SCRH64B-680 Equivalent & Substitute Parts

Part Overview

The SCRH64B-680 is a 68 µH shielded inductor manufactured by Signal Transformer, rated for 510 mA with a maximum DC resistance of 630mOhm. This component is designed for surface mount applications in nonstandard package configurations. The part is currently obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

SCRH64B-680

Signal TransformerIn Stock: 1103SCRH64B-680 Datasheet

Current PartRFQ

CLF6045NIT-680M-D

TDK CorporationIn Stock: 4165CLF6045NIT-680M-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH64B-680 is determined by the following critical parameters:

• Inductance Value: 68 µH with ±20% tolerance
• Current Rating: Minimum 510 mA saturation current
• DC Resistance: Maximum 630mOhm
• Shielding: Shielded construction required
• Mounting: Surface mount configuration
• Compliance: ROHS3 compliant, MSL 1 rating

The CLF6045NIT-680M-D from TDK Corporation meets these core electrical and mechanical requirements while offering improved performance characteristics in current handling and DC resistance.

Parameter Comparison

Engineering Selection Recommendations

The CLF6045NIT-680M-D is a direct functional substitute for the SCRH64B-680. Both components maintain identical inductance values and tolerance specifications. The substitute part exceeds the original specifications in current handling capacity (810 mA versus 510 mA) and provides superior DC resistance performance (240mOhm maximum versus 630mOhm maximum). Both parts maintain ROHS3 compliance and MSL 1 moisture sensitivity ratings.

The TDK component carries active product status with AEC-Q200 automotive qualification, ensuring long-term availability and supply chain stability compared to the obsolete Signal Transformer part. The extended operating temperature range (-55°C to 150°C versus -40°C to 125°C) provides additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the CLF6045NIT-680M-D directly replace the SCRH64B-680 in existing designs?

A: Yes. Both components share identical inductance values (68 µH ±20%), shielded construction, surface mount configuration, and compliance certifications. The substitute part meets or exceeds all electrical specifications of the original component.

Q: What are the physical dimension differences between these parts?

A: The SCRH64B-680 measures 0.256" L x 0.252" W x 0.205" H (6.50mm x 6.40mm x 5.20mm). The CLF6045NIT-680M-D measures 0.248" L x 0.236" W x 0.189" H (6.30mm x 6.00mm x 4.80mm). Both use nonstandard package configurations with minimal dimensional variance suitable for PCB layout compatibility.

Q: Does the lower DC resistance of the substitute part affect circuit performance?

A: The CLF6045NIT-680M-D provides 240mOhm maximum DC resistance compared to 630mOhm maximum in the original part. This represents improved performance with reduced resistive losses and lower heat generation in the inductor element.

Q: Are both parts suitable for automotive applications?

A: The CLF6045NIT-680M-D carries AEC-Q200 automotive qualification. The SCRH64B-680 does not list automotive certification. For automotive designs, the TDK substitute is the appropriate selection.

Q: What is the packaging format for the substitute part?

A: The CLF6045NIT-680M-D is supplied in Tape & Reel (TR) format, standard for high-volume surface mount production. The original SCRH64B-680 packaging format is not specified in available documentation.