Würth Elektronik 744871100 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744871100 is a shielded 2-coil inductor array designed for surface mount applications. This component features dual inductance configurations: 40 µH when coils are connected in series and 10 µH when connected in parallel. The part is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductor array category.

Substiute Parts

744871100

Würth ElektronikIn Stock: 1450744871100 Datasheet

Current PartRFQ

SRF1260-100M

Bourns Inc.In Stock: 9468SRF1260-100M Datasheet

DirectRFQ

PF0552.822NL

Pulse ElectronicsIn Stock: 1050PF0552.822NL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Würth Elektronik 744871100 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Number of coils: 2
• Inductance value in parallel configuration: 10 µH (±20% tolerance)
• Inductance value in series configuration: 40 µH (±20% tolerance)
• Shielding type: Shielded
• Mounting type: Surface Mount
• Physical footprint: 12.50 mm x 12.50 mm
• Operating temperature range: -40°C to 125°C
• RoHS3 compliance

Secondary Compatibility Parameters:

• Current rating capability in parallel and series configurations
• DC resistance characteristics
• Height profile
• Moisture sensitivity level

Two substitute parts meet the primary electrical and mechanical criteria: the Bourns Inc. SRF1260-100M and the Pulse Electronics PF0552.822NL. Both maintain the core inductance specifications and physical compatibility required for direct substitution in applications designed for the 744871100.

Parameter Comparison

Engineering Selection Recommendations

Bourns Inc. SRF1260-100M

The SRF1260-100M provides exact electrical equivalence to the 744871100 with identical inductance values in both parallel (10 µH) and series (40 µH) configurations. This part offers superior current handling capability (5.35 A parallel, 2.67 A series) and lower DC resistance in parallel configuration (24.6 mOhm vs. 50 mOhm). The height profile is 0.3 mm lower (6.20 mm vs. 6.50 mm), which may be advantageous in space-constrained applications. All compliance certifications match: RoHS3, MSL 1, and Active product status.

Pulse Electronics PF0552.822NL

The PF0552.822NL exhibits inductance values within the ±20% tolerance band of the 744871100 (8.1 µH parallel vs. 10 µH, 32 µH series vs. 40 µH). This part delivers the highest current ratings (6.5 A parallel, 3.3 A series) and the lowest DC resistance in parallel configuration (18 mOhm). The height is 6.00 mm, providing the most compact profile. Compliance certifications are equivalent: RoHS3, MSL 1, and Active product status. The inductance variance requires circuit-level evaluation to confirm functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRF1260-100M be used as a direct replacement for the Würth Elektronik 744871100?

A: Yes. The SRF1260-100M maintains identical inductance specifications (10 µH parallel, 40 µH series), matching footprint (12.50 mm x 12.50 mm), and equivalent operating temperature range. The lower height (6.20 mm vs. 6.50 mm) and improved current ratings present no compatibility issues for applications designed for the 744871100.

Q: Is the Pulse Electronics PF0552.822NL a suitable substitute?

A: The PF0552.822NL meets the ±20% tolerance specification for inductance values (8.1 µH parallel, 32 µH series) and maintains identical physical footprint and operating temperature range. Circuit-level analysis is required to confirm that the inductance variance falls within acceptable design margins for the specific application.

Q: What are the key differences in current handling between these parts?

A: The 744871100 is rated for 2 A parallel and 1 A series. The SRF1260-100M provides 5.35 A parallel and 2.67 A series. The PF0552.822NL offers 6.5 A parallel and 3.3 A series. All three parts are suitable for applications within their respective current ratings.

Q: Do all three parts have the same moisture sensitivity level?

A: Yes. The 744871100, SRF1260-100M, and PF0552.822NL are all rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there packaging differences between these parts?

A: The 744871100 and SRF1260-100M are supplied in Tape & Reel (TR) packaging. The PF0552.822NL is supplied in Tray packaging. Packaging format may affect procurement and assembly processes but does not impact electrical or mechanical compatibility.

Q: What is the significance of the height differences?

A: The 744871100 has a height of 6.50 mm, the SRF1260-100M is 6.20 mm, and the PF0552.822NL is 6.00 mm. These variations are within typical PCB assembly tolerances and do not prevent substitution in standard surface mount applications. Height differences may be relevant only in applications with strict vertical clearance constraints.