SCRH125-120 Equivalent & Substitute Parts

Part Overview

The SCRH125-120 is a 12 µH shielded surface mount inductor manufactured by Signal Transformer, designed for applications requiring fixed inductance with moderate current handling. This Active product is specified for 5.22 A continuous current rating with 27 mOhm maximum DC resistance and operates across the industrial temperature range of -40°C to 125°C. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

SCRH125-120

Signal TransformerIn Stock: 984SCRH125-120 Datasheet

Current PartRFQ

CDRH127NP-120MC

Sumida America Components Inc.In Stock: 3125CDRH127NP-120MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH125-120 is determined by the following critical parameters:

• Inductance Value: Must be 12 µH with ±20% tolerance
• Shielding Type: Must be shielded construction
• Mounting Configuration: Must be surface mount
• Current Rating: Substitute must support minimum 5.22 A continuous current
• DC Resistance: Substitute DCR must not exceed 27 mOhm maximum
• Operating Temperature: Substitute must support at least the -40°C to 125°C range, or a subset thereof
• RoHS Compliance: Must maintain ROHS3 compliance status
• Moisture Sensitivity: MSL rating of 1 (Unlimited) preferred

The CDRH127NP-120MC from Sumida America Components Inc. qualifies as an equivalent substitute based on matching inductance value, shielding, surface mount configuration, and compliance certifications, with acceptable variations in current rating and DCR within application tolerances.

Parameter Comparison

Engineering Selection Recommendations

Selection between SCRH125-120 and CDRH127NP-120MC shall be based on the following criteria:

Use SCRH125-120 when:

• Operating temperature environment reaches or exceeds 100°C
• Current demand approaches or exceeds 5.0 A continuous
• PCB layout constraints require the smaller 6.00 mm height profile

Use CDRH127NP-120MC when:

• Operating temperature remains below 100°C
• Current requirement is 4.9 A or lower
• Lower DC resistance (24.3 mOhm vs. 27 mOhm) provides performance advantage
• PCB layout accommodates the 8.00 mm height
• Supply chain availability or cost considerations favor Sumida components

Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring equivalent environmental and regulatory compatibility.

Frequently Asked Questions (FAQ)

Q: Can CDRH127NP-120MC replace SCRH125-120 in all applications?

A: Substitution is application-dependent. The CDRH127NP-120MC has a lower current rating (4.9 A vs. 5.22 A) and reduced maximum operating temperature (100°C vs. 125°C). Verify that your application does not require continuous current above 4.9 A and does not operate above 100°C.

Q: What is the impact of the different physical dimensions?

A: The CDRH127NP-120MC has a smaller footprint (12.00 x 12.00 mm vs. 12.50 x 12.50 mm) but greater height (8.00 mm vs. 6.00 mm). PCB layout and component clearance must be evaluated for your specific design.

Q: Does the lower DC resistance of the substitute part affect performance?

A: Lower DC resistance (24.3 mOhm vs. 27 mOhm maximum) is generally favorable, reducing resistive losses and heat generation. This does not negatively impact substitution compatibility.

Q: Are both parts equally available?

A: Inventory levels differ. CDRH127NP-120MC shows 3100 pieces in stock versus 933 pieces for SCRH125-120. Verify current availability with your supplier.

Q: Do both parts have identical compliance certifications?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating. REACH status differs: SCRH125-120 is REACH Unaffected; CDRH127NP-120MC is Vendor Undefined. Confirm REACH requirements for your end application.