74476601 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74476601 is a 1 µH unshielded drum core wirewound inductor rated for 450 mA with a maximum DC resistance of 500 mOhm, packaged in the 1812 (4532 Metric) surface mount form factor. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when electrical specifications, mechanical dimensions, and environmental ratings align within the defined tolerance parameters for this inductor category.

Substiute Parts

74476601

Würth ElektronikIn Stock: 220374476601 Datasheet

Current PartRFQ

CM453232-1R0KL

Bourns Inc.In Stock: 10246CM453232-1R0KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74476601 is determined by strict alignment of the following parameters:

• Inductance value: 1 µH with ±10% tolerance
• Current rating: minimum 450 mA
• DC resistance: maximum 500 mOhm
• Package / Case: 1812 (4532 Metric) surface mount
• Core construction: Drum core, wirewound, ferrite, unshielded
• Environmental compliance: RoHS3 compliant, MSL 1

The Bourns Inc. CM453232-1R0KL meets all substitution criteria within these electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 74476601 and CM453232-1R0KL are Active status components with identical electrical specifications and mechanical compatibility. Selection between these parts may be based on:

• Availability and lead time requirements
• Supply chain preferences
• Operating temperature margin: The CM453232-1R0KL supports -40°C ~ 125°C versus the 74476601 at -40°C ~ 105°C, providing an additional 20°C upper temperature margin
• Physical height clearance: The CM453232-1R0KL seated height is 0.134" (3.40mm) compared to 0.142" (3.60mm) for the 74476601, offering 0.008" (0.20mm) additional clearance

Both parts maintain RoHS3 compliance, MSL 1 rating, and identical electrical performance at the specified test frequency of 7.96 MHz.

Frequently Asked Questions (FAQ)

Q: Can the CM453232-1R0KL be used as a direct replacement for the 74476601?

A: Yes. Both parts share identical inductance (1 µH ±10%), current rating (450 mA), DC resistance (500 mOhm max), package (1812 / 4532 Metric), and core construction (ferrite drum core, unshielded). Electrical performance at 7.96 MHz test frequency is equivalent.

Q: What are the key differences between these parts?

A: The CM453232-1R0KL operates to 125°C versus 105°C for the 74476601, and has a slightly lower seated height of 0.134" (3.40mm) compared to 0.142" (3.60mm). Self-resonant frequency differs: 100 MHz for the CM453232-1R0KL versus 275 MHz for the 74476601.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 74476601 and CM453232-1R0KL are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the package compatibility?

A: Both inductors use the 1812 (4532 Metric) surface mount package with identical footprint dimensions of 0.177" L x 0.126" W (4.50mm x 3.20mm). PCB layout compatibility is maintained.

Q: Which part should be selected for high-temperature applications?

A: The CM453232-1R0KL supports operation to 125°C, providing a 20°C margin above the 74476601 maximum of 105°C for elevated temperature environments.