Bourns 5520 100µH 10A Wirewound Inductor - Equivalent & Substitute Parts

Part Overview

The Bourns 5520 is a 100µH unshielded drum core wirewound inductor rated for 10A continuous current with a maximum DC resistance of 27mOhm. This through-hole radial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring stable inductance at 1kHz test frequency.

The Bourns 5520 has reached obsolete product status. Identifying qualified substitute components ensures design continuity and maintains supply chain reliability for existing applications and new production runs.

Substiute Parts

5520

Bourns Inc.In Stock: 98185520 Datasheet

Current PartRFQ

IH10BQ101K

Vishay DaleIn Stock: 1282IH10BQ101K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the Bourns 5520 must satisfy the following electrical and mechanical criteria:

• Inductance value of 100µH
• Current rating of 10A or greater
• DC resistance not exceeding 30mOhm (allowing for minor tolerance variation from the original 27mOhm specification)
• Ferrite drum core construction, unshielded
• Through-hole radial mounting configuration
• Physical dimensions compatible with 0.940" diameter and 1.620" length envelope
• Operating temperature range supporting -55°C minimum and 105°C maximum

The Vishay Dale IH10BQ101K meets these substitution criteria with equivalent electrical performance and compatible mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

The Vishay Dale IH10BQ101K serves as a direct functional equivalent to the obsolete Bourns 5520. Both components share identical inductance and current ratings with compatible physical dimensions and thermal operating ranges.

The IH10BQ101K offers improved inductance tolerance (±10% versus ±20%), a wider maximum operating temperature (125°C versus 105°C), and slightly lower saturation current specification (7A). The DC resistance specification of 30mOhm remains within acceptable limits for applications designed around the original 27mOhm maximum.

Both components carry equivalent regulatory compliance: RoHS non-compliant status, REACH unaffected classification, and EAR99 ECCN designation. The IH10BQ101K maintains active product status, ensuring continued availability and supply chain support.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale IH10BQ101K directly replace the Bourns 5520 in existing designs?

A: Yes. Both inductors share the same 100µH inductance value, 10A current rating, ferrite drum core construction, and through-hole radial mounting. Physical dimensions are equivalent within manufacturing tolerances. The IH10BQ101K's improved inductance tolerance and extended temperature range provide equal or superior performance.

Q: What is the significance of the 3mOhm difference in DC resistance (27mOhm versus 30mOhm)?

A: The DC resistance difference represents approximately 11% variation. For applications where power dissipation is critical, verify that the substitute component's resistance remains acceptable within your thermal budget. Both values fall within standard wirewound inductor specifications for this current class.

Q: Are there any compliance or regulatory differences between these components?

A: Both components share identical RoHS non-compliant status, REACH unaffected classification, and EAR99 ECCN designation. No regulatory barriers exist to substitution.

Q: How do the inductance tolerances affect circuit performance?

A: The Bourns 5520 specifies ±20% tolerance, while the Vishay Dale IH10BQ101K specifies ±10% tolerance. The substitute provides tighter inductance control. If your circuit design requires the wider tolerance band of the original component, the substitute remains compatible. If your design requires tighter tolerance, the substitute offers improved performance.

Q: What is the practical difference in operating temperature range?

A: The Bourns 5520 operates to 105°C maximum; the IH10BQ101K operates to 125°C maximum. Both support the -55°C minimum. The substitute provides additional thermal margin for high-temperature applications. Standard applications experience no functional difference.

Q: Are the physical dimensions identical?

A: Dimensions are equivalent within manufacturing tolerances. Bourns 5520: 0.940" Dia × 1.620" L (23.88mm × 41.15mm). Vishay Dale IH10BQ101K: 0.935" Dia × 1.625" L (23.75mm × 41.28mm). Variation is less than 1% in both axes and does not affect PCB layout or mechanical fit.