78F560J Equivalent & Substitute Parts

Part Overview

The Bourns 78F560J is a 56 µH unshielded drum core wirewound inductor rated for 150 mA with a maximum DC resistance of 2.6Ω. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors. The 78F560J is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production support and design continuity.

Substiute Parts

78F560J

Bourns Inc.In Stock: 103278F560J Datasheet

Current PartRFQ

8230-62-RC

Bourns Inc.In Stock: 16908230-62-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 78F560J is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 56 µH (exact match required)
• Core material and type: Ferrite drum core, unshielded
• Mounting configuration: Through-hole axial
• Operating temperature range: -55°C to 105°C minimum

Secondary Compatibility Factors:

• Current rating must meet or exceed 150 mA
• DC resistance and Q factor influence circuit performance but allow for minor variation within acceptable operating margins
• Inductance tolerance and frequency characteristics must support the intended application frequency range

The 8230-62-RC qualifies as a substitute based on matching inductance, core type, mounting style, and temperature range. Variations in current rating, DC resistance, and Q factor reflect different design generations within the same product category.

Parameter Comparison

Engineering Selection Recommendations

78F560J (Obsolete): This part is no longer in active production. Continued use is limited to existing inventory or legacy system maintenance. The non-compliant RoHS status restricts application in new designs subject to environmental regulations.

8230-62-RC (Active Substitute): This part is actively manufactured and meets ROHS3 compliance requirements, making it suitable for new designs and ongoing production. The 8230-62-RC maintains the same inductance value and core configuration as the 78F560J. The slightly lower current rating (145 mA vs. 150 mA) and higher DC resistance (5.7Ω vs. 2.6Ω) represent design trade-offs in the newer series. Selection should account for circuit current requirements and acceptable power dissipation margins. The higher self-resonant frequency (18 MHz vs. 7.5 MHz) extends high-frequency performance capability.

Frequently Asked Questions (FAQ)

Q: Can the 8230-62-RC directly replace the 78F560J in existing designs?

A: The 8230-62-RC matches the 78F560J in inductance value, core type, and mounting configuration. However, the 5 mA lower current rating and 3.1Ω higher DC resistance must be evaluated against circuit specifications. If the application operates at or near 150 mA, the reduced margin may require circuit analysis. Power dissipation increases proportionally with the higher DC resistance.

Q: What is the impact of the ±10% tolerance on the 8230-62-RC versus the ±5% tolerance on the 78F560J?

A: The wider tolerance on the 8230-62-RC introduces greater inductance variation across the manufacturing range. Applications with tight inductance requirements should account for this broader tolerance band during circuit design and testing.

Q: Are there packaging differences between these parts?

A: Both parts use through-hole axial packaging. The 78F560J measures 0.110" diameter × 0.280" length, while the 8230-62-RC measures 0.120" diameter × 0.300" length. These dimensional differences are minor and typically accommodate standard PCB through-hole spacing.

Q: Does the higher self-resonant frequency of the 8230-62-RC affect circuit performance?

A: The 8230-62-RC exhibits a self-resonant frequency of 18 MHz compared to 7.5 MHz for the 78F560J. This higher frequency extends the usable frequency range before resonance effects become significant, potentially improving performance in higher-frequency applications.

Q: What compliance considerations apply to part selection?

A: The 78F560J is RoHS non-compliant, restricting use in new designs subject to environmental regulations. The 8230-62-RC is ROHS3 compliant and suitable for regulated applications. Both parts are REACH unaffected and classified as EAR99 for export purposes.