SCRH124B-331 Equivalent & Substitute Parts

Part Overview

The SCRH124B-331 is a 330 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 780 mA continuous current with a maximum DC resistance of 990 mOhm. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when applications require alternative sourcing, higher current ratings, extended temperature ranges, or different shielding configurations while maintaining the core electrical specifications of 330 µH inductance at ±20% tolerance and 100 kHz test frequency.

Substiute Parts

SCRH124B-331

Signal TransformerIn Stock: 935SCRH124B-331 Datasheet

Current PartRFQ

DR124-331-R

Eaton - Electronics DivisionIn Stock: 1929DR124-331-R Datasheet

MFR RecommendedRFQ

DRA124-331-R

Eaton - Electronics DivisionIn Stock: 1868DRA124-331-R Datasheet

MFR RecommendedRFQ

UP2-331-R

Eaton - Electronics DivisionIn Stock: 1970UP2-331-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH124B-331 is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 330 µH
• Inductance tolerance: ±20%
• Mounting type: Surface Mount
• Package footprint: 12.50mm x 12.50mm (length x width)
• Inductance test frequency: 100 kHz
• RoHS compliance: ROHS3 or equivalent

Secondary Compatibility Parameters:

• Current rating: minimum 780 mA or higher
• DC resistance: 990 mOhm or lower
• Shielding configuration: Shielded (primary), Unshielded (application-dependent)
• Operating temperature range: -40°C minimum, 125°C minimum
• Saturation current: 500 mA or higher

The three substitute parts (DR124-331-R, DRA124-331-R, UP2-331-R) maintain identical inductance specifications and footprint dimensions. Variations exist in current ratings, DC resistance, shielding type, and temperature ranges, which determine suitability for specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

DR124-331-R (Eaton - Electronics Division): This substitute provides the highest current rating at 830 mA with improved saturation current of 920 mA. The ferrite drum core construction maintains shielding characteristics identical to the SCRH124B-331. DC resistance remains at 990 mOhm maximum, and operating temperature range matches the original specification. Height is reduced to 4.50mm. ROHS3 compliance and Active product status confirm long-term availability.

DRA124-331-R (Eaton - Electronics Division): This option offers the lowest DC resistance at 892 mOhm and the highest saturation current at 1.092 A, providing superior performance margin. Extended operating temperature range to 165°C accommodates high-temperature applications. Current rating of 690 mA is below the original specification and requires circuit validation. AEC-Q200 rating indicates automotive-grade qualification. Height is 4.50mm. ROHS3 compliance and Active product status are confirmed.

UP2-331-R (Eaton - Electronics Division): This substitute features an unshielded configuration suitable for applications where EMI containment is not required. Current rating of 760 mA and DC resistance of 977.5 mOhm are comparable to the original. Footprint dimensions differ (13.74mm x 8.76mm) and height is increased to 5.86mm, requiring PCB layout verification. Operating temperature range is not specified. RoHS compliance is confirmed; product status is Active.

Frequently Asked Questions (FAQ)

Q: Can DR124-331-R directly replace SCRH124B-331 in all applications?

A: DR124-331-R is a direct substitute for applications requiring the same 330 µH inductance, ±20% tolerance, and shielded surface mount configuration. The higher current rating (830 mA vs. 780 mA) and improved saturation current (920 mA vs. 500 mA) provide additional performance margin. Identical operating temperature range (-40°C ~ 125°C), DC resistance (990 mOhm max), and footprint dimensions (12.50mm x 12.50mm) confirm compatibility. Reduced height (4.50mm vs. 4.80mm) must be verified against PCB clearance requirements.

Q: When should DRA124-331-R be selected over the original SCRH124B-331?

A: DRA124-331-R is selected for applications requiring lower DC resistance (892 mOhm vs. 990 mOhm), higher saturation current (1.092 A vs. 500 mA), or extended operating temperature to 165°C. The 690 mA current rating is lower than the original 780 mA specification and requires circuit analysis to confirm adequacy. AEC-Q200 automotive qualification makes this part suitable for automotive and high-reliability applications. Identical footprint and shielding maintain mechanical and electromagnetic compatibility.

Q: Is UP2-331-R suitable as a substitute if shielding is not critical?

A: UP2-331-R is suitable for applications where electromagnetic shielding is not required. The unshielded configuration reduces height and cost. Current rating (760 mA) and DC resistance (977.5 mOhm) are comparable to the original. Footprint dimensions differ (13.74mm x 8.76mm vs. 12.50mm x 12.50mm), and height increases to 5.86mm, requiring PCB layout redesign. Operating temperature range is not specified in available data. RoHS compliance is confirmed.

Q: Are all substitute parts available in Tape & Reel packaging?

A: All substitute parts (DR124-331-R, DRA124-331-R, UP2-331-R) are supplied in Tape & Reel (TR) packaging, matching the original SCRH124B-331 packaging format. This ensures compatibility with automated assembly processes and standard component handling procedures.

Q: What compliance certifications apply to these inductors?

A: SCRH124B-331, DR124-331-R, and DRA124-331-R are ROHS3 compliant. UP2-331-R is RoHS compliant. All parts are REACH unaffected and classified under ECCN EAR99. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no moisture precautions are required during storage or handling.