B82141B1223K9 Equivalent & Substitute Parts

Part Overview

The B82141B1223K9 is a 22 µH unshielded drum core wirewound inductor manufactured by EPCOS - TDK Electronics, rated for 335 mA maximum current with 900mOhm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, core type, and mounting configuration while meeting or exceeding the electrical performance specifications.

Substiute Parts

B82141B1223K9

EPCOS - TDK ElectronicsIn Stock: 803B82141B1223K9 Datasheet

Current PartRFQ

RLB0608-220KL

Bourns Inc.In Stock: 2533RLB0608-220KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B82141B1223K9 is determined by the following critical parameters:

• Inductance value must be 22 µH with ±10% tolerance
• Core material must be ferrite with unshielded drum core construction
• Mounting configuration must be through hole, radial vertical cylinder
• Current rating must meet or exceed 335 mA
• DC resistance should not significantly exceed 900mOhm to maintain thermal performance
• Operating temperature range should support the application requirements
• RoHS3 compliance required for regulatory alignment

The RLB0608-220KL from Bourns Inc. satisfies these substitution criteria with improved electrical characteristics in key areas.

Parameter Comparison

Engineering Selection Recommendations

The RLB0608-220KL is a direct functional substitute for the obsolete B82141B1223K9. Both components are ROHS3 compliant and maintain identical inductance, tolerance, core construction, and mounting configuration. The Bourns part provides superior electrical performance with 460 mA current rating versus 335 mA, and reduced DC resistance of 650mOhm compared to 900mOhm maximum, resulting in lower power dissipation and improved thermal characteristics.

The operating temperature range of the substitute (-40°C ~ 105°C) is narrower than the original part (-55°C ~ 125°C). Applications requiring operation below -40°C or above 105°C must evaluate this limitation against specific design requirements. The self-resonant frequency of the substitute is 10MHz versus 12MHz for the original, which may impact high-frequency circuit behavior in sensitive applications.

The RLB0608-220KL is currently in active production status with substantial inventory availability, ensuring long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the RLB0608-220KL replace the B82141B1223K9 in all applications?

A: The RLB0608-220KL is functionally equivalent for applications operating within -40°C to 105°C. Applications requiring the full -55°C to 125°C temperature range of the original part must verify that the narrower operating window is acceptable for the specific design.

Q: What are the physical dimension differences between these parts?

A: The B82141B1223K9 has a diameter of 0.118" (3.00mm) and height of 0.512" (13.00mm). The RLB0608-220KL has a diameter of 0.197" (5.00mm) and height of 0.295" (7.50mm). PCB layout and mechanical clearance must be verified before substitution.

Q: Why does the substitute have lower DC resistance?

A: The RLB0608-220KL exhibits 650mOhm maximum DC resistance compared to 900mOhm for the original part. This lower resistance reduces power dissipation and heat generation, providing improved thermal performance in the same current-carrying application.

Q: Are both parts RoHS compliant?

A: Yes, both the B82141B1223K9 and RLB0608-220KL are ROHS3 compliant, meeting current environmental and regulatory requirements.

Q: What is the significance of the Q factor difference?

A: The RLB0608-220KL provides a Q factor of 60 at 2.52MHz compared to 55 for the original part. Higher Q indicates lower losses and better efficiency at the test frequency, though this difference is modest and application-dependent.

Q: How does the self-resonant frequency difference affect circuit design?

A: The original part has a self-resonant frequency of 12MHz while the substitute is 10MHz. In circuits operating near or above these frequencies, the substitute may exhibit different impedance characteristics. Applications with frequency-sensitive requirements should evaluate this parameter against specific circuit behavior.