SCRH64B-180 Equivalent & Substitute Parts

Part Overview

The SCRH64B-180 is a 18 µH shielded surface mount inductor manufactured by Signal Transformer, rated for 1.02 A maximum current with 240mOhm DC resistance. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across the industrial temperature range of -40°C to 125°C and meets ROHS3 compliance requirements.

Substiute Parts

SCRH64B-180

Signal TransformerIn Stock: 695SCRH64B-180 Datasheet

Current PartRFQ

PA4340.183NLT

Pulse ElectronicsIn Stock: 12797PA4340.183NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SCRH64B-180 is based on the following critical electrical and mechanical parameters:

Inductance Value: Both the main part and substitute must maintain 18 µH inductance at the specified test frequency with ±20% tolerance.

Current Handling: The substitute part must support the application's current requirements. The SCRH64B-180 is rated for 1.02 A; substitute parts with equal or higher current ratings are acceptable.

DC Resistance: The substitute's DCR must not exceed the maximum allowable value for the application circuit. The SCRH64B-180 specifies 240 mOhm maximum; substitutes with equal or lower DCR are compatible.

Shielding: Both parts are shielded inductors, maintaining electromagnetic isolation requirements.

Temperature Range: Both parts operate across -40°C to 125°C, ensuring thermal compatibility.

Surface Mount Configuration: Both parts use surface mount technology with nonstandard package dimensions.

Compliance: Both parts meet ROHS3 and REACH requirements with MSL 1 rating.

Parameter Comparison

Engineering Selection Recommendations

The PA4340.183NLT from Pulse Electronics is a direct substitute for the obsolete SCRH64B-180. Both parts share identical inductance values, tolerance specifications, and operating temperature ranges. The substitute part offers superior electrical performance with higher current ratings (2 A versus 1.02 A) and lower DC resistance (230 mOhm versus 240 mOhm maximum), providing design margin for the application.

The PA4340.183NLT maintains active product status with established supply availability, eliminating obsolescence risk. Both parts meet ROHS3 compliance and carry MSL 1 moisture sensitivity ratings. The substitute's molded construction and reduced physical height (3.00mm versus 5.20mm) may require PCB layout verification to confirm mechanical compatibility, though the smaller footprint generally presents no integration obstacles.

Frequently Asked Questions (FAQ)

Q: Can the PA4340.183NLT directly replace the SCRH64B-180 in existing designs?

A: Yes. Both parts maintain identical inductance values (18 µH) and tolerance specifications (±20%). The substitute's higher current rating and lower DC resistance provide electrical compatibility with margin. Physical dimensions differ slightly; verify PCB layout clearances, particularly the reduced height of 3.00mm versus 5.20mm.

Q: What are the key electrical differences between these parts?

A: The PA4340.183NLT provides higher current handling capacity (2 A saturation versus 1.02 A) and marginally lower DC resistance (230 mOhm maximum versus 240 mOhm maximum). These differences favor the substitute part for applications operating near current limits.

Q: Are there compliance or certification differences?

A: Both parts meet ROHS3 and REACH requirements with identical MSL 1 ratings. The PA4340.183NLT carries AEC-Q200 automotive qualification, providing additional reliability assurance beyond the main part's specifications.

Q: What packaging considerations apply to substitution?

A: The SCRH64B-180 packaging format is not specified in available data. The PA4340.183NLT is supplied in Tape & Reel (TR) format. Verify that your assembly process accommodates this packaging standard.

Q: How do the physical dimensions affect PCB integration?

A: The PA4340.183NLT is smaller in length (6.00mm versus 6.50mm), width (5.40mm versus 6.40mm), and significantly shorter in height (3.00mm versus 5.20mm). Confirm that reduced height does not create clearance conflicts with adjacent components or solder joint geometry requirements.