SCRH124-680 Equivalent & Substitute Parts

Part Overview

The SCRH124-680 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 777 units in stock.

Substitute parts are necessary when the original SCRH124-680 becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design flexibility permits selection from qualified alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

SCRH124-680

Signal TransformerIn Stock: 831SCRH124-680 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 SCRH124-680 is determined by the following critical parameters:

Primary Electrical Criteria:

• Inductance value: 68 µH ±20%
• Current rating: minimum 1.6 A
• DC resistance: maximum 220mOhm
• Inductance test frequency: 100 kHz

Physical & Environmental Criteria:

• Mounting type: Surface Mount
• Shielding requirement: Shielded
• Operating temperature range: must encompass -40°C to 125°C or be compatible with application requirements
• RoHS3 compliance

Packaging Criteria:

• Tape & Reel (TR) packaging
• Nonstandard package case
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped based on whether they meet all primary electrical criteria while maintaining shielded construction. Variations in core material, inductor type (wirewound vs. other), and exact dimensional tolerances are permitted provided electrical performance remains within specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Shielded Category): CDRH124NP-680MC from Sumida America Components Inc. meets the shielded inductor requirement with matching inductance, tolerance, and DC resistance specifications. Operating temperature range extends to 100°C, which is within the primary part's lower bound. RoHS3 compliance and MSL 1 rating are equivalent. This part is recommended for direct substitution in applications where shielding is mandatory.

Alternative Substitutes (Unshielded Category): UP2-680-R and UP2B-680-R from Eaton are unshielded wirewound inductors. These parts meet the electrical specifications for inductance and tolerance but feature lower DC resistance values and higher current ratings. Selection of unshielded alternatives is permissible only when electromagnetic shielding is not a circuit requirement. UP2-680-R provides the highest current rating at 1.7 A. UP2B-680-R operates to 85°C maximum, which is below the primary part's upper temperature limit.

Extended Temperature Substitute: DRA124-680-R from Eaton - Electronics Division is a shielded wirewound inductor with extended operating temperature range to 165°C and AEC-Q200 automotive qualification. This part is suitable for applications requiring higher temperature operation or automotive-grade reliability. Current rating of 1.454 A is below the primary part specification and must be evaluated against circuit requirements.

All substitute parts maintain RoHS3 compliance, MSL 1 rating, and surface mount packaging compatibility with the original SCRH124-680.

Frequently Asked Questions (FAQ)

Q: Can CDRH124NP-680MC be used as a direct replacement for SCRH124-680? A: Yes. CDRH124NP-680MC meets all primary electrical criteria: 68 µH inductance, ±20% tolerance, 220mOhm maximum DC resistance, shielded construction, and surface mount packaging. Operating temperature range to 100°C covers the lower portion of the original part's range. RoHS3 and MSL 1 compliance are equivalent.

Q: Why are UP2-680-R and UP2B-680-R listed as substitutes if they are unshielded? A: These parts are listed because they meet the core electrical specifications for inductance, tolerance, and current rating. However, they are unshielded inductors. Selection of these parts is only appropriate when the circuit design does not require electromagnetic shielding. Applications sensitive to EMI or requiring shielded construction must use CDRH124NP-680MC or DRA124-680-R.

Q: What is the significance of the current rating differences among substitutes? A: The SCRH124-680 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 lower ratings must be evaluated against actual circuit current requirements. UP2-680-R at 1.7 A exceeds the original specification. Current rating selection must ensure the inductor does not saturate or exceed thermal limits in the application.

Q: Are there temperature range limitations when substituting? A: Yes. The SCRH124-680 operates from -40°C to 125°C. CDRH124NP-680MC is limited to 100°C maximum, which restricts use in high-temperature applications. UP2B-680-R is limited to 85°C. DRA124-680-R extends to 165°C and is suitable for elevated temperature environments. Verify that the substitute part's temperature range encompasses the application's operating conditions.

Q: What is the difference between shielded and unshielded inductors in circuit performance? A: Shielded inductors contain a magnetic shield that confines the magnetic field, reducing electromagnetic interference with adjacent components. Unshielded inductors allow the magnetic field to radiate freely. Selection depends on circuit layout and EMI sensitivity. Shielded construction is required in noise-sensitive applications or when components are densely packed.

Q: Do all substitute parts use the same core material? A: No. CDRH124NP-680MC uses ferrite core material. UP2B-680-R uses ferrite drum core construction. DRA124-680-R and UP2-680-R do not specify core material in the provided data. Core material affects inductor characteristics including temperature coefficient, frequency response, and saturation behavior. Verify core material compatibility with application requirements.

Q: Is AEC-Q200 qualification important for this application? A: AEC-Q200 is an automotive-grade reliability qualification. DRA124-680-R carries this rating. If the application is automotive or requires automotive-grade component reliability, DRA124-680-R is the appropriate selection. For non-automotive applications, AEC-Q200 qualification is not a requirement.