.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts maintain active production status and ROHS3 compliance, ensuring regulatory alignment with the primary SCRH124B-680 part. The CDRH124NP-680MC from Sumida America Components Inc. provides the closest electrical match with identical inductance, tolerance, and maximum DC resistance specifications while maintaining shielded configuration. The DRA124-680-R from Eaton offers extended operating temperature capability to 165°C and includes AEC-Q200 automotive qualification. The UP2-680-R and UP2B-680-R variants feature unshielded construction with lower DC resistance values and higher current ratings, suitable for applications where electromagnetic shielding is not required. Selection between shielded and unshielded alternatives depends on circuit-level EMI considerations and application-specific design constraints.

Frequently Asked Questions (FAQ)

Q: Can UP2-680-R or UP2B-680-R be used as direct replacements for SCRH124B-680?

A: These unshielded alternatives meet the core electrical parameters (68 µH inductance, ±20% tolerance, surface mount packaging, ROHS3 compliance) but differ in shielding configuration. Substitution is valid only if the application does not require electromagnetic shielding. Verify circuit layout and EMI requirements before selection.

Q: What is the significance of the current rating differences among substitute parts?

A: The SCRH124B-680 is rated for 1.6 A continuous current. CDRH124NP-680MC and UP2B-680-R are rated at 1.5 A, while DRA124-680-R is rated at 1.454 A. These ratings remain within acceptable operating margins for applications designed for the primary part's 1.6 A specification. UP2-680-R exceeds the primary rating at 1.7 A, providing additional current capacity.

Q: How do DC resistance variations affect circuit performance?

A: DC resistance ranges from 178.7mOhm (UP2B-680-R) to 220mOhm (SCRH124B-680 and CDRH124NP-680MC). All values remain within the 220mOhm maximum specification. Lower resistance values reduce power dissipation and heat generation, while higher values remain compliant with the original design specification.

Q: Are there temperature range limitations for substitute selection?

A: The SCRH124B-680 operates from -40°C to 125°C. CDRH124NP-680MC operates to 100°C, UP2B-680-R to 85°C, and DRA124-680-R to 165°C. Selection must align with application temperature requirements. Applications requiring the full -40°C to 125°C range should use SCRH124B-680, CDRH124NP-680MC, or DRA124-680-R.

Q: What packaging considerations apply to these substitute parts?

A: All parts are surface mount with nonstandard packaging and MSL rating of 1 (Unlimited). Dimensional variations exist: CDRH124NP-680MC measures 12.00mm x 12.00mm, while SCRH124B-680 and DRA124-680-R measure 12.50mm x 12.50mm. UP2-680-R and UP2B-680-R have different footprints (13.74mm x 8.76mm and 13.97mm x 10.41mm respectively). PCB layout compatibility must be verified before substitution.