SCRH8D28-680 Equivalent & Substitute Parts

Part Overview

The SCRH8D28-680 is a 68 µH shielded inductor manufactured by Signal Transformer, rated for 950 mA continuous current with a maximum DC resistance of 286 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is specified for 100 kHz inductance testing. The part is actively produced and ROHS3 compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within alternative electrical and mechanical specifications.

Substiute Parts

SCRH8D28-680

Signal TransformerIn Stock: 1270SCRH8D28-680 Datasheet

Current PartRFQ

CDRH8D38NP-680NC

Sumida America Components Inc.In Stock: 907CDRH8D38NP-680NC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH8D28-680 is permissible when the replacement component maintains the following critical parameters:

• Inductance value of 68 µH with ±30% tolerance
• Shielded construction to prevent electromagnetic interference
• Surface mount configuration compatible with standard PCB assembly processes
• Current rating sufficient to support 950 mA operation
• DC resistance within acceptable limits for the application
• Operating temperature range that encompasses or exceeds -40°C to 125°C
• ROHS3 compliance and MSL rating of 1 or better
• Tape & Reel packaging for automated assembly

The CDRH8D38NP-680NC from Sumida America Components Inc. meets these substitution criteria with equivalent inductance, shielding, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CDRH8D38NP-680NC qualifies as a direct substitute for the SCRH8D28-680 based on matching inductance specifications, equivalent shielding, and identical compliance certifications. Both components are ROHS3 compliant with MSL rating of 1, ensuring compatibility with standard manufacturing and storage protocols.

The substitute part provides a higher current rating of 1.08 A compared to the primary part's 950 mA specification, offering improved headroom for applications operating near maximum current limits. DC resistance values are equivalent within engineering tolerance, with the substitute at 290 mOhm versus 286 mOhm for the original.

The operating temperature range of the substitute extends to 100°C maximum, which is 25°C lower than the primary component's 125°C upper limit. This difference must be evaluated against specific application requirements. For circuits operating exclusively within the -40°C to 100°C window, the CDRH8D38NP-680NC presents no thermal limitations.

Both components are actively produced and available in Tape & Reel packaging suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CDRH8D38NP-680NC replace the SCRH8D28-680 in all applications?

A: The substitute is compatible for applications where the operating temperature does not exceed 100°C. If your circuit requires operation above 100°C, the primary SCRH8D28-680 must be retained due to its 125°C maximum rating.

Q: What is the significance of the current rating difference?

A: The CDRH8D38NP-680NC is rated for 1.08 A continuous current versus 950 mA for the SCRH8D28-680. This higher rating provides additional safety margin in circuits operating near the 950 mA threshold. Both parts are suitable for applications requiring 950 mA or less.

Q: Are the DC resistance values interchangeable?

A: Yes. The DC resistance values of 286 mOhm and 290 mOhm are equivalent for practical circuit design purposes, representing a negligible difference of 4 mOhm.

Q: Do both parts require identical PCB footprints?

A: Both components are surface mount inductors in nonstandard packages. Physical dimensions differ slightly: the SCRH8D28-680 measures 8.30mm × 8.30mm × 3.20mm height, while the CDRH8D38NP-680NC measures 8.00mm × 8.00mm × 4.00mm height. PCB layout verification is required to confirm mechanical compatibility.

Q: Are moisture sensitivity and RoHS compliance identical?

A: Both parts carry MSL rating of 1 (Unlimited) and ROHS3 compliance, ensuring equivalent handling, storage, and environmental requirements.

Q: What is the inductance tolerance specification?

A: Both the primary and substitute parts specify ±30% inductance tolerance at 100 kHz test frequency. This tolerance must be considered in circuit design calculations.