Würth Elektronik 782853910 Ferrite Bead Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 782853910 is a signal line ferrite bead designed for electromagnetic interference (EMI) suppression in 0805 (2012 Metric) surface mount applications. This component provides 91 Ohms of impedance at 100 MHz with a maximum current rating of 2A and operates across the industrial temperature range of -55°C to 125°C. The part is AEC-Q200 rated and RoHS3 compliant, making it suitable for automotive and high-reliability applications. Equivalent substitute parts may be required due to inventory constraints, regional availability, or specific design optimization needs while maintaining functional compatibility.

Substiute Parts

782853910

Würth ElektronikIn Stock: 1342782853910 Datasheet

Current PartRFQ

MPZ2012S101ATD25

TDK CorporationIn Stock: 1347MPZ2012S101ATD25 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Würth Elektronik 782853910 is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 0805 (2012 Metric) surface mount package to ensure PCB footprint compatibility and automated assembly compatibility.

Electrical Performance: The impedance value at 100 MHz is the primary electrical specification. The substitute part (MPZ2012S101ATD25) provides 100 Ohms at 100 MHz, which represents a 9.9% variance from the specified 91 Ohms. This variance falls within acceptable tolerance for signal line ferrite bead applications where impedance matching is not critical.

Current Handling: The substitute part supports 4A maximum current, which exceeds the 2A requirement of the main part, ensuring adequate thermal and electrical margin.

Environmental and Compliance Requirements: Both parts maintain identical operating temperature ranges (-55°C to 125°C), AEC-Q200 automotive qualification, RoHS3 compliance, and unlimited moisture sensitivity level (MSL 1), ensuring functional equivalence in regulated applications.

DC Resistance: The substitute part exhibits lower DC resistance (20mOhm versus 60mOhm), which provides improved signal integrity and reduced power dissipation.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 782853910 and TDK MPZ2012S101ATD25 are active production components with AEC-Q200 automotive qualification and RoHS3 compliance, confirming their suitability for regulated and high-reliability applications.

The TDK MPZ2012S101ATD25 substitute part is electrically and mechanically compatible with the main part based on identical package geometry (0805 2012 Metric), matching operating temperature range, and equivalent compliance certifications. The 9.9% impedance variance (100 Ohms versus 91 Ohms) is within normal component tolerance for ferrite bead applications. The substitute part's superior current rating (4A versus 2A) and lower DC resistance (20mOhm versus 60mOhm) provide additional design margin and improved performance characteristics.

Selection between these parts should be based on availability, cost, and specific circuit requirements rather than functional limitations.

Frequently Asked Questions (FAQ)

Q: Can the TDK MPZ2012S101ATD25 be used as a direct replacement for the Würth Elektronik 782853910?

A: Yes. Both parts share identical 0805 (2012 Metric) package dimensions, surface mount compatibility, operating temperature range, and AEC-Q200 certification. The 9.9% impedance difference (100 Ohms versus 91 Ohms) is within acceptable tolerance for signal line ferrite bead applications.

Q: What is the significance of the filter type difference (Signal Line versus Power Line)?

A: Filter type designation indicates the intended application context. The substitute part's power line classification reflects its higher current rating (4A) and lower DC resistance (20mOhm), making it suitable for both signal and power line applications. The main part's signal line classification is appropriate for lower current signal conditioning.

Q: Are there any height or dimensional concerns when substituting these parts?

A: No. The substitute part (0.041" maximum height) is slightly lower than the main part (0.043" maximum height), ensuring compatibility with existing PCB layouts and assembly processes. Lateral dimensions remain identical at 0.079" L x 0.047-0.049" W.

Q: Do both parts meet the same compliance and certification requirements?

A: Yes. Both parts are RoHS3 compliant, AEC-Q200 rated, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity level, confirming equivalence for regulated applications.

Q: What is the impact of the lower DC resistance in the substitute part?

A: Lower DC resistance (20mOhm versus 60mOhm) reduces resistive losses and heat generation during operation, improving signal integrity and component reliability. This represents a performance advantage in the substitute part.