SCRH124-220 Equivalent & Substitute Parts

Part Overview

The SCRH124-220 is a 22 µH shielded inductor manufactured by Signal Transformer, rated for 3 A continuous current with a maximum DC resistance of 66 mOhm. 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 617 units in stock. Substitute parts are necessary when the primary part becomes unavailable, when inventory constraints require alternative sourcing, or when application requirements permit operation within the electrical and mechanical tolerances of equivalent components.

Substiute Parts

SCRH124-220

Signal TransformerIn Stock: 707SCRH124-220 Datasheet

Current PartRFQ

DRA124-220-R

Eaton - Electronics DivisionIn Stock: 2066DRA124-220-R Datasheet

MFR RecommendedRFQ

PA4303.223NLT

Pulse ElectronicsIn Stock: 2414PA4303.223NLT Datasheet

MFR RecommendedRFQ

UP2B-220-R

Eaton - Electronics DivisionIn Stock: 16278UP2B-220-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH124-220 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 22 µH ±20%
• Inductance tolerance: ±20%
• Mounting type: Surface Mount
• Package footprint compatibility: 12.50mm x 12.50mm base dimensions
• RoHS3 compliance
• MSL 1 rating

Secondary Compatibility Factors:

• Current rating: Substitute must support minimum 2.44 A (lowest among candidates)
• DC resistance: Substitute DCR must not exceed application thermal limits
• Shielding configuration: Shielded or unshielded based on EMI requirements
• Operating temperature range: Minimum -40°C to 85°C overlap required
• Saturation current: Determines headroom above rated current

The three substitute parts meet the primary matching criteria. Variations in current rating, DCR, shielding, and temperature range reflect different design approaches while maintaining the core 22 µH inductance specification.

Parameter Comparison

Engineering Selection Recommendations

DRA124-220-R (Eaton - Electronics Division) This substitute maintains shielded configuration and identical footprint dimensions (12.50mm x 12.50mm x 4.50mm). The current rating of 2.44 A is lower than the primary part, requiring verification that application peak current does not exceed this threshold. The saturation current of 4.16 A provides margin above rated current. DC resistance of 71 mOhm is 7.6% higher than the primary part. Extended operating temperature range to 165°C offers additional thermal headroom. AEC-Q200 rating indicates automotive-grade qualification. RoHS3 and MSL 1 compliance match the primary part.

PA4303.223NLT (Pulse Electronics) This substitute features ferrite drum core construction with shielded configuration and matching footprint (12.50mm x 12.50mm). Current rating of 2.5 A is lower than the primary part. DC resistance of 75 mOhm is 13.6% higher. Height of 5.00mm exceeds the primary part by 0.50mm, requiring PCB layout verification. Operating temperature range matches the primary part (-40°C to 125°C). Inductance test frequency of 1 kHz differs from the primary part's 100 kHz specification. RoHS3 and MSL 1 compliance are maintained.

UP2B-220-R (Eaton - Electronics Division) This substitute uses ferrite drum core wirewound construction with unshielded configuration. Footprint dimensions of 13.97mm x 10.41mm differ from the primary part, requiring PCB layout verification for fit. Height of 6.00mm is 1.50mm greater than the primary part. Current rating of 2.8 A approaches the primary part specification. DC resistance of 61.7 mOhm is 6.4% lower, providing improved thermal performance. Operating temperature range is limited to -40°C to 85°C, restricting use in higher temperature applications. Unshielded design may introduce EMI considerations in noise-sensitive circuits. RoHS3 and MSL 1 compliance are maintained. Highest inventory availability at 16263 units.

Frequently Asked Questions (FAQ)

Q: Can DRA124-220-R replace SCRH124-220 in all applications? A: DRA124-220-R is suitable for applications where the current requirement does not exceed 2.44 A continuous. The 71 mOhm DCR is acceptable for most thermal budgets. Identical footprint and height enable direct PCB substitution. Verify application current profile before selection.

Q: What is the impact of the unshielded UP2B-220-R design? A: Unshielded inductors generate external magnetic fields that may couple into nearby circuits, potentially causing EMI. Use UP2B-220-R only in applications where EMI is not a concern or where the circuit layout provides sufficient isolation. Shielded alternatives (DRA124-220-R or PA4303.223NLT) are preferred for noise-sensitive designs.

Q: Does the PA4303.223NLT height of 5.00mm create compatibility issues? A: The 0.50mm height increase must be verified against PCB clearance requirements and component placement constraints. If vertical space is limited, DRA124-220-R or SCRH124-220 are preferred due to their 4.50mm maximum height.

Q: Which substitute offers the best thermal performance? A: UP2B-220-R has the lowest DCR at 61.7 mOhm, resulting in the lowest resistive heating. However, its operating temperature range is limited to 85°C maximum. For applications requiring both low DCR and extended temperature operation, DRA124-220-R provides a balanced approach with 71 mOhm DCR and 165°C maximum temperature.

Q: Are all substitutes RoHS3 and MSL 1 compliant? A: Yes. All three substitute parts (DRA124-220-R, PA4303.223NLT, and UP2B-220-R) are RoHS3 compliant and rated MSL 1 (Unlimited), matching the primary part's compliance profile.

Q: What is the significance of the AEC-Q200 rating on DRA124-220-R? A: AEC-Q200 is an automotive-grade qualification standard. This rating indicates the part has undergone rigorous testing for automotive applications. If your application requires automotive-grade components, DRA124-220-R is the appropriate choice among the substitutes.

Q: Can I use PA4303.223NLT if my circuit operates at 1 kHz instead of 100 kHz? A: PA4303.223NLT is tested at 1 kHz, making it suitable for low-frequency applications. However, inductance values may vary at different frequencies due to core characteristics. Verify the inductance specification at your actual operating frequency before final selection.

Q: Which substitute has the highest inventory availability? A: UP2B-220-R has the highest inventory at 16263 units, followed by PA4303.223NLT at 2380 units and DRA124-220-R at 2038 units. Inventory levels should be considered for supply chain continuity planning.