API Delevan 1008-681K Fixed Inductor Equivalent & Substitute Parts

Part Overview

The API Delevan 1008-681K is a fixed unshielded surface mount inductor with 680 nH inductance, rated for 760 mA continuous current, and maximum DC resistance of 260 mOhm. This component is designed for high-frequency applications requiring compact form factors and low parasitic resistance. The part is currently in active production status with 722 pieces available in original inventory.

Equivalent and substitute parts are identified when design requirements permit component interchange without compromising electrical performance or mechanical fit within the target application. Substitution becomes necessary when primary part availability is limited, supply chain constraints occur, or when improved compliance certifications are required for specific manufacturing standards.

Substiute Parts

1008-681K

API Delevan Inc.In Stock: 7881008-681K Datasheet

Current PartRFQ

1008R-681K

API Delevan Inc.In Stock: 29631008R-681K Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the API Delevan 1008-681K is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Inductance value: 680 nH ±10%
• Current rating: minimum 760 mA
• DC resistance: maximum 260 mOhm
• Q factor @ 25 MHz: 40 or higher
• Self resonant frequency: 175 MHz or higher
• Operating temperature range: -55°C to 125°C minimum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Equivalence Criteria:

• Mounting type: Surface Mount
• Physical dimensions: 0.105" L × 0.095" W (2.66mm × 2.41mm)
• Height seated maximum: 0.095" (2.41mm)
• Packaging format: Tape & Reel

The substitute part 1008R-681K from API Delevan meets all electrical and mechanical equivalence criteria and is therefore classified as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (1008-681K): The 1008-681K remains suitable for applications where RoHS non-compliance is acceptable or where existing design validation has been completed against this specific part number. Current inventory of 722 pieces supports near-term production requirements.

Substitute Part Selection (1008R-681K): The 1008R-681K is the direct electrical and mechanical equivalent with identical performance specifications. This substitute offers two distinct advantages:

1. Compliance Enhancement: ROHS3 compliance certification provides compatibility with manufacturing environments and customer requirements that mandate RoHS adherence. The main part carries RoHS non-compliant status.

2. Supply Availability: Inventory of 2922 pieces provides significantly greater supply security compared to the main part's 722-piece inventory, reducing procurement risk for high-volume production.

Both parts share identical electrical characteristics, mechanical dimensions, and thermal operating ranges. Selection between these parts should be based on compliance requirements and supply chain considerations rather than technical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can the 1008R-681K be used as a direct replacement for the 1008-681K in existing designs?

A: Yes. The 1008R-681K is electrically and mechanically identical to the 1008-681K. All electrical parameters including inductance, current rating, DC resistance, Q factor, and self-resonant frequency are identical. Physical dimensions and mounting characteristics are identical. No circuit redesign or PCB layout modification is required.

Q: What is the difference between the 1008-681K and 1008R-681K part numbers?

A: The primary difference is RoHS compliance status. The 1008R-681K carries ROHS3 compliance certification, while the 1008-681K is RoHS non-compliant. All other electrical and mechanical specifications are identical. The "R" designation in the 1008R series indicates RoHS3 compliance.

Q: Are there any performance differences between these two inductors?

A: No. Both parts deliver identical electrical performance. Inductance value, tolerance, current rating, DC resistance, Q factor, self-resonant frequency, and operating temperature range are identical. Core material, shielding configuration, and frequency response characteristics are identical.

Q: Which part should be selected for new designs?

A: For new designs, the 1008R-681K is recommended due to ROHS3 compliance certification and higher inventory availability. This part meets current manufacturing standards and provides greater supply security. If RoHS compliance is not a design requirement, either part is technically suitable.

Q: Can these parts be mixed in the same production batch?

A: Yes. Both parts are electrically and mechanically identical and can be used interchangeably within the same circuit and PCB layout. However, compliance documentation should reflect the actual part numbers used in final assemblies.

Q: What is the Moisture Sensitivity Level (MSL) for these inductors?

A: Both the 1008-681K and 1008R-681K carry MSL 1 (Unlimited) rating. This indicates unlimited shelf life without moisture bake-out requirements prior to soldering, providing maximum handling flexibility.

Q: Are these parts suitable for high-frequency applications?

A: Yes. Both inductors are designed for high-frequency operation with a self-resonant frequency of 175 MHz and Q factor of 40 at 25 MHz. These characteristics support RF and microwave circuit applications within the specified frequency range.

Q: What is the maximum operating temperature for these inductors?

A: Both parts operate across the temperature range of -55°C to 125°C. This range supports industrial and commercial applications with extended thermal operating windows.

Q: How should these surface mount inductors be handled during assembly?

A: Both parts carry MSL 1 rating, eliminating moisture sensitivity concerns. Standard surface mount assembly processes apply. Physical dimensions of 0.105" L × 0.095" W (2.66mm × 2.41mm) with 0.095" (2.41mm) seated height are compatible with standard pick-and-place equipment and reflow soldering processes.