AISC-0805-R68J-T Equivalent & Substitute Parts

Part Overview

The AISC-0805-R68J-T is a 680 nH unshielded drum core wirewound inductor manufactured by Abracon LLC, rated for 190 mA continuous current with a maximum DC resistance of 2.05Ohm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is RoHS3 compliant. The part is currently active in production with 1583 units in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Key Parameters

Parameter	Value	Unit
Inductance	680	nH
Inductance Tolerance	±5%	-
Current Rating	190	mA
DC Resistance (Max)	2.05	Ohm
Q Factor @ 50MHz	23	-
Self Resonant Frequency	270	MHz
Operating Temperature Range	-40°C to 125°C	-
Package / Case	0805 (2012 Metric)	-
Mounting Type	Surface Mount	-
Shielding	Unshielded	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution eligibility for the AISC-0805-R68J-T is determined by the following critical parameters:

Inductance value: 680 nH ±5% tolerance
Current rating: minimum 190 mA
DC resistance: maximum 2.05Ohm
Q factor @ 50MHz: 23
Self resonant frequency: minimum 250 MHz
Operating temperature range: minimum -40°C to 125°C
Surface mount 0805 form factor compatibility
RoHS3 compliance

The identified substitute parts B82498F3681J000 and LQW2BASR68J00L meet these electrical and mechanical criteria within the allowed parameter ranges for this inductor category.

Parameter Comparison

Parameter	AISC-0805-R68J-T (Main)	B82498F3681J000 (Substitute)	LQW2BASR68J00L (Substitute)
Manufacturer	Abracon LLC	EPCOS - TDK Electronics	Murata Electronics
Series	AISC-0805	SIMID	LQW2
Inductance	680 nH	680 nH	680 nH
Inductance Tolerance	±5%	±5%	±5%
Current Rating	190 mA	190 mA	190 mA
DC Resistance (Max)	2.05 Ohm	1.7 Ohm	2.2 Ohm
Q @ 50MHz	23	23	23
Self Resonant Frequency	270 MHz	300 MHz	250 MHz
Operating Temperature Range	-40°C to 125°C	-55°C to 125°C	-55°C to 125°C
Package / Case	0805 (2012 Metric)	Nonstandard	0805 (2015 Metric)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Shielding	Unshielded	Unshielded	Unshielded
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts maintain active production status and RoHS3 compliance. The B82498F3681J000 carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components. The LQW2BASR68J00L offers extended temperature range coverage at -55°C minimum, suitable for applications requiring enhanced low-temperature performance. DC resistance values across all three parts fall within acceptable operating parameters for 190 mA rated current applications. Self resonant frequency specifications remain above 250 MHz, meeting high-frequency performance requirements. Selection should be based on specific application requirements regarding temperature range, automotive qualification needs, and packaging constraints.

Frequently Asked Questions (FAQ)

Q: Can B82498F3681J000 be used as a direct replacement for AISC-0805-R68J-T?

A: B82498F3681J000 meets the electrical specifications for inductance, current rating, and Q factor. The DC resistance of 1.7Ohm is lower than the 2.05Ohm maximum, which is acceptable. However, the package is listed as nonstandard while the main part specifies 0805 (2012 Metric). Physical dimensions should be verified for PCB layout compatibility before substitution.

Q: What is the difference between the core materials in these inductors?

A: AISC-0805-R68J-T and B82498F3681J000 use ceramic drum cores, while LQW2BASR68J00L uses an air core. All three achieve the specified 680 nH inductance and 23 Q factor at 50MHz within the ±5% tolerance band.

Q: Are there temperature range differences that affect substitution?

A: AISC-0805-R68J-T operates from -40°C to 125°C. Both substitute parts extend the minimum temperature to -55°C, providing broader low-temperature capability. The upper temperature limit of 125°C is consistent across all three parts.

Q: How do DC resistance differences impact circuit performance?

A: DC resistance values are 2.05Ohm (main part), 1.7Ohm (B82498F3681J000), and 2.2Ohm (LQW2BASR68J00L). All values remain within acceptable ranges for 190 mA applications. Lower resistance reduces I²R losses; higher resistance increases them proportionally. Circuit design should account for these variations in power dissipation calculations.

Q: What packaging considerations apply to these substitutes?

A: AISC-0805-R68J-T uses standard 0805 (2012 Metric) packaging. LQW2BASR68J00L uses 0805 (2015 Metric) with slightly different physical dimensions. B82498F3681J000 is listed as nonstandard packaging. PCB footprint compatibility must be confirmed before substitution, particularly for B82498F3681J000.

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