SCRH64B-101 Equivalent & Substitute Parts

Part Overview

The SCRH64B-101 is a 100 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 420 mA with a maximum DC resistance of 1.03Ohm. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain the core electrical specifications while meeting current manufacturing and compliance standards.

Substiute Parts

SCRH64B-101

Signal TransformerIn Stock: 1037SCRH64B-101 Datasheet

Current PartRFQ

744778520

Würth ElektronikIn Stock: 2115744778520 Datasheet

MFR RecommendedRFQ

CDRH64BNP-101MC-B

Sumida America Components Inc.In Stock: 814CDRH64BNP-101MC-B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SCRH64B-101 is determined by the following criteria:

• Inductance value of 100 µH (±20% to ±25% tolerance acceptable)
• Current rating minimum of 420 mA
• DC resistance at or below 1.06Ohm Max
• Shielded construction
• Surface mount packaging
• Operating temperature range covering -40°C to 125°C
• ROHS3 compliance and MSL 1 rating

The substitute parts listed below satisfy these parameters and represent active production alternatives from established manufacturers.

Parameter Comparison

Engineering Selection Recommendations

744778520 (Würth Elektronik WE-PD Robust Series)

This part exceeds the current rating requirement at 650 mA and maintains DC resistance within specification at 1.06Ohm Max. The component carries AEC-Q200 automotive qualification and is in active production status. The operating temperature range matches the original specification. Selection of this part provides enhanced current margin and established supply continuity.

CDRH64BNP-101MC-B (Sumida CDRH64B Series)

This part matches the original DC resistance specification at 1.03Ohm Max and current rating at 430 mA. The inductance tolerance remains ±20%, identical to the original. The component is in active production status with established supply availability. The operating temperature range extends to 100°C, which covers standard industrial applications but does not extend to the full 125°C upper limit of the original specification.

Frequently Asked Questions (FAQ)

Q: Can the 744778520 be used as a direct replacement for SCRH64B-101?

A: Yes. The 744778520 meets all critical electrical parameters: 100 µH inductance, 650 mA current rating (exceeding the 420 mA requirement), and 1.06Ohm Max DC resistance (within tolerance of the 1.03Ohm specification). Both components are shielded surface mount inductors with identical operating temperature ranges and compliance certifications.

Q: What is the difference between the two substitute parts?

A: The 744778520 provides higher current capacity (650 mA vs. 430 mA) and is qualified to AEC-Q200 automotive standards. The CDRH64BNP-101MC-B matches the original DC resistance specification more closely and maintains identical inductance tolerance. The CDRH64BNP-101MC-B operating temperature maximum is 100°C, compared to 125°C for both the original and the 744778520.

Q: Are there package or footprint differences between these parts?

A: The SCRH64B-101 measures 0.256" L x 0.252" W x 0.205" H (6.50mm x 6.40mm x 5.20mm). The 744778520 measures 0.244" L x 0.232" W x 0.130" H (6.20mm x 5.90mm x 3.30mm). The CDRH64BNP-101MC-B measures 0.244" L x 0.232" W x 0.197" H (6.20mm x 5.90mm x 5.00mm). PCB layout verification is required for applications with height constraints.

Q: Which substitute part should be selected for applications requiring the full -40°C to 125°C temperature range?

A: The 744778520 maintains the complete -40°C to 125°C operating range. The CDRH64BNP-101MC-B is rated to -40°C to 100°C and is not suitable for applications requiring operation above 100°C.

Q: Are all parts RoHS compliant?

A: Yes. The SCRH64B-101, 744778520, and CDRH64BNP-101MC-B are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.