ELL-ATP101MB Equivalent & Substitute Parts

Part Overview

The ELL-ATP101MB is a 100 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.2 A continuous current with 180mOhm DC resistance. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. Substitute parts must maintain the core electrical specifications while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value
Inductance	100 µH
Current Rating	1.2 A
DC Resistance (DCR)	180mOhm
Shielding	Shielded
Mounting Type	Surface Mount
Package Size	10.00mm x 10.00mm
Inductance Tolerance	±20%
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ELL-ATP101MB are selected based on the following critical parameters:

Inductance Value: 100 µH (exact match required)
Current Rating: Minimum 1.2 A (equal or higher acceptable)
Shielding: Shielded construction (electromagnetic containment requirement)
Mounting Type: Surface Mount (PCB assembly compatibility)
Package Footprint: 10.00mm x 10.00mm (physical board space constraint)
Compliance: ROHS3 Compliant (regulatory requirement)

The following active parts meet these substitution criteria:

7447714101 (Würth Elektronik WE-PD Performance series)
SRU1038-101Y (Bourns Inc. SRU1038 series)

Parameter Comparison

Parameter	ELL-ATP101MB (Main)	7447714101 (Würth)	SRU1038-101Y (Bourns)
Manufacturer	Panasonic Electronic Components	Würth Elektronik	Bourns Inc.
Inductance	100 µH	100 µH	100 µH
Inductance Tolerance	±20%	±20%	±30%
Current Rating (Amps)	1.2 A	1.5 A	1.3 A
Current - Saturation (Isat)	1 A	1.8 A	1.1 A
DC Resistance (DCR)	180mOhm	198mOhm Max	220mOhm
Shielding	Shielded	Shielded	Shielded
Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package Size	10.00mm x 10.00mm	10.00mm x 10.00mm	10.00mm x 10.00mm
Height - Seated (Max)	4.50mm	5.00mm	4.10mm
Operating Temperature	Not specified	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

7447714101 (Würth Elektronik WE-PD Performance)

This substitute provides superior electrical performance with 1.5 A current rating and 1.8 A saturation current, exceeding the ELL-ATP101MB requirements. The part carries AEC-Q200 automotive qualification and active product status with 2600 units in stock. DC resistance of 198mOhm is marginally higher than the original specification. Height of 5.00mm requires verification against PCB clearance constraints.

SRU1038-101Y (Bourns Inc.)

This substitute meets the minimum current requirement at 1.3 A with active product status and substantial inventory availability (22200 units). The part features the lowest seated height at 4.10mm, optimizing PCB space utilization. DC resistance of 220mOhm represents the highest among available substitutes. Inductance tolerance of ±30% is wider than the original ±20% specification.

Both substitutes maintain ROHS3 compliance, MSL Level 1 rating, and identical footprint dimensions. Selection between these options depends on DC resistance tolerance requirements and available PCB height clearance.

Frequently Asked Questions (FAQ)

Q: Can the 7447714101 or SRU1038-101Y be used as direct replacements for the ELL-ATP101MB?

A: Both parts are electrically compatible substitutes. The ELL-ATP101MB footprint (10.00mm x 10.00mm) matches both alternatives. Verify PCB clearance for component height: 7447714101 requires 5.00mm clearance, while SRU1038-101Y requires 4.10mm.

Q: What is the impact of higher DC resistance in the substitute parts?

A: The 7447714101 exhibits 198mOhm DCR (10% higher) and SRU1038-101Y exhibits 220mOhm DCR (22% higher) compared to the original 180mOhm specification. This increases resistive losses and heat generation proportionally. Thermal performance must be evaluated for the specific application circuit.

Q: Are there differences in inductance tolerance between substitutes?

A: The ELL-ATP101MB and 7447714101 both specify ±20% tolerance. The SRU1038-101Y specifies ±30% tolerance, representing a wider acceptable range. Applications requiring tighter inductance control should prioritize the 7447714101.

Q: What compliance certifications apply to these substitutes?

A: All three parts are ROHS3 compliant. The 7447714101 carries AEC-Q200 automotive qualification. The SRU1038-101Y does not list automotive qualification. Select based on end-application requirements.

Q: How do current ratings compare across these parts?

A: The ELL-ATP101MB is rated for 1.2 A continuous current. The 7447714101 provides 1.5 A (25% margin) and SRU1038-101Y provides 1.3 A (8% margin). Both exceed the original specification, providing design flexibility for circuit upgrades.

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