SCRH64B-471 Equivalent & Substitute Parts

Part Overview

The SCRH64B-471 is a 470 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 380 mA continuous current with a maximum DC resistance of 3.93Ohm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance standards.

Substiute Parts

SCRH64B-471

Signal TransformerIn Stock: 1200SCRH64B-471 Datasheet

Current PartRFQ

CDRH64BNP-471MC-B

Sumida America Components Inc.In Stock: 2437CDRH64BNP-471MC-B Datasheet

MFR RecommendedRFQ

CLF6045NIT-471M-D

TDK CorporationIn Stock: 1907CLF6045NIT-471M-D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SCRH64B-471 must maintain the following core electrical and mechanical parameters:

• Inductance value of 470 µH with ±20% tolerance
• Shielded construction for EMI suppression
• Surface mount packaging in nonstandard form factor
• ROHS3 compliance and MSL 1 rating
• Operating temperature range compatible with -40°C minimum

The two qualified substitutes differ in current rating capability and DC resistance characteristics. Selection depends on the specific current requirements of the application circuit.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing availability, addressing the obsolescence of the SCRH64B-471.

CDRH64BNP-471MC-B (Sumida) maintains identical DC resistance (3.93Ohm) and inductance test frequency (1 kHz) to the original part. This substitute is suitable for applications where current requirements do not exceed 200 mA. The operating temperature maximum of 100°C is lower than the original specification.

CLF6045NIT-471M-D (TDK) offers superior DC resistance performance at 1.56Ohm maximum, reducing power dissipation in the inductor. This part supports current ratings up to 280 mA and extends the operating temperature range to 150°C maximum. The inductance test frequency of 100 kHz differs from the original 1 kHz specification. This part carries AEC-Q200 automotive qualification.

Selection between substitutes depends on circuit current requirements and thermal operating conditions. The TDK part provides lower losses and wider temperature operation at the cost of different test frequency characterization.

Frequently Asked Questions (FAQ)

Q: Can CDRH64BNP-471MC-B replace SCRH64B-471 in all applications?

A: CDRH64BNP-471MC-B is suitable only for applications where the inductor current does not exceed 200 mA. If the circuit requires the full 380 mA rating of the original part, this substitute is not appropriate. Additionally, the maximum operating temperature of 100°C is lower than the original 125°C specification.

Q: What is the advantage of CLF6045NIT-471M-D over the Sumida substitute?

A: CLF6045NIT-471M-D provides lower DC resistance (1.56Ohm vs. 3.93Ohm), resulting in reduced power dissipation and heat generation. It also supports higher current ratings (280 mA) and extends the maximum operating temperature to 150°C. However, the inductance test frequency differs at 100 kHz versus 1 kHz.

Q: Are both substitutes compatible with the original PCB footprint?

A: All three parts use nonstandard surface mount packages. Physical dimensions vary slightly: SCRH64B-471 measures 6.50mm × 6.40mm × 5.20mm height; CDRH64BNP-471MC-B measures 6.20mm × 5.90mm × 5.00mm height; CLF6045NIT-471M-D measures 6.30mm × 6.00mm × 4.80mm height. PCB layout verification is required.

Q: Do both substitutes meet the same compliance standards?

A: Both substitutes are ROHS3 compliant with MSL 1 (Unlimited) ratings, matching the original part. CLF6045NIT-471M-D additionally carries AEC-Q200 automotive qualification, which the original part does not specify.

Q: Which substitute should be selected for new designs?

A: For new designs, CLF6045NIT-471M-D is preferred due to active product status, lower DC resistance, extended temperature range, and automotive qualification. CDRH64BNP-471MC-B is suitable only if circuit current requirements are confirmed below 200 mA and maximum operating temperature does not exceed 100°C.