LHL08NB472JS Equivalent & Substitute Parts

Part Overview

The LHL08NB472JS is a 4.7 mH unshielded ferrite core inductor manufactured by Taiyo Yuden, rated for 100 mA maximum current with 14 Ohm DC resistance. This component is designed for through-hole mounting in radial, vertical cylinder configuration. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

LHL08NB472JS

Taiyo YudenIn Stock: 720LHL08NB472JS Datasheet

Current PartRFQ

3443R-88K

API Delevan Inc.In Stock: 9533443R-88K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LHL08NB472JS is based on the following critical parameters:

Primary Matching Criteria:

• Inductance value: 4.7 mH (exact match required)
• Core material: Ferrite (unshielded)
• Mounting type: Through hole radial configuration
• Regulatory compliance: ROHS3 compliance

Secondary Compatibility Factors:

• Current rating must equal or exceed the application requirement
• DC resistance must be acceptable for the circuit design
• Operating temperature range must encompass application conditions
• Package dimensions must fit the PCB layout constraints

The substitute part 3443R-88K matches the primary criteria of inductance value, core material, and mounting type. However, the substitute exhibits different electrical characteristics in current rating, DC resistance, and operating temperature range, which must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 3443R-88K from API Delevan Inc. is an active product with ROHS3 compliance, making it suitable for applications requiring long-term component availability and regulatory adherence. The substitute part provides superior electrical performance characteristics compared to the obsolete LHL08NB472JS:

• Current rating of 450 mA exceeds the original 100 mA specification, providing design margin for current-limited applications
• DC resistance of 7.7 Ohm is lower than the original 14 Ohm, resulting in reduced power dissipation
• Operating temperature range of -55°C ~ 125°C extends beyond the original -25°C ~ 105°C specification
• Inductance tolerance of ±10% is wider than the original ±5%, requiring circuit tolerance analysis

Physical package dimensions differ between the two parts. The LHL08NB472JS measures 0.354" diameter with 0.374" seated height, while the 3443R-88K measures 0.872" length by 0.516" width with 0.600" seated height. PCB layout compatibility must be verified before implementation.

Frequently Asked Questions (FAQ)

Q: Can the 3443R-88K directly replace the LHL08NB472JS in all applications?

A: The 3443R-88K matches the core inductance value and ferrite core material of the LHL08NB472JS. However, physical package dimensions differ significantly. PCB layout compatibility must be confirmed. Additionally, the wider inductance tolerance (±10% versus ±5%) may affect circuit performance in tolerance-sensitive applications.

Q: What are the key electrical differences between these parts?

A: The 3443R-88K provides lower DC resistance (7.7 Ohm versus 14 Ohm) and higher current rating (450 mA versus 100 mA). These characteristics result in reduced power dissipation and improved current handling capability. The substitute part operates across a wider temperature range (-55°C ~ 125°C versus -25°C ~ 105°C).

Q: Are both parts RoHS compliant?

A: Yes, both the LHL08NB472JS and 3443R-88K are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

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

A: The LHL08NB472JS specifies ±5% inductance tolerance, while the 3443R-88K specifies ±10%. In circuits where inductance value precision is critical for frequency response or impedance matching, the wider tolerance of the substitute part may introduce measurable variations in circuit behavior.

Q: How do the physical dimensions affect substitution?

A: The LHL08NB472JS is a vertical cylinder with 0.354" diameter and 0.374" height. The 3443R-88K is a radial component measuring 0.872" by 0.516" with 0.600" height. These dimensional differences require verification of PCB footprint compatibility and available board space before component substitution.

Q: What is the saturation current specification for the 3443R-88K?

A: The 3443R-88K has a saturation current (Isat) of 340 mA, indicating the current level at which the inductor begins to exhibit nonlinear behavior due to core saturation.