LHL13NB681KB Equivalent & Substitute Parts

Part Overview

The LHL13NB681KB is a 680 µH unshielded through-hole inductor manufactured by Taiyo Yuden, rated for 800 mA continuous current with a maximum DC resistance of 610 mOhm. This component features a ferrite core in a radial, vertical cylinder package measuring 14.00 mm diameter by 17.00 mm height. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

LHL13NB681KB

Taiyo YudenIn Stock: 864LHL13NB681KB Datasheet

Current PartRFQ

DC630R-684K

API Delevan Inc.In Stock: 899DC630R-684K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHL13NB681KB is determined by strict equivalence across the following critical parameters:

Mandatory Matching Criteria:

• Inductance value: 680 µH with ±10% tolerance
• Package type: Radial, vertical cylinder through-hole configuration
• Core material: Ferrite
• Shielding classification: Unshielded
• RoHS compliance: ROHS3 Compliant

Allowable Variation Criteria:

• Current rating: Substitute must equal or exceed 800 mA
• DC resistance: Substitute must not exceed 610 mOhm maximum
• Operating temperature range: Substitute must support the required application temperature window
• Physical dimensions: Substitute must fit within or match the radial, vertical cylinder envelope

The DC630R-684K from API Delevan Inc. satisfies all mandatory matching criteria and provides superior performance in current rating (1.42 A versus 800 mA) and lower DC resistance (468 mOhm versus 610 mOhm maximum), making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The DC630R-684K is a direct functional equivalent to the obsolete LHL13NB681KB. Both components are ROHS3 compliant and feature identical inductance values with matching tolerance specifications. The substitute part offers enhanced performance characteristics: current rating of 1.42 A exceeds the original 800 mA specification, and DC resistance of 468 mOhm is lower than the 610 mOhm maximum of the original part. The DC630R-684K maintains active product status, ensuring long-term availability and supply chain continuity. The extended operating temperature range of -55°C to 125°C provides broader environmental compatibility compared to the original -25°C to 105°C range. Both components utilize ferrite core construction in unshielded, radial vertical cylinder packages suitable for through-hole mounting. Physical dimensions differ slightly (16.00 mm diameter and 21.08 mm height for the substitute versus 14.00 mm diameter and 17.00 mm height for the original), requiring verification of PCB layout clearance during implementation.

Frequently Asked Questions (FAQ)

Q: Can the DC630R-684K be used as a direct replacement for the LHL13NB681KB?

A: Yes. Both components share identical inductance values (680 µH), tolerance specifications (±10%), core material (ferrite), shielding classification (unshielded), and mounting type (through-hole radial vertical cylinder). The substitute meets or exceeds all electrical performance requirements of the original part.

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

A: The DC630R-684K provides superior electrical performance with 1.42 A current rating versus 800 mA, and lower DC resistance of 468 mOhm compared to 610 mOhm maximum. The substitute features an extended operating temperature range (-55°C to 125°C versus -25°C to 105°C) and maintains active product status. Physical dimensions are slightly larger: 16.00 mm diameter and 21.08 mm height versus 14.00 mm diameter and 17.00 mm height.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both the LHL13NB681KB and DC630R-684K are ROHS3 compliant. The DC630R-684K additionally carries REACH Unaffected status. Both components are classified under ECCN EAR99 for export control purposes.

Q: Will the physical size difference affect PCB integration?

A: The DC630R-684K is larger in both diameter (16.00 mm versus 14.00 mm) and height (21.08 mm versus 17.00 mm). PCB layout must accommodate these increased dimensions. Verify clearance around the component footprint and adjacent circuitry before implementation.

Q: What is the inductance test frequency for each part?

A: The LHL13NB681KB is tested at 796 kHz with a self-resonant frequency of 1.2 MHz. The DC630R-684K is tested at 10 kHz. Both components maintain the specified 680 µH inductance value within their respective test conditions.

Q: Is the DC630R-684K available in the same packaging format?

A: Yes. Both components use radial, vertical cylinder through-hole packages. The DC630R-684K is supplied in bulk packaging, whereas the original part packaging format is not specified in available documentation.