AISC-1210H-391K-T Equivalent & Substitute Parts

Part Overview

The AISC-1210H-391K-T is a 390 µH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 60 mA maximum current with a DC resistance of 20.4 Ohm maximum. This component is packaged in the 1210 (3225 Metric) surface mount form factor and operates across the temperature range of -25°C to 85°C.

The AISC-1210H-391K-T is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

AISC-1210H-391K-T

Abracon LLCIn Stock: 786AISC-1210H-391K-T Datasheet

Current PartRFQ

PM1210-390J-RC

Bourns Inc.In Stock: 738PM1210-390J-RC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AISC-1210H-391K-T is determined by the following critical parameters:

Package Compatibility: The substitute part must use the 1210 (3225 Metric) surface mount package to ensure mechanical fit and assembly compatibility.

Core Type and Material: The substitute must employ a drum core wirewound construction with ferrite material to maintain electromagnetic performance characteristics.

Shielding Configuration: The substitute must be unshielded to match the original design intent and electromagnetic profile.

Regulatory Compliance: The substitute must maintain ROHS3 compliance and MSL 1 rating to satisfy manufacturing and environmental requirements.

Electrical Performance Window: While the AISC-1210H-391K-T specifies 390 µH inductance at 60 mA current rating, substitute parts may operate within different inductance values and current ratings provided they serve equivalent functional roles in the circuit topology. The DC resistance and current handling characteristics must be evaluated against the specific application requirements.

The PM1210-390J-RC from Bourns Inc. is listed as the manufacturer-recommended substitute. This part shares the same package form factor, core type, material composition, and regulatory compliance status as the original component.

Parameter Comparison

Engineering Selection Recommendations

The PM1210-390J-RC from Bourns Inc. is designated as the manufacturer-recommended substitute for the obsolete AISC-1210H-391K-T. Both components share identical package form factors, core construction types, ferrite material composition, and regulatory compliance certifications (ROHS3 and MSL 1).

The PM1210-390J-RC maintains active product status, ensuring ongoing availability and supply chain continuity. The substitute part operates across an extended temperature range (-40°C to 125°C) compared to the original component (-25°C to 85°C), providing broader environmental operating capability.

Both components are surface mount inductors suitable for automated assembly processes and are packaged in tape and reel format for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can the PM1210-390J-RC be used as a direct replacement for the AISC-1210H-391K-T?

A: The PM1210-390J-RC shares the same 1210 (3225 Metric) package form factor, drum core wirewound construction, ferrite material, and unshielded configuration. Both components are ROHS3 compliant with MSL 1 ratings. Physical dimensions are similar with minor variations in length and height. Electrical performance differs in inductance value (39 µH versus 390 µH), current rating (80 mA versus 60 mA), and DC resistance (6.4 Ohm versus 20.4 Ohm). Circuit-level compatibility must be evaluated based on specific application requirements.

Q: What are the key differences between these two inductors?

A: The primary differences are inductance value (390 µH versus 39 µH), inductance tolerance (±10% versus ±5%), current rating (60 mA versus 80 mA), DC resistance (20.4 Ohm Max versus 6.4 Ohm Max), and operating temperature range (-25°C to 85°C versus -40°C to 125°C). The PM1210-390J-RC exhibits lower DC resistance and higher current capacity, while the AISC-1210H-391K-T provides higher inductance value.

Q: Are both components suitable for automated assembly?

A: Yes. Both the AISC-1210H-391K-T and PM1210-390J-RC are surface mount components packaged in tape and reel format, compatible with standard pick-and-place assembly equipment and reflow soldering processes.

Q: What is the significance of the inductance tolerance difference?

A: The AISC-1210H-391K-T specifies ±10% inductance tolerance, while the PM1210-390J-RC specifies ±5% tolerance. The tighter tolerance of the substitute part provides greater inductance value consistency across production batches.

Q: How do the DC resistance values affect circuit performance?

A: DC resistance directly impacts power dissipation and voltage drop across the inductor. The AISC-1210H-391K-T exhibits 20.4 Ohm maximum DC resistance, while the PM1210-390J-RC exhibits 6.4 Ohm maximum DC resistance. Lower DC resistance reduces resistive losses and heat generation in the inductor.

Q: Are there physical fit considerations for PCB layout?

A: Both components use the 1210 (3225 Metric) package. The PM1210-390J-RC is slightly shorter in length (0.126" versus 0.138") and height (0.087" versus 0.098"). These minor dimensional differences are within standard PCB design tolerances for 1210 package footprints.