744042330 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744042330 is a 33 µH shielded drum core wirewound inductor rated for 730 mA continuous current with a maximum DC resistance of 420 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is designed for applications requiring stable inductance performance at 100 kHz test frequency. The part is currently active in production and ROHS3 compliant, making it suitable for modern electronic assemblies where equivalent inductors from alternative manufacturers may be required due to supply chain considerations or inventory availability.

Substiute Parts

744042330

Würth ElektronikIn Stock: 1305744042330 Datasheet

Current PartRFQ

SRR4018-330Y

Bourns Inc.In Stock: 1643SRR4018-330Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SRR4018-330Y qualifies as a direct substitute for the Würth Elektronik 744042330 based on the following critical parameters:

• Identical inductance value: 33 µH
• Matching current rating: 730 mA
• Equivalent DC resistance: 420 mOhm maximum
• Same core material and shielding: Ferrite, shielded drum core
• Identical tolerance: ±30%
• Matching package designation: 1919 (4848 Metric)
• Identical physical dimensions: 0.189" L × 0.189" W (4.80 mm × 4.80 mm), 0.079" height maximum
• Equivalent operating temperature range: -40°C to 125°C
• Same self resonant frequency: 21 MHz
• Identical inductance test frequency: 100 kHz

Both components are surface mount wirewound inductors with ferrite shielded drum cores, making them functionally interchangeable in circuit applications where these electrical and mechanical specifications are required.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 744042330 and Bourns Inc. SRR4018-330Y are active production components with identical ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Selection between these parts may be based on supply chain availability, lead time, or inventory position. The Bourns SRR4018-330Y currently has 1539 pieces in stock compared to 1215 pieces for the Würth part. Both components meet identical electrical specifications and physical package requirements, ensuring direct substitution capability in surface mount applications requiring 33 µH inductance at 730 mA continuous current rating.

Frequently Asked Questions (FAQ)

Q: Can the SRR4018-330Y replace the 744042330 in my circuit? A: Yes. Both inductors share identical electrical specifications (33 µH, 730 mA rating, 420 mOhm DCR), core material (ferrite shielded drum core), tolerance (±30%), and physical package (1919/4848 Metric). They are direct substitutes.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.189" L × 0.189" W (4.80 mm × 4.80 mm) with a maximum seated height of 0.079" (2.00 mm), ensuring identical PCB footprint compatibility.

Q: Do both parts have the same temperature operating range? A: Yes. Both the 744042330 and SRR4018-330Y operate across -40°C to 125°C.

Q: What is the saturation current for these inductors? A: Both parts have a saturation current (Isat) of 500 mA.

Q: Are both parts RoHS compliant? A: Yes. Both the Würth Elektronik 744042330 and Bourns Inc. SRR4018-330Y are ROHS3 compliant.

Q: What is the self resonant frequency? A: Both inductors have a self resonant frequency of 21 MHz.

Q: Can these parts be used interchangeably in production? A: Yes. Identical electrical ratings, package specifications, and compliance certifications allow direct substitution without circuit redesign.