ASPI-2010-4R7M-T Equivalent & Substitute Parts

Part Overview

The ASPI-2010-4R7M-T is a 4.7 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 820 mA continuous current with a maximum DC resistance of 479 mOhm. This surface mount component operates across the temperature range of -40°C to 125°C and is ROHS3 compliant. The part is currently in active production status. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory availability, or design flexibility while maintaining electrical and mechanical compatibility.

Substiute Parts

ASPI-2010-4R7M-T

Abracon LLCIn Stock: 1139ASPI-2010-4R7M-T Datasheet

Current PartRFQ

VLS201612ET-4R7M

TDK CorporationIn Stock: 15727VLS201612ET-4R7M Datasheet

MFR RecommendedRFQ

VLS201612ET-4R7M-CA

TDK CorporationIn Stock: 3166VLS201612ET-4R7M-CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ASPI-2010-4R7M-T are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 4.7 µH (±20% tolerance)
• Core material: Ferrite, shielded drum core wirewound construction
• Mounting type: Surface mount
• Package footprint: 2.00mm x 1.60mm (0.079" L x 0.063" W)
• RoHS compliance: ROHS3 Compliant

Secondary Compatibility Parameters:

• Current rating: Minimum 700 mA (substitute parts must support the application's current requirements)
• DC resistance: Maximum 438-479 mOhm (electrical performance within acceptable range)
• Operating temperature range: Minimum -40°C to 105°C (covers standard industrial applications)

The identified substitutes maintain identical inductance, core material, shielding, and footprint dimensions. Variations in current rating, saturation current, and maximum seated height are within acceptable tolerances for equivalent functionality.

Parameter Comparison

Engineering Selection Recommendations

ASPI-2010-4R7M-T (Primary Selection)

The ASPI-2010-4R7M-T remains the recommended choice for new designs. This part is in active production status, ensuring long-term availability and supply chain stability. It provides the highest current rating (820 mA) and saturation current (850 mA) among the available options, offering superior performance margin for applications approaching maximum current specifications. The extended operating temperature range (-40°C to 125°C) supports demanding thermal environments. ROHS3 compliance and active product status ensure regulatory alignment and manufacturing continuity.

VLS201612ET-4R7M (Secondary Selection)

The VLS201612ET-4R7M from TDK Corporation is electrically equivalent with identical inductance, tolerance, core material, and footprint. This part is marked as "Not For New Designs," indicating it is in mature or end-of-life status. The current rating of 700 mA is suitable for applications not requiring the full 820 mA capability of the primary part. DC resistance is lower (438 mOhm vs. 479 mOhm), providing improved efficiency. The seated height is 0.047" (1.20mm) compared to 0.039" (1.00mm) for the primary part; PCB layout clearance must be verified. Operating temperature range is -40°C to 105°C, which is adequate for standard industrial applications but does not extend to the 125°C upper limit of the primary part.

VLS201612ET-4R7M-CA (Tertiary Selection)

The VLS201612ET-4R7M-CA is functionally equivalent to VLS201612ET-4R7M with a slightly higher current rating of 750 mA. This variant is also marked "Not For New Designs." All other electrical and mechanical parameters are identical to VLS201612ET-4R7M. Selection between these two TDK variants depends on application current requirements: VLS201612ET-4R7M-CA is preferred for designs requiring 750 mA or higher current capability within the 700 mA saturation limit.

Frequently Asked Questions (FAQ)

Q: Can VLS201612ET-4R7M or VLS201612ET-4R7M-CA be used as direct replacements for ASPI-2010-4R7M-T?

A: Both TDK parts are electrically compatible substitutes with identical inductance (4.7 µH), tolerance (±20%), core material (ferrite), shielding, and footprint (2.00mm x 1.60mm). However, the seated height differs: TDK parts are 0.047" (1.20mm) versus 0.039" (1.00mm) for the Abracon part. PCB layout and component clearance must be verified before substitution. Additionally, both TDK parts are marked "Not For New Designs," so they are suitable only for legacy system maintenance or where supply constraints require alternative sourcing.

Q: What is the impact of the current rating difference between ASPI-2010-4R7M-T (820 mA) and the TDK substitutes (700-750 mA)?

A: The ASPI-2010-4R7M-T provides higher current capacity and saturation margin. If your application operates at or near 800 mA, the TDK substitutes (700-750 mA rated) may not provide adequate safety margin and could experience saturation or thermal stress. For applications operating below 700 mA, the TDK parts are suitable. Verify actual circuit current requirements before selecting a substitute.

Q: Are there temperature range limitations when substituting with TDK parts?

A: Yes. The ASPI-2010-4R7M-T operates from -40°C to 125°C, while both TDK substitutes operate from -40°C to 105°C. If your application requires operation above 105°C, the TDK parts are not suitable. For standard industrial temperature ranges (-40°C to 85°C or -40°C to 105°C), the TDK parts are acceptable.

Q: What is the significance of the DC resistance difference (479 mOhm vs. 438 mOhm)?

A: The TDK substitutes have lower DC resistance (438 mOhm max) compared to the Abracon part (479 mOhm max). Lower resistance reduces I²R losses and heat generation, improving efficiency. This is a favorable characteristic for substitution. However, circuit designs that depend on specific impedance characteristics should be reviewed to ensure the lower resistance does not affect circuit performance.

Q: Why are the TDK parts marked "Not For New Designs"?

A: This designation indicates the parts are in mature or end-of-life status. Manufacturers apply this status when transitioning products out of active production. These parts remain available for existing customer support and legacy system maintenance but are not recommended for new product development. For new designs, the ASPI-2010-4R7M-T (active status) is the appropriate selection.

Q: Can I use these parts interchangeably in production?

A: Interchangeability depends on your specific application requirements. All three parts share identical inductance, tolerance, core material, and footprint. However, differences in current rating, saturation current, operating temperature range, and seated height must be evaluated against your circuit specifications. A design review is recommended before implementing any substitution in production.