LAL04NA331K Equivalent & Substitute Parts

Part Overview

The LAL04NA331K is a 330 µH unshielded axial inductor manufactured by Taiyo Yuden, rated for 137 mA maximum current with a DC resistance of 6.4 Ohm maximum. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Equivalent parts must maintain identical electrical performance characteristics and physical compatibility within the specified application constraints.

Substiute Parts

LAL04NA331K

Taiyo YudenIn Stock: 2727LAL04NA331K Datasheet

Current PartRFQ

IRF36ER331K

Vishay DaleIn Stock: 1190IRF36ER331K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LAL04NA331K is based on strict electrical and mechanical parameter matching. The following criteria determine valid equivalency:

Primary Substitution Criteria:

• Inductance value: 330 µH with ±10% tolerance
• Current rating: minimum 137 mA
• DC resistance: maximum 6.4 Ohm
• Q factor: 65 @ 796 kHz
• Self resonant frequency: 2.6 MHz
• Shielding configuration: Unshielded
• Mounting type: Through Hole
• Package type: Axial
• Operating temperature range: compatible with -25°C to 105°C minimum

The IRF36ER331K from Vishay Dale meets all specified electrical parameters and maintains physical compatibility through identical axial through-hole mounting and equivalent dimensional specifications.

Parameter Comparison

Engineering Selection Recommendations

The IRF36ER331K is a direct electrical equivalent to the obsolete LAL04NA331K. Both components share identical inductance, current rating, DC resistance, and frequency characteristics. The IRF36ER331K maintains active product status with Vishay Dale, ensuring ongoing availability and supply chain continuity.

Physical dimensions are compatible within standard through-hole PCB assembly tolerances. The axial package configuration and lead spacing are equivalent between both parts. The IRF36ER331K operates across a temperature range of -20°C to 105°C, which encompasses the primary operating window of the original LAL04NA331K specification.

Both components carry identical REACH and ECCN classifications, confirming regulatory compliance equivalency. The IRF36ER331K is RoHS3 compliant, meeting current environmental standards for electronic component manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the IRF36ER331K be used as a direct replacement for the LAL04NA331K?

A: Yes. The IRF36ER331K meets all specified electrical parameters including inductance value, current rating, DC resistance, and frequency characteristics. Physical dimensions are compatible with standard through-hole PCB layouts.

Q: Are there dimensional differences between these parts?

A: The IRF36ER331K has a maximum length of 0.394" (10.00mm) compared to the LAL04NA331K at 0.386" (9.80mm). Both maintain identical 0.157" (4.00mm) diameter specifications. This 0.008" (0.20mm) length difference is within standard PCB assembly tolerances for axial through-hole components.

Q: What is the operating temperature difference between these parts?

A: The LAL04NA331K operates from -25°C to 105°C, while the IRF36ER331K operates from -20°C to 105°C. The IRF36ER331K covers the primary operating range and is suitable for applications not requiring operation below -20°C.

Q: Are regulatory certifications equivalent?

A: Yes. Both components carry identical REACH Unaffected status and EAR99 ECCN classification. The IRF36ER331K additionally carries RoHS3 compliance certification.

Q: What is the core material difference?

A: The LAL04NA331K core material is not specified in available documentation. The IRF36ER331K uses a ferrite core. Both components deliver identical electrical performance at the specified test frequency of 796 kHz.

Q: Is the Q factor identical between these parts?

A: Yes. Both components deliver a Q factor of 65 at 796 kHz, confirming equivalent frequency response characteristics.

Q: What inventory status should be considered for procurement?

A: The LAL04NA331K is classified as obsolete with 2700 pieces in stock. The IRF36ER331K is active with 1144 pieces in stock, providing ongoing supply availability through Vishay Dale.