ELL-8TP100MB Equivalent & Substitute Parts

Part Overview

The ELL-8TP100MB is a 10 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 3 A continuous current with 25mOhm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity. The part features surface mount technology with nonstandard corner terminals and operates across the industrial temperature range of -40°C to 105°C.

Substiute Parts

ELL-8TP100MB

Panasonic Electronic ComponentsIn Stock: 846ELL-8TP100MB Datasheet

Current PartRFQ

7443341000

Würth ElektronikIn Stock: 21897443341000 Datasheet

SimilarRFQ

SRU8043-100Y

Bourns Inc.In Stock: 15542SRU8043-100Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ELL-8TP100MB is determined by strict alignment of the following electrical and mechanical parameters:

• Inductance Value: Must be 10 µH at 100 kHz test frequency
• Shielding: Must be shielded construction
• Mounting Type: Must be surface mount
• Current Capability: Minimum 3 A continuous rating
• DC Resistance: Must not exceed 41mOhm to maintain circuit performance
• Operating Temperature: Must support -40°C minimum and 105°C maximum
• RoHS Compliance: Must meet ROHS3 requirements
• Moisture Sensitivity: Must be MSL 1 or equivalent

Two active substitute parts meet these criteria: Würth Elektronik 7443341000 and Bourns Inc. SRU8043-100Y. Both are shielded wirewound inductors with 10 µH inductance, surface mount packaging, and extended temperature ranges supporting the original part's operating envelope.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products with full ROHS3 compliance and MSL 1 moisture sensitivity ratings, ensuring long-term availability and regulatory alignment.

Würth Elektronik 7443341000 provides the highest current margin with 4.4 A continuous rating and 7 A saturation current. The extended temperature range to 125°C exceeds the original part specification. DC resistance of 41mOhm maximum is within acceptable limits for most applications. Height of 7.50mm requires PCB layout verification against the original 5.00mm profile.

Bourns Inc. SRU8043-100Y maintains identical footprint dimensions (8.00mm x 8.00mm) and the lowest profile height at 4.60mm, minimizing PCB layout modifications. Current rating of 4.6 A directly exceeds the original 3 A requirement. DC resistance of 30mOhm provides improved performance over the original 25mOhm specification. Extended temperature range to 125°C supports broader operating environments. Inductance tolerance of ±30% is wider than the original ±20%, requiring circuit tolerance analysis.

Frequently Asked Questions (FAQ)

Q: Can the ELL-8TP100MB be directly replaced with either substitute part?

A: Both substitute parts meet the core electrical requirements: 10 µH inductance at 100 kHz, shielded construction, surface mount technology, and minimum 3 A current rating. Physical dimensions differ slightly; the Bourns part maintains identical footprint dimensions, while the Würth part is marginally larger in length and significantly taller. PCB layout verification is required for the Würth part.

Q: What is the impact of higher DC resistance in the Würth part?

A: The Würth 7443341000 specifies 41mOhm maximum DCR compared to the original 25mOhm. This 16mOhm increase results in proportionally higher resistive losses. At 3 A continuous current, this represents approximately 0.36 W additional power dissipation. Circuit thermal analysis is necessary to confirm acceptability in the target application.

Q: Does the wider inductance tolerance of the Bourns part affect circuit performance?

A: The SRU8043-100Y specifies ±30% tolerance versus the original ±20%. This wider tolerance band may impact frequency-dependent circuits or precision filtering applications. Circuit simulation with tolerance extremes (7 µH to 13 µH) is recommended to confirm performance margins.

Q: Are there packaging differences between these parts?

A: The ELL-8TP100MB and SRU8043-100Y are supplied in different packaging formats (original in standard SMD packaging, Bourns in Cut Tape and Digi-Reel). The Würth part is supplied in Tape & Reel format. These packaging differences do not affect electrical performance but may influence procurement and assembly processes.

Q: What is the saturation current significance for these inductors?

A: Saturation current (Isat) defines the point at which inductor core material saturates, causing inductance to degrade. The original part saturates at 3 A, matching its continuous rating. The Würth part saturates at 7 A, providing significant margin. The Bourns part saturates at 2.7 A, below the continuous rating, requiring current limiting to prevent saturation-induced performance loss.