N08DPB561K Equivalent & Substitute Parts

Part Overview

The N08DPB561K is a 560 µH unshielded surface mount inductor manufactured by Taiyo Yuden, rated for 380 mA continuous current with a maximum DC resistance of 2.4Ohm. This component is classified as obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

N08DPB561K

Taiyo YudenIn Stock: 853N08DPB561K Datasheet

Current PartRFQ

SRR1205-561KL

Bourns Inc.In Stock: 843SRR1205-561KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the N08DPB561K with the SRR1205-561KL is based on the following critical parameters that must align for functional equivalence:

Primary Matching Parameters:

• Inductance value: 560 µH (both parts)
• Inductance tolerance: ±10% (both parts)
• Mounting type: Surface Mount (both parts)
• Inductance frequency test: 1 kHz (both parts)
• Moisture Sensitivity Level: 1 (Unlimited) (both parts)

Secondary Compatibility Parameters:

• Current rating: N08DPB561K rated 380 mA; SRR1205-561KL rated 400 mA (substitute exceeds requirement)
• DC resistance: N08DPB561K 2.4Ohm Max; SRR1205-561KL 2.2Ohm Max (substitute is lower)
• Operating temperature: N08DPB561K -25°C ~ 85°C; SRR1205-561KL -40°C ~ 125°C (substitute provides extended range)

Dimensional Considerations: The SRR1205-561KL has a larger footprint (0.500" L x 0.500" W vs. 0.417" L x 0.354" W) and greater height (0.217" vs. 0.197"), requiring PCB layout verification.

Parameter Comparison

Engineering Selection Recommendations

The SRR1205-561KL from Bourns Inc. serves as a functional substitute for the obsolete N08DPB561K. The substitute part maintains the critical inductance specification of 560 µH at ±10% tolerance and supports the required current rating with a 20 mA margin (400 mA vs. 380 mA requirement).

The SRR1205-561KL carries active product status, ensuring ongoing availability and supply chain continuity. The part is ROHS3 compliant, meeting current regulatory requirements. Both components share identical moisture sensitivity classification (MSL 1) and inductance test frequency (1 kHz).

Physical dimensions differ between the two parts. The substitute requires additional PCB space (0.500" x 0.500" vs. 0.417" x 0.354") and has marginally greater height (0.217" vs. 0.197"). Circuit designers must verify that available board space accommodates the larger footprint.

The SRR1205-561KL incorporates shielding and ferrite drum core construction, contrasting with the unshielded design of the N08DPB561K. This structural difference results in lower self-resonant frequency (1.5MHz vs. 2.7MHz) and reduced DC resistance (2.2Ohm vs. 2.4Ohm). Applications sensitive to high-frequency performance or EMI characteristics require circuit-level evaluation.

Frequently Asked Questions (FAQ)

Q: Can the SRR1205-561KL directly replace the N08DPB561K without circuit modification?

A: The SRR1205-561KL maintains the same inductance value and tolerance, supporting the specified current rating. However, PCB layout changes are necessary due to larger footprint dimensions. The shielded construction and lower self-resonant frequency may affect circuit performance in high-frequency applications.

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

A: Both inductors provide 560 µH inductance at ±10% tolerance. The SRR1205-561KL offers 20 mA additional current capacity (400 mA vs. 380 mA) and lower DC resistance (2.2Ohm vs. 2.4Ohm). The substitute exhibits lower self-resonant frequency (1.5MHz vs. 2.7MHz) due to shielded drum core design.

Q: Are there packaging or supply chain advantages to using the SRR1205-561KL?

A: The SRR1205-561KL carries active product status with confirmed inventory availability. The N08DPB561K is classified as obsolete, presenting long-term supply risk. The substitute is supplied in standard Tape & Reel packaging and maintains ROHS3 compliance.

Q: How do the physical dimensions affect PCB design?

A: The SRR1205-561KL requires a larger footprint (0.500" x 0.500" vs. 0.417" x 0.354") and slightly greater height (0.217" vs. 0.197"). PCB layout must accommodate these dimensional increases. Clearance verification is necessary for applications with space constraints or multi-layer board configurations.

Q: What is the significance of shielding in the substitute part?

A: The SRR1205-561KL incorporates shielding, reducing electromagnetic interference emission compared to the unshielded N08DPB561K. This design feature benefits noise-sensitive circuits but may alter impedance characteristics in specific frequency ranges.

Q: Are both parts suitable for the same operating temperature range?

A: The N08DPB561K operates from -25°C to 85°C. The SRR1205-561KL extends this range to -40°C to 125°C, providing broader environmental capability. Applications requiring extended temperature operation benefit from the substitute's enhanced thermal specification.