LAL04KB820K Equivalent & Substitute Parts

Part Overview

The LAL04KB820K is a 82 µH unshielded axial inductor manufactured by Taiyo Yuden, rated for 290 mA maximum current with a DC resistance of 1.62Ohm. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The part operates across a temperature range of -25°C to 105°C and is suitable for through-hole mounting applications.

Substiute Parts

LAL04KB820K

Taiyo YudenIn Stock: 1145LAL04KB820K Datasheet

Current PartRFQ

8230-66-RC

Bourns Inc.In Stock: 8368230-66-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LAL04KB820K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 82 µH with ±10% tolerance
• Mounting type: Through hole axial configuration
• Package classification: Axial form factor
• Shielding type: Unshielded construction

Secondary Compatibility Factors:

• Current rating capability
• DC resistance characteristics
• Operating temperature range
• Frequency response characteristics

The substitute part 8230-66-RC from Bourns Inc. matches the primary inductance specification and axial through-hole mounting requirements. However, differences exist in current rating, DC resistance, and operating temperature range that must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 8230-66-RC from Bourns Inc. serves as an active substitute for the obsolete LAL04KB820K. The substitute maintains identical inductance specification and tolerance, with both components featuring unshielded axial through-hole construction.

Compliance Status: The 8230-66-RC is RoHS3 compliant and carries active product status, ensuring continued availability and manufacturing support. Both parts are REACH unaffected and classified under ECCN EAR99.

Application Suitability: Selection between these parts depends on circuit current requirements. The LAL04KB820K supports 290 mA operation, while the 8230-66-RC is rated for 130 mA maximum current. Applications requiring current levels exceeding 130 mA cannot use the Bourns substitute without circuit redesign.

The DC resistance differential (1.62Ohm versus 7.3Ohm) represents a significant parameter variance. Circuits sensitive to inductor losses or thermal dissipation must account for this 4.5x increase in resistance when substituting the Bourns component.

The extended operating temperature range of the 8230-66-RC (-55°C to 105°C versus -25°C to 105°C) provides additional thermal margin for low-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can the 8230-66-RC directly replace the LAL04KB820K in all applications?

A: Direct substitution is limited by current rating and DC resistance differences. The 8230-66-RC maximum current rating of 130 mA is insufficient for circuits requiring the full 290 mA capability of the original part. Additionally, the higher DC resistance will increase power dissipation in the inductor.

Q: What is the impact of the DC resistance difference on circuit performance?

A: The 8230-66-RC exhibits 7.3Ohm maximum DC resistance compared to 1.62Ohm for the LAL04KB820K. This 4.5x increase results in higher resistive losses, increased heat generation, and potential voltage drop across the inductor during operation. Circuit analysis is required to determine acceptability for specific applications.

Q: Are both parts suitable for the same frequency range?

A: Both inductors operate effectively at similar test frequencies (2.52MHz and 2.5MHz respectively). However, the 8230-66-RC exhibits a higher self-resonant frequency of 14MHz compared to 5.3MHz for the LAL04KB820K, indicating different high-frequency characteristics.

Q: What are the physical dimension differences?

A: The LAL04KB820K measures 0.157" diameter by 0.386" length (4.00mm x 9.80mm), while the 8230-66-RC measures 0.120" diameter by 0.300" length (3.05mm x 7.62mm). The substitute is physically smaller, which may affect board layout and mechanical clearance considerations.

Q: Is the extended temperature range of the 8230-66-RC beneficial?

A: The 8230-66-RC operating range of -55°C to 105°C extends the lower temperature limit by 30°C compared to the LAL04KB820K range of -25°C to 105°C. This provides additional thermal margin for applications operating in cold environments.

Q: What packaging differences exist between these parts?

A: Both components are supplied in axial through-hole packages suitable for PCB insertion. The LAL04KB820K is listed as obsolete with 1116 pieces in stock, while the 8230-66-RC is active with 824 pieces available in bulk packaging.