SCRH104-120 Equivalent & Substitute Parts

Part Overview

The SCRH104-120 is a 12 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 3 A continuous current with a maximum DC resistance of 54 mOhm. This component is classified as obsolete, making identification of suitable equivalent parts essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, shielding characteristics, and operating temperature range to ensure functional compatibility in existing circuit designs.

Substiute Parts

SCRH104-120

Signal TransformerIn Stock: 1156SCRH104-120 Datasheet

Current PartRFQ

#B952AS-H-120M=P3

Murata ElectronicsIn Stock: 803#B952AS-H-120M=P3 Datasheet

MFR RecommendedRFQ

CDRH10D43RNP-120MC

Sumida America Components Inc.In Stock: 960CDRH10D43RNP-120MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCRH104-120 are qualified based on the following critical parameters:

• Inductance Value: Must be 12 µH with ±20% tolerance
• Shielding: Must be shielded to maintain electromagnetic isolation
• Mounting Type: Must be surface mount compatible
• Current Rating: Must support minimum 3 A continuous current
• DC Resistance: Must not exceed 54 mOhm to maintain power efficiency
• Operating Temperature: Must support the full -40°C ~ 125°C range or a subset thereof
• Inductance Test Frequency: Must be characterized at 100 kHz
• Compliance: Must maintain ROHS3 compliance

The two qualified substitutes meet these criteria while offering active product status and improved availability compared to the obsolete SCRH104-120.

Parameter Comparison

Engineering Selection Recommendations

#B952AS-H-120M=P3 (Murata Electronics): This substitute offers superior DC resistance (51 mOhm vs. 54 mOhm) and improved saturation current (3.3 A vs. 2.25 A). However, the current rating of 2.5 A is below the original 3 A specification, and the maximum operating temperature is limited to 85°C compared to the original 125°C. This part is suitable for applications where the 2.5 A rating is sufficient and operating temperatures do not exceed 85°C. Active product status ensures long-term availability.

CDRH10D43RNP-120MC (Sumida America Components Inc.): This substitute exceeds the original specifications with a 3.2 A current rating, superior saturation current (4.9 A vs. 2.25 A), and lower DC resistance (47.2 mOhm vs. 54 mOhm). The maximum operating temperature of 105°C is lower than the original 125°C but suitable for most industrial applications. This part provides the best electrical performance match and active product status for sustained supply.

Both substitutes maintain ROHS3 compliance, MSL Level 1 rating, and shielded construction. Selection between them depends on specific application requirements regarding current capacity and maximum operating temperature.

Frequently Asked Questions (FAQ)

Q: Can the #B952AS-H-120M=P3 be used as a direct replacement for the SCRH104-120?

A: The #B952AS-H-120M=P3 is functionally equivalent for inductance and DC resistance characteristics. However, the 2.5 A current rating is 0.5 A below the original specification, and the operating temperature maximum is limited to 85°C. Use this substitute only if your application operates within these reduced parameters.

Q: What are the physical dimension differences between substitutes?

A: The SCRH104-120 measures 0.398" L x 0.362" W x 0.197" H (10.10mm x 9.20mm x 5.00mm). The #B952AS-H-120M=P3 measures 0.409" L x 0.409" W x 0.189" H (10.40mm x 10.40mm x 4.80mm). The CDRH10D43RNP-120MC measures 0.406" L x 0.394" W x 0.177" H (10.30mm x 10.00mm x 4.50mm). Verify PCB layout compatibility before substitution.

Q: Are both substitutes available in the same packaging format?

A: Both substitutes are supplied in Tape & Reel (TR) packaging, which differs from the original part's packaging specification. Confirm compatibility with your assembly process requirements.

Q: Which substitute offers the best electrical performance?

A: The CDRH10D43RNP-120MC provides superior electrical characteristics with the lowest DC resistance (47.2 mOhm), highest saturation current (4.9 A), and highest current rating (3.2 A). It also supports operation to 105°C, closer to the original 125°C specification.

Q: Are both substitutes ROHS3 compliant?

A: Yes, both substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the original part's regulatory status.