744765147A Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 744765147A is a 47 nH unshielded drum core wirewound inductor rated for 100 mA maximum current with 830mOhm DC resistance in a 0402 (1005 Metric) surface mount package. This component is designed for high-frequency applications requiring low inductance values with controlled impedance characteristics. The part is active in production and carries AEC-Q200 automotive qualification, making it suitable for demanding industrial and automotive environments. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Key Parameters

Parameter	Value
Inductance	47 nH
Inductance Tolerance	±5%
Current Rating	100 mA
DC Resistance (DCR)	830mOhm Max
Package / Case	0402 (1005 Metric)
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 744765147A is determined by the following critical parameters:

Inductance Value: Must be 47 nH ±5% to maintain circuit performance
Package / Case: Must be 0402 (1005 Metric) for mechanical and electrical compatibility
Mounting Type: Must be Surface Mount for PCB assembly compatibility
Shielding Configuration: Must be Unshielded to match electromagnetic characteristics
Core Type: Must be Drum Core, Wirewound construction
RoHS Compliance: Must meet ROHS3 requirements for regulatory alignment

The Murata Electronics LQW15AN47NJ00D meets all substitution criteria. While the substitute part exhibits higher current rating (210 mA vs. 100 mA) and lower DC resistance (1.08Ohm vs. 830mOhm), these represent performance improvements that do not compromise circuit functionality. The identical inductance value, package footprint, and unshielded drum core construction ensure direct mechanical and electrical compatibility.

Parameter Comparison

Parameter	744765147A (Würth Elektronik)	LQW15AN47NJ00D (Murata Electronics)
Inductance	47 nH	47 nH
Inductance Tolerance	±5%	±5%
Current Rating (Amps)	100 mA	210 mA
DC Resistance (DCR)	830mOhm Max	1.08Ohm Max
Q @ Frequency	26 @ 200MHz	25 @ 200MHz
Frequency - Self Resonant	2.1GHz	2.9GHz
Operating Temperature Range	-40°C ~ 125°C	-55°C ~ 125°C
Package / Case	0402 (1005 Metric)	0402 (1005 Metric)
Size / Dimension	0.039" L x 0.022" W (1.00mm x 0.55mm)	0.039" L x 0.020" W (1.00mm x 0.50mm)
Height - Seated (Max)	0.024" (0.60mm)	0.024" (0.60mm)
Shielding	Unshielded	Unshielded
Type	Drum Core, Wirewound	Drum Core, Wirewound
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the 744765147A and LQW15AN47NJ00D are active production components with ROHS3 compliance and unlimited moisture sensitivity rating. The 744765147A carries AEC-Q200 automotive qualification, establishing its suitability for regulated automotive applications. The LQW15AN47NJ00D does not list AEC-Q200 certification in the provided specifications.

For applications requiring AEC-Q200 compliance, the 744765147A remains the specified component. For general industrial applications where AEC-Q200 is not mandated, the LQW15AN47NJ00D provides equivalent inductance performance with enhanced current handling capability and extended low-temperature operating range (-55°C vs. -40°C minimum).

Component selection should be based on specific application requirements regarding automotive qualification status and thermal operating envelope.

Frequently Asked Questions (FAQ)

Q: Can the LQW15AN47NJ00D be used as a direct replacement for the 744765147A?

A: The LQW15AN47NJ00D is mechanically and electrically compatible for applications not requiring AEC-Q200 automotive qualification. Both components share identical inductance values, package footprints, and unshielded drum core construction. Applications requiring AEC-Q200 certification must use the 744765147A.

Q: What is the significance of the different DC resistance values?

A: The 744765147A specifies 830mOhm maximum DC resistance, while the LQW15AN47NJ00D specifies 1.08Ohm maximum. Lower DC resistance reduces resistive losses in the inductor. Circuit designs must account for the actual DCR value of the selected component when calculating power dissipation and impedance characteristics.

Q: Are the physical dimensions identical?

A: Both components use the 0402 (1005 Metric) package with 0.024" (0.60mm) maximum seated height. The 744765147A width is 0.022" (0.55mm) while the LQW15AN47NJ00D width is 0.020" (0.50mm). Both dimensions fall within standard 0402 package tolerances and are compatible with standard PCB footprints.

Q: What is the difference in current rating significance?

A: The 744765147A is rated for 100 mA maximum current, while the LQW15AN47NJ00D is rated for 210 mA. If circuit current requirements exceed 100 mA, the 744765147A cannot be used. The LQW15AN47NJ00D accommodates higher current applications while maintaining the same inductance value.

Q: Do both components meet moisture sensitivity requirements?

A: Both components carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture absorption limitations during storage or handling. Standard PCB assembly processes are suitable for both parts without special moisture control measures.

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