SCRH64B-220 Equivalent & Substitute Parts

Part Overview

The SCRH64B-220 is a 22 µH shielded inductor manufactured by Signal Transformer, rated for 910 mA continuous current with a maximum DC resistance of 270mOhm. This component is designed for surface mount applications in nonstandard package configurations. The part is currently obsolete, making identification of compatible substitutes essential for ongoing production support and design continuity.

Substiute Parts

SCRH64B-220

Signal TransformerIn Stock: 891SCRH64B-220 Datasheet

Current PartRFQ

7447785122

Würth ElektronikIn Stock: 16597447785122 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH64B-220 is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with tolerance range compatible to ±20%
• Current Rating: Substitute must support minimum 910 mA continuous current
• DC Resistance: Maximum 270 mOhm to maintain equivalent power dissipation characteristics
• Shielding: Must be shielded to preserve electromagnetic isolation
• Operating Temperature: Must support -40°C to 125°C range
• Mounting Type: Surface mount configuration required
• Compliance: ROHS3 compliance and MSL 1 rating required

The Würth Elektronik 7447785122 meets these substitution criteria with enhanced specifications in current rating (1.35 A) and improved DC resistance (250 mOhm), while maintaining the same inductance value and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The SCRH64B-220 is obsolete and no longer available from the original manufacturer. The Würth Elektronik 7447785122 is the qualified substitute, offering active product status with continued manufacturing support.

The 7447785122 provides superior electrical performance with higher current rating (1.35 A versus 910 mA) and lower DC resistance (250 mOhm versus 270 mOhm). Both components maintain identical inductance values, operating temperature ranges, and compliance certifications (ROHS3, MSL 1).

Physical dimensions differ slightly, with the substitute being more compact (3.30mm height versus 5.20mm). PCB layout verification is required to confirm fit within existing design constraints.

Frequently Asked Questions (FAQ)

Q: Can the 7447785122 directly replace the SCRH64B-220 in existing designs?

A: Electrical compatibility is confirmed across all critical parameters: inductance, current rating, DC resistance, shielding, and operating temperature. Physical dimensions differ; PCB layout must be verified for mechanical fit.

Q: What is the tolerance difference between these parts?

A: The SCRH64B-220 has ±20% inductance tolerance, while the 7447785122 has ±25%. Both tolerances are acceptable for 22 µH applications within typical circuit design margins.

Q: Are there compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL 1 rating. The 7447785122 carries AEC-Q200 qualification, indicating automotive-grade reliability testing.

Q: How do the current ratings compare?

A: The SCRH64B-220 is rated for 910 mA continuous current. The 7447785122 supports 1.35 A, providing 48% additional current capacity. Saturation current (Isat) is 910 mA for the original part and 1.1 A for the substitute.

Q: What packaging is available for the substitute?

A: The 7447785122 is supplied in Tape & Reel (TR) packaging, standard for high-volume surface mount assembly.