SCRH104-1R5 Equivalent & Substitute Parts

Part Overview

The SCRH104-1R5 is a 1.5 µH shielded inductor manufactured by Signal Transformer, rated for 5.8 A continuous current with a maximum DC resistance of 17mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SCRH104-1R5

Signal TransformerIn Stock: 879SCRH104-1R5 Datasheet

Current PartRFQ

DR1040-1R5-R

Eaton - Electronics DivisionIn Stock: 2935DR1040-1R5-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH104-1R5 is determined by the following critical parameters:

• Inductance Value: 1.5 µH with ±30% tolerance
• Current Rating: Minimum 5.8 A continuous current capability
• Saturation Current: Minimum 8 A
• DC Resistance: Maximum 17 mOhm
• Shielding: Shielded construction required
• Temperature Range: -40°C to 125°C minimum
• Mounting: Surface mount configuration
• Compliance: ROHS3 compliance required

The DR1040-1R5-R meets all substitution criteria with improved electrical performance characteristics while maintaining mechanical and environmental compatibility.

Parameter Comparison

Engineering Selection Recommendations

The DR1040-1R5-R is a qualified substitute for the obsolete SCRH104-1R5 based on the following factors:

Electrical Compatibility: The substitute part meets or exceeds all critical electrical parameters. The 1.5 µH inductance value is identical, and the ±30% tolerance specification is maintained. Current rating, saturation current, and DC resistance all exceed the original part requirements, providing improved performance margin.

Compliance Status: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings (MSL 1), ensuring regulatory and environmental compatibility in existing designs.

Product Availability: The DR1040-1R5-R is in active production status with confirmed inventory availability, whereas the SCRH104-1R5 is obsolete. This substitution ensures long-term procurement viability.

Physical Considerations: The substitute part has a slightly larger footprint (10.50mm x 10.30mm versus 10.10mm x 9.20mm) but features a lower seated height (4.00mm versus 5.00mm). PCB layout verification is required to confirm mechanical fit within the available space.

Frequently Asked Questions (FAQ)

Q: Can the DR1040-1R5-R be used as a direct replacement for the SCRH104-1R5?

A: Yes, the DR1040-1R5-R meets all electrical and environmental specifications required by the SCRH104-1R5. However, PCB layout must be verified due to the slightly larger footprint dimensions.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (Signal Transformer versus Eaton), product status (obsolete versus active), and physical dimensions. The substitute part offers superior electrical performance with lower DC resistance (8.1 mOhm versus 17 mOhm) and higher current ratings (6.5 A versus 5.8 A).

Q: Are there any compliance concerns with substitution?

A: No. Both parts are ROHS3 compliant with identical moisture sensitivity levels (MSL 1). Regulatory and environmental requirements are maintained.

Q: What should be verified before implementing this substitution?

A: Confirm that the PCB layout accommodates the substitute part's dimensions (10.50mm x 10.30mm footprint and 4.00mm maximum seated height). Electrical performance will be equivalent or improved.

Q: Why is the substitute part's DC resistance lower?

A: The DR1040-1R5-R uses drum core wirewound construction with ferrite material, which provides superior electrical characteristics compared to the original design. Lower DC resistance reduces power dissipation and heat generation in the circuit.

Q: Is the substitute part available in the same packaging format?

A: The DR1040-1R5-R is supplied in Tape & Reel (TR) packaging, whereas the original part packaging information is not specified. Confirm packaging requirements with your procurement process.